Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6353060 | Environmental Research | 2014 | 7 Pages |
Abstract
As components of synthetic dyes, polycyclic aromatic hydrocarbons (PAHs) are present as contaminants in textile dyeing sludge due to the recalcitrance in wastewater treatment process, which may pose a threat to environment in the process of sludge disposal. In order to evaluate PAHs in textile dyeing sludge, comprehensive investigation comprising 10 textile dyeing plants was undertaken. Levels, composition profiles and risk assessment of 16 EPA-priority PAHs were analyzed in this study. The total concentrations of 16 PAHs (â16 PAHs) varied from 1463±177 ng gâ1 to 16,714±1,507 ng gâ1 with a mean value of 6386 ng gâ1. The composition profiles of PAHs were characterized by 3- and 4-ring PAHs, among which phenanthrene, anthracene and fluoranthene were the most dominant components. The mean benzo[a]pyrene equivalent (BaPeq) concentration of â16 PAHs in textile dyeing sludge was 423 ng gâ1, which was 2-3 times higher than concentrations reported for urban soil. According to ecological risk assessment, the levels of PAHs in the textile dyeing sludge may cause a significant risk to soil ecosystem after landfill or dumping on soil.
Keywords
Related Topics
Life Sciences
Environmental Science
Health, Toxicology and Mutagenesis
Authors
Xun-An Ning, Mei-Qing Lin, Ling-Zhi Shen, Jian-Hao Zhang, Jing-Yu Wang, Yu-Jie Wang, Zuo-Yi Yang, Jing-Yong Liu,