Removing pentachlorophenol from water using a nanoscale zero-valent iron/H2O2 system

被引：68

作者：

Cheng, Rong ^{[1
]}

Cheng, Can ^{[1
]}

Liu, Guo-hua ^{[1
]}

Zheng, Xiang ^{[1
]}

Li, Guanqing ^{[1
]}

Li, Jie ^{[1
]}

机构：

[1] Renmin Univ China, Sch Environm & Nat Resources, Beijing 100872, Peoples R China

来源：

CHEMOSPHERE | 2015年 / 141卷

关键词：

Zero-valent iron nanoparticles; Fenton reaction; Pentachlorophenol; Dechlorination; Magnetite; Hydrogen peroxide; PERMEABLE REACTIVE BARRIER; WASTE-WATER; NITRATE REDUCTION; IRON; DEGRADATION; FENTON; GROUNDWATER; OXIDATION; FE-0; SOIL;

D O I：

10.1016/j.chemosphere.2015.06.087

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Nanoscale zero-valent iron (nZVI) is an environmentally benign material that has been widely used as a reducing agent to treat environmental pollutants. In this study, nZVI was used as a heterogeneous Fenton catalyst in an nZVI/H2O2 system to remove pentachlorophenol (PCP) from water. The PCP degradation process in the nZVI/H2O2 system was completed within 1 h. The relative Cl- concentration increased throughout the test period (6 h), indicating that the performance of the oxidative system in terms of dechlorination was excellent. The initial H2O2 concentration significantly influenced the PCP removal rate, and nZVI performed better than commercial zero-valent iron as a catalyst. Moreover, magnetite (Fe3O4), which was the main product of the corrosion of nZVI, was found to perform well as an adsorbent and catalyst, so it allowed the nZVI to be effectively reused. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：138 / 143

页数：6

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