Remediation of arsenic-contaminated paddy soil by iron-modified biochar
作者: Chuan WuMengQian CuiShengGuo XueWaiChin LiLiu HuangXingXing JiangZiYan Qian
作者单位: 1School of Metallurgy and Environment, Central South University
2Department of Science and Environmental Studies, The Education University of Hong Kong
刊名: Environmental Science and Pollution Research, 2018, Vol.25 (21), pp.20792-20801
来源数据库: Springer Journal
DOI: 10.1007/s11356-018-2268-8
关键词: ArsenicPaddy soilIron-modified biocharAs fractionsSoil remediation
英文摘要: Abstract(#br)Arsenic contamination in paddy soils has aroused global concern due to its threats to food security and human health. Biochar modified with different iron materials was prepared for arsenic (As) immobilization in contaminated soils. Soil incubation experiments were carried to investigate the effects of biochar modified with Fe-oxyhydroxy sulfate (Biochar-FeOS), FeCl 3 (Biochar-FeCl 3 ), and zero-valent iron (Biochar-Fe) on the pH, NaHCO 3 -extractable As concentrations, and the As fractions in soils. The scanning electron microscope and X-ray diffraction analysis demonstrated that iron was successfully loaded onto the surface or embedded into the pores of the biochar. Addition of Biochar-FeOS, Biochar-FeCl 3 , and Biochar-Fe had no significant effects on the soil pH but...
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影响因子:2.618 (2012)

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