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Sustainable Valorization of Biomass for Clean Energy and High-Value Products

A special issue of Sustainability (ISSN 2071-1050). This special issue belongs to the section "Sustainable Products and Services".

Deadline for manuscript submissions: 24 April 2026 | Viewed by 1529

Special Issue Editor


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Guest Editor
Department of Chemical Engineering, State University of New York College of Environmental Science and Forestry, Syracuse, NY 13210, USA
Interests: biorefineries; biomass conversion; biomaterials; renewable energy

Special Issue Information

Dear Colleagues,

The sustainable valorization of biomass offers a promising route to achieving carbon neutrality, advancing the bioeconomy, and reducing our dependency on fossil resources. This Special Issue, Sustainable Valorization of Biomass for Clean Energy and High-Value Products, aims to present recent developments in environmentally friendly and economically viable approaches for converting biomass into clean energy and high-value bio-based products.

We welcome contributions from diverse fields focusing on innovative technologies for efficient biomass fractionation, conversion, and upgrading, including green solvent systems, catalytic pathways, and advanced pretreatment techniques. The key topics will include the production of biofuels, biochemicals, and functional materials derived from sustainable biomass sources such as lignocellulosic feedstocks, agricultural and forestry residues, and organic waste.

By compiling high-quality contributions from researchers and practitioners across a range of disciplines, this Special Issue seeks to deepen scientific understanding and promote the practical implementation of biomass-based solutions for sustainable development and climate change mitigation.

Dr. Soyeon Jeong
Guest Editor

Manuscript Submission Information

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Keywords

  • biorefinery
  • biomass valorization
  • bioenergy
  • renewable energy
  • bio-based materials
  • biochemicals
  • biomass conversion
  • green solvents

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Published Papers (1 paper)

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Review

28 pages, 2204 KB  
Review
Torrefaction of Lignocellulosic Biomass: A Pathway to Renewable Energy, Circular Economy, and Sustainable Agriculture
by Salini Chandrasekharan Nair, Vineetha John, Renu Geetha Bai and Timo Kikas
Sustainability 2025, 17(17), 7738; https://doi.org/10.3390/su17177738 - 28 Aug 2025
Viewed by 1325
Abstract
Torrefaction, a mild thermochemical pretreatment process, is widely acknowledged as an effective strategy for enhancing the energy potential of lignocellulosic biomass. This review systematically evaluates the technological, environmental, and economic dimensions of lignocellulosic biomass torrefaction with the objective of clarifying its critical role [...] Read more.
Torrefaction, a mild thermochemical pretreatment process, is widely acknowledged as an effective strategy for enhancing the energy potential of lignocellulosic biomass. This review systematically evaluates the technological, environmental, and economic dimensions of lignocellulosic biomass torrefaction with the objective of clarifying its critical role in sustainable energy production and circular economy frameworks. Drawing from recent literature, the review covers process fundamentals, feedstock characteristics and operational parameters—typically 200–300 °C, heating rates below 50 °C per minute, ~1 h residence time, and oxygen-deficient conditions. The impacts of torrefaction on fuel properties, such as increased energy density, improved grindability and pelletability, enhanced storage stability, and reduced microbial degradation are critically assessed along with its contribution to waste valorization and renewable energy conversion. Particular emphasis is placed on the application of torrefied biomass (biochar) in sustainable agriculture, where it can enhance nutrient retention, improve soil quality and promote long-term carbon sequestration. This review identifies an unresolved research gap in aligning large-scale techno-economic feasibility with environmental impacts, specifically concerning the high process energy requirements, emission mitigation and regulatory integration. Process optimization, reactor design and supportive policy frameworks are identified as key strategies that could significantly improve the economic viability and sustainability outcomes. Overall, torrefaction demonstrates substantial potential as a scalable pathway for converting waste agricultural and forest residues into carbon-neutral biofuels. By effectively linking biomass waste valorization with renewable energy production and sustainable agricultural practices, this review offers a practical route to reducing environmental impacts while supporting the broader objectives of the global circular economy. Full article
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