Sulfur transformation in sulfur autotrophic denitrification using thiosulfate as electron donor

Chunzhen Fan, Weili Zhou, Shengbing He, Jungchen Huang

研究成果: Article同行評審

9 引文 斯高帕斯(Scopus)

摘要

Thiosulfate is frequently used as an energy source and electron donor in autotrophic denitrification (AD) for removing nitrate from wastewater. However, transforming pathways of S2O32− in this process is unclear. Herein, the aim of this study is to explore possible transforming pathways of sulfur compounds in thiosulfate-based AD process. After measuring the variation of NO3, NO2, and various sulfur compounds such as S0, SO42−, S2O32−, acid volatile sulfide (AVS), and S2− in the presence and absence of S2O32−, the variation process of S2O32− and the contribution of various sulfur compounds were analyzed. The results indicated that S0, AVS, and S2− were the intermediate products when S2O32− was applied as an electron donor. All S2O32−, S0, AVS, and S2− could act as electron donors in the nitrate removal process with the final products of SO42−. The utilization priority of these four sulfur sources was presumed in the following order: S2− > S2O32− > AVS ≈ S0. Furthermore, sulfur transformation and balance in nitrate removal process was also investigated. This suggests the transforming pathways of sulfur compounds in denitrification process. Nitrogen removal and sulfur conversion process are dependent on the presence of microorganisms in the sludge.

原文English
文章編號115708
期刊Environmental Pollution
268
DOIs
出版狀態Published - 2021 1月 1

All Science Journal Classification (ASJC) codes

  • 毒理學
  • 污染
  • 健康、毒理學和誘變

指紋

深入研究「Sulfur transformation in sulfur autotrophic denitrification using thiosulfate as electron donor」主題。共同形成了獨特的指紋。

引用此