Literature DB >> 25459828

Enhanced removal of nitrate using starch/PCL blends as solid carbon source in a constructed wetland.

Zhiqiang Shen1, Yuexi Zhou2, Jia Liu3, Yu Xiao4, Rong Cao5, Fuping Wu6.   

Abstract

Cornstarch/polycaprolactone (SPCL) blends were prepared and used as external carbon source for biological denitrification in a constructed wetland. The denitrification performances, components of dissolved organic matter (DOM) and microbial diversity were investigated. The results showed that nitrate was removed mainly in the layer filled with SPCL, and the average denitrification rate was 0.069kg/m(3)d (nitrate removal efficiency was 98.23%). The major component of DOM was polysaccharides which mainly consisted of reducing sugar. Besides, the concentrations of polysaccharides and reducing sugar decreased along the height of the constructed wetland. Therefore, the dissolved organic carbon (DOC) of effluent decreased to 6.54mg/L. Denitrifying bacteria Bacillus (24.25%) and Thauera (9.36%) were the most abundant genera in the biofilm attached on the surface of SPCL.
Copyright © 2014 Elsevier Ltd. All rights reserved.

Entities:  

Keywords:  Constructed wetland; Denitrification; Microbial community; Solid carbon source; Starch

Mesh：

Substances：

Year:  2014        PMID： 25459828     DOI： 10.1016/j.biortech.2014.10.006

Source DB:  PubMed          Journal:  Bioresour Technol        ISSN： 0960-8524            Impact factor:   9.642


  8 in total

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Journal:  Environ Sci Pollut Res Int       Date:  2015-03-20       Impact factor: 4.223

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6.  Treatment of artificial wastewater containing two azo textile dyes by vertical-flow constructed wetlands.

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Journal:  Environ Sci Pollut Res Int       Date:  2017-12-21       Impact factor: 4.223

7.  Effects of Temperature on the Characteristics of Nitrogen Removal and Microbial Community in Post Solid-Phase Denitrification Biofilter Process.

Authors:  Qian Zhang; Xue Chen; Wandong Luo; Heng Wu; Xiangyang Liu; Wang Chen; Jianhong Tang; Lijie Zhang
Journal:  Int J Environ Res Public Health       Date:  2019-11-13       Impact factor: 3.390

8.  Myriophyllum aquaticum Constructed Wetland Effectively Removes Nitrogen in Swine Wastewater.

Authors:  Haishu Sun; Feng Liu; Shengjun Xu; Shanghua Wu; Guoqiang Zhuang; Ye Deng; Jinshui Wu; Xuliang Zhuang
Journal:  Front Microbiol       Date:  2017-10-06       Impact factor: 5.640
  8 in total

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