Degradation of 2,4,6-trinitrotoluene (TNT) from explosive wastewater using nanoscale zero-valent iron

被引：93
作者：
Zhang, Xin [1 ]
Lin, Yu-man [1 ]
Shan, Xaio-quan [2 ]
Chen, Zu-liang [1 ]
机构：
[1] Fujian Normal Univ, Sch Chem & Mat Sci, Fuzhou 350007, Fujian Province, Peoples R China
[2] Chinese Acad Sci, Ecoenvironm Sci Res Ctr, Beijing 100085, Peoples R China
来源：
CHEMICAL ENGINEERING JOURNAL | 2010年 / 158卷 / 03期
关键词：
Nanoscale zero-valent iron; 2,4,6-Trinitrotoluene (TNT); Degradation; PARTICLES; REMOVAL; DECHLORINATION; NANOPARTICLES; GROUNDWATER; TCE; REMEDIATION; PATHWAYS; RDX;
D O I：
10.1016/j.cej.2010.01.054
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
The degradation of 2,4,6-trinitrotoluene (TNT) in wastewater using nanoscale zero-valent iron (nZVI) was investigated. The results showed that >99% TNT was degraded when the initial TNT concentration was 80 mg L-1 after degradation for 3 h by 5 g L-1 of nZVI at pH 4, 40 degrees C using a rotary oscillation incubator operating at 200 rpm. The Langmuir-Hinshelwood kinetics model fit the kinetics of TNT degradation by nZVI well. Fourier transform infrared (FT-IR) and ultraviolet-visible spectrophotometry showed that TNT was adsorbed on the surface of nZVI, and this reduced TNT in aqueous solution. X-ray diffraction (XRD) demonstrated that the surface of nZVI changed during the degradation of TNT. (C) 2010 Elsevier B.V. All rights reserved.
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页码：566 / 570
页数：5
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