A nationwide survey and emission estimates of cyclic and linear siloxanes through sludge from wastewater treatment plants in Korea SCIE SCOPUS

Cited 34 time in WEB OF SCIENCE Cited 39 time in Scopus
Title
A nationwide survey and emission estimates of cyclic and linear siloxanes through sludge from wastewater treatment plants in Korea
Author(s)
Lee, Sunggyu; Moon, Hyo-Bang; Song, Geum-Ju; Ra, Kongtae; Lee, Won-Chan; Kannan, Kurunthachalam
KIOST Author(s)
Ra, Kongtae(나공태)
Publication Year
2014-11-01
Abstract
Siloxanes are widely used in various industrial applications as well as in personal care products. Despite their widespread use and potential toxic effects, few studies have reported on the occurrence of siloxanes in the environment. In this study, we determined the concentrations of 5 cyclic and 15 linear siloxanes in sludge collected from 40 representative wastewater treatment plants (WWTPs) in Korea. Total concentrations of 20 siloxanes (Sigma siloxane) in sludge ranged from 0.05 to 142 (mean: 45.7) mu g/g dry weight, similar to the concentrations reported in European countries but higher than those reported in China. The concentrations of siloxanes in sludge from domestic WWTPs were significantly (p < 0.01) higher than those from industrial WWTPs, indicating higher consumption of siloxanes in various personal care products (e.g. shampoos and conditioners). The major siloxane compounds found in sludge were decamethylcyclopentasilane (D5), docosamethyldecasiloxane (L10) and dodecamethylcyclohexasilane (D6), which collectively accounted for, on average, 62% of the Sigma siloxane concentrations. Non-parametric multidimensional scaling ordination of the profiles of siloxanes indicated the existence of different usage patterns of siloxanes between industrial and household activities. Multiple linear regression analysis of siloxane concentrations and WWTP characteristics suggested that D5, D6 and linear siloxane concentrations in sludge were positively correlated with population served by a WWTP. Environmental emission fluxes of cyclic and linear siloxanes through sludge disposal in Korea were 14,800 and 18,500 kg/year, respectively. This is the first report describing occurrence and environmental emission of siloxanes through sludge in Korea. (C) 2014 Elsevier B.V. All rights reserved.
ISSN
0048-9697
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/2675
DOI
10.1016/j.scitotenv.2014.07.083
Bibliographic Citation
SCIENCE OF THE TOTAL ENVIRONMENT, v.497, pp.106 - 112, 2014
Publisher
ELSEVIER SCIENCE BV
Subject
PERSONAL CARE PRODUCTS; VOLATILE METHYLSILOXANES; SYNTHETIC MUSKS; SEWAGE-SLUDGE; LAKE SHIHWA; CHINA; SEDIMENT; FATE; AIR; PHARMACEUTICALS
Keywords
Wastewater; Decamethylcyclopentasilane; Dodecamethylcyclohexasilane; Emission flux; Personal care products; WWTP
Type
Article
Language
English
Document Type
Article
Publisher
ELSEVIER SCIENCE BV
Related Researcher
Research Interests

Marine chemistry,Isotope Biogeochemistry,Environmental Forensic,해양화학,동위원소 생지화학,환경법의학

Files in This Item:
There are no files associated with this item.

qrcode

Items in ScienceWatch@KIOST are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse