Levels, composition profiles and risk assessment of polycyclic aromatic hydrocarbons (PAHs) in sludge from ten textile dyeing plants

被引：125
作者：
Ning, Xun-An [1 ]
Lin, Mei-Qing [1 ]
Shen, Ling-Zhi [1 ]
Zhang, Jian-Hao [1 ]
Wang, Jing-Yu [1 ]
Wang, Yu-Jie [1 ]
Yang, Zuo-Yi [1 ]
Liu, Jing-Yong [1 ]
机构：
[1] Guangdong Univ Technol, Sch Environm Sci & Engn, Guangzhou 510006, Guangdong, Peoples R China
来源：
ENVIRONMENTAL RESEARCH | 2014年 / 132卷
基金：
中国国家自然科学基金;
关键词：
Polycyclic aromatic hydrocarbons (PAHs); Textile dyeing sludge; Ecological risk assessment; Carcinogenic risk assessment; Disposal; WATER TREATMENT PLANTS; WASTE-WATER; SEWAGE-SLUDGE; SURFACE SEDIMENTS; HEAVY-METALS; MASS-BALANCE; RIVER DELTA; SOILS; PCDD/F; CHINA;
D O I：
10.1016/j.envres.2014.03.041
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
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 (Sigma(16) PAHs) varied from 1463 +/- 177 ng g(-1) to 16,714 +/- 1,507 ng g(-1) with a mean value of 6386 ng g(-1). 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 Sigma(16) PAHs in textile dyeing sludge was 423 ng g(-1), 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. (C) 2014 Elsevier Inc. All rights reserved.
引用
收藏
页码：112 / 118
页数：7
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