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Model-based assessment of chromate reduction and nitrate effect in a methane-based membrane biofilm reactor.

ABSTRACT: Chromate contamination can pose a high risk to both the environment and public health. Previous studies have shown that CH4-based membrane biofilm reactor (MBfR) is a promising method for chromate removal. In this study, we developed a multispecies biofilm model to study chromate reduction and its interaction with nitrate reduction in a CH4-based MBfR. The model-simulated results were consistent with the experimental data reported in the literature. The model showed that the presence of nitrate in the influent promoted the growth of heterotrophs, while suppressing methanotrophs and chromate reducers. Moreover, it indicated that a biofilm thickness of 150??m and an influent dissolved oxygen concentration of 0.5?mg O2/L could improve the reactor performance by increasing the chromate removal efficiency under the simulated conditions.

SUBMITTER: Wang Z

PROVIDER: S-EPMC6831904 | biostudies-literature | 2019 Dec

REPOSITORIES: biostudies-literature

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Model-based assessment of chromate reduction and nitrate effect in a methane-based membrane biofilm reactor.

Wang Zhen Z Chen Xue-Ming XM Ni Bing-Jie BJ Tang You-Neng YN Zhao He-Ping HP

Water research X 20191015

Chromate contamination can pose a high risk to both the environment and public health. Previous studies have shown that CH<sub>4</sub>-based membrane biofilm reactor (MBfR) is a promising method for chromate removal. In this study, we developed a multispecies biofilm model to study chromate reduction and its interaction with nitrate reduction in a CH<sub>4</sub>-based MBfR. The model-simulated results were consistent with the experimental data reported in the literature. The model showed that th ...[more]

PMID: 31709419

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