Abstract
Chromium (Cr) is a common environmental contaminant due to industrial processes and anthropogenic activities such as mining of chrome ore, electroplating, timber treatment, leather tanning, fertilizer and pesticide, etc. Cr exists mainly in both hexavalent [Cr(VI)] and trivalent [Cr(III)] form, being Cr(VI) with non-degradability and potential to be hidden, thereby affecting surrounding environment and being toxic to human health. Therefore, researches on remediation of Cr pollution in the environment have received much attention. Biochar is a low-cost adsorbent, which has been identified as a suitable material for Cr(VI) immobilization and removal from soil and wastewater. This review incorporates existing literature to provide a detailed examination into the (1) Cr chemistry, the source and current status of Cr pollution, and Cr toxicity and health; (2) feedstock and characterization of biochar; (3) processes and mechanisms of immobilization and removal of Cr by biochar, including oxidation–reduction, electrostatic interactions, complexation, ion exchange, and precipitation; (4) applications of biochar for Cr(VI) remediation and the modification of biochar to improve its performance; (5) factors affecting removal efficiency of Cr(VI) with respect to its physico-chemical conditions, including pH, temperature, initial concentration, reaction time, biochar characteristics, and coexisting contaminants. Finally, we identify current issues, challenges, and put forward recommendations as well as proposed directions for future research. This review provides a thorough understanding of using biochar as an emerging biomaterial adsorbent in Cr(VI)-contaminated soils and wastewater.
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(Modified from Xia et al. 2019)
(Data from Cao and Jin 2015) and the published articles regarding “Hexavalent chromium” (Data from Google Scholar)
(Modified from Li et al. 2017)
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References
Abdel-Fattah, T. M., Mahmoud, M. E., Ahmed, S. B., Huff, M. D., Lee, J. W., & Kumar, S. (2015). Biochar from woody biomass for removing metal contaminants and carbon sequestration. Journal of Industrial and Engineering Chemistry,22, 103–109. https://doi.org/10.1016/j.jiec.2014.06.030.
Agegnehu, G., Srivastava, A. K., & Bird, M. I. (2017). The role of biochar and biochar-compost in improving soil quality and crop performance: A review. Applied Soil Ecology,119, 156–170. https://doi.org/10.1016/j.apsoil.2017.06.008.
Ahmad, M., Rajapaksha, A. U., Lim, J. E., Zhang, M., Bolan, N., Mohan, D., et al. (2014). Biochar as a sorbent for contaminant management in soil and water: A review. Chemosphere,99, 19–33. https://doi.org/10.1016/j.chemosphere.2013.10.071.
Ahmed, M. B., Zhou, J. L., Ngo, H. H., Guo, W., & Chen, M. (2016). Progress in the preparation and application of modified biochar for improved contaminant removal from water and wastewater. Bioresource Technology,214, 836–851. https://doi.org/10.1016/j.biortech.2016.05.057.
Ai, Z., Cheng, Y., Zhang, L., & Qiu, J. (2008). Efficient removal of Cr(VI) from aqueous solution with Fe@Fe2O3 core–shell nanowires. Environmental Science and Technology,42(18), 6955–6960. https://doi.org/10.1021/es800962m.
Aksu, Z., & İşoğlu, İ. A. (2005). Removal of copper (II) ions from aqueous solution by biosorption onto agricultural waste sugar beet pulp. Process Biochemistry,40(9), 3031–3044. https://doi.org/10.1016/j.procbio.2005.02.004.
Al-Wabel, M. I., Al-Omran, A., El-Naggar, A. H., Nadeem, M., & Usman, A. R. (2013). Pyrolysis temperature induced changes in characteristics and chemical composition of biochar produced from conocarpus wastes. Bioresource Technology,131, 374–379. https://doi.org/10.1016/j.biortech.2012.12.165.
Antoniadis, V., Polyzois, T., Golia, E. E., & Petropoulos, S. A. (2017). Hexavalent chromium availability and phytoremediation potential of Cichorium spinosum as affect by manure, zeolite and soil ageing. Chemosphere,171, 729–734. https://doi.org/10.1016/j.chemosphere.2016.11.146.
Antoniadis, V., Shaheen, S., Levizou, E., Shahid, M., Niazi, N. K., Vithanage, M., et al. (2019). A critical prospective analysis of the potential toxicity of trace element regulation limits in soils worldwide: Are they protective concerning health risk assessment?—A review. Environmental International. https://doi.org/10.1016/j.envint.2019.03.039.
Antoniadis, V., Zanni, A. A., Levizou, E., Shaheen, S. M., Dimirkou, A., Bolan, N., et al. (2018). Modulation of hexavalent chromium toxicity on Οriganum vulgare in an acidic soil amended with peat, lime, and zeolite. Chemosphere,195, 291–300. https://doi.org/10.1016/j.chemosphere.2017.12.069.
Arian, M. B., Ali, I., Yilmaz, E., & Soylak, M. (2018). Nanomaterial’s based chromium speciation in environmental samples: A review. TrAC Trends in Analytical Chemistry. https://doi.org/10.1016/j.trac.2018.03.014.
Ashraf, A., Bibi, I., Niazi, N. K., Ok, Y. S., Murtaza, G., Shahid, M., et al. (2017). Chromium (VI) sorption efficiency of acid-activated banana peel over organo-montmorillonite in aqueous solutions. International Journal of Phytoremediation,19(7), 605–613. https://doi.org/10.1080/15226514.2016.1256372.
Ball, J. W., & Izbicki, J. A. (2004). Occurrence of hexavalent chromium in ground water in the western Mojave Desert, California. Applied Geochemistry,19(7), 1123–1135. https://doi.org/10.1016/j.apgeochem.2004.01.011.
Ballesteros, S., Rincón, J. M., Rincón-Mora, B., & Jordán, M. M. (2017). Vitrification of urban soil contamination by hexavalent chromium. Journal of Geochemical Exploration,174, 132–139. https://doi.org/10.1016/j.gexplo.2016.07.011.
Banks, M. K., Schwab, A. P., & Henderson, C. (2006). Leaching and reduction of chromium in soil as affected by soil organic content and plants. Chemosphere,62(2), 255–264. https://doi.org/10.1016/j.chemosphere.2005.05.020.
Barakat, M. A. (2011). New trends in removing heavy metals from industrial wastewater. Arabian Journal of Chemistry,4(4), 361–377. https://doi.org/10.1016/j.arabjc.2010.07.019.
Beaumont, J. J., Sedman, R. M., Reynolds, S. D., Sherman, C. D., Li, L. H., Howd, R. A., et al. (2008). Cancer mortality in a Chinese population exposed to hexavalent chromium in drinking water. Epidemiology. https://doi.org/10.1097/EDE.0b013e31815cea4c.
Bello, O. S., & Ahmad, M. A. (2011). Response surface modeling and optimization of remazol brilliant blue reactive dye removal using periwinkle shell-based activated carbon. Separation Science and Technology,46(15), 2367–2379. https://doi.org/10.1080/01496395.2011.595756.
Bielicka, A., Bojanowska, I., & Wisniewski, A. (2005). Two faces of chromium-pollutant and bioelement. Polish Journal of Environmental Studies,14(1), 5–10.
Bird, M. I., Wurster, C. M., de Paula Silva, P. H., Bass, A. M., & De Nys, R. (2011). Algal biochar–production and properties. Bioresource Technology,102(2), 1886–1891. https://doi.org/10.1016/j.biortech.2010.07.106.
Bolan, N. S., Adriano, D. C., & Curtin, D. (2003a). Soil acidification and liming interactions with nutrient and heavy metal transformation and bioavailability. Advances in Agronomy,78(21), 5–272. https://doi.org/10.1016/S0065-2113(02)78006-1.
Bolan, N. S., Adriano, D. C., Natesan, R., & Koo, B. J. (2003b). Effects of organic amendments on the reduction and phytoavailability of chromate in mineral soil. Journal of Environmental Quality,32(1), 120–128. https://doi.org/10.2134/jeq2003.1200.
Cao, H., & Jin, W. (2015). Industrial Cr(VI) pollution analysis and control strategies in China. In The 5th international symposium on metallomics, Guangxi, China.
CCME. (2015). Canadian soil quality guidelines for the protection of environmental and human health. Canada Council of Ministers of the Environment Winnipeg.
Cefalu, W. T., & Hu, F. B. (2004). Role of chromium in human health and in diabetes. Diabetes Care,27(11), 2741–2751. https://doi.org/10.2337/diacare.27.11.2741.
Cha, J. S., Park, S. H., Jung, S. C., Ryu, C., Jeon, J. K., Shin, M. C., et al. (2016). Production and utilization of biochar: A review. Journal of Industrial and Engineering Chemistry,40, 1–15. https://doi.org/10.1016/j.jiec.2016.06.002.
Chen, X., Chen, G., Chen, L., Chen, Y., Lehmann, J., McBride, M. B., et al. (2011). Adsorption of copper and zinc by biochars produced from pyrolysis of hardwood and corn straw in aqueous solution. Bioresource Technology,102(19), 8877–8884. https://doi.org/10.1016/j.biortech.2011.06.078.
Choppala, G., Bolan, N., Kunhikrishnan, A., & Bush, R. (2016). Differential effect of biochar upon reduction-induced mobility and bioavailability of arsenate and chromate. Chemosphere,144, 374–381. https://doi.org/10.1016/j.chemosphere.2015.08.043.
Choppala, G., Bolan, N., Lamb, D., & Kunhikrishnan, A. (2013). Comparative sorption and mobility of Cr(III) and Cr(VI) species in a range of soils: Implications to bioavailability. Water, Air, and Soil pollution,224(12), 1699. https://doi.org/10.1007/s11270-013-1699-6.
Choppala, G., Kunhikrishnan, A., Seshadri, B., Park, J. H., Bush, R., & Bolan, N. (2018). Comparative sorption of chromium species as influenced by pH, surface charge and organic matter content in contaminated soils. Journal of Geochemical Exploration,184, 255–260. https://doi.org/10.1016/j.gexplo.2016.07.012.
Choudhary, B., & Paul, D. (2018). Isotherms, kinetics and thermodynamics of hexavalent chromium removal using biochar. Journal of Environmental Chemical Engineering,6(2), 2335–2343. https://doi.org/10.1016/j.jece.2018.03.028.
Choudhary, B., Paul, D., Singh, A., & Gupta, T. (2017). Removal of hexavalent chromium upon interaction with biochar under acidic conditions: Mechanistic insights and application. Environmental Science and Pollution Research,24(20), 16786–16797. https://doi.org/10.1007/s11356-017-9322-9.
Chun, Y., Sheng, G., Chiou, C. T., & Xing, B. (2004). Compositions and sorptive properties of crop residue-derived chars. Environmental Science and Technology,38(17), 4649–4655. https://doi.org/10.1021/es035034w.
Costa, M., & Klein, C. B. (2006). Toxicity and carcinogenicity of chromium compounds in humans. Critical Reviews in Toxicology, 36(2), 155–163.
Crane-Droesch, A., Abiven, S., Jeffery, S., & Torn, M. S. (2013). Heterogeneous global crop yield response to biochar: A meta-regression analysis. Environmental Research Letters,8(4), 044049. https://doi.org/10.1088/1748-9326/8/4/044049.
da Costa Cunha, G., Peixoto, J. A., de Souza, D. R., Romão, L. P. C., & Macedo, Z. S. (2016). Recycling of chromium wastes from the tanning industry to produce ceramic nanopigments. Green Chemistry,18(19), 5342–5356. https://doi.org/10.1039/C6GC01562J.
Deng, H. Y., & Chen, G. C. (2012). Progress in research on microbial remediation technologies of chromium-contaminated soil. Earth and Environment,40, 466–472. https://doi.org/10.14050/j.cnki.1672-9250.2012.03.018.
Deveci, H., & Kar, Y. (2013). Adsorption of hexavalent chromium from aqueous solutions by bio-chars obtained during biomass pyrolysis. Journal of Industrial and Engineering Chemistry,19(1), 190–196. https://doi.org/10.1016/j.jiec.2012.08.001.
Dhal, B., Thatoi, H. N., Das, N. N., & Pandey, B. D. (2013). Chemical and microbial remediation of hexavalent chromium from contaminated soil and mining/metallurgical solid waste: A review. Journal of Hazardous Materials,250, 272–291. https://doi.org/10.1016/j.jhazmat.2013.01.048.
Ding, C., Li, X., Zhang, T., Ma, Y., & Wang, X. (2014). Phytotoxicity and accumulation of chromium in carrot plants and the derivation of soil thresholds for Chinese soils. Ecotoxicology and Environmental Safety,108, 179–186. https://doi.org/10.1016/j.ecoenv.2014.07.006.
Dong, H., Deng, J., Xie, Y., Zhang, C., Jiang, Z., Cheng, Y., et al. (2017). Stabilization of nanoscale zero-valent iron (nZVI) with modified biochar for Cr(VI) removal from aqueous solution. Journal of Hazardous Materials,332, 79–86. https://doi.org/10.1016/j.jhazmat.2017.03.002.
Dong, X., Ma, L. Q., Gress, J., Harris, W., & Li, Y. (2014). Enhanced Cr(VI) reduction and As (III) oxidation in ice phase: Important role of dissolved organic matter from biochar. Journal of Hazardous Materials,267, 62–70. https://doi.org/10.1016/j.jhazmat.2013.12.027.
Dong, X., Ma, L. Q., & Li, Y. (2011). Characteristics and mechanisms of hexavalent chromium removal by biochar from sugar beet tailing. Journal of Hazardous Materials,190(1–3), 909–915. https://doi.org/10.1016/j.jhazmat.2011.04.008.
Dotaniya, M. L., Thakur, J. K., Meena, V. D., Jajoria, D. K., & Rathor, G. (2014). Chromium pollution: A threat to environment—A review. Agricultural Reviews,35(2), 153–157. https://doi.org/10.5958/0976-0741.2014.00094.4.
Duku, M. H., Gu, S., & Hagan, E. B. (2011). Biochar production potential in Ghana—A review. Renewable and Sustainable Energy Reviews,15(8), 3539–3551. https://doi.org/10.1016/j.rser.2011.05.010.
Fan, Z., Zhang, Q., Gao, B., Li, M., Liu, C., & Qiu, Y. (2019). Removal of hexavalent chromium by biochar supported nZVI composite: Batch and fixed-bed column evaluations, mechanisms, and secondary contamination prevention. Chemosphere,217, 85–94. https://doi.org/10.1016/j.chemosphere.2018.11.009.
Fantoni, D., Brozzo, G., Canepa, M., Cipolli, F., Marini, L., Ottonello, G., et al. (2002). Natural hexavalent chromium in groundwaters interacting with ophiolitic rocks. Environmental Geology,42(8), 871–882. https://doi.org/10.1007/s00254-002-0605-0.
Fendorf, S., Wielinga, B. W., & Hansel, C. M. (2000). Chromium transformations in natural environments: The role of biological and abiological processes in chromium (VI) reduction. International Geology Review,42(8), 691–701. https://doi.org/10.1080/00206810009465107.
Fomina, M., & Gadd, G. M. (2014). Biosorption: Current perspectives on concept, definition and application. Bioresource Technology,160, 3–14. https://doi.org/10.1016/j.biortech.2013.12.102.
Gan, C., Liu, Y., Tan, X., Wang, S., Zeng, G., Zheng, B., et al. (2015). Effect of porous zinc–biochar nanocomposites on Cr(VI) adsorption from aqueous solution. RSC Advances,5(44), 35107–35115. https://doi.org/10.1039/C5RA04416B.
GB 15618-2018.
Gheju, M. (2011). Hexavalent chromium reduction with zero-valent iron (ZVI) in aquatic systems. Water, Air, and Soil pollution,222(1–4), 103–148. https://doi.org/10.1007/s11270-011-0812-y.
Ghorbani-Khosrowshahi, S., & Behnajady, M. A. (2016). Chromium (VI) adsorption from aqueous solution by prepared biochar from Onopordom Heteracanthom. International Journal of Environmental Science and Technology,13(7), 1803–1814. https://doi.org/10.1007/s13762-016-0978-3.
Gil, M. V., Fermoso, J., Pevida, C., Pis, J. J., & Rubiera, F. (2010). Intrinsic char reactivity of plastic waste (PET) during CO2 gasification. Fuel Processing Technology,91(11), 1776–1781. https://doi.org/10.1016/j.fuproc.2010.07.019.
Gil-Cardeza, M. L., Ferri, A., Cornejo, P., & Gomez, E. (2014). Distribution of chromium species in a Cr-polluted soil: Presence of Cr(III) in glomalin related protein fraction. Science of the Total Environment,493, 828–833. https://doi.org/10.1016/j.scitotenv.2014.06.080.
Grierson, S., Strezov, V., & Shah, P. (2011). Properties of oil and char derived from slow pyrolysis of Tetraselmis chui. Bioresource Technology,102(17), 8232–8240. https://doi.org/10.1016/j.biortech.2011.06.010.
Han, Y., Cao, X., Ouyang, X., Sohi, S. P., & Chen, J. (2016). Adsorption kinetics of magnetic biochar derived from peanut hull on removal of Cr(VI) from aqueous solution: Effects of production conditions and particle size. Chemosphere,145, 336–341. https://doi.org/10.1016/j.chemosphere.2015.11.050.
Harvey, O. R., Herbert, B. E., Rhue, R. D., & Kuo, L. J. (2011). Metal interactions at the biochar–water interface: energetics and structure–sorption relationships elucidated by flow adsorption microcalorimetry. Environmental Science anf Technology,45(13), 5550–5556. https://doi.org/10.1021/es104401h.
He, F., & Zhao, D. (2005). Preparation and characterization of a new class of starch-stabilized bimetallic nanoparticles for degradation of chlorinated hydrocarbons in water. Environmental Science and Technology,39(9), 3314–3320. https://doi.org/10.1021/es048743y.
He, L., Fan, S., Müller, K., Wang, H., Che, L., Xu, S., et al. (2018). Comparative analysis biochar and compost-induced degradation of di-(2-ethylhexyl) phthalate in soils. Science of the Total Environment,625, 987–993. https://doi.org/10.1016/j.scitotenv.2018.01.002.
Headlam, H. A., & Lay, P. A. (2016). Spectroscopic characterization of genotoxic chromium(v) peptide complexes: Oxidation of chromium(iii) triglycine, tetraglycine and pentaglycine complexes. Journal of Inorganic Biochemistry,162, 227–237. https://doi.org/10.1016/j.jinorgbio.2016.06.015.
Hu, X. J., Liu, Y. G., Zeng, G. M., You, S. H., Wang, H., Hu, X., et al. (2014). Effects of background electrolytes and ionic strength on enrichment of Cd (II) ions with magnetic graphene oxide–supported sulfanilic acid. Journal of Colloid and Interface Science,435, 138–144. https://doi.org/10.1016/j.jcis.2014.08.054.
Huang, P., Ge, C., Feng, D., Yu, H., Luo, J., Li, J., et al. (2018). Effects of metal ions and pH on ofloxacin sorption to cassava residue-derived biochar. Science of the Total Environment,616, 1384–1391. https://doi.org/10.1016/j.scitotenv.2017.10.177.
Huang, X., Liu, Y., Liu, S., Tan, X., Ding, Y., Zeng, G., et al. (2016). Effective removal of Cr(VI) using β-cyclodextrin–chitosan modified biochars with adsorption/reduction bifuctional roles. RSC Advances,6(1), 94–104. https://doi.org/10.1039/C5RA22886G.
Huggins, T. M., Haeger, A., Biffinger, J. C., & Ren, Z. J. (2016). Granular biochar compared with activated carbon for wastewater treatment and resource recovery. Water Research,94, 225–232. https://doi.org/10.1016/j.watres.2016.02.059.
Inyang, M. I., Gao, B., Yao, Y., Xue, Y., Zimmerman, A., Mosa, A., et al. (2016). A review of biochar as a low-cost adsorbent for aqueous heavy metal removal. Critical Reviews in Environmental Science and Technology,46(4), 406–433. https://doi.org/10.1080/10643389.2015.1096880.
Jain, M., Garg, V. K., & Kadirvelu, K. (2013). Chromium removal from aqueous system and industrial wastewater by agricultural wastes. Bioremediation Journal,17(1), 30–39. https://doi.org/10.1080/10889868.2012.731450.
Jaishankar, M., Tseten, T., Anbalagan, N., Mathew, B. B., & Beeregowda, K. N. (2014). Toxicity, mechanism and health effects of some heavy metals. Interdisciplinary Toxicology,7(2), 60–72. https://doi.org/10.2478/intox-2014-0009.
Jiang, L., Liu, S., Liu, Y., Zeng, G., Guo, Y., Yin, Y., et al. (2017). Enhanced adsorption of hexavalent chromium by a biochar derived from ramie biomass (Boehmeria nivea (L.) Gaud.) modified with β-cyclodextrin/poly (l-glutamic acid). Environmental Science and Pollution Research,24(30), 23528–23537. https://doi.org/10.1007/s11356-017-9833-4.
Jiang, T. Y., Jiang, J., Xu, R. K., & Li, Z. (2012). Adsorption of Pb(II) on variable charge soils amended with rice-straw derived biochar. Chemosphere,89(3), 249–256. https://doi.org/10.1016/j.chemosphere.2012.04.028.
Jin, W., Du, H., Zheng, S., & Zhang, Y. (2016). Electrochemical processes for the environmental remediation of toxic Cr(VI): A review. Electrochimica Acta,191, 1044–1055. https://doi.org/10.1016/j.electacta.2016.01.130.
Jindo, K., Mizumoto, H., Sawada, Y., Sanchez-Monedero, M. A., & Sonoki, T. (2014). Physical and chemical characterization of biochars derived from different agricultural residues. Biogeosciences,11(23), 6613–6621. https://doi.org/10.5194/bg-11-6613-2014.
Jobby, R., & Desai, N. (2017). Bioremediation of heavy metals. In P. Kumar, B. R. Gurjar, & J. N. Govil (Eds.), Biodegradation and bioremediation. Environmental science and engineering (pp. 201–220). New Delhi: Studium Press.
Jobby, R., Jha, P., Yadav, A. K., & Desai, N. (2018). Biosorption and biotransformation of hexavalent chromium [Cr(VI)]: A comprehensive review. Chemosphere,207, 255–266. https://doi.org/10.1016/j.chemosphere.2018.05.050.
Joint FAO/WHO food standards programme, Codex alimentarius commission, Twenty-fourth session, Geneva, Switzerland, 2–7 July 2001.
Joseph, S. D., Downie, A., Munroe, P., Crosky, A., & Lehmann, J. (2007). Biochar for carbon sequestration, reduction of greenhouse gas emissions and enhancement of soil fertility; A review of the materials science. In Proceedings of the Australian combustion symposium (pp. 130–133).
Kabata-Pendias, A. (2010). Trace elements in soils and plants. CRC press.
Karakoyun, N., Kubilay, S., Aktas, N., Turhan, O., Kasimoglu, M., Yilmaz, S., et al. (2011). Hydrogel-biochar composites for effective organic contaminant removal from aqueous media. Desalination,280(1–3), 319–325. https://doi.org/10.1016/j.desal.2011.07.014.
Keiluweit, M., & Kleber, M. (2009). Molecular-level interactions in soils and sediments: The role of aromatic π-systems. Environmental Science and Technology,43(10), 3421–3429. https://doi.org/10.1021/es8033044.
Keng, P. S., Lee, S. L., Ha, S. T., Hung, Y. T., & Ong, S. T. (2014). Removal of hazardous heavy metals from aqueous environment by low-cost adsorption materials. Environmental Chemistry Letters,12(1), 15–25. https://doi.org/10.1007/s10311-013-0427-1.
Khalid, S., Shahid, M., Niazi, N. K., Murtaza, B., Bibi, I., & Dumat, C. (2017). A comparison of technologies for remediation of heavy metal contaminated soils. Journal of Geochemical Exploration,182, 247–268. https://doi.org/10.1016/j.gexplo.2016.11.021.
Kumar, S., Loganathan, V. A., Gupta, R. B., & Barnett, M. O. (2011). An assessment of U (VI) removal from groundwater using biochar produced from hydrothermal carbonization. Journal of Environmental Management,92(10), 2504–2512. https://doi.org/10.1016/j.jenvman.2011.05.013.
Kumpiene, J., Lagerkvist, A., & Maurice, C. (2008). Stabilization of As, Cr, Cu, Pb and Zn in soil using amendments—A review. Waste Management,28(1), 215–225. https://doi.org/10.1016/j.wasman.2006.12.012.
Kunhikrishnan, A., Choppala, G., Seshadri, B., Wijesekara, H., Bolan, N. S., Mbene, K., et al. (2017). Impact of wastewater derived dissolved organic carbon on reduction, mobility, and bioavailability of As (V) and Cr(VI) in contaminated soils. Journal of Environmental Management,186, 183–191. https://doi.org/10.1016/j.jenvman.2016.08.020.
Li, H., Dong, X., da Silva, E. B., de Oliveira, L. M., Chen, Y., & Ma, L. Q. (2017). Mechanisms of metal sorption by biochars: Biochar characteristics and modifications. Chemosphere,178, 466–478. https://doi.org/10.1016/j.chemosphere.2017.03.072.
Li, J., Shen, F., Yang, G., Zhang, Y., Deng, S., Zhang, J., et al. (2018). Valorizing rice straw and its anaerobically digested residues for biochar to remove Pb(II) from aqueous solution. International Journal of Polymer Science. https://doi.org/10.1155/2018/2684962.
Li, Z., Song, Z., Singh, B. P., & Wang, H. (2019). The impact of crop residue biochars on silicon and nutrient cycles in croplands. Science of the Total Environment, 659, 673–680.
Lilli, M. A., Moraetis, D., Nikolaidis, N. P., Karatzas, G. P., & Kalogerakis, N. (2015). Characterization and mobility of geogenic chromium in soils and river bed sediments of Asopos basin. Journal of Hazardous Materials,281, 12–19. https://doi.org/10.1016/j.jhazmat.2014.07.037.
Liu, Z., & Zhang, F. S. (2009). Removal of lead from water using biochars prepared from hydrothermal liquefaction of biomass. Journal of Hazardous Materials,167(1–3), 933–939. https://doi.org/10.1016/j.jhazmat.2009.01.085.
Lu, A., Zhong, S., Chen, J., Shi, J., Tang, J., & Lu, X. (2006). Removal of Cr(VI) and Cr(III) from aqueous solutions and industrial wastewaters by natural clino-pyrrhotite. Environmental Science and Technology,40(9), 3064–3069. https://doi.org/10.1021/es052057x.
Lu, K., Yang, X., Gielen, G., Bolan, N., Ok, Y. S., Niazi, N. K., et al. (2017). Effect of bamboo and rice straw biochars on the mobility and redistribution of heavy metals (Cd, Cu, Pb and Zn) in contaminated soil. Journal of Environmental Management,186, 285–292. https://doi.org/10.1016/j.jenvman.2016.05.068.
Luo, J., Li, X., Ge, C., Müller, K., Yu, H., Huang, P., et al. (2018). Sorption of norfloxacin, sulfamerazine and oxytetracycline by KOH-modified biochar under single and ternary systems. Bioresource Technology,263, 385–392. https://doi.org/10.1016/j.biortech.2018.05.022.
Lyu, H., Tang, J., Huang, Y., Gai, L., Zeng, E. Y., Liber, K., et al. (2017). Removal of hexavalent chromium from aqueous solutions by a novel biochar supported nanoscale iron sulfide composite. Chemical Engineering Journal,322, 516–524. https://doi.org/10.1016/j.cej.2017.04.058.
Lyu, H., Zhao, H., Tang, J., Gong, Y., Huang, Y., Wu, Q., et al. (2018). Immobilization of hexavalent chromium in contaminated soils using biochar supported nanoscale iron sulfide composite. Chemosphere,194, 360–369. https://doi.org/10.1016/j.chemosphere.2017.11.182.
Ma, H. W., Hung, M. L., & Chen, P. C. (2007). A systemic health risk assessment for the chromium cycle in Taiwan. Environment International,33(2), 206–218. https://doi.org/10.1016/j.envint.2006.09.011.
Ma, Y., Liu, W. J., Zhang, N., Li, Y. S., Jiang, H., & Sheng, G. P. (2014). Polyethylenimine modified biochar adsorbent for hexavalent chromium removal from the aqueous solution. Bioresource Technology,169, 403–408. https://doi.org/10.1016/j.biortech.2014.07.014.
Malaviya, P., & Singh, A. (2011). Physicochemical technologies for remediation of chromium-containing waters and wastewaters. Critical Reviews in Environmental Science and Technology,41(12), 1111–1172. https://doi.org/10.1080/10643380903392817.
Mandal, S., Sarkar, B., Bolan, N., Ok, Y. S., & Naidu, R. (2017). Enhancement of chromate reduction in soils by surface modified biochar. Journal of Environmental Management,186, 277–284. https://doi.org/10.1016/j.jenvman.2016.05.034.
McBride, M. B., & MartÍnez, C. E. (2000). Copper phytotoxicity in a contaminated soil: Remediation tests with adsorptive materials. Environmental Science and Technology,34(20), 4386–4391. https://doi.org/10.1021/es0009931.
McNeill, L. S., McLean, J. E., Parks, J. L., & Edwards, M. A. (2012). Hexavalent chromium review, part 2: Chemistry, occurrence, and treatment. Journal-American Water Works Association,104(7), E395–E405. https://doi.org/10.5942/jawwa.2012.104.0092.
Melo, T. M., Bottlinger, M., Schulz, E., Leandro, W. M., de Oliveira, S. B., de Aguiar Filho, A. M., et al. (2019). Management of biosolids-derived hydrochar (Sewchar): Effect on plant germination, and farmers’ acceptance. Journal of Environmental Management,237, 200–214. https://doi.org/10.1016/j.jenvman.2019.02.042.
Messer, J., Reynolds, M., Stoddard, L., & Zhitkovich, A. (2006). Causes of DNA single-strand breaks during reduction of chromate by glutathione in vitro and in cells. Free Radical Biology and Medicine,40(11), 1981–1992. https://doi.org/10.1016/j.freeradbiomed.2006.01.028.
Michalak, I., Chojnacka, K., & Witek-Krowiak, A. (2013). State of the art for the biosorption process—A review. Applied Biochemistry and Biotechnology,170(6), 1389–1416. https://doi.org/10.1007/s12010-013-0269-0.
Ministry of Ecology and Environment of the People’s Republic of China. (2015). http://www.zhb.gov.cn/hjzl/zghjzkgb/lnzghjzkgb/201605/P020160526564730573906.
Miretzky, P., & Cirelli, A. F. (2010). Cr(VI) and Cr(III) removal from aqueous solution by raw and modified lignocellulosic materials: A review. Journal of Hazardous Materials,180(1–3), 1–19. https://doi.org/10.1016/j.jhazmat.2010.04.060.
Mishra, S., & Bharagava, R. N. (2016). Toxic and genotoxic effects of hexavalent chromium in environment and its bioremediation strategies. Journal of Environmental Science and Health, Part C,34, 1–32. https://doi.org/10.1080/10590501.2015.1096883.
Mohan, D., & Pittman, C. U., Jr. (2006). Activated carbons and low cost adsorbents for remediation of tri-and hexavalent chromium from water. Journal of Hazardous Materials,137(2), 762–811. https://doi.org/10.1016/j.jhazmat.2006.06.060.
Mohan, D., Rajput, S., Singh, V. K., Steele, P. H., & Pittman, C. U., Jr. (2011). Modeling and evaluation of chromium remediation from water using low cost bio-char, a green adsorbent. Journal of Hazardous Materials,188(1–3), 319–333. https://doi.org/10.1016/j.jhazmat.2011.01.127.
Mukherjee, A., Zimmerman, A. R., & Harris, W. (2011). Surface chemistry variations among a series of laboratory-produced biochars. Geoderma,163(3–4), 247–255. https://doi.org/10.1016/j.geoderma.2011.04.021.
Nanda, S., Dalai, A. K., Berruti, F., & Kozinski, J. A. (2016). Biochar as an exceptional bioresource for energy, agronomy, carbon sequestration, activated carbon and specialty materials. Waste and Biomass Valorization,7(2), 201–235. https://doi.org/10.1007/s12649-015-9459-z.
NEPM (National Environmental Protection Council). (2013). National environmental protection measure (NEPM). Schedule B1: Guideline on investigation levels for soil and groundwater. https://www.comlaw.gov.au/Details/F2013C00288/Html/Volume_2.
Nie, C., Yang, X., Niazi, N. K., Xu, X., Wen, Y., Rinklebe, J., et al. (2018). Impact of sugarcane bagasse-derived biochar on heavy metal availability and microbial activity: A field study. Chemosphere,200, 274–282. https://doi.org/10.1016/j.chemosphere.2018.02.134.
Palansooriya, K. N., Wong, J. T. F., Hashimoto, Y., Huang, L., Rinklebe, J., Chang, S. X., et al. (2019). Response of microbial communities to biochar-amended soils: A critical review. Biochar,1, 3–22.
Panwar, N. L., Pawar, A., & Salvi, B. L. (2019). Comprehensive review on production and utilization of biochar. SN Applied Sciences,1, 168. https://doi.org/10.1007/s42452-019-0172-6.
Papp, J. F. (2004). Chromium use by market in the United States. In Proceedings: Tenth international ferroalloys congress (pp. 770–778).
Park, D., Yun, Y. S., & Park, J. M. (2005). Studies on hexavalent chromium biosorption by chemically-treated biomass of Ecklonia sp. Chemosphere,60, 1356–1364. https://doi.org/10.1016/j.chemosphere.2005.02.020.
Park, D., Yun, Y. S., & Park, J. M. (2010). The past, present, and future trends of biosorption. Biotechnology and Bioprocess Engineering,15(1), 86–102. https://doi.org/10.1007/s12257-009-0199-4.
Park, J. H., Cho, J. S., Ok, Y. S., Kim, S. H., Kang, S. W., Choi, I. W., et al. (2015). Competitive adsorption and selectivity sequence of heavy metals by chicken bone-derived biochar: Batch and column experiment. Journal of Environmental Science and Health, Part A,50(11), 1194–1204. https://doi.org/10.1080/10934529.2015.1047680.
Peng, Z., Zhao, H., Lyu, H., Wang, L., Huang, H., Nan, Q., et al. (2018). UV modification of biochar for enhanced hexavalent chromium removal from aqueous solution. Environmental Science and Pollution Research,25(11), 10808–10819. https://doi.org/10.1007/s11356-018-1353-3.
PRC. (1996). Integrated wastewater discharge standard. EPSPRC GB 8978, PRC, China.
Pure Earth. (2018). Fact sheet: Chromium (2015)—Pure earth [online] Available at: http://www.pureearth.org/fact-sheet-chromium-2015/. Accessed 11 February 2018.
Qin, P., Wang, H., Yang, X., He, L., Müller, K., Shaheen, S. M., et al. (2018). Bamboo-and pig-derived biochars reduce leaching losses of dibutyl phthalate, cadmium, and lead from co-contaminated soils. Chemosphere,198, 450–459. https://doi.org/10.1016/j.chemosphere.2018.01.162.
Rajapaksha, A. U., Alam, M. S., Chen, N., Alessi, D. S., Igalavithana, A. D., Tsang, D. C., et al. (2018). Removal of hexavalent chromium in aqueous solutions using biochar: Chemical and spectroscopic investigations. Science of the Total Environment,625, 1567–1573. https://doi.org/10.1016/j.scitotenv.2017.12.195.
Rajapaksha, A. U., Vithanage, M., Ok, Y. S., & Oze, C. (2013). Cr (VI) formation related to Cr(III)-muscovite and birnessite interactions in ultramafic environments. Environmental Science and Technology,47(17), 9722–9729. https://doi.org/10.1021/es4015025.
Rakhunde, R., Deshpande, L., & Juneja, H. D. (2012). Chemical speciation of chromium in water: A review. Critical Reviews in Environmental Science and Technology,42(7), 776–810. https://doi.org/10.1080/10643389.2010.534029.
Ramlow, M., Foster, E. J., Del Grosso, S. J., & Cotrufo, M. F. (2019). Broadcast woody biochar provides limited benefits to deficit irrigation maize in Colorado. Agriculture, Ecosystems & Environment,269, 71–81. https://doi.org/10.1016/j.agee.2018.09.017.
Reale, L., Ferranti, F., Mantilacci, S., Corboli, M., Aversa, S., Landucci, F., et al. (2016). Cyto-histological and morpho-physiological responses of common duckweed (Lemna minor L.) to chromium. Chemosphere,145, 98–105. https://doi.org/10.1016/j.chemosphere.2015.11.047.
Rhee, S. W., & Park, H. S. (2010). Effect of mixing ratio of woody waste and food waste on the characteristics of carbonization residue. Journal of Material Cycles and Waste Management,12(3), 220–226. https://doi.org/10.1007/s10163-010-0291-z.
Rinklebe, J., Shaheen, S. M., Schröter, F., & Rennert, T. (2016). Exploiting biogeochemical and spectroscopic techniques to assess the geochemical distribution and release dynamics of chromium and lead in a contaminated floodplain soil. Chemosphere,150, 390–397. https://doi.org/10.1016/j.chemosphere.2016.02.021.
Rondon, M. A., Lehmann, J., Ramírez, J., & Hurtado, M. (2007). Biological nitrogen fixation by common beans (Phaseolus vulgaris L.) increases with bio-char additions. Biology and Fertility of Soils,43(6), 699–708. https://doi.org/10.1007/s00374-006-0152-z.
Rosales, E., Meijide, J., Pazos, M., & Sanromán, M. A. (2017). Challenges and recent advances in biochar as low-cost biosorbent: From batch assays to continuous-flow systems. Bioresource Technology,246, 176–192. https://doi.org/10.1016/j.biortech.2017.06.084.
Ross, S. M. (1994). Sources and forms of potentially toxic metals in soil-plant systems. Toxic Metals in Soil-Plant Systems, 3–25.
Saha, R., Nandi, R., & Saha, B. (2011). Sources and toxicity of hexavalent chromium. Journal of Coordination Chemistry,64(10), 1782–1806. https://doi.org/10.1080/00958972.2011.583646.
Sehrish, A. K., Aziz, R., Hussain, M. M., Rafiq, M. T., Rizwan, M., Muhammad, N., et al. (2019). Effect of poultry litter biochar on chromium (Cr) bioavailability and accumulation in spinach (Spinacia oleracea) grown in Cr-polluted soil. Arabian Journal of Geosciences,12(2), 57. https://doi.org/10.1007/s12517-018-4213-z.
Shaheen, S. M., Niazi, N. K., Hassan, N. E., Bibi, I., Wang, H., Tsang, D. C., et al. (2019). Wood-based biochar for the removal of potentially toxic elements in water and wastewater: A critical review. International Materials Reviews,64(4), 216–247. https://doi.org/10.1080/09506608.2018.1473096.
Shaheen, S. M., Rinklebe, J., Rupp, H., & Meissner, R. (2014). Lysimeter trials to assess the impact of different flood–dry-cycles on the dynamics of pore water concentrations of As, Cr, Mo and V in a contaminated floodplain soil. Geoderma,228, 5–13. https://doi.org/10.1016/j.geoderma.2013.12.030.
Shahid, M., Shamshad, S., Rafiq, M., Khalid, S., Bibi, I., Niazi, N. K., et al. (2017). Chromium speciation, bioavailability, uptake, toxicity and detoxification in soil–plant system: A review. Chemosphere,178, 513–533. https://doi.org/10.1016/j.chemosphere.2017.03.074.
Shang, J., Zong, M., Yu, Y., Kong, X., Du, Q., & Liao, Q. (2017). Removal of chromium (VI) from water using nanoscale zerovalent iron particles supported on herb-residue biochar. Journal of Environmental Management,197, 331–337. https://doi.org/10.1016/j.jenvman.2017.03.085.
Shen, Y. S., Wang, S. L., Tzou, Y. M., Yan, Y. Y., & Kuan, W. H. (2012). Removal of hexavalent Cr by coconut coir and derived chars—The effect of surface functionality. Bioresource Technology,104, 165–172. https://doi.org/10.1016/j.biortech.2011.10.096.
Solaiman, Z. M., & Anawar, H. M. (2015). Application of biochars for soil constraints: Challenges and solutions. Pedosphere,25(5), 631–638. https://doi.org/10.1016/S1002-0160(15)30044-8.
Song, C., Shan, S., Müller, K., Wu, S., Niazi, N. K., Xu, S., et al. (2018). Characterization of pig manure-derived hydrochars for their potential application as fertilizer. Environmental Science and Pollution Research,25(26), 25772–25779. https://doi.org/10.1007/s11356-017-0301-y.
Su, H., Fang, Z., Tsang, P. E., Zheng, L., Cheng, W., Fang, J., et al. (2016). Remediation of hexavalent chromium contaminated soil by biochar-supported zero-valent iron nanoparticles. Journal of Hazardous Materials,318, 533–540. https://doi.org/10.1016/j.jhazmat.2016.07.039.
Subedi, R., Taupe, N., Pelissetti, S., Petruzzelli, L., Bertora, C., Leahy, J. J., et al. (2016). Greenhouse gas emissions and soil properties following amendment with manure-derived biochars: Influence of pyrolysis temperature and feedstock type. Journal of Environmental Management,166, 73–83. https://doi.org/10.1016/j.jenvman.2015.10.007.
Sud, D., Mahajan, G., & Kaur, M. P. (2008). Agricultural waste material as potential adsorbent for sequestering heavy metal ions from aqueous solutions—A review. Bioresource Technology,99(14), 6017–6027. https://doi.org/10.1016/j.biortech.2007.11.064.
Sun, Y., Iris, K. M., Tsang, D. C., Cao, X., Lin, D., Wang, L., et al. (2019). Multifunctional iron-biochar composites for the removal of potentially toxic elements, inherent cations, and hetero-chloride from hydraulic fracturing wastewater. Environment International,124, 521–532. https://doi.org/10.1016/j.envint.2019.01.047.
Tripathi, M., Sahu, J. N., & Ganesan, P. (2016). Effect of process parameters on production of biochar from biomass waste through pyrolysis: A review. Renewable and Sustainable Energy Reviews,55, 467–481. https://doi.org/10.1016/j.rser.2015.10.122.
Uchimiya, M., Lima, I. M., Thomas Klasson, K., Chang, S., Wartelle, L. H., & Rodgers, J. E. (2010). Immobilization of heavy metal ions (CuII, CdII, NiII, and PbII) by broiler litter-derived biochars in water and soil. Journal of Agricultural and Food Chemistry,58(9), 5538–5544. https://doi.org/10.1021/jf9044217.
Ullah, I., Nadeem, R., Iqbal, M., & Manzoor, Q. (2013). Biosorption of chromium onto native and immobilized sugarcane bagasse waste biomass. Ecological Engineering,60, 99–107. https://doi.org/10.1016/j.ecoleng.2013.07.028.
USEPA. 1995. USEPA National primary drinking water regulations chromium. EPA No. B11-F-95-002d-T, USEPA, Washington, DC.
Uzoma, K. C., Inoue, M., Andry, H., Fujimaki, H., Zahoor, A., & Nishihara, E. (2011). Effect of cow manure biochar on maize productivity under sandy soil condition. Soil Use and Management,27(2), 205–212. https://doi.org/10.1111/j.1475-2743.2011.00340.x.
Velez, P. A., Talano, M. A., Paisio, C. E., Agostini, E., González, P. S. (2016) Synergistic effect of chickpea plants and as a natural system for chromium phytoremediation. Environmental Technology 38(17), 2164–2172
Vimercati, L., Gatti, M. F., Gagliardi, T., Cuccaro, F., De Maria, L., Caputi, A., et al. (2017). Environmental exposure to arsenic and chromium in an industrial area. Environmental Science and Pollution Research,24(12), 11528–11535. https://doi.org/10.1007/s11356-017-8827-6.
Vogel, C., Radtke, M., Reinholz, U., Schäfers, F., & Adam, C. (2015). Chemical state of chromium, sulfur, and iron in sewage sludge ash based phosphorus fertilizers. ACS Sustainable Chemistry and Engineering,3(10), 2376–2380. https://doi.org/10.1021/acssuschemeng.5b00678.
Wang, C., Gu, L., Ge, S., Liu, X., Zhang, X., & Chen, X. (2018). Remediation potential of immobilized bacterial consortium with biochar as carrier in pyrene-Cr(VI) co-contaminated soil. Environmental Technology. https://doi.org/10.1080/09593330.2018.1441328.
Wang, C., Gu, L., Liu, X., Zhang, X., Cao, L., & Hu, X. (2016). Sorption behavior of Cr(VI) on pineapple-peel-derived biochar and the influence of coexisting pyrene. International Biodeterioration and Biodegradation,111, 78–84. https://doi.org/10.1016/j.ibiod.2016.04.029.
Wang, X. S., Chen, L. F., Li, F. Y., Chen, K. L., Wan, W. Y., & Tang, Y. J. (2010). Removal of Cr(VI) with wheat-residue derived black carbon: Reaction mechanism and adsorption performance. Journal of Hazardous Materials,175(1–3), 816–822. https://doi.org/10.1016/j.jhazmat.2009.10.082.
Wang, Y., Peng, B., Yang, Z., Chai, L., Liao, Q., Zhang, Z., et al. (2015). Bacterial community dynamics during bioremediation of Cr(VI)-contaminated soil. Applied Soil Ecology,85, 50–55. https://doi.org/10.1016/j.apsoil.2014.09.002.
Wu, D., Senbayram, M., Zang, H., Ugurlar, F., Aydemir, S., Brüggemann, N., et al. (2018). Effect of biochar origin and soil pH on greenhouse gas emissions from sandy and clay soils. Applied Soil Ecology,129, 121–127. https://doi.org/10.1016/j.apsoil.2018.05.009.
Wu, W., Li, J., Lan, T., Müller, K., Niazi, N. K., Chen, X., et al. (2017). Unraveling sorption of lead in aqueous solutions by chemically modified biochar derived from coconut fiber: A microscopic and spectroscopic investigation. Science of the Total Environment,576, 766–774. https://doi.org/10.1016/j.scitotenv.2016.10.163.
Wu, W., Yang, M., Feng, Q., McGrouther, K., Wang, H., Lu, H., et al. (2012). Chemical characterization of rice straw-derived biochar for soil amendment. Biomass and Bioenergy,47, 268–276. https://doi.org/10.1016/j.biombioe.2012.09.034.
Xia, S., Song, Z., Jeyakumar, P., Shaheen, S. M., Rinklebe, J., Ok, Y. S., et al. (2019). A critical review on bioremediation technologies for Cr(VI)-contaminated soils and wastewater. Critical Reviews in Environmental Science and Technology. https://doi.org/10.1080/10643389.2018.1564526.
Xiao, R., Wang, J. J., Li, R., Park, J., Meng, Y., Zhou, B., et al. (2018). Enhanced sorption of hexavalent chromium [Cr(VI)] from aqueous solutions by diluted sulfuric acid-assisted MgO-coated biochar composite. Chemosphere,208, 408–416. https://doi.org/10.1016/j.chemosphere.2018.05.175.
Xie, T., Reddy, K. R., Wang, C., Yargicoglu, E., & Spokas, K. (2015). Characteristics and applications of biochar for environmental remediation: A review. Critical Reviews in Environmental Science and Technology,45(9), 939–969. https://doi.org/10.1080/10643389.2014.924180.
Xin, Y., Cao, H., Yuan, Q., & Wang, D. (2017). Two-step gasification of cattle manure for hydrogen-rich gas production: Effect of biochar preparation temperature and gasification temperature. Waste Management,68, 618–625. https://doi.org/10.1016/j.wasman.2017.06.007.
Xu, X., Cao, X., Zhao, L., Wang, H., Yu, H., & Gao, B. (2013). Removal of Cu, Zn, and Cd from aqueous solutions by the dairy manure-derived biochar. Environmental Science and Pollution Research,20(1), 358–368. https://doi.org/10.1007/s11356-012-0873-5.
Xu, X., Huang, H., Zhang, Y., Xu, Z., & Cao, X. (2019). Biochar as both electron donor and electron shuttle for the reduction transformation of Cr(VI) during its sorption. Environmental Pollution,244, 423–430. https://doi.org/10.1016/j.envpol.2018.10.068.
Xu, Y., & Zhao, D. (2007). Reductive immobilization of chromate in water and soil using stabilized iron nanoparticles. Water Research,41(10), 2101–2108. https://doi.org/10.1016/j.watres.2007.02.037.
Yahya, M. A., Al-Qodah, Z., & Ngah, C. Z. (2015). Agricultural bio-waste materials as potential sustainable precursors used for activated carbon production: A review. Renewable and Sustainable Energy Reviews,46, 218–235. https://doi.org/10.1016/j.rser.2015.02.051.
Yang, X., Liu, J., McGrouther, K., Huang, H., Lu, K., Guo, X., et al. (2016). Effect of biochar on the extractability of heavy metals (Cd, Cu, Pb, and Zn) and enzyme activity in soil. Environmental Science and Pollution Research,23(2), 974–984. https://doi.org/10.1007/s11356-015-4233-0.
Yang, X., Lu, K., McGrouther, K., Che, L., Hu, G., Wang, Q., et al. (2017). Bioavailability of Cd and Zn in soils treated with biochars derived from tobacco stalk and dead pigs. Journal of Soils and Sediments,17(3), 751–762. https://doi.org/10.1007/s11368-015-1326-9.
Yao, Y., Gao, B., Wu, F., Zhang, C., & Yang, L. (2015). Engineered biochar from biofuel residue: Characterization and its silver removal potential. ACS Applied Materials & Interfaces,7(19), 10634–10640. https://doi.org/10.1021/acsami.5b03131.
Yu, K. L., Lau, B. F., Show, P. L., Ong, H. C., Ling, T. C., Chen, W. H., et al. (2017). Recent developments on algal biochar production and characterization. Bioresource Technology,246, 2–11. https://doi.org/10.1016/j.biortech.2017.08.009.
Yuan, H., Lu, T., Wang, Y., Chen, Y., & Lei, T. (2016). Sewage sludge biochar: Nutrient composition and its effect on the leaching of soil nutrients. Geoderma,267, 17–23. https://doi.org/10.1016/j.geoderma.2015.12.020.
Yuan, J. H., Xu, R. K., & Zhang, H. (2011). The forms of alkalis in the biochar produced from crop residues at different temperatures. Bioresource Technology,102(3), 3488–3497. https://doi.org/10.1016/j.biortech.2010.11.018.
Yuan, Y., Bolan, N., Prévoteau, A., Vithanage, M., Biswas, J. K., Ok, Y. S., et al. (2017). Applications of biochar in redox-mediated reactions. Bioresource Technology,246, 271–281. https://doi.org/10.1016/j.biortech.2017.06.154.
Zama, E. F., Reid, B. J., Arp, H. P. H., Sun, G. X., Yuan, H. Y., & Zhu, Y. G. (2018). Advances in research on the use of biochar in soil for remediation: A review. Journal of Soils and Sediments,18, 2433–2450. https://doi.org/10.1007/s11368-018-2000-9.
Zayed, A. M., & Terry, N. (2003). Chromium in the environment: Factors affecting biological remediation. Plant and Soil,249(1), 139–156. https://doi.org/10.1023/a:1022504826342.
Zelmanov, G., & Semiat, R. (2011). Iron (Fe3+) oxide/hydroxide nanoparticles-based agglomerates suspension as adsorbent for chromium (Cr6+) removal from water and recovery. Separation and Purification Technology,80(2), 330–337. https://doi.org/10.1016/j.seppur.2011.05.016.
Zhang, J., Chen, S., Zhang, H., & Wang, X. (2017). Removal behaviors and mechanisms of hexavalent chromium from aqueous solution by cephalosporin residue and derived chars. Bioresource Technology,238, 484–491. https://doi.org/10.1016/j.biortech.2017.04.081.
Zhang, J., Liu, J., & Liu, R. (2015a). Effects of pyrolysis temperature and heating time on biochar obtained from the pyrolysis of straw and lignosulfonate. Bioresource Technology,176, 288–291. https://doi.org/10.1016/j.biortech.2014.11.011.
Zhang, H., Voroney, R. P., & Price, G. W. (2015b). Effects of temperature and processing conditions on biochar chemical properties and their influence on soil C and N transformations. Soil Biology & Biochemistry,83, 19–28. https://doi.org/10.1016/j.soilbio.2015.01.006.
Zhang, M., Chen, Z., Chen, Q., Zou, H., Lou, J., & He, J. (2008). Investigating DNA damage in tannery workers occupationally exposed to trivalent chromium using comet assay. Mutation Research/Genetic Toxicology and Environmental Mutagenesis,654(1), 45–51. https://doi.org/10.1016/j.mrgentox.2008.04.011.
Zhang, S., Lyu, H., Tang, J., Song, B., Zhen, M., & Liu, X. (2019). A novel biochar supported CMC stabilized nano zero-valent iron composite for hexavalent chromium removal from water. Chemosphere,217, 686–694. https://doi.org/10.1016/j.chemosphere.2018.11.040.
Zhang, W., Mao, S., Chen, H., Huang, L., & Qiu, R. (2013). Pb (II) and Cr(VI) sorption by biochars pyrolyzed from the municipal wastewater sludge under different heating conditions. Bioresource Technology,147, 545–552. https://doi.org/10.1016/j.biortech.2013.08.082.
Zhang, W., & Tsang, D. C. (2019). Sludge-derived biochar and its application in soil fixation. Biochar from Biomass and Waste. https://doi.org/10.1016/B978-0-12-811729-3.00013-3.
Zhitkovich, A. (2011). Chromium in drinking water: Sources, metabolism, and cancer risks. Chemical Research in Toxicology,24(10), 1617–1629. https://doi.org/10.1021/tx200251t.
Zhou, J., Chen, H., Thring, R. W., & Arocena, J. M. (2019). Chemical pretreatment of rice straw biochar: Effect on biochar properties and hexavalent chromium adsorption. International Journal of Environmental Research,13(1), 91–105. https://doi.org/10.1007/s41742-018-0156-1.
Zhou, L., Liu, Y., Liu, S., Yin, Y., Zeng, G., Tan, X., et al. (2016). Investigation of the adsorption–reduction mechanisms of hexavalent chromium by ramie biochars of different pyrolytic temperatures. Bioresource Technology,218, 351–359. https://doi.org/10.1016/j.biortech.2016.06.102.
Zhu, S., Huang, X., Wang, D., Wang, L., & Ma, F. (2018). Enhanced hexavalent chromium removal performance and stabilization by magnetic iron nanoparticles assisted biochar in aqueous solution: Mechanisms and application potential. Chemosphere,207, 50–59. https://doi.org/10.1016/j.chemosphere.2018.05.046.
Zhu, X., Chen, B., Zhu, L., & Xing, B. (2017). Effects and mechanisms of biochar-microbe interactions in soil improvement and pollution remediation: a review. Environmental Pollution, 227, 98–115.
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Xia, S., Song, Z., Jeyakumar, P. et al. Characteristics and applications of biochar for remediating Cr(VI)-contaminated soils and wastewater. Environ Geochem Health 42, 1543–1567 (2020). https://doi.org/10.1007/s10653-019-00445-w
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DOI: https://doi.org/10.1007/s10653-019-00445-w