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Processes
Special Issues
Waste Management and Biogas Production Process and Application
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Waste Management and Biogas Production Process and Application

A special issue of Processes (ISSN 2227-9717). This special issue belongs to the section "Environmental and Green Processes".

Deadline for manuscript submissions: 31 August 2025 | Viewed by 1041

Special Issue Editors

Dr. KeChrist Obileke

E-Mail Website
Guest Editor
Renewable Energy Research, Department of Physics, Faculty of Science and Agriculture, University of Fort Hare, Private Bag X1314, Alice 5700, South Africa
Interests: renewable energy; biogas; biomass gasification; biofuel; anaerobic digestion
Dr. Nwabunwanne Enebe

E-Mail Website
Guest Editor
Department of Physics With Electronics, Air Force Institute of Technology, Nigerian Air Force Base, Rafin Kura, Kaduna 800283, Nigeria
Interests: biomass; gasification; biogas; anaerobic digestion

Special Issue Information

Dear Colleagues,

This Special Issue focuses on sustainable waste management techniques with a specific interest in the biogas production process and its end use application, as well as the latest advancements. An in-depth exploration of anaerobic digestion as a viable technology for converting wastes and biomass into useful energy will be covered in this issue. Furthermore, the issue will investigate the suitability of various waste as feedstocks for biogas production. The impact of design parameters and materials of construction on the performance of biogas digesters will be considered. Mathematically, models for predicting biogas yield will be studied. In addition, factors and challenges related to the performance efficiency of biogas digesters and their scalability, as well as the environmental impact of waste, are areas to be covered. Other areas of consideration include biogas upgrading, biomethanation, the enhancement of anaerobic digestion using additives, nanomaterials, and biochar, siloxane/H2S from biogas removal, alternative uses of digestate, and biogas production from landfills. Having established these areas, this study will also focus on the techno economic evaluation of the biogas digester system and the provision of biogas digesters to provide the opportunity for an integrated waste management system that combines waste treatment, energy generation, and resource recovery.

Contributions are invited from researchers and academics, energy process design and engineers, life cycle analysis, economic feasibility and waste management, and environmental sustainability in waste-to-energy research areas.

Dr. KeChrist Obileke
Dr. Nwabunwanne Enebe
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. Processes 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 2400 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
  • energy efficiency
  • energy sustainability
  • waste to energy process
  • biogas digesters
  • techno-economic feasibility and waste environmental impact assessment

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Published Papers (1 paper)

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Research

18 pages, 2027 KiB  
Article
Minimizing Carbon Dioxide (CO2) Emissions of POME Treatment System Using MILP Model
by Sivakumar Pallikodathan, Hasfalina Che Man, Tinia Idaty Mohd Ghazi, Alawi Sulaiman, Gunasilan Nagarajoo and Mohamad Firdza Shukery
Processes 2025, 13(2), 583; https://doi.org/10.3390/pr13020583 - 19 Feb 2025
Viewed by 513
Abstract
This paper presents a strategic planning model aimed at optimizing the economic and environmental impacts of palm oil mill effluent (POME) treatment systems. The model determines the optimal selection of POME treatment systems to minimize the environmental impact, specifically focusing on three systems: [...] Read more.
This paper presents a strategic planning model aimed at optimizing the economic and environmental impacts of palm oil mill effluent (POME) treatment systems. The model determines the optimal selection of POME treatment systems to minimize the environmental impact, specifically focusing on three systems: an anaerobic digester tank system (ADT), a covered lagoon system (CL) with biogas capture, and an open pond system (OP). The model incorporates constraints related to fresh fruit bunch (FFB) production, POME generation, the biological oxygen demand (BOD), the chemical oxygen demand (COD), and carbon dioxide (CO2) emissions. The optimization framework, formulated as a mixed-integer linear programming (MILP) model, is solved using the GAMS 40.1.0 software. Integer decision variables are used to represent the choice of POME treatment system that minimizes the environmental impact. The study specifically considers the ADT, CL, and OP systems, with the results indicating that the ADT system is the most effective in reducing the BOD, COD, and CO2-equivalent emissions, thereby highlighting its environmental benefits. The model selects the ADT treatment system, which exhibits the lowest COD, BOD, and CO2e emissions. Specifically, the COD registered an 85% reduction, from 84,830 mg/L to 12,725 mg/L. The BOD level was reduced by 88%, resulting in a BOD level of 41,208 mg/L to 4945 mg/L. The minimum CO2e emissions that could be achieved was about 3173 t CO2e per annum. This model provides a valuable tool for governmental agencies and policymakers to guide the private sector in developing environmentally sustainable POME treatment strategies. Full article
(This article belongs to the Special Issue Waste Management and Biogas Production Process and Application)
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