Journal
CHEMOSPHERE
Volume 134, Issue -, Pages 367-373Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.chemosphere.2015.05.015
Keywords
Aromatic amine; Textile-dyeing sludge; Risk assessment; Solid waste; Component distributions
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Funding
- Key Project of Technology Innovation of Department of Education of Guangdong Province [2012CXZD0021]
- National Natural Science Foundation of China [51308132]
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Aromatic amines (AAs), which are components of synthetic dyes, are recalcitrant to the wastewater treatment process and can accumulate in sludge produced by textile-dyeing, which may pose a threat to the environment. A comprehensive investigation of 10 textile-dyeing plants was undertaken in Guangdong Province in China. The contents and component distributions of AAs were evaluated in this study, and a risk assessment was performed. The total concentrations of 14 AAs (Sigma 14 AAs) varied from 11 mu g g(-1) dw to 82.5 mu g g(-1) dw, with a mean value of 25 mu g g(-1) dw. The component distributions of AAs were characterized by monocyclic anilines, of which 2-methoxy-5-methylaniline and 5-nitro-o-toluidine were the most dominant components. The risk quotient (RQ) value was used to numerically evaluate the ecological risk of 14 AAs in the environment. The result showed that the 14 AAs contents in textile-dyeing sludge may pose a high risk to the soil ecosystem after being discarded on soil or in a landfill. (C) 2015 Elsevier Ltd. All rights reserved.
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