Mitigation of mercury accumulation in rice using rice hull-derived biochar as soil amendment: A field investigation | |
Ying Xing; Jianxu Wang; Sabry M. Shaheen; Xinbin Feng; Zhuo Chen; Hua Zhang; Jörg Rinklebe | |
刊名 | Journal of Hazardous Materials |
2020 | |
卷号 | 388页码:1-10 |
关键词 | Rice Hg Accumulation biochar Application sulfur Fractionation risk Management field Trial |
英文摘要 | Effect of application of 24 t ha−1 and 72 t ha-1 rice hull-derived biochar (RHB) on total Hg (THg) and methylHg (MeHg) immobilization and their accumulations by rice plants were studied in a field experiment (Wanshan Hg mine, China). The addition of two doses of RHB significantly increased the biomass of rice plants, and decreased the MeHg concentration in the pore water, as compared to the control. The RHB promoted the partitioning of pore water MeHg to the soil solid phase throughout rice growing season, and pore water THg partitioning only at rice filling stage. Mercury methylation potential was weakly affected by the RHB addition to the soil. Mercury might be immobilized through binding of thiols (e.g., cysteine) presented in the RHB or in the soil induced by RHB addition. Biochar addition decreased MeHg and THg contents in the tissues of rice plants, particularly in the polished rice. We attributed the reduction of THg in the rice to the bio-dilution effect, and of MeHg content in the rice to the decreased MeHg availability in the soil by RHB addition. Results suggest that RHB might be suitable for managing Hg transfer in soil-rice plants at Hg contaminated mining regions in China and beyond. |
语种 | 英语 |
内容类型 | 期刊论文 |
源URL | [http://ir.gyig.ac.cn/handle/42920512-1/10530] |
专题 | 地球化学研究所_环境地球化学国家重点实验室 |
作者单位 | 1.University of Sejong, Department of Environment, Energy and Geoinformatics, 98 Gunja-Dong, Guangjin-Gu, Seoul, South Korea 2.CAS Center for Excellence in Quaternary Science and Global Change, Xi'an, 710061, PR China 3.University of Wuppertal, School of Architecture and Civil Engineering, Institute of Foundation Engineering, Water- and Waste-Management, Laboratory of Soil- and Groundwater-Management, Pauluskirchstraße 7, 42285, Wuppertal, Germany 4.State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, 550081, PR China 5.School of Chemistry and Materials Science, Guizhou Normal University, Guiyang, 550002, PR China 6.King Abdulaziz University, Faculty of Meteorology, Environment, and Arid Land Agriculture, Department of Arid Land Agriculture, 21589, Jeddah, Saudi Arabia 7.University of Kafrelsheikh, Faculty of Agriculture, Department of Soil and Water Sciences, 33516, Kafr El-Sheikh, Egypt |
推荐引用方式 GB/T 7714 | Ying Xing,Jianxu Wang,Sabry M. Shaheen,et al. Mitigation of mercury accumulation in rice using rice hull-derived biochar as soil amendment: A field investigation[J]. Journal of Hazardous Materials,2020,388:1-10. |
APA | Ying Xing.,Jianxu Wang.,Sabry M. Shaheen.,Xinbin Feng.,Zhuo Chen.,...&Jörg Rinklebe.(2020).Mitigation of mercury accumulation in rice using rice hull-derived biochar as soil amendment: A field investigation.Journal of Hazardous Materials,388,1-10. |
MLA | Ying Xing,et al."Mitigation of mercury accumulation in rice using rice hull-derived biochar as soil amendment: A field investigation".Journal of Hazardous Materials 388(2020):1-10. |
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