The performance and microbial community in a slightly alkaline biotrickling filter for the removal of high concentration H2S from biogas

Wu, Jianping; Jiang, Xia; Jin, Ziheng; Yang, Senlin; Zhang, Jin

doi:10.1016/j.chemosphere.2020.126127

Cited by 36 publications

(17 citation statements)

References 54 publications

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“…Hydrogen sulfide is an acid gas, so alkaline conditions are more conducive for the absorption of hydrogen sulfide (de Rink et al 2020 ). In addition, hydrogen sulfide exhibits low toxicity to microorganisms under alkaline conditions (Wu et al 2020 ). We found that the optimal pH of 8.0 for the growth of alkaliphilic H .…”

Section: Discussionmentioning

confidence: 99%

Development of whole-cell catalyst system for sulfide biotreatment based on the engineered haloalkaliphilic bacterium

et al. 2021

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Microorganisms play an essential role in sulfide removal. Alkaline absorption solution facilitates the sulfide’s dissolution and oxidative degradation, so haloalkaliphile is a prospective source for environmental-friendly and cost-effective biodesulfurization. In this research, 484 sulfide oxidation genes were identified from the metagenomes of the soda-saline lakes and a haloalkaliphilic heterotrophic bacterium Halomonas salifodinae IM328 (=CGMCC 22183) was isolated from the same habitat as the host for expression of a representative sequence. The genetic manipulation was successfully achieved through the conjugation transformation method, and sulfide: quinone oxidoreductase gene (sqr) was expressed via pBBR1MCS derivative plasmid. Furthermore, a whole-cell catalyst system was developed by using the engineered strain that exhibited a higher rate of sulfide oxidation under the optimal alkaline pH of 9.0. The whole-cell catalyst could be recycled six times to maintain the sulfide oxidation rates from 41.451 to 80.216 µmol·min−1·g−1 dry cell mass. To summarize, a whole-cell catalyst system based on the engineered haloalkaliphilic bacterium is potentiated to be applied in the sulfide treatment at a reduced cost.

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Section: Discussionmentioning

confidence: 99%

Development of whole-cell catalyst system for sulfide biotreatment based on the engineered haloalkaliphilic bacterium

et al. 2021

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“…Bio-desulfurization is based on the inoculation of microorganisms, mainly from the families of Thiobacillus, Thiomonas, Paracoccus, Acidithiobacillus, Sulfurimonas or Halothiobacillus, which oxidize H 2 S to elemental sulfur, sulfate, or thiosulfate through bacterial activity [9,16,23]. Biological-based methods have some advantages over the physical-chemical techniques, such as less intensive operational conditions, and thus, lower operational costs, energy consumption, and emissions of secondary pollutants [24,25]. Biological-based techniques can be divided into two categories: internal and external desulfurization [20].…”

Section: Introductionmentioning

confidence: 99%

“…According to Wu et al (2020), BTF is currently the most widely used method for cost-effective H 2 S removal [25]. It has been suggested that the biological process should be monitored and controlled to reduce issues, such as bed clogging [27].…”

Section: Introductionmentioning

confidence: 99%

“…It has been suggested that the biological process should be monitored and controlled to reduce issues, such as bed clogging [27]. Additionally, with high H 2 S concentrations in the biogas, a nitrate source may be needed to support high biological growth rates [24,25]. Using a BTF system, Zhang et al (2020) obtained more than 95% H 2 S removal, and Dupnock and Deshusses (2020) showed more than 97% H 2 S removal from biogas [10,12].…”

Section: Introductionmentioning

confidence: 99%

“…Using a BTF system, Zhang et al (2020) obtained more than 95% H 2 S removal, and Dupnock and Deshusses (2020) showed more than 97% H 2 S removal from biogas [10,12]. Wu et al (2020) showed 100% removal of H 2 S using a slightly alkaline BTF with polypropylene rings as the packing material and air injection to provide the O 2 used as the electron acceptor [25]. Khanongnuch et al (2019aKhanongnuch et al ( , 2019b) used Thiobacillus sp.…”

Section: Introductionmentioning

confidence: 99%

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Comparing Hydrogen Sulfide Removal Efficiency in a Field-Scale Digester Using Microaeration and Iron Filters

et al. 2020

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Biological desulfurization of biogas from a field-scale anaerobic digester in Peru was tested using air injection (microaeration) in separate duplicate vessels and chemical desulfurization using duplicate iron filters to compare hydrogen sulfide (H2S) reduction, feasibility, and cost. Microaeration was tested after biogas retention times of 2 and 4 h after a single injection of ambient air at 2 L/min. The microaeration vessels contained digester sludge to seed sulfur-oxidizing bacteria and facilitate H2S removal. The average H2S removal efficiency using iron filters was 32.91%, with a maximum of 70.21%. The average H2S removal efficiency by iron filters was significantly lower than microaeration after 2 and 4 h retention times (91.5% and 99.8%, respectively). The longer retention time (4 h) resulted in a higher average removal efficiency (99.8%) compared to 2 h (91.5%). The sulfur concentration in the microaeration treatment vessel was 493% higher after 50 days of treatments, indicating that the bacterial community present in the liquid phase of the vessels effectively sequestered the sulfur compounds from the biogas. The H2S removal cost for microaeration (2 h: $29/m3 H2S removed; and 4 h: $27/m3 H2S removed) was an order of magnitude lower than for the iron filter ($382/m3 H2S removed). In the small-scale anaerobic digestion system in Peru, microaeration was more efficient and cost effective for desulfurizing the biogas than the use of iron filters.

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Biological removal of gas‐phase H₂S in hollow fibre membrane bioreactors

Das

Ravishankar

Lens

2021

J of Chemical Tech & Biotech

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BACKGROUND Hydrogen sulphide (H2S) must be treated at its emission source to avoid health risks, odour, and corrosion. Conventional physico‐chemical H2S removal technologies (for example, membrane contactors or chemical scrubbers) have several limitations, such as requiring high amounts of absorption chemicals and energy. In contrast, biological H2S removal technologies are environment friendly, easy to operate, and less expensive due to their low energy requirements. In this study, the feasibility of a porous hydrophilic polyethersulfone hollow fibre membrane bioreactor (HFMB) was tested for the biological removal of gas‐phase H2S by employing three lab‐scale reactors (two biotic and one abiotic). The HFMBs were operated at ~20 °C for ~3 months, employing different H2S inlet loading rates (ILR) and an empty bed residence time of 187 s. RESULTS Biotic performance of the HFMBs demonstrated that the removal efficiency (RE) varied between the different inocula and was in the range of 80–100% for the applied H2S ILR of ~5.0–7.5 g m−3 h−1. The RE reached a constant value of ~100% in both biotic reactors at an ILR of ~17.0 g m−3 h−1 when using acclimatized inoculum. The biotic HFMBs demonstrated ~5–9 times higher H2S flux and ~ 20–26 times higher mass transfer compared to the abiotic control. Surface morphology revealed attached microbial growth on the outer surface of the membranes, while the high throughput sequencing confirmed the richness of H2S oxidizing microbial communities on the shell side. CONCLUSION The obtained results confirm that the HFMB configuration is suitable for biological treatment of H2S laden waste gas. © 2021 Society of Chemical Industry (SCI).

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The performance and microbial community in a slightly alkaline biotrickling filter for the removal of high concentration H2S from biogas

Cited by 36 publications

References 54 publications

Development of whole-cell catalyst system for sulfide biotreatment based on the engineered haloalkaliphilic bacterium

Development of whole-cell catalyst system for sulfide biotreatment based on the engineered haloalkaliphilic bacterium

Comparing Hydrogen Sulfide Removal Efficiency in a Field-Scale Digester Using Microaeration and Iron Filters

Biological removal of gas‐phase H₂S in hollow fibre membrane bioreactors

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The performance and microbial community in a slightly alkaline biotrickling filter for the removal of high concentration H2S from biogas

Cited by 36 publications

References 54 publications

Development of whole-cell catalyst system for sulfide biotreatment based on the engineered haloalkaliphilic bacterium

Development of whole-cell catalyst system for sulfide biotreatment based on the engineered haloalkaliphilic bacterium

Comparing Hydrogen Sulfide Removal Efficiency in a Field-Scale Digester Using Microaeration and Iron Filters

Biological removal of gas‐phase H2S in hollow fibre membrane bioreactors

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Biological removal of gas‐phase H₂S in hollow fibre membrane bioreactors