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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 295-298Microbial Perchlorate Reduction in Groundwater...

Microbial Perchlorate Reduction in Groundwater with Different Electron Donors

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Abstract:

Effects of different electron donors (acetate and hydrogen), acetate and perchlorate concentrations on microbial perchlorate reduction in groundwater were studied. The results showed that acetate and hydrogen addition as an electron donor can significantly improve perchlorate removal efficiency while a longer period was observed for hydrogen (15 d) than for acetate (8 d). The optical ratio of electron donor (acetate)-to-electron acceptor (perchlorate) was approximately 1.65 mg COD mg perchlorate-1. The highest specific reduction rate of perchlorate was achieved at the acetate-to-perchlorate ratio of 3.80 mg COD mg perchlorate-1. The perchlorate reduction rates corresponded well to the theoretical values calculated by the Monod equation and the parameters of Ks and Vm were determined to be 15.6 mg L-1 and 0.26 d-1, respectively.

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Periodical:

Applied Mechanics and Materials (Volumes 295-298)

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1402-1407

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.295-298.1402

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Online since:

February 2013

Authors:

Rui Wang*, Ming Chen, Jia Wen Zhang, Fei Liu, Hong Han Chen

Keywords:

Degradation Kinetics, Electron Donor, Ground Water, Microbial Reduction, Perhclorate

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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