Arsenic Transformation in Swine Wastewater with Low-Arsenic Content during Anaerobic Digestion
作者: Weiwei ZhaiTianyue QinTing GuoMuhammad Imran KhanXianjin TangJianming Xu
作者单位: 1hejiang Provincial Key Laboratory of Agricultural Resources and Environment, Institute of Soil and Water Resources and Environmental Science, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China
2Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Institute of Soil and Water Resources and Environmental Science, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China
3Zhejiang Provincial Key Laboratory of Agr
刊名: Water, 2017, Vol.9 (11)
来源数据库: Directory of Open Access Journals
DOI: 10.3390/w9110826
关键词: Swine wastewaterAnaerobic digestionArsenicTransformationMetabolism genes
原始语种摘要: In this study, the raw wastewater (RW), and effluents from the acidogenic phase (AP) and methanogenic phase (MP) in a swine wastewater treatment plant were collected to investigate the occurrence and transformation of arsenic (As), as well as the abundance of As metabolism genes during the anaerobic digestion (AD) process. The results showed that total concentrations of As generally decreased by 33–71% after AD. Further analysis showed that the As species of the dissolved fractions were present mainly as dimethylarsinic acid (DMA), with arsenite (As(III)) and arsenate (As(V)) as the minor species. Moreover, real-time PCR (qPCR) results showed that As metabolism genes (arsC, arsenate reduction gene; aioA, arsenite oxidation gene and arsM, arsenite methylation gene) were highly abundant,...
全文获取路径: DOAJ  (合作)
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关键词翻译
关键词翻译
  • wastewater 废水
  • Digestion 消化
  • acidogenic 生酸的
  • treatment 处理
  • arsenite 砷华
  • during 在的期间
  • digestion 消化
  • anaerobic 嫌气的
  • oxidation 氧化
  • arsenate 砷酸盐