The present study was conducted to compare the behavior of wheat straw, sawdust and biodegradable plastic (BP) as potential carbon sources for denitrification in groundwater remediation. The results showed that a greater amount of nitrogen compounds were released from wheat straw and sawdust than from BP in leaching experiments. In batch experiments, BP showed higher nitrate removal efficiency and longer service life than wheat straw and sawdust, which illustrated that BP is the most appropriate carbon source for stimulation of denitrification activity. In column experiments, BP was able to support complete denitrification at influent nitrate concentrations of 50, 60, 70, 80, and 90 mg NO3−-N/L, showing corresponding denitrification rates of 0.12, 0.14, 0.17, 0.19, and 0.22 mg NO3−-N.L−1.d−1.g−1, respectively. These findings indicate that BP is applicable for use as a carbon source for nitrate-polluted groundwater remediation.
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Research Article|
May 01 2012
Behavior of solid carbon sources for biological denitrification in groundwater remediation
Jianmei Zhang;
Jianmei Zhang
1School of Water Resources and Environment, China University of Geosciences (Beijing), Beijing 100083, China
2Department of Geochemistry, Key Laboratory of Exploration Technologies for Oil and Gas Resources, Ministry of Education, Yangtze University, Jingzhou 434023, China
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Chuanping Feng;
1School of Water Resources and Environment, China University of Geosciences (Beijing), Beijing 100083, China
E-mail: fengchuanping@gmail.com
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Siqi Hong;
Siqi Hong
1School of Water Resources and Environment, China University of Geosciences (Beijing), Beijing 100083, China
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Huiling Hao;
Huiling Hao
1School of Water Resources and Environment, China University of Geosciences (Beijing), Beijing 100083, China
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Yingnan Yang
Yingnan Yang
3Graduate School of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8572, Japan
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Water Sci Technol (2012) 65 (9): 1696–1704.
Article history
Received:
September 04 2011
Accepted:
January 09 2012
Citation
Jianmei Zhang, Chuanping Feng, Siqi Hong, Huiling Hao, Yingnan Yang; Behavior of solid carbon sources for biological denitrification in groundwater remediation. Water Sci Technol 1 May 2012; 65 (9): 1696–1704. doi: https://doi.org/10.2166/wst.2012.070
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