Special Issues

Clean Technologies publishes Special Issues to create collections of papers on specific topics, with the aim of building a community of authors and readers to discuss the latest research and develop new ideas and research directions. Special Issues are led by Guest Editors, who are experts on the topic and all Special Issue submissions follow MDPI's standard editorial process. The journal’s Editor-in-Chief and/or designated Editorial Board Member will oversee Guest Editor appointments and Special Issue proposals, checking their content for relevance and ensuring the suitability of the material for the journal. The papers published in a Special Issue will be collected and displayed on a dedicated page of the journal’s website. Further information on MDPI's Special Issue policies and Guest Editor responsibilities can be found here. For any inquiries related to a Special Issue, please contact the Editorial Office.

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Pollutant Removal from Aqueous Solutions by Adsorptive Biomaterials submission deadline 30 Sep 2025 | 3 articles | Viewed by 8803 | Submission Open
Keywords: adsorptive biomaterials; adsorption mechanisms; organic matter; heavy metals; persistent organic pollutants; characterization methods
Latest Advances in Renewable Energy Technologies
edited by
submission deadline 30 Sep 2025 | 1 articles | Viewed by 1645 | Submission Open
Keywords: clean energy technologies; waste to energy; energy waste management; renewable energy sources; accumulation of energy; modelling of RES grid; energy security
Recovery of Bioactive Compounds from Waste and By-Products submission deadline 20 Oct 2025 | 2 articles | Viewed by 4142 | Submission Open
Keywords: bioactive compounds; waste recovery; by-products utilization; sustainable extraction techniques; circular economy; agricultural waste; industrial by-products; green technologies; nutraceuticals; environmental impact reduction
Green Solvents and Materials for CO2 Capture
edited by Giuseppina Vanga and Claudia Bassano
submission deadline 31 Oct 2025 | 2 articles | Viewed by 3559 | Submission Open
Keywords: green chemistry; CO2 capture; deep eutectic solvent; ionic liquid; amines; solubility of CO2; adsorption of CO2; choline chloride
Nature-Based Solutions for Water Reuse and Contaminant Reduction
edited by , Lurdes Martinez-Landa and Montserrat Folch
submission deadline 30 Nov 2025 | 3 articles | Viewed by 4597 | Submission Open
Keywords: water reuse; sustainable technologies; water quality management; managed aquifer recharge; constructed wetlands; nutrient reduction; contaminants of emerging concern
Biomass Valorization and Sustainable Biorefineries submission deadline 30 Nov 2025 | Viewed by 134 | Submission Open
Keywords: new biorefinery models; wastewater treatment; agro-industrial by-product valorization; lignocellulosic biomass; biocatalytic processes; microbial valorization; biofuels; bioenergy; biochemicals
Hydrogen Production and Carbon Capture Technologies
edited by and
submission deadline 10 Dec 2025 | Viewed by 188 | Submission Open
Keywords: hydrogen production; carbon capture; CO₂ utilization; clean energy systems; techno-economic analysis; electrolysis technologies; decarbonization strategies
Sustainable Biofuel and Biochemical Production from Lignocellulosic Biomass
edited by Nenad Marđetko, and Mario Novak
submission deadline 20 Dec 2025 | 3 articles | Viewed by 4034 | Submission Open
Keywords: lignocellulosic biomass; biofuels; biochemicals; pretreatment methods; fermentation; circular economy; waste valorization
Technology for Sustainable Cities, Companies and Responsible Consumers submission deadline 31 Dec 2025 | Viewed by 232 | Submission Open
Keywords: sustainable city; sustainable mobility and transport; smart technologies for sustainability; Industry 5.0; smart and circular practices and technologies; zero-emission practices and technologies; carbon footprint; digital technologies for reverse logistics; sustainable company; responsible consumer
Pollutant Removal from Wastewater by Microalgae-Based Processes submission deadline 20 Jan 2026 | Viewed by 127 | Submission Open
Keywords: microalgae-based wastewater treatment; pollutant removal; nutrient recovery; biomass valorization; sustainable wastewater management; microalgae– bacteria consortia; industrial and municipal effluents
Carbon Neutrality and Renewable Energy Technologies: Opportunities and Challenges
edited by , Ozge Yuksel Orhan and
submission deadline 31 Jan 2026 | 2 articles | Viewed by 2251 | Submission Open
Keywords: CO2 capture and utilisation; ionic liquids; hybrid solvents; environmental applications; post-combustion; solar energy; wind energy; bioenergy; hydropower; geothermal energy
Valorization of Agrifood By-Products and Innovation in Sustainable Biological Resources submission deadline 28 Feb 2026 | Viewed by 533 | Submission Open
Keywords: circular economy; agrifood; food waste valorization; blue economy; climate-smart agriculture; food security and nutrition; agrifood by-products
Selected Papers from Circular Material Conference 2025 submission deadline 17 Mar 2026 | Viewed by 89 | Submission Open
Keywords: waste management; battery recycling; direct recovery; circular materials; metal extraction; plastic recovery; textile recycling; second life; circular economy; LCA
Multidisciplinary Applications of Life Cycle Assessment (LCA) in the Development, Optimization, and Validation of Sustainable Solutions
edited by , and Ana B. López
submission deadline 31 Mar 2026 | Viewed by 97 | Submission Open
Keywords: sustainability; life cycle assessment; green innovation; decision support tools; impact assessment; life cycle thinking
Innovative Approaches to Sustainable Design, Recovery, and Circular Management of Solid Waste submission deadline 30 Apr 2026 | 2 articles | Viewed by 3423 | Submission Open
Keywords: eco-design; sustainable waste management; circular supply chains; digital twin technology; material flow optimization; waste-to-energy technologies; advanced recycling technologies; circular economy practices; socio-economic– environmental impacts; innovative approaches; circular business models
Application of Life Cycle Assessment (LCA) in Environmental Sustainability
edited by Andrea Mio
submission deadline 31 May 2026 | Viewed by 19 | Submission Open
Keywords: life cycle sssessment (LCA); environmental sustainability; energy technologies; industrial processes; circular economy; eco-design; carbon footprint; sustainable manufacturing; environmental impact; multi-criteria analysis
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