Transport and fate modeling of nitrobenzene in groundwater after the Songhua River pollution accident

Journal of Environmental Management
Wenjing ZhangXiaosi Su

Abstract

In 2005 a pollution accident occurred in the Songhua River, which is geographically located next to groundwater supply plants. This caused public concern about the transport and fate of nitrobenzene (NB) in the groundwater. This paper discusses the mechanisms and effects of the transport and fate of NB in groundwater based on pilot scale experiments conducted in the laboratory, including a simulation experiment, bench-scale batch tests and a one-dimensional numerical model. Parallel batch tests showed that the adsorption of NB to the clay and sand followed the Langmuir-type isotherm, and clay had a greater NB adsorption capacity than sand. NB biodegradation in different conditions was well fitted by the Monod equation and the q(max) values varied from 0.018 to 0.046 h(-1). Results indicated that NB's biodegradation was not affected by the initial NB concentration. Numerical modeling results indicated a good match between computed and observed data, and in the prediction model NB entered the groundwater after the pollution accident. However, the highest concentration of NB was much lower than the allowable limit set by the national standard (0.017 mg/L).

References

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Citations

Mar 22, 2013·Environmental Geochemistry and Health·S V M MaharajD N Szilagyi
Oct 5, 2015·Journal of Environmental Management·Caihong TangJie Sun
Aug 22, 2013·The Science of the Total Environment·Mi-Jung Bae, Young-Seuk Park
Jul 13, 2016·Environmental Science and Pollution Research International·Jianhua QuHong You
Sep 7, 2016·Scientific Reports·Renee J SmithJames G Mitchell
Jul 20, 2019·International Journal of Environmental Research and Public Health·Zhaofang ZhangJin Huang

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