Occurrence of PBDEs and alternative halogenated flame retardants in sewage sludge from the industrial city of Guangzhou, China

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

22 Scopus Citations
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Author(s)

  • Qihang Wu
  • Haiyan Li
  • Shejun Chen
  • Bixian Mai
  • Huosheng Li
  • Zhineng Liu
  • Mingjun Deng
  • Haozhi Zhang
  • Xiaodong Hu
  • Xinhua Geng
  • Yongheng Chen

Detail(s)

Original languageEnglish
Pages (from-to)63-71
Journal / PublicationEnvironmental Pollution
Volume220
Publication statusPublished - 1 Jan 2017

Abstract

This study investigated the prevalence and abundance of halogenated flame retardants (HFRs) in sludge samples from 5 sewage treatment plants in Guangzhou, China. Detection of 18 polybrominated diphenyl ethers (PBDEs), 9 alternative HFRs including Dechlorane Plus (DP), brominated alkylbenzenes, and polybrominated biphenyls, and 2 related degradation products was conducted. Decabromodiphenyl ether (BDE 209) and decabromodiphenyl ethane (DBDPE) were the dominant HFRs, with concentrations ranging from 200 to 2150 ng/g and 680–27,400 ng/g, respectively. The DBDPE detected was the highest level reported so far, exceeding those previously reported by 10–100 times. PBDEs were surpassed as the dominant HFRs in sewage sludge, with mean DBDPE/BDE 209 ratio exceeding 2 in all samples. The review of earlier surveys reveals that DBDPE level was surging while BDE 209 was declining. Annual emissions of BDE 209, DP, and DBDPE were estimated to be 227.9, 10.5, and 979.3 kg/yr, respectively. Although ecological risks assessment suggested low risks for the examined sludge, the key environmental properties and transformation pathways of alternative HFRs remain largely unknown. These findings prompt for further investigations on alternative HFR and sustainable management practices for HFR-laden biosolids. The HFR emission pattern revealed in this study is likely representative of other similarly industrialized regions in the post-PBDE era.

Research Area(s)

  • Biosolids, DBDPE, Ecological risk assessment, Halogenated flame retardants, Sewage sludge

Citation Format(s)

Occurrence of PBDEs and alternative halogenated flame retardants in sewage sludge from the industrial city of Guangzhou, China. / Wu, Qihang; Li, Haiyan; Kuo, Dave T.F.; Chen, Shejun; Mai, Bixian; Li, Huosheng; Liu, Zhineng; Deng, Mingjun; Zhang, Haozhi; Hu, Xiaodong; Geng, Xinhua; Chen, Yongheng.

In: Environmental Pollution, Vol. 220, 01.01.2017, p. 63-71.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review