铬在土壤中环境行为及修复研究进展
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摘要
重金属铬(Cr)对人体健康造成极大危害,Cr污染土壤修复技术研究对于改善土壤及地下水土环境有重大意义。本文介绍重金属Cr在土壤中的环境行为及其影响因素,揭示Cr在土壤中的环境行为主要包括吸附、迁移、转氧化还原和沉淀溶解等。影响重金属Cr在土壤中环境行为的因素主要为土壤pH值、土壤氧化还原电位(Eh值)、土壤类型及土壤有机质。结合近期研究热点,探究胶体与Cr在协同作用下的迁移机制。在此分析基础上,总结了国内外已有Cr污染土壤的最新修复研究进展并分析其适用性。目前Cr污染土壤修复技术日益丰富,修复材料趋于对环境友好且多样化,但由于大多数修复技术研究停留于试验阶段,对于实际场地中土壤环境的复杂性和多变性,Cr污染土壤修复技术遴选及其应用还需进一步探讨。
引文
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[13]骆和东,吴雨然,姜艳芳.我国食品中铬污染现状及健康风险[J].中国食品卫生杂志,2015,27(6):717-721.
[14]刘峥颢,赵志磊,夏立娅,等.市场中食品添加剂明胶及添加明胶的食品中铬含量本底调查[J].食品科技,2010(2):224-227.
[15]王晓波,李建国,刘冬英,等.广州市市售大米中铬污染水平及健康风险评价[J].中国食品卫生杂志,2015,27(1):75-78.
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[20]易秀,李五福.黄土性土壤对Cr(Ⅵ)的吸附还原动力学研究[J].干旱区资源与环境,2005,19(3):141-144.
[21]张蕊.六价铬在土壤中迁移转化影响因素研究及风险评价[D].长春:吉林大学,2013.
[22]戴宇,杨重法,郑袁明.土壤-植物系统中铬的环境行为及其毒性评价[J].环境科学,2009,30(11):3432-3440.
[23]陈英旭,骆永明,朱永官,等.土壤中铬的化学行为研究Ⅴ.土壤对Cr(Ⅲ)吸附和沉淀作用的影响因素[J].土壤学报,1994,31(1):77-85.
[24]王成文,许模,张俊杰,等.土壤pH和Eh对重金属铬(Ⅵ)纵向迁移及转化的影响[J].环境工程学报,2016,10(10):6035-6041.
[25]胡婧琳,林雅洁,朱钢.地下环境中铬迁移转化机制及修复技术综述[J].环境工程,2016,34(增刊1):1053-1056.
[26]于卫花,张焕祯,王智丽,等.土壤吸附铬的特性及影响因素研究进展[J].环境保护科学,2013,39(2):38-41,46.
[27]朱月珍.土壤中六价铬的吸附与还原[J].环境化学,1982(5):359-364.
[28]王亚军,朱琨,王进喜.腐殖酸对Cr在污染土壤中吸附形态影响的研究[J].腐植酸,2007(5):21-26.
[29]张文静,周晶晶,刘丹,等.胶体在地下水中的环境行为特征及其研究方法探讨[J].水科学进展,2016,27(4):629-638.
[30]Xiong T,Yuan X Z,Wang H,et al.Implication of graphene oxide in Cd-contaminated soil:a case study of bacterial communities[J].Journal of Environmental Management,2018,205:99-106.
[31]McBride,Murray B.Cadmium uptake by crops estimated from soil total Cd and pH[J].Soil Science,2002,167(1):62-67.
[32]周晶晶.人工回灌条件下地下水中天然胶体与Fe的相互作用机制及其模拟预测[D].长春:吉林大学,2017.
[33]王燕,李贤庆,宋志宏,等.土壤重金属污染及生物修复研究进展[J].安全与环境学报,2009,9(3):60-65.
[34]刘涛,祝方,赵晋宇,等.降雨条件下纳米零价铁镍对污染土壤中六价铬迁移的影响[J].环境化学,2017,36(4):812-820.
[35]杨悦锁,王园园,宋晓明,等.土壤和地下水环境中胶体与污染物共迁移研究进展[J].化工学报,2017,68(1):23-36.
[36]He X,Zhong P,Qiu X H.Remediation of hexavalent chromium in contaminated soil by Fe(Ⅱ)-Al layered double hydroxide[J].Chemosphere,2018,210:1157-1166.
[37]Zhao L,Ding Z L,Sima J,et al.Development of phosphate rock integrated with iron amendment for simultaneous immobilization of Zn and Cr(Ⅵ) in an electroplating contaminated soil[J].Chemosphere,2017,182:15-21.
[38]李喜林,张佳雯,陈冬琴,等.水泥固化铬污染土强度及浸出试验研究[J].硅酸盐通报,2017,36(3):979-983,990.
[39]温俊国,朱宇恩,时伟宇,等.三种修复剂对铬污染土壤的修复效果[J].环境工程,2017,35(9):181-185.
[40]Ballesteros S,Rincón J M,Rincón-Mora B,et al.Vitrification of urban soil contamination by hexavalent chromium[J].Journal of Geochemical Exploration,2017,174:132-139.
[41]Xue W,Huang D L,Zeng G M,et al.Performance and toxicity assessment of nanoscale zero valent iron particles in the remediation of contaminated soil:A review[J].Chemosphere,2018,210:1145-1156.
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