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Sustainability
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Sustainable Waste Process Engineering and Biomass Valorization
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Sustainable Waste Process Engineering and Biomass Valorization

A special issue of Sustainability (ISSN 2071-1050). This special issue belongs to the section "Waste and Recycling".

Deadline for manuscript submissions: 1 September 2025 | Viewed by 1412

Special Issue Editors

Prof. Dr. Serhiy Pyshyev

E-Mail Website
Guest Editor
The Department of Chemical Technology of Oil and Gas Processing, Lviv Polytechnic National University, 79013 Lviv, Ukraine
Interests: coal; fuel; biodegradable polymers; bitumen modification; waste tire pyrolysis
Prof. Dr. Denys Miroshnychenko

E-Mail Website
Guest Editor
Department of Oil, Gas, and Solid Fuel Processing Technologies National Technical University Kharkiv Polytechnic Institute, 61002 Kharkiv, Ukraine
Interests: agricultural waste; coal; coke; fuel; polymer
Special Issues, Collections and Topics in MDPI journals
Dr. Bohdan Korchak

E-Mail Website
Guest Editor
The Department of Civil Safety, Lviv Polytechnic National University, 79013 Lviv, Ukraine
Interests: waste oil; waste tires; coal; coke; fuel; bitumen modification

Special Issue Information

Dear Colleagues,

This Special Issue on ‘Sustainable Waste Process Engineering and Biomass Valorization’ focuses on advancing innovative approaches to waste management, specifically through the conversion of waste into valuable resources. The key areas of interest include circular economy principles, waste-to-energy technologies, and sustainable biomass utilization. The scope of this Special Issue encompasses engineering solutions, scientific advancements, and policy frameworks for achieving sustainable development goals by minimizing waste and promoting resource efficiency. The Special Issue will delve into socio-economic and environmental challenges associated with sustainable waste processes and offer integrated approaches combining technology, science, and policy. The purpose of this Special Issue is to bridge gaps in the existing literature by focusing on multidisciplinary approaches to waste valorization and circular economy, linking scientific research with practical solutions. It will supplement research by exploring novel methods for quantifying sustainability, developing monitoring tools, and addressing policies that govern waste management practices. This Special Issue contributes to sustainability by promoting waste reduction, resource recovery, and environmental protection. It addresses key challenges such as reducing greenhouse gas emissions, fostering renewable energy production, and enhancing socio-economic equity through responsible waste management practices. It also encourages an integrated approach, incorporating life cycle assessments, policy evaluations, and technological innovations for achieving long-term sustainable outcomes.

Prof. Dr. Serhiy Pyshyev
Prof. Dr. Denys Miroshnychenko
Dr. Bohdan Korchak
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. Sustainability 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 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

  • circular economy
  • waste-to-energy
  • biomass valorization
  • resource recovery
  • sustainable waste management
  • environmental sustainability
  • renewable energy
  • life cycle assessment
  • socio-economic sustainability
  • green technologies

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Published Papers (2 papers)

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Research

34 pages, 3535 KiB  
Article
Effect of Particle Size and Heating Rate on Formation of Polycyclic Aromatic Hydrocarbons During Corn Cob Biomass Pyrolysis
by Teka Tesfaye Mengesha, Venkata Ramayya Ancha, Abebe Nigussie, Million Merid Afessa and Ramchandra Bhandari
Sustainability 2025, 17(11), 4962; https://doi.org/10.3390/su17114962 - 28 May 2025
Viewed by 362
Abstract
Polycyclic aromatic hydrocarbons (PAHs) in biochar, as opposed to those in pyrolysis liquid products that exit the reactor without adhering to the solid product, are particularly undesirable due to their environmental persistence and potential toxicity. When applied as a soil amendment, biochar containing [...] Read more.
Polycyclic aromatic hydrocarbons (PAHs) in biochar, as opposed to those in pyrolysis liquid products that exit the reactor without adhering to the solid product, are particularly undesirable due to their environmental persistence and potential toxicity. When applied as a soil amendment, biochar containing PAHs poses risks to soil ecosystems and human health. Their formation during pyrolysis presents a significant challenge in biochar production, requiring the optimization of pyrolysis process parameters to minimize PAH content for safe soil amendment applications. This study explored the effects of particle size and heating rate on PAH formation during corn cob pyrolysis. Thermogravimetric analysis (TGA) was employed to heat corn cob powder of varying sample masses from ambient temperature to 550 °C at heating rates of 5, 10, and 20 °C/min. Simultaneously, the Chemical Reaction Engineering and Chemical Kinetics (CRECK) model simulated the pyrolysis of spherical corn cob biomass particles with a radius ranging from 1 to 40 mm, using feedstock chemical compositions as inputs. Tar species generated from the solid biomass model were introduced into a gas-phase batch reactor model to evaluate PAH formation. The results demonstrate that the particle size and heating rate significantly affect PAH formation, shedding light on the complex dynamics of biomass pyrolysis. A single spherical particle with a radius close to 1 mm approximates ideal TGA conditions by minimizing temperature and mass transfer limitations. The CRECK model suggested that a particle radius of 5–10 mm, combined with a low heating rate of 5 °C/min, optimally reduces PAH formation. Future research should focus on using thermogravimetric analysis coupled with gas chromatography–mass spectrometry (TGA-GC-MS) to comprehensively quantify PAH species formation. Full article
(This article belongs to the Special Issue Sustainable Waste Process Engineering and Biomass Valorization)
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26 pages, 14530 KiB  
Article
Obtaining New Materials from Liquid Pyrolysis Products of Used Tires for Waste Valorization
by Serhiy Pyshyev, Bohdan Korchak, Denis Miroshnichenko, Volodimir Lebedev, Alla Yasinska and Yurii Lypko
Sustainability 2025, 17(9), 3919; https://doi.org/10.3390/su17093919 - 26 Apr 2025
Cited by 1 | Viewed by 575
Abstract
The innovative recycling of waste tires into fuel is essential for promoting sustainable development, enhancing waste valorization, and advancing waste-to-energy technologies. For the processing of fr. ≤ 200 °C, separated from the liquid products of the pyrolysis process of waste tires, polycondensation with [...] Read more.
The innovative recycling of waste tires into fuel is essential for promoting sustainable development, enhancing waste valorization, and advancing waste-to-energy technologies. For the processing of fr. ≤ 200 °C, separated from the liquid products of the pyrolysis process of waste tires, polycondensation with formaldehyde and extraction with a polar solvent (N-methyl-2-pyrrolidone) was used. Due to the sequential application of these processes, a raffinate product is produced that contains significantly fewer undesirable compounds, such as reactive unsaturated hydrocarbons and aromatics, which can negatively affect gasoline. Additionally, this raffinate demonstrates chemical stability during storage. Due to its operational properties, the obtained raffinate can serve as a high-quality component for gasoline production, which is advisable when mixed with low-octane gas condensate. As a result of compounding, Euro 4 gasoline is obtained with an octane number equal to 93 according to the experimental method. The possibility of effectively using the extract (concentrate of aromatic and unsaturated compounds) as a plasticizer for waterproofing mastic was shown. Overall, the valorization of waste tire pyrolysis processing contributes to waste reduction and is consistent with promoting sustainable industrial innovation by replacing primary petrochemical feedstocks with secondary feedstocks and supporting the development of alternative energy sources. Full article
(This article belongs to the Special Issue Sustainable Waste Process Engineering and Biomass Valorization)
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