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

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 °C using a rotary oscill...

Full description

Saved in:
Bibliographic Details
Published in:Chemical engineering journal (Lausanne, Switzerland : 1996) Switzerland : 1996), 2010-04, Vol.158 (3), p.566-570
Main Authors: Zhang, Xin, Lin, Yu-man, Shan, Xaio-quan, Chen, Zu-liang
Format: Article
Language:English
Subjects:
2,4,6-Trinitrotoluene (TNT)
Applied sciences
Chemical engineering
Degradation
Exact sciences and technology
General purification processes
Infrared
Iron
Nanocomposites
Nanomaterials
Nanoscale zero-valent iron
Nanostructure
Pollution
TNT
Waste water
Wastewaters
Water treatment and pollution
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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 °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.
ISSN:1385-8947
1873-3212
DOI:10.1016/j.cej.2010.01.054