2,4,6-Trinitrotoluene reduction kinetics in aqueous solution using nanoscale zero-valent iron

被引：74

作者：

Zhang, Xin ^{[1
]}

Lin, Yu-Man ^{[1
]}

Chen, Zu-liang ^{[1
]}

机构：

[1] Fujian Normal Univ, Sch Chem & Mat Sci, Fuzhou 350007, Fujian Province, Peoples R China

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2009年 / 165卷 / 1-3期

关键词：

Nanoscale zero-valent iron powder; TNT; Reaction kinetics; NANOPARTICLES; DEGRADATION; PARTICLES; RDX; REMOVAL; TNT; DECHLORINATION; PRETREATMENT; REMEDIATION; OXIDATION;

D O I：

10.1016/j.jhazmat.2008.10.075

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The reduction of 2,4,6-trinitrotoluene (TNT) in aqueous solution using nanoscale zero-valent iron (nZVI) was investigated. The results showed that the pseudo-first order reaction law fit the reduction of TNT. The measured apparent rate constant (K-abs) of TNT on nZVI (0.761 h(-1)) was 7.8-fold than on conventional iron powders (0.0979 h(-1)) at 303 K. The apparent activation energy (E-a) of nZVI reducing TNT was found to be 24.85 KJ/mol, which was decreased by 60% compared to employing conventional iron powders. The apparent rate constant of TNT reduction on nZVI also can be improved by an increase in nZVI concentration, reaction temperature and a decrease of pH. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：923 / 927

页数：5

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