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Fermentation
Special Issues
New Research on Biomethane Production
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New Research on Biomethane Production

A special issue of Fermentation (ISSN 2311-5637). This special issue belongs to the section "Industrial Fermentation".

Deadline for manuscript submissions: 31 May 2024 | Viewed by 3058

Special Issue Editor

Dr. Xin Kong

E-Mail Website
Guest Editor
College of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan, China
Interests: anaerobic digestion; anaerobic fermentation; biogas; methane; volatile fatty acids; syntrophic methanogenesis; interspecies electron transfer; food waste; kitchen waste; organic fraction of municipal solid waste

Special Issue Information

Dear Colleagues,

Biomethane is a valuable products for heat or electric power generation, however, its disordered release would result in global temperature raising, due to its high greenhouse effects. The biomethane is produced from the biological processes, such as anaerobic digestion and landfill. Furthermore, wetland is another key biomethane emission source. Biomethane generation is a complex microbial metabolism, and numerous studies have focused on this issue, including syntrophic relationships among different microbes, methane generation enhancement, and electron transfer between hydrolysis microorganism and methanogens. Potential topics of this species issue include but are not limited to: biomethane production from anaerobic digestion of biowaste, characteristics of microbial metabolism during biomethane production process, biomethane oxidation, biomethane release control, biomethane release characteristics.

We welcome original research, review and mini-review articles.

Dr. Xin Kong
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Fermentation is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • anaerobic digestion
  • anaerobic fermentation
  • biogas
  • methane
  • volatile fatty acids
  • syntrophic methanogenesis
  • interspecies electron transfer
  • food waste
  • kitchen waste
  • organic fraction of municipal solid waste

Published Papers (2 papers)

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Research

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18 pages, 4080 KiB  
Article
Characteristics of Biogas Production Activity and Microbial Community during Sub-Moderate Temperature Anaerobic Digestion of Wastewater
by Jingwei Wu, Huan Zhang, Ye Zhao, Xufeng Yuan and Zongjun Cui
Fermentation 2023, 9(10), 903; https://doi.org/10.3390/fermentation9100903 - 10 Oct 2023
Cited by 1 | Viewed by 1262
Abstract
Sub-moderate temperature (ranging from low to moderate temperature) anaerobic digestion (AD) could balance fermentation efficiency and energy input. We investigated biogas production and the microbial community in wastewater AD at sub-moderate (15 °C, 20 °C, and 25 °C) and moderate (35 °C; control [...] Read more.
Sub-moderate temperature (ranging from low to moderate temperature) anaerobic digestion (AD) could balance fermentation efficiency and energy input. We investigated biogas production and the microbial community in wastewater AD at sub-moderate (15 °C, 20 °C, and 25 °C) and moderate (35 °C; control group) temperatures with the organic loading rate (OLR) incrementally increased over 200 days. The impact of temperature on biogas production was found to be minimal at a low OLR but became more significant at a high OLR. Notably, a temperature threshold ranging from 15 °C to 20 °C exerted a strong inhibitory effect on biogas production and disrupted the microbial community. And, SMT-AD is deemed by this study to be the optimal application strategy of wastewater with low temperature and low OLR. Bacterial richness was positively and linearly related to temperature. There is a relevance between methane production and archaeal diversity under the influence of temperature and OLR. Temperature and OLR shaped the ecological function of predominant bacteria. Anaerolineales, Thermotogales, and Lactobacillales were strongly influenced by temperature. Synergistales had a synergistic relationship with Desulfovibrionales. Clostridiales was responsible for acetate and butyrate production and closely related to Lactobacillales. Acetoclastic Methanosaetaceae was the predominant methanogen. Methanogens could survive and maintain their population even though methanogenesis was limited under high OLRs and low temperatures. Full article
(This article belongs to the Special Issue New Research on Biomethane Production)
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Review

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19 pages, 964 KiB  
Review
Enhanced Anaerobic Digestion Using Conductive Materials through Mediation of Direct Microbial Interspecies Electron Transfer: A Review
by Tianqi Kong and Wanli Zhang
Fermentation 2023, 9(10), 884; https://doi.org/10.3390/fermentation9100884 - 29 Sep 2023
Viewed by 1414
Abstract
The anaerobic digestion (AD) of organic matter is susceptible to the challenges posed by low-speed electron transfer between microorganisms and the limitation of low hydrogen partial pressure, resulting in low methane recovery efficiency and poor system stability. Numerous studies in recent years have [...] Read more.
The anaerobic digestion (AD) of organic matter is susceptible to the challenges posed by low-speed electron transfer between microorganisms and the limitation of low hydrogen partial pressure, resulting in low methane recovery efficiency and poor system stability. Numerous studies in recent years have shown that a variety of conductive materials can significantly increase the interspecies electron transfer (IET) rate, optimize the structure and function of anaerobic microbial communities, improve methane yield, and promote system stability by mediating the direct interspecies electron transfer (DIET) of reciprocal microorganisms. In this study, on the basis of investigating the IET mechanism of methanogenic microorganisms in the AD of organic matter, the effects of carbon-based conductive materials (activated carbon, biochar, carbon cloth, carbon fiber, graphite, graphite felt, graphene, and carbon nanotubes) and iron-based conductive materials (magnetite, Fe3O4, hematite, Fe2O3, goethite, and zero-valent iron) on AD performance and microbial community using DIET are reviewed. Future research should focus on establishing an evaluation system, identifying flora with DIET potential, and finding methods for engineering applications that increase recovery efficiency and reveal the principle of conductive materials to mediate DIET. Full article
(This article belongs to the Special Issue New Research on Biomethane Production)
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