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Emission Control and Sustainable Energy
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Emission Control and Sustainable Energy

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

Deadline for manuscript submissions: 25 June 2026 | Viewed by 2243

Editor

Prof. Dr. Ewa Brągoszewska

E-Mail Website
Guest Editor
Department of Technologies and Installations for Waste Management, Silesian University of Technology, 18 Konarskiego St., 44-100 Gliwice, Poland
Interests: air quality; emission control
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Air quality degradation and the growing demand for sustainable energy are among the most critical environmental issues facing modern societies. The interconnections between air pollution, waste management, and renewable energy production are increasingly important for developing effective mitigation and adaptation strategies. This Special Issue aims to present recent advances in understanding the sources and impacts of air pollution, as well as innovative technological and policy solutions supporting the transition toward cleaner and more sustainable energy systems. We welcome contributions that explore the following:

  • Emission reduction technologies and circular economy approaches.
  • Biomass and waste-to-energy conversion pathways.
  • Emission monitoring, assessment, and modelling in energy systems.
  • Emission sources and emerging by-products from energy conversion processes.
  • Socio-economic and policy drivers for the implementation of emission control and sustainable energy technologies.

The Special Issue encourages interdisciplinary research combining environmental engineering, energy systems, and environmental and energy policy perspectives. It provides a platform for scientists, engineers, and policymakers to exchange knowledge and develop integrated approaches for reducing emissions and enhancing sustainability and promoting sustainable energy use.

Prof. Dr. Ewa Brągoszewska
Guest Editor

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-anonymized 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

  • air pollution
  • sustainable energy
  • emission reduction
  • waste-to-energy
  • renewable energy
  • circular economy

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Published Papers (3 papers)

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Research

23 pages, 3451 KB  
Article
Valorization of Waste Oxytree Biomass for Impregnated Solid Fuel Production—Process Assessment and Fuel Property Evaluation
by Max Lewandowski and Krzysztof Pikoń
Energies 2026, 19(8), 1817; https://doi.org/10.3390/en19081817 - 8 Apr 2026
Viewed by 553
Abstract
The increasing generation of organic and liquid wastes calls for sustainable strategies to convert residues into valuable energy resources. This study investigates waste Oxytree biomass (Paulownia Clon In Vitro 112®) as a sorbent for producing impregnated solid fuels from selected liquid [...] Read more.
The increasing generation of organic and liquid wastes calls for sustainable strategies to convert residues into valuable energy resources. This study investigates waste Oxytree biomass (Paulownia Clon In Vitro 112®) as a sorbent for producing impregnated solid fuels from selected liquid wastes, including used cooking oil, spent mineral oil, and pyrolysis condensate, targeting industrial energy applications. Oxytree biomass was selected due to its high and predictable yield, uniform composition, and favorable physical properties compared to conventional lignocellulosic residues such as pine sawdust. Biomass and liquid wastes were characterized in terms of fuel properties and elemental composition. Several empirical combinations of sorbent and liquid fractions were tested to optimize homogeneity and fuel quality, resulting in a final composition of sorbent:used cooking oil:used machine oil:pyrolytic condensate equal to 3:1:1:3. The temporal stability of this selected fuel was verified over 24 h, 3 days, and 1 week. The resulting fuels exhibited an energy value of approximately 15 MJ/kg, low ash content (<1%), and minimal concentrations of chlorine and sulfur (<0.08%). Overall, the findings demonstrate that Oxytree waste biomass can serve as an effective sorbent for integrating problematic liquid wastes into solid fuels, providing a practical route for waste valorization and supporting circular economy principles, and establishing a foundation for further research on sustainable energy applications of biomass and industrial residues. Full article
(This article belongs to the Special Issue Emission Control and Sustainable Energy)
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18 pages, 1733 KB  
Article
Advancements in Deep Purification of Gas from Biomass Gasification Using a Dry Method with an Activated Carbon Bed
by Mateusz Kochel, Ewa Brągoszewska, Agata Wajda, Tomasz Billig and Tomasz Iluk
Energies 2026, 19(7), 1755; https://doi.org/10.3390/en19071755 - 3 Apr 2026
Viewed by 555
Abstract
Energy transformation requires the development of distributed renewable energy, in which heat and electricity are produced by small units or production facilities for local needs. One favorable development direction is the thermal conversion of biomass, which is classified as a renewable energy source. [...] Read more.
Energy transformation requires the development of distributed renewable energy, in which heat and electricity are produced by small units or production facilities for local needs. One favorable development direction is the thermal conversion of biomass, which is classified as a renewable energy source. Due to the variability of its physicochemical properties, gasification technology offers a flexible and competitive alternative to combustion processes. One of the key challenges associated with biomass gasification is the relatively high concentration of contaminants in the raw producer gas. This article presents the results of pilot studies on producer gas purification using activated carbon fixed-bed adsorption. The pilot studies focused on assessing the effectiveness of this technology in the context of purifying producer gas from biomass gasification installations. During the conducted experimental study, approximately 2.2 kg of contaminants were adsorbed. The calculated unit mass of adsorbed contaminants per unit volume of producer gas was 11.7 g/Nm3. The removal efficiency of contaminants was 61.5% for tar compounds and 83.6% for volatile organic compounds. A 100% removal efficiency was achieved for the analyzed sulfur compounds (H2S, COS, and CH3SH). The research showed positive effects of adsorption for final producer gas purification, supporting further experimental research. Full article
(This article belongs to the Special Issue Emission Control and Sustainable Energy)
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28 pages, 1916 KB  
Article
Valorization of Corncob and Khat Waste into Biochar via Decentralized Multi-Purpose Pyrolysis Stoves
by Tarekegn Limore Binchebo, Krzysztof Pikoń, Venkata Ramayya Ancha, Teka Tesfaye Mengesha, Solomon Kebede Asefa, Defar Getahun Gizachew and Mamo Abawalo
Energies 2026, 19(6), 1461; https://doi.org/10.3390/en19061461 - 13 Mar 2026
Viewed by 805
Abstract
The escalating global waste crisis necessitates sustainable valorization strategies, with biochar production emerging as a promising solution for converting organic residues into a carbon-rich material. This study evaluated biochar derived from corncob and khat waste pyrolyzed using allo-thermal and auto-thermal multi-purpose stoves. Biochar [...] Read more.
The escalating global waste crisis necessitates sustainable valorization strategies, with biochar production emerging as a promising solution for converting organic residues into a carbon-rich material. This study evaluated biochar derived from corncob and khat waste pyrolyzed using allo-thermal and auto-thermal multi-purpose stoves. Biochar was fractionated into four particle sizes (>2 mm, 1–2 mm, 0.6–1 mm, and <0.6 mm) and characterized for ash content, pH, and electrical conductivity (EC). Results demonstrated that the auto-thermal stove, operating at higher temperatures (up to 800 °C), consistently produced biochar with greater ash content (khat: 12–19%; corncob: 11–14%), alkaline pH (9.2–10.0), and significantly higher EC compared to the allo-thermal stove (maximum 350 °C). EC values ranged from 0.38 mS/cm (coarse allo-thermal corncob) to 6.6 mS/cm (fine auto-thermal khat), with auto-thermal biochar exhibiting EC values 5–10 times higher than their allo-thermal counterparts. khat waste consistently yielded biochar with higher ash content, pH, and EC than corncob, reflecting its richer mineral composition. Particle size fractionation revealed that pH and EC increased progressively with decreasing particle size across all treatments, with the finest fraction (<0.6 mm) showing the highest values. For auto-thermal khat, EC increased from 2.43 mS/cm (>2 mm) to 6.6 mS/cm (<0.6 mm). This study demonstrates that decentralized biochar production using multi-purpose stoves can yield materials with tunable properties, and that khat waste—an underutilized regional resource—shows particular promise for producing high-ash, high-EC biochar suitable for acidic soil amendment. Full article
(This article belongs to the Special Issue Emission Control and Sustainable Energy)
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