title: Aromatic amine contents, component distributions and risk assessment in sludge from 10 textile-dyeing plants.
abstract: 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 (Σ14 AAs) varied from 11 μg g(-1)dw to 82.5 μg g(-1)dw, with a mean value of 25 μg 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.
authors.affiliation: School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China. Electronic address: ningxunan666@126.com.
authors.forename: Xun-An
authors.initials: XA
authors.lastname: Ning
authors.affiliation: School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China.
authors.forename: Jie-Ying
authors.initials: JY
authors.lastname: Liang
authors.affiliation: School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China.
authors.forename: Rui-Jing
authors.initials: RJ
authors.lastname: Li
authors.affiliation: School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China.
authors.forename: Zhen
authors.initials: Z
authors.lastname: Hong
authors.affiliation: School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China.
authors.forename: Yu-Jie
authors.initials: YJ
authors.lastname: Wang
authors.affiliation: School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China.
authors.forename: Ken-Lin
authors.initials: KL
authors.lastname: Chang
authors.affiliation: School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China.
authors.forename: Ya-Ping
authors.initials: YP
authors.lastname: Zhang
authors.affiliation: School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China.
authors.forename: Zuo-Yi
authors.initials: ZY
authors.lastname: Yang
mesh_terms: D000588:Amines / Q000032:analysis*; D002681:China; D004396:Coloring Agents / Q000032:analysis*; D004784:Environmental Monitoring; D018570:Risk Assessment; D012722:Sewage / Q000032:analysis; D013784:Textiles; D014052:Toluidines; D014865:Waste Disposal, Fluid / Q000379:methods*; D062065:Wastewater / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D000588:Amines; D004396:Coloring Agents; D012722:Sewage; D014052:Toluidines; D062065:Wastewater; D014874:Water Pollutants, Chemical; C023622:2-toluidine
keywords: Aromatic amine; Component distributions; Risk assessment; Solid waste; Textile-dyeing sludge