H2S removal and microbial community composition in an anoxic biotrickling filter under autotrophic and mixotrophic conditions

Khanongnuch, Ramita; Capua, Francesco Di; Lakaniemi, Aino–Maija; Rene, Eldon R.; Lens, Piet N.L.

doi:10.1016/j.jhazmat.2018.12.062

Cited by 69 publications

(29 citation statements)

References 36 publications

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“…Since the final product of the H 2 S biological oxidation can be either S 0 or SO 4 2− , the O 2 mass transfer from gas to aqueous phase and biofilm ( Figure 4) is one of the major parameters of this technology to ensure local stoichiometric level of O 2 in the biofilm [64]. Biogas desulfurization in BTFs through H 2 S oxidation under chemolithoautotrophic denitrifying conditions has been recently recognized as a promising option [65][66][67][68] [69] and easier management and control of the bioreactor operational condition, ensuring a stable and efficient operation [26]. Another advantage is that S 0 can be recovered from bioscrubbers and that there are no clogging problems.…”

Section: Biofiltration Technologiesmentioning

confidence: 99%

Microbial Ecology of Biofiltration Units Used for the Desulfurization of Biogas

Borgne

Baquerizo

2019

ChemEngineering

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Bacterial communities’ composition, activity and robustness determines the effectiveness of biofiltration units for the desulfurization of biogas. It is therefore important to get a better understanding of the bacterial communities that coexist in biofiltration units under different operational conditions for the removal of H2S, the main reduced sulfur compound to eliminate in biogas. This review presents the main characteristics of sulfur-oxidizing chemotrophic bacteria that are the base of the biological transformation of H2S to innocuous products in biofilters. A survey of the existing biofiltration technologies in relation to H2S elimination is then presented followed by a review of the microbial ecology studies performed to date on biotrickling filter units for the treatment of H2S in biogas under aerobic and anoxic conditions.

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Section: Biofiltration Technologiesmentioning

confidence: 99%

Microbial Ecology of Biofiltration Units Used for the Desulfurization of Biogas

Borgne

Baquerizo

2019

ChemEngineering

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“…Furthermore, bacteria belonging to these two families have been observed in bioelectrochemical systems, both for the removal of inorganic compounds, such as H2S and NO3 -under autotrophic or mixotrophic conditions [63,65], and for Cr(VI) bioreduction [21,66].…”

Section: Microbial Communitiesmentioning

confidence: 99%

“…Furthermore, bacteria belonging to these two families have been observed in bioelectrochemical systems, both for the removal of inorganic compounds, such as H 2 S and NO 3 − under autotrophic or mixotrophic conditions [63,65], and for Cr(VI) bioreduction [21,66]. The results of 16S rRNA gene sequencing of the biofilms developed on the polarized electrode (POL −0.3 V electrode) and on the graphite in the open circuit control (OC graphite) were compared, starting from the order level ( Figure 6) and it was deepened on a genus level ( The only genus detected within the Flavobacteriales order was Moheibacter.…”

Section: Microbial Communitiesmentioning

confidence: 99%

Microbial Assisted Hexavalent Chromium Removal in Bioelectrochemical Systems

Beretta

Daghio

Espinoza-Tofalos

et al. 2020

Water

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Groundwater is the environmental matrix that is most frequently affected by anthropogenic hexavalent chromium contamination. Due to its carcinogenicity, Cr(VI) has to be removed, using environmental-friendly and economically sustainable remediation technologies. BioElectrochemical Systems (BESs), applied to bioremediation, thereby offering a promising alternative to traditional bioremediation techniques, without affecting the natural groundwater conditions. Some bacterial families are capable of oxidizing and/or reducing a solid electrode obtaining an energetic advantage for their own growth. In the present study, we assessed the possibility of stimulating bioelectrochemical reduction of Cr(VI) in a dual-chamber polarized system using an electrode as the sole energy source. To develop an electroactive microbial community three electrodes were, at first, inserted into the anodic compartment of a dual-chamber microbial fuel cell, and inoculated with sludge from an anaerobic digester. After a period of acclimation, one electrode was transferred into a polarized system and it was fixed at −0.3 V (versus standard hydrogen electrode, SHE), to promote the reduction of 1000 µg Cr(VI) L−1. A second electrode, served for the set-up of an open circuit control, operated in parallel. Cr(VI) dissolved concentration was analysed at the initial, during the experiment and final time by spectrophotometric method. Initial and final microbial characterization of the communities enriched in polarized system and open circuit control was performed by 16S rRNA gene sequencing. The bioelectrode set at −0.3 V showed high Cr(VI) removal efficiency (up to 93%) and about 150 µg L−1 day−1 removal rate. Similar efficiency was observed in the open circuit (OC) even at about half rate. Whereas, purely electrochemical reduction, limited to 35%, due to neutral operating conditions. These results suggest that bioelectrochemical Cr(VI) removal by polarized electrode offers a promising new and sustainable approach to the treatment of groundwater Cr(VI) plumes, deserving further research.

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“…Another study undertaken in Ref. [125] not only tested the effectiveness of H 2 S removal in an anoxic biotrickling filter, but also demonstrated that the composition of the microbial community varied for different H 2 S and NO 3 − loads. Generally speaking, the employment of biological agents in facilitating the oxidation of sulphides as in the case with in-situ microaeration, BTF and BF can intuitively be considered a more environmentally friendly approach compared to the in-situ chemical dosing strategy discussed above, since all inputs occur in nature with no chemicals employed.…”

Section: Chemengineering 2019 3 X For Peer Reviewmentioning

confidence: 99%

Desulphurisation of Biogas: A Systematic Qualitative and Economic-Based Quantitative Review of Alternative Strategies

Okoro

Sun

2019

ChemEngineering

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The desulphurisation of biogas for hydrogen sulphide (H2S) removal constitutes a significant challenge in the area of biogas research. This is because the retention of H2S in biogas presents negative consequences on human health and equipment durability. The negative impacts are reflective of the potentially fatal and corrosive consequences reported when biogas containing H2S is inhaled and employed as a boiler biofuel, respectively. Recognising the importance of producing H2S-free biogas, this paper explores the current state of research in the area of desulphurisation of biogas. In the present paper, physical–chemical, biological, in-situ, and post-biogas desulphurisation strategies were extensively reviewed as the basis for providing a qualitative comparison of the strategies. Additionally, a review of the costing data combined with an analysis of the inherent data uncertainties due underlying estimation assumptions have also been undertaken to provide a basis for quantitative comparison of the desulphurisation strategies. It is anticipated that the combination of the qualitative and quantitative comparison approaches employed in assessing the desulphurisation strategies reviewed in the present paper will aid in future decisions involving the selection of the preferred biogas desulphurisation strategy to satisfy specific economic and performance-related targets.

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H2S removal and microbial community composition in an anoxic biotrickling filter under autotrophic and mixotrophic conditions

Cited by 69 publications

References 36 publications

Microbial Ecology of Biofiltration Units Used for the Desulfurization of Biogas

Microbial Ecology of Biofiltration Units Used for the Desulfurization of Biogas

Microbial Assisted Hexavalent Chromium Removal in Bioelectrochemical Systems

Desulphurisation of Biogas: A Systematic Qualitative and Economic-Based Quantitative Review of Alternative Strategies

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