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首页> 外文期刊>Bulletin of Environmental Contamination and Toxicology >Removal of Cr(VI) by nanoscale zero-valent iron (nZVI) from soil contaminated with tannery wastes.
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Removal of Cr(VI) by nanoscale zero-valent iron (nZVI) from soil contaminated with tannery wastes.

机译：纳米零价铁（nZVI）从制革废料污染的土壤中去除Cr（VI）。

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摘要

The illegal disposal of tannery wastes at Rania, Kanpur has resulted in accumulation of hexavalent chromium [Cr(VI)], a toxic heavy metal in soil posing risk to human health and environment. 27 soil samples were collected at various depths from Rania for the assessment of Cr(VI) level in soil. Out of 27 samples, five samples had shown significant level of Cr(VI) with an average concentration of 15.84 mg Kg-1. Varied doses of nanoscale zero-valent iron (nZVI) were applied on Cr(VI) containing soil samples for remediation of Cr(VI). Results showed that 0.10 g L-1 nZVI completely reduces Cr(VI) within 120 min following pseudo first order kinetics. Further, to test the efficacy of nZVI in field, soil windrow experiments were performed at the contaminated site. nZVI showed significant Cr(VI) reduction at field also, indicating it an effective tool for managing sites contaminated with Cr(VI).
机译：制革厂废物在坎普尔拉尼亚的非法处置导致六价铬[Cr（VI）]的积累，六价铬是一种有毒的重金属，在土壤中对人类健康和环境构成风险。从拉尼亚（Rania）的不同深度收集了27个土壤样品，以评估土壤中的Cr（VI）水平。在27个样品中，五个样品显示出显着的Cr（VI）水平，平均浓度为15.84 mg Kg -1 。将各种剂量的纳米级零价铁（nZVI）应用于含Cr（VI）的土壤样品中，以修复Cr（VI）。结果表明，0.10 g L -1 nZVI遵循拟一级动力学，在120分钟内完全还原了Cr（VI）。此外，为了测试nZVI在田间的功效，在受污染的地点进行了土壤堆放实验。 nZVI在野外也显示出显着的Cr（VI）减少，表明它是管理受Cr（VI）污染的场所的有效工具。

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