Bioreduction of para-chloronitrobenzene in drinking water using a continuous stirred hydrogen-based hollow fiber membrane biofilm reactor

Xia, Siqing; Li, Haixiang; Zhang, Zhiqiang; Zhang, Yanhao; Yang, Xin; Jia, Renyong; Xie, Kang; Xu, Xiaotian

doi:10.1016/j.jhazmat.2011.05.060

Cited by 54 publications

(21 citation statements)

References 34 publications

(40 reference statements)

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“…perchlorate, chlorate, chlorite, bromate, chromate, selenate, selenite, arsenate) and organic (e.g. DCM, DBCP, TCE, p-CNB, 2-CP) contaminants from both drinking water and wastewater using nitrate, sulfate and/or oxygen as primary electron acceptors [70][71][72][73][74][75][76][77]. In order to produce potable-grade water, a post-filtration phase is often necessary to remove escaping biomass from the effluent.…”

Section: Potable Water Treatmentmentioning

confidence: 99%

Chemolithotrophic denitrification in biofilm reactors

Capua

Papirio

Lens

et al. 2015

Chemical Engineering Journal

170

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Section: Potable Water Treatmentmentioning

confidence: 99%

Chemolithotrophic denitrification in biofilm reactors

Capua

Papirio

Lens

et al. 2015

Chemical Engineering Journal

170

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“…For example, NO À 3 -N, SO 2À 4 and BrO À 3 can be reduced to N 2 ,S 2À , and Br À ; while reduction of CrO 2À 4 can lead to insoluble Cr(OH) 3 which can be removed by filtration (Nerenberg and Rittmann, 2004). Anaerobic microbial reduction is an important transformation pathway for p-CNB degradation, because the microbial attack is easily carried out in the presence of an electron donor (Xia et al, 2011;Li et al, 2014). For biological reduction, a microbiologically available electron donor must be added.…”

Section: Introductionmentioning

confidence: 99%

Simultaneous Bioreduction of Multiple Oxidized Contaminants Using a Membrane Biofilm Reactor

Lin²,

Xu³

et al. 2017

Water Environment Research

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This study tests a hydrogen-based membrane biofilm reactor (MBfR) to investigate simultaneous bioreduction of selected oxidized contaminants, including nitrate (-N), sulfate (), bromate (), chromate (Cr(VI)) and para-chloronitrobenzene (p-CNB). The experiments demonstrate that MBfR can achieve high performance for contaminants bioreduction to harmless or immobile forms in 240 days, with a maximum reduction fluxes of 0.901 g -N/m2·d, 1.573 g /m2·d, 0.009 g /m2·d, 0.022 g Cr(VI)/m2·d, and 0.043 g p-CNB/m2·d. Increasing H2 pressure and decreasing influent surface loading enhanced removal efficiency of the reactor. Flux analysis indicates that nitrate and sulfate reductions competed more strongly than , Cr(VI) and p-CNB reduction. The average H2 utilization rate, H2 flux, and H2 utilization efficiency of the reactor were 0.026 to 0.052 mg H2/cm3·d, 0.024 to 0.046 mg H2/cm2·d, and 97.5% to 99.3% (nearly 100%). Results show the hydrogen-based MBfR may be suitable for removing multiple oxidized contaminants in drinking water or groundwater.

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“…However, pCNB is toxic and hazardous to human and animals, which can cause methemoglobinemia and exhibits mutagenic and carcinogenic potential [5]. It has been reported that pCNB is non-biodegradation under aerobic conditions due to the electron-withdrawing properties of nitro and chlorine groups on the benzene ring [6]. Therefore, it raises a need to develop effective approaches to remove pCNB from aqueous environment.…”

Section: Introductionmentioning

confidence: 99%