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Fermentation
Special Issues
Anaerobic Fermentation of Biomass Waste for Methane Production
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Anaerobic Fermentation of Biomass Waste for Methane Production

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

Deadline for manuscript submissions: closed (15 August 2023) | Viewed by 3910

Special Issue Editor

Prof. Dr. Yutuo Wei

E-Mail Website
Guest Editor
State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi Research Center for Microbial and Enzymatic Technology, College of Life Science and Technology, Guangxi University, Daxue Road No. 100, Nanning 530005, China
Interests: anaerobic digestion; bioenergy; lignocellulosic biomass; engineered bacteria; microbial biotechnology; microbial engineering

Special Issue Information

Dear Colleagues,

Biomass waste encompasses a wide range of materials that include agricultural wastes, forestry residues, fruit processing waste, and waste from the processing of other fields. These types of waste can cause serious environmental issues if they are not disposed of properly. Biomass waste contains higher organic fractions, and its role as a resource useful for creating value-added outcomes has become increasingly recognized.

Anaerobic digestion (AD), widely considered as a promising method for converting biomass wastes into biogas/methane as a potential substitute for fossil fuels, is attracting increasing interest in all corners of the globe. However, due to the complexity of biomass substrates, there are still some limitations and detrimental effects on the AD. Therefore, developing an effective and innovative AD technology for using and managing various types of biomass waste is critical.

The objective of this Special Issue is to highlight some of the innovative advances in the AD of biomass waste, while also being particularly interested in research and critical reviews on the pretreatment and post-treatment of substrates in AD, co-digestion, and methanation pathways. If you would like to contribute a review paper, please contact one of the editors to discuss the topic relevance before submitting the manuscript.

Prof. Dr. Yutuo Wei
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

  • biomass waste
  • anaerobic digestion
  • methane
  • lignocellulose biomass
  • pretreatment
  • co-digestion
  • methanogenesis
  • methanation pathway

Published Papers (2 papers)

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Research

18 pages, 5648 KiB  
Article
Impact of Hydrothermal Pretreatment Parameters on Mesophilic and Thermophilic Fermentation and Anaerobic Digestion of Municipal Sludge
by Farokh Laqa Kakar, Hussain Aqeel, Steven N. Liss and Elsayed Elbeshbishy
Fermentation 2023, 9(6), 508; https://doi.org/10.3390/fermentation9060508 - 25 May 2023
Viewed by 1843
Abstract
Four parameters affecting hydrothermal pretreatment (HTP) of municipal sludge prior to anaerobic digestion and fermentation were investigated. Partial factorial design including several key HTP parameters at two distinct levels, including temperature (170 and 190 °C), retention time (RT) (10 and 30 min), pH [...] Read more.
Four parameters affecting hydrothermal pretreatment (HTP) of municipal sludge prior to anaerobic digestion and fermentation were investigated. Partial factorial design including several key HTP parameters at two distinct levels, including temperature (170 and 190 °C), retention time (RT) (10 and 30 min), pH (4 and 10), and solid content (SC) (4% and 16%), were studied. Further, the impact of HTP parameters on mesophilic and thermophilic fermentation was explored and compared. Results revealed a significant effect of all HTP parameters on COD solubilization, VFA, and methane yield. There were correlations between HTP parameters and process responses such as VFA yield and methane yield. HTP was found to increase COD solubilization and VFA production between 15 and 20% during thermophilic fermentation in relation to mesophilic treatment. All parameters, including SC, temperature, pH, and RT, were important contributing factors affecting methane production during anaerobic digestion. The highest methane production yield of 269 mL CH4/g TCOD added was observed at the highest SC (16%) and pH (10) and at the lower temperature (170 °C) and RT (10). HTP is expected to be combined with other intensification routes to treat waste with high solid contents improving the fermentation and anaerobic digestion processes. Full article
(This article belongs to the Special Issue Anaerobic Fermentation of Biomass Waste for Methane Production)
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24 pages, 9292 KiB  
Article
Omics Sequencing of Saccharomyces cerevisiae Strain with Improved Capacity for Ethanol Production
by Zhilong Lu, Ling Guo, Xiaoling Chen, Qi Lu, Yanling Wu, Dong Chen, Renzhi Wu and Ying Chen
Fermentation 2023, 9(5), 483; https://doi.org/10.3390/fermentation9050483 - 18 May 2023
Viewed by 1588
Abstract
Saccharomyces cerevisiae is the most important industrial microorganism used to fuel ethanol production worldwide. Herein, we obtained a mutant S. cerevisiae strain with improved capacity for ethanol fermentation, from 13.72% (v/v for the wild-type strain) to 16.13% (v/ [...] Read more.
Saccharomyces cerevisiae is the most important industrial microorganism used to fuel ethanol production worldwide. Herein, we obtained a mutant S. cerevisiae strain with improved capacity for ethanol fermentation, from 13.72% (v/v for the wild-type strain) to 16.13% (v/v for the mutant strain), and analyzed its genomic structure and gene expression changes. Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment revealed that the changed genes were mainly enriched in the pathways of carbohydrate metabolism, amino acid metabolism, metabolism of cofactors and vitamins, and lipid metabolism. The gene expression trends of the two strains were recorded during fermentation to create a timeline. Venn diagram analysis revealed exclusive genes in the mutant strain. KEGG enrichment of these genes showed upregulation of genes involved in sugar metabolism, mitogen-activated protein kinase pathway, fatty acid and amino acid degradation, and downregulation of genes involved in oxidative phosphorylation, ribosome, fatty acid and amino acid biogenesis. Protein interaction analysis of these genes showed that glucose-6-phosphate isomerase 1, signal peptidase complex subunit 3, 6-phosphofructokinase 2, and trifunctional aldehyde reductase were the major hub genes in the network, linking pathways together. These findings provide new insights into the adaptive metabolism of S. cerevisiae for ethanol production and a framework for the construction of engineered strains of S. cerevisiae with excellent ethanol fermentation capacity. Full article
(This article belongs to the Special Issue Anaerobic Fermentation of Biomass Waste for Methane Production)
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