Anaerobic co-metabolic biodegradation of tetrabromobisphenol A using a bioelectrochemical system

Fan, Mengjie; Zhou, Nannan; Li, Peiwen; Chen, Liuliu; Chen, Yingwen; Shen, Shubao; Zhu, Songming

doi:10.1016/j.jhazmat.2016.09.068

Cited by 55 publications

(12 citation statements)

References 28 publications

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“…Two other SRB Desulfuromonas (1.3–10.0%) and Desulfomicrobium (0.37–1.8%) were also found . Besides, a wide variety of anaerobic fermentative bacteria (AFB) also constituted an important part of the bacterial genera. − The whole bacterial community was mainly composed of 54.6–73.8% SRB and 12.7–36.4% AFB. Subjected to long-term Hg 0 feeding, SRB became increasingly dominant (54.6 to 73.8%) while AFB became less abundant (36.4 to 12.7%).…”

Section: Resultsmentioning

confidence: 99%

Bio-oxidation of Elemental Mercury into Mercury Sulfide and Humic Acid-Bound Mercury by Sulfate Reduction for Hg⁰ Removal in Flue Gas

Huang

Wei

Xiao

et al. 2019

Environ. Sci. Technol.

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Bioconversion of elemental mercury (Hg0) into immobile, nontoxic, and less bioavailable species is of vital environmental significance. Here, we investigated bioconversion of Hg0 in a sulfate-reducing membrane biofilm reactor (MBfR). The MBfR achieved effective Hg0 removal by sulfate bioreduction. 16 S rDNA sequencing and metagenomic sequencing revealed that diverse groups of mercury-oxidizing/sulfate-reducing bacteria (Desulfobulbus, Desulfuromonas, Desulfomicrobium, etc.) utilized Hg0 as the initial electron donor and sulfate as the terminal electron acceptor to form the overall redox. These microorganisms coupled Hg0 bio-oxidation to sulfate bioreduction. Analysis on mercury speciation in biofilm by sequential extraction processes (SEPs) and inductively coupled mass spectrometry (ICP-MS) and by mercury temperature programmed desorption (Hg-TPD) showed that mercury sulfide (HgS) and humic acid-bound mercury (HA-Hg) were two major products of Hg0 bio-oxidation. With HgS and HA-Hg comprehensively characterized by X-ray diffraction (XRD), excitation-emission matrix spectra (EEM), scanning electron microscopy-energy disperse spectroscopy (SEM-EDS), X-ray photoelectron spectroscopy (XPS), and Fourier transform infrared spectroscopy (FTIR), it was proposed that biologically oxidized mercury (Hg2+) further reacted with biogenic sulfides to form cubically crystallized metacinnabar (β-HgS) extracellular particles. Hg2+ was also complexed with functional groups −SH, −OH, −NH–, and −COO– in humic acids from extracellular polymeric substances (EPS) to form HA-Hg. HA-Hg may further react with biogenic sulfides to form HgS. Bioconversion of Hg0 into HgS was therefore achieved and can be a feasible biotechnique for flue gas demercuration.

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Section: Resultsmentioning

confidence: 99%

Bio-oxidation of Elemental Mercury into Mercury Sulfide and Humic Acid-Bound Mercury by Sulfate Reduction for Hg⁰ Removal in Flue Gas

Huang

Wei

Xiao

et al. 2019

Environ. Sci. Technol.

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“…TOC usually represents the total amount of carbon in the organic matter. It is an important index for assessing the degradation of organic matter in water . The TOC removal efficiency in ECS was only 4.19 ± 2.16% (Fig.…”

Section: Resultsmentioning

confidence: 99%

Bioaugmentation of p‐chloronitrobenzene in bioelectrochemical systems with Pseudomonas fluorescens

Song

Zhou

Wang

et al. 2019

J of Chemical Tech & Biotech

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BACKGROUND: p-Chloronitrobenzene (p-CNB) is easily accumulated in the environment and subsequently is a threat to humans and the ecosystem. The anaerobic process as an important pathway for p-CNB degradation has a relatively low degradation rate. This study illustrated that the strain Pseudomonas fluorescens was evaluated as the biocatalyst for bioaugmentation to enhance the p-CNB removal in bioelectrochemical system (BES). RESULTS:When the initial p-CNB concentration was 100 mg L −1 , the p-CNB removal efficiency reached 100% at 12 h in BES with P. fluorescens. All the p-CNB removal efficiencies in BES were higher than that in anaerobic degradation and electrocatalysis. Meantime, the highest total organic carbon (TOC) removal efficiency was obtained at 89.8% after augmentation with P. fluorescens. During the bioaugmentation, microbial community analysis showed that the main abundance changes were in Pseudomonas, Romboutsia and Macellibacteroides. The cyclic voltammetry (CV) showed BES with bioaugmentation had the highest activity in reducing p-CNB and hydrogen evolution. Combined with intermediates analysis, bioaugmentation possibly stimulated nitro reduction and hydrodechlorination rate in p-CNB reduction.CONCLUSION: These results demonstrate that BES with P. fluorescens bioaugmentation could serve as a potential treatment process for p-CNB removal. Microbial communitySamples were collected from biofilm on the cathode in BES-I, BES-IP and AEC-I at the end of the experiment using bacterial 16S rDNA sequence analysis on an Illumina platform. The PowerSoil ® J Chem Technol Biotechnol 2020; 95: 274-280

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“…TOC is an important index for assessing the degradation of organic matter in water. 29 The TOC removal efficiency of CTC is shown in Fig. 2a .…”

Section: Resultsmentioning

confidence: 99%

Degradation characterization and pathway analysis of chlortetracycline and oxytetracycline in a microbial fuel cell

Wang

Zhou

Ge³

et al. 2018

RSC Adv.

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Anaerobic co-metabolic biodegradation of tetrabromobisphenol A using a bioelectrochemical system

Cited by 55 publications

References 28 publications

Bio-oxidation of Elemental Mercury into Mercury Sulfide and Humic Acid-Bound Mercury by Sulfate Reduction for Hg⁰ Removal in Flue Gas

Bio-oxidation of Elemental Mercury into Mercury Sulfide and Humic Acid-Bound Mercury by Sulfate Reduction for Hg⁰ Removal in Flue Gas

Bioaugmentation of p‐chloronitrobenzene in bioelectrochemical systems with Pseudomonas fluorescens

Degradation characterization and pathway analysis of chlortetracycline and oxytetracycline in a microbial fuel cell

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Anaerobic co-metabolic biodegradation of tetrabromobisphenol A using a bioelectrochemical system

Cited by 55 publications

References 28 publications

Bio-oxidation of Elemental Mercury into Mercury Sulfide and Humic Acid-Bound Mercury by Sulfate Reduction for Hg0 Removal in Flue Gas

Bio-oxidation of Elemental Mercury into Mercury Sulfide and Humic Acid-Bound Mercury by Sulfate Reduction for Hg0 Removal in Flue Gas

Bioaugmentation of p‐chloronitrobenzene in bioelectrochemical systems with Pseudomonas fluorescens

Degradation characterization and pathway analysis of chlortetracycline and oxytetracycline in a microbial fuel cell

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Product

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Bio-oxidation of Elemental Mercury into Mercury Sulfide and Humic Acid-Bound Mercury by Sulfate Reduction for Hg⁰ Removal in Flue Gas

Bio-oxidation of Elemental Mercury into Mercury Sulfide and Humic Acid-Bound Mercury by Sulfate Reduction for Hg⁰ Removal in Flue Gas