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Biomass: Clean and Renewable Energy Sources

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

Deadline for manuscript submissions: 28 February 2026 | Viewed by 368

Special Issue Editors


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Guest Editor
Department of Chemical and Biotechnological Engineering, Faculty of Engineering, Université de Sherbrooke, Sherbrooke, QC J1K 2R1, Canada
Interests: energy materials; clean energy; biomass; biofuel; process safety; heterogeneous catalysis

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Guest Editor
Department of Chemical and Biotechnological Engineering, Faculty of Engineering, Université de Sherbrooke, Sherbrooke, QC J1K 2R1, Canada
Interests: biofuels; biorefineries; CO2 conversion; catalytic conversion

Special Issue Information

Dear Colleagues, 

Biomass is a versatile and important renewable energy resource that plays a crucial role in the global clean energy transition. Currently, it is the most significant contributor to renewable energy worldwide and is expected to remain a key element in the future of low-carbon energy systems. Utilizing biomass as a fuel source helps reduce greenhouse gas emissions and enhances energy security by replacing fossil fuels with bio-based alternatives. To fully exploit the potential of biomass, advanced fundamental research and innovative applied solutions are required.

This Special Issue spans a wide range of topics in bioenergy, encompassing thermochemical and biochemical conversion pathways for producing heat, power, and fuels from biomass. Contributions are invited on both established and emerging processes, including combustion, pyrolysis, gasification, anaerobic digestion, and advanced fermentation. These processes should be applied to a variety of feedstocks, including agricultural residues and other waste biomass streams. Studies on life cycle assessment and the integration of bioenergy into larger energy systems, such as power grids or district heating networks, are especially valuable as they reveal sustainability and operational challenges. Cutting-edge developments are also highlighted, including biohydrogen production, next-generation biorefineries, innovative waste-to-energy systems, and negative emission technologies such as BECCS (bioenergy with carbon capture and storage). Across all these areas, authors are encouraged to address practical considerations of process safety, for example, ensuring safe reactor operation and effective gas handling in biomass conversion facilities, alongside performance improvements.

By advancing biomass energy technologies and systems, this Special Issue aims to contribute to broader societal goals. Bioenergy initiatives inherently support circular economy principles by converting organic waste into valuable energy, and they can spur rural development through new agro-industrial supply chains and green jobs. At the same time, expanding the use of sustainable biomass will directly aid decarbonization efforts by reducing net carbon emissions due to power, heat, and transportation. Interdisciplinary approaches that integrate engineering advancements with techno-economic analysis, policy and regulatory studies, and modelling are highly encouraged. These comprehensive perspectives are essential for identifying and overcoming technical and policy barriers, ensuring that scientific breakthroughs in biomass energy translate into practical solutions for cleaner and more resilient energy systems in the future.

Dr. Carolina Ardila-Suarez
Prof. Dr. Jean-Michel Lavoie
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 250 words) can be sent to the Editorial Office for assessment.

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

  • bioenergy
  • biorefineries
  • thermochemical conversion
  • biochemical conversion
  • waste-to-energy
  • BECCS
  • biohydrogen
  • safety in
  • biomass conversion
  • decarbonization
  • life cycle assessment

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Published Papers (1 paper)

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Review

32 pages, 465 KB  
Review
Energetic Valorization of Leather Solid Waste Through Thermochemical and Biochemical Methods
by Mariasole Gobbo, Riccardo Gallorini and Luca Rosi
Energies 2025, 18(24), 6493; https://doi.org/10.3390/en18246493 - 11 Dec 2025
Viewed by 228
Abstract
The leather industry generates large amounts of solid waste, creating environmental concerns for the presence of hazardous compounds such as chromium. In fact, conventional disposal practices, including landfill and incineration, promote the formation of hexavalent chromium (Cr6+) and polluting emissions. This [...] Read more.
The leather industry generates large amounts of solid waste, creating environmental concerns for the presence of hazardous compounds such as chromium. In fact, conventional disposal practices, including landfill and incineration, promote the formation of hexavalent chromium (Cr6+) and polluting emissions. This work reviews biochemical and thermochemical processes for the energetic valorization of different leather solid wastes, namely untanned, tanned with chromium or vegetable tanning agents, and post-consumer leather. Thermochemical routes, i.e., pyrolysis, gasification, and hydrothermal treatment (HT), can convert leather waste into energy carriers including bio-oil, syngas, and char, while anaerobic digestion (AD) is a biochemical method used to produce biogas. Particularly, pyrolysis is promising for fuel precursors and chromium stabilization, HT suits wet, raw waste, while gasification enables syngas recovery. In AD, microbial chromium inhibition is mitigated through the co-digestion of degradable substrates. This review takes a waste-type-driven rather than process-driven approach to provide new insights into the conversion of leather solid waste into value-added products, showing that the optimal recycling route depends on the waste characteristics. Moreover, these methods have not yet been directly compared in terms of their energy production performance with regard to leather waste. Future work should improve process conditions, evaluate chromium and finishing additive impacts, and assess scalability. Full article
(This article belongs to the Special Issue Biomass: Clean and Renewable Energy Sources)
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