Photocatalytic remediation of γ-hexachlorocyclohexane contaminated soils using TiO2 and montmorillonite composite photocatalyst
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Cited by (24)
Recent advances in structural engineering of photocatalysts for environmental remediation
2023, Environmental ResearchCitation Excerpt :The photocatalysts for photocatalytic air purification are more competitive than other photocatalytic applications such as aqueous purification, energy production, etc., and therefore, novel photocatalytic materials for air purification are highly desired. In the context of applications of photocatalysis, it could be employed to degrade pesticides in soils, such as pyrene, Diuron, atrazine, 2- chlorophenol, 2,7-dichlorodibenzodixin, phenanthrene, γ-hexachlorocyclohexane, etc. (Lackhoff and Niessner, 2002; Zhang et al., 2008; Chang Chien et al., 2011; Dong et al., 2010; Zhao et al., 2007). Moreover, the heavy metals and organic matters could be removed by photocatalysis, a survey of photocatalytic soil purification is listed in Table 3.
Current heterogeneous catalytic processes for environmental remediation of air, water, and soil
2021, Interface Science and TechnologyRecent advances on the removal of priority organochlorine and organophosphorus biorecalcitrant pesticides defined by Directive 2013/39/EU from environmental matrices by using advanced oxidation processes: An overview (2007-2018)
2020, Journal of Environmental Chemical EngineeringCitation Excerpt :On the contrary, a gap of knowledge is observed for the many other organochlorine substances, such as hexachlorobutadiene, cyclodiene pesticides isodrin, dieldrin, and endrin for which more investigation is required regarding the qualitative and quantitative identification of their intermediate by-products and final metabolites elucidated by the application of various types of AOPs. Moreover, it is worth mentioning that numerous bibliographic data regarding the remediation of soil or sediment matrices contaminated with endosulfan- [72], HCB- [82,83,84,85,86,87,89,99,100,103], HCH- [107,114,116,122,133], DDT- [141–143], and PCP [144,145,155,157,158,162,178,191,207,218–222,229] by AOPs have been published during the same period. The above-mentioned studies implementing soil, or river, lake, and marine sediment as matrices for the treatment of the specific prioritized organochlorine pesticides by using several types of AOPs are translated into ˜16% relative frequency of reports overviewed in present survey, according to the subtotal records of their chemical class (213 for the period 2007–2018).
Non-thermal plasma technology for organic contaminated soil remediation: A review
2017, Chemical Engineering JournalHydroxyl radicals based advanced oxidation processes (AOPs) for remediation of soils contaminated with organic compounds: A review
2016, Chemical Engineering JournalCitation Excerpt :Furthermore, it was found the sensitization of humic substances can enhance of the photodegradation when the content of humic substances is low, however, the abundance of humic substances might scavenge radicals and resulted in inhibition of the photodegradation [100]. Some observations [99,101,102] suggest that the photodegradation rate increases with the pH, the mechanism underlying this stimulatory effect is when the soil pH is higher, more OH can be formed via photo-oxidation of OH−. PAHs are ubiquitous environmental contaminants, which are by-products of fossil fuels processing or combustion [103].
ZnS/MMT nanocomposites: The effect of ZnS loading in MMT on the photocatalytic reduction of carbon dioxide
2014, Applied Catalysis B: EnvironmentalCitation Excerpt :The nanocomposite with TiO2:montmorillonite weight ratio of 0.2:1 showed the highest photocatalytic activity because of its relatively large specific surface area and suitable pore-size distribution. Zhao et al. [37] dealt with the photocatalytic remediation of γ-hexachlorocyclohexane contaminated soils by using the TiO2/montmorillonite composite. Their results indicated that the photocatalytic activity of the composites varied with the content of TiO2 in the order 30% > 50% > 70% > 10% and the strong adsorption capacity of composites and the quantum size effect may contribute to increased photocatalytic activities.
Project supported by the National Natural Science Foundation of China (No. 29977003, 20507011) and the State Ministry of Education of China (No. 00028).