Effect of sulfate on anaerobic reduction of nitrobenzene with acetate or propionate as an electron donor

Huang, Jingang; Wen, Yue; Ding, Ning; Xü, Yao; Zhou, Qi

doi:10.1016/j.watres.2012.05.037

Cited by 48 publications

(18 citation statements)

References 42 publications

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“…Due to the accumulation of acetate acid, ORP and pH values in anaerobic system coupled with hematite and magnetite were lower than those in the biotic control system, which would be beneficial for both reductive dechlorination and methanogenesis (Huang et al, 2012; Murali et al, 2013). Favorable environment for some specific microbial species, such as methanogens and acetogens, could be created by increasing acetic acid production and lowering the ORP.…”

Section: Resultsmentioning

confidence: 99%

“…On the contrary, the ORP values in the anaerobic system coupled by ferrihydrite was always higher than those in the biotic control system. Lower ORP value means a better reductive environment, which could exert a positive effect on the reduction of various pollutant such as p -CP (Huang et al, 2012; Murali et al, 2013). A previous work showed that both acidogenesis and activity of fermentative bacteria could be effectively improved by lowering ORP (Liu et al, 2012).…”

Section: Resultsmentioning

confidence: 99%

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Promotion of Para-Chlorophenol Reduction and Extracellular Electron Transfer in an Anaerobic System at the Presence of Iron-Oxides

et al. 2018

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Anaerobic dechlorination of chlorophenols often subjects to their toxicity and recalcitrance, presenting low loading rate and poor degradation efficiency. In this study, in order to accelerate p-chlorophenol (p-CP) reduction and extracellular electron transfer in an anaerobic system, three iron-oxide nanoparticles, namely hematite, magnetite and ferrihydrite, were coupled into an anaerobic system, with the performance and underlying role of iron-oxide nanoparticles elucidated. The reductive dechlorination of p-CP was notably improved in the anaerobic systems coupled by hematite and magnetite, although ferrihydrite did not plays a positive role. Enhanced dechlorination of p-CP in hematite or magnetite coupled anaerobic system was linked to the obvious accumulation of acetate, lower oxidation–reduction potential and pH, which were beneficial for reductive dechlorination. Electron transfer could be enhanced by Fe2+/Fe3+ redox couple on the iron oxides surface formed through dissimilatory iron-reduction. This study demonstrated that the coupling of iron-oxide nanoparticles such as hematite and magnetite could be a promising alternative to the conventional anaerobic reduction process for the removal of CPs from wastewater.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Promotion of Para-Chlorophenol Reduction and Extracellular Electron Transfer in an Anaerobic System at the Presence of Iron-Oxides

et al. 2018

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“…Propionate can not only be fermented to acetate, but also an effective electron donor for sulfate reduction . The related reactions are as following .

{CH}_{3} {CH}_{2} {COO}^{-} + {3 normalH}_{2} O \to {CH}_{3} {COO}^{-} + {HCO}_{3}^{-} + {normalH}^{+} + {3 normalH}_{2} Δ G^{0'} = + 76 . {1 kJ mol}^{- 1}

{CH}_{3} {CH}_{2} {COO}^{-} + 0. {75 SO}_{4}^{2 -} \to {CH}_{3} {COO}^{-} + {HCO}_{3}^{-} + 0. {75 HS}^{-} + 0. {25 normalH}^{+} Δ G^{0'} =^{} - 37 . {7 kJ mol}^{- 1}

…”

Section: Resultsmentioning

confidence: 99%

Effect of shocked nitrobenzene concentrations on the operational performance of anaerobic sequential batch reactor

Huang

Han

et al. 2017

Env Prog and Sustain Energy

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Two lab‐scale anaerobic sequence batch reactors (ASBRs), respectively fed with 5 mg L−1 (R1) and 200 mg L−1 (R2) of sulfate were set up in this study. A mixture of the volatile fatty acids (VFAs) containing acetate and propionate was provided as electron donors. The effects of the influent nitrobenzene (NB) concentrations and the external electron acceptor of sulfate on the operational performance of ASBRs were investigated. The results indicated that NB reduction, sulfate reduction and propionate degradation were inhibited or further terminated in response to a shocked influent NB concentration of 50 mg L−1, i.e., 32 g m−3 day−1. However, these biological activities in ASBRs could be reversibly resumed so long as the influent NB regained below 30 mg L−1. The insufficient propionate was the main electron donor for the simultaneous reductions of NB and sulfate. Sulfate can energetically compete with NB for propionate as a co‐substrate, resulting in the better performance of reactor R1 than that of R2. In engineering applications, the influent loading rates of pollutants should be safely declined below toxic thresholds to avoid the failure of system operation. © 2017 American Institute of Chemical Engineers Environ Prog, 37: 712–718, 2018

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“…In literature, several physical, chemical, and biological methods have been employed to treat NB wastewater (Huang et al, 2012a). In most reported cases, both physical and chemical methods are generally efficient with high removal rates that make them applicable for large-scale industrial wastewater treatment.…”

Section: Introductionmentioning

confidence: 99%

“…Some studies have examined the anaerobic and aerobic biodegradation pathways for NB (Kulkarni and Chaudhari, 2007;Razo-Flores et al, 1997;Huang et al, 2012a). From these studies, during anaerobic degradation, NB is reduced to aniline and then aniline is mineralized into carbon dioxide (CO 2 ) and water.…”

Section: Introductionmentioning

confidence: 99%

Nitrobenzene degradation pathways and their interaction with sulfur and nitrogen transformations in horizontal subsurface flow constructed wetlands

Kirui

Lei

et al. 2015

Ecological Engineering

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Effect of sulfate on anaerobic reduction of nitrobenzene with acetate or propionate as an electron donor

Cited by 48 publications

References 42 publications

Promotion of Para-Chlorophenol Reduction and Extracellular Electron Transfer in an Anaerobic System at the Presence of Iron-Oxides

Promotion of Para-Chlorophenol Reduction and Extracellular Electron Transfer in an Anaerobic System at the Presence of Iron-Oxides

Effect of shocked nitrobenzene concentrations on the operational performance of anaerobic sequential batch reactor

Nitrobenzene degradation pathways and their interaction with sulfur and nitrogen transformations in horizontal subsurface flow constructed wetlands

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