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Biogas Production from Organic Waste
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Biogas Production from Organic Waste

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "A4: Bio-Energy".

Deadline for manuscript submissions: closed (31 December 2021) | Viewed by 9775
Submit your paper and select the Journal “Energies” and the Special Issue “Biogas Production from Organic Waste” via: https://susy.mdpi.com/user/manuscripts/upload?journal=energies. Please contact the guest editor or the journal editor ([email protected]) for any queries.

Special Issue Editors

Dr. Sabzoi Nizamuddin

E-Mail Website
Guest Editor
School of Engineering, Royal Melbourne Institute of Technology (RMIT) University, Melbourne, VIC 3000, Australia
Interests: biomass utilization; bioenergy; hydrothermal processing; gasification
Special Issues, Collections and Topics in MDPI journals
Dr. Mubarak Mujawar

E-Mail Website
Guest Editor
Department of Chemical Engineering, Faculty of Engineering and Science, Curtin University, 98009 Sarawak, Malaysia
Interests: biochar; magnetic biochar; biofuel; CNT, CNFs; renewable energy; wastewater treatment
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Organic waste from plant and animal sources is a renewable source of energy. Various studies have reported on the sustainable utilization of these organic wastes to produce chemicals; fuels; bio-functional materials; catalysts; and bio-fuels such as biochar, hydrochar, bio-oil and biogas. Policies and concerns regarding the adoption of transforming renewable energy techniques over fossil fuels have triggered the use of renewable energy technologies, such as biogas production from organic wastes. Even though biogas production is an established technology, biogass offers low energetic value and contains impurities that make the process less effective and problematic. To make the process more effective are needed proper waste collection or channelling, optimized fermentation methologies, the efficient recovery and utilization of byproducts from the organic waste, biogas upgrading and valorization, the removal of sulfur content and other impurities, effluent treatment, etc. This Special Issue focuses on highlighting problems and suggesting solutions related to the production and valorization of biogas from organic waste. Both original studies and review articles within the theme of the Special Issue are invited.

Dr. Sabzoi Nizamuddin
Dr. Mubarak Mujawar
Guest Editors

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. Energies is an international peer-reviewed open access semimonthly 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

  • organic waste
  • biogas production
  • upgrading
  • gasification
  • alternative fuels

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Published Papers (3 papers)

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Research

12 pages, 1264 KiB  
Article
The Effects of Using Pretreated Cotton Gin Trash on the Production of Biogas from Anaerobic Co-Digestion with Cow Manure and Sludge
by Muhammad Usman Hanif, Mohammed Zwawi, Mohammed Algarni, Ali Bahadar, Hamid Iqbal, Sergio C. Capareda, Muhammad Adnan Hanif, Adeel Waqas, Nazia Hossain, Muhammad Tahir Hussain Siddiqui, Sabzoi Nizamuddin and Asma Jamil
Energies 2022, 15(2), 490; https://doi.org/10.3390/en15020490 - 11 Jan 2022
Cited by 7 | Viewed by 2235
Abstract
Anaerobic co-digestion (AcoD) has been practiced for decades to convert waste into value-added energy products, especially biogas. This study aimed to assess the potential of biogenic methane (CH4) production from the co-digestion of pretreated cotton gin trash (CGT), cow manure, and [...] Read more.
Anaerobic co-digestion (AcoD) has been practiced for decades to convert waste into value-added energy products, especially biogas. This study aimed to assess the potential of biogenic methane (CH4) production from the co-digestion of pretreated cotton gin trash (CGT), cow manure, and sludge. CGT contains high cellulosic content, making it a reliable feedstock for biogenic methane production. To further improve the biogas quantity and quality, the CGT was subjected to physical pretreatments, i.e., hot water (HW), ultra-sonication (US), and a combination of both (HW+US). After 91 days of AcoD, 79–110 L of biogas was produced by the treatments. Among the treatments, HW+US-pretreated CGT presented maximum biogas production capacity, at 110 L. Besides, this treatment showed the high-quality biogenic CH4 content, 52.4% of the total biogas volume, with an improved conversion rate of 0.37 L/g of volatile suspended solids consumed. In addition, this study discussed the structural changes in feedstock due to pretreatments and correlated them with the corresponding biogenic methane production. The study reports the potential of pretreated CGT conversion to CH4. It will impact the circular economy by contributing to on-farm energy requirements and reducing the financial expenditures incurred in this regard. Full article
(This article belongs to the Special Issue Biogas Production from Organic Waste)
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13 pages, 2113 KiB  
Article
Effect of Biochar Addition on the Microbial Community and Methane Production in the Rapid Degradation Process of Corn Straw
by Zhi Wang, Ying Guo, Weiwei Wang, Liumeng Chen, Yongming Sun, Tao Xing and Xiaoying Kong
Energies 2021, 14(8), 2223; https://doi.org/10.3390/en14082223 - 16 Apr 2021
Cited by 8 | Viewed by 2240
Abstract
Anaerobic digestion with corn straw faces the problems of difficult degradation, long fermentation time and acid accumulation in the high concentration of feedstocks. In order to speed up the process of methane production, corn straw treated with sodium hydroxide was used in thermophilic [...] Read more.
Anaerobic digestion with corn straw faces the problems of difficult degradation, long fermentation time and acid accumulation in the high concentration of feedstocks. In order to speed up the process of methane production, corn straw treated with sodium hydroxide was used in thermophilic (50 °C) anaerobic digestion, and the effects of biochar addition on the performance of methane production and the microbial community were analyzed. The results showed that the cumulative methane production of all treatment groups reached over 75% of the theoretical methane yield in 7 days and the addition of 4% biochar increased the cumulative methane production by 6.75% compared to the control group. The addition of biochar also decreased the number of biogas and methane production peaks from 2 to 1, and had a positive effect on shortening the digestion start-up period and reducing the fluctuation of biogas production during the digestion process. The addition of 4% biochar increased the abundance of the bacterial family Peptococcaceae throughout the digestion period, promoting the hydrolysis rate of corn straw. The dominant archaeal genus Methanosarcina was significantly more abundant at the peak stage and the end of methane production with 4% biochar added compared to the control group. Full article
(This article belongs to the Special Issue Biogas Production from Organic Waste)
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14 pages, 1059 KiB  
Article
Comparing Hydrogen Sulfide Removal Efficiency in a Field-Scale Digester Using Microaeration and Iron Filters
by Joanna K. Huertas, Lawrence Quipuzco, Amro Hassanein and Stephanie Lansing
Energies 2020, 13(18), 4793; https://doi.org/10.3390/en13184793 - 14 Sep 2020
Cited by 22 | Viewed by 4119
Abstract
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 [...] Read more.
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. Full article
(This article belongs to the Special Issue Biogas Production from Organic Waste)
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