@article{HGNHB8_2021_v40n3_161,
author={Yun-Gu. Kang and Jae-Han. Lee and Jin-Hyuk. Chun and Taek-Keun. Oh},
title={Adsorption Characteristics of NH4+ by Biochar Derived from Rice and Maize Residue},
journal={Korean Journal of Environmental Agriculture},
issn={1225-3537},
year={2021},
volume={40},
number={3},
pages={161-168},
doi={10.5338/KJEA.2021.40.3.19},
url={https://doi.org/10.5338/KJEA.2021.40.3.19}
TY - JOUR
AU - Kang, Yun-Gu.
AU - Lee, Jae-Han.
AU - Chun, Jin-Hyuk.
AU - Oh, Taek-Keun.
TI - Adsorption Characteristics of NH4+ by Biochar Derived from Rice and Maize Residue
T2 - Korean Journal of Environmental Agriculture
PY - 2021
VL - 40
IS - 3
PB - The Korean Society of Environmental Agriculture
SP - 161-168
SN - 1225-3537
AB - BACKGROUND:Biochar has ability to reduce N loss, increase crop yield, and sequestrate carbon in the soil However, there is still limited study concerning the interactive effects of various biochars on NH3 loss and plant growth. This study, therefore, was conducted to investigate the NH4+ adsorption characteristics of biochar derived from rice and maize residues.METHODS AND RESULTS:By-products were pyrolyzed under oxygen-limited conditions at 300-700℃ for 1 hour and used for experiment of NH4+ adsorption in aqueous solution. The adsorption characteristics of biochar were studied using Langmuir isotherm. Biochar yield and hydrogen content decreased with increasing pyrolysis temperatures, whereas pH, EC, and total carbon content increased. The biochar pyrolyzed at lower temperatures was more efficient at NH4+ adsorption than those produced at higher temperatures. In addition, the RL values, indicating equilibrium coefficient were between 0 and 1, confirming that the result was suitable for Langmuir isotherm.CONCLUSION:The maize stalk biochar pyrolyzed at 300℃ was the most efficient to adsorb NH4+ from the aqueous solution. Furthermore, the adsorption results of this experiment were lower than those of other prior studies, which were ascribed to different experimental conditions such as ingredients, and pyrolysis conditions.
KW - Biochar
KW - Langmuir Isotherm
KW - Maize Residue
KW - NH4+
KW - Rice Residue
DO - 10.5338/KJEA.2021.40.3.19
UR - https://doi.org/10.5338/KJEA.2021.40.3.19
ER -
Kang, Y. G., Lee, J. H., Chun, J. H., & Oh, T. K. (2021). Adsorption Characteristics of NH4+ by Biochar Derived from Rice and Maize Residue. Korean Journal of Environmental Agriculture, 40(3), 161-168.
Kang, YG, Lee, JH, Chun, JH & Oh, TK 2021, “Adsorption Characteristics of NH4+ by Biochar Derived from Rice and Maize Residue”, Korean Journal of Environmental Agriculture, vol. 40, no. 3, pp. 161-168. Available from: doi:10.5338/KJEA.2021.40.3.19
Kang, Yun-Gu et al. “Adsorption Characteristics of NH4+ by Biochar Derived from Rice and Maize Residue.” Korean Journal of Environmental Agriculture 40.3 (2021): 161-168.
1. Kang YG, Lee JH, Chun JH, Oh TK. Adsorption Characteristics of NH4+ by Biochar Derived from Rice and Maize Residue. Korean Journal of Environmental Agriculture [Internet]. 2021;40(3): 161-168. Available from: doi:10.5338/KJEA.2021.40.3.19.
Kang, Yun-Gu, Jae-Han Lee, Jin-Hyuk Chun and Taek-Keun Oh. “Adsorption Characteristics of NH4+ by Biochar Derived from Rice and Maize Residue.” Korean Journal of Environmental Agriculture 40, no.3 (2021): 161-168. doi: 10.5338/KJEA.2021.40.3.19.