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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Nature-Based Solutions for Water Reuse and Contaminant Reduction
edited by , Lurdes Martinez-Landa and Montserrat Folch
submission deadline 30 Jun 2026 | 3 articles | Viewed by 13924 | Submission Open
Keywords: water reuse; sustainable technologies; water quality management; managed aquifer recharge; constructed wetlands; nutrient reduction; contaminants of emerging concern
Microalgae-Based Systems for Wastewater Treatment and Sludge Management submission deadline 30 Jun 2026 | 2 articles | Viewed by 6774 | Submission Open
Keywords: microalgae-based wastewater treatment; pollutants removal; nutrient recovery; sludge valorization; sludge management; sustainable wastewater management; microalgae– bacteria consortia; industrial and municipal effluents
Technology for Sustainable Cities, Companies and Responsible Consumers submission deadline 30 Jun 2026 | 1 articles | Viewed by 2884 | 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
Life Cycle Thinking in the Era of Digitalization and Artificial Intelligence: Implications for Green Energy and Sustainability
edited by Dimitrios Sotirios Kourkoumpas
submission deadline 30 Jun 2026 | Viewed by 386 | Submission Open
Keywords: life cycle thinking; artificial intelligence (AI); digitalization; sustainable energy transitions; environmental impact evaluation; machine learning; digital twin technologies; circular economy; resource efficiency; predictive modelling
Selected Papers from Circular Materials Conference 2025 submission deadline 15 Jul 2026 | 3 articles | Viewed by 5179 | Submission Open
Keywords: waste management; battery recycling; direct recovery; circular materials; metal extraction; plastic recovery; textile recycling; second life; circular economy; LCA
Recovery of Bioactive Compounds from Waste and By-Products submission deadline 20 Jul 2026 | 2 articles | Viewed by 7977 | 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
Sustainable Biofuel and Biochemical Production from Lignocellulosic Biomass
edited by Nenad Marđetko, and Mario Novak
submission deadline 31 Jul 2026 | 3 articles | Viewed by 11677 | Submission Open
Keywords: lignocellulosic biomass; biofuels; biochemicals; pretreatment methods; fermentation; circular economy; waste valorization
Innovative Advanced Oxidation and Adsorption Technologies for Contaminants of Emerging Concern in Water and Wastewater
edited by Sara P. Azerrad and
submission deadline 31 Jul 2026 | 1 articles | Viewed by 1013 | Submission Open
Keywords: advanced oxidation processes (AOPs); water treatment; wastewater treatment; new catalytic materials; synthesis of nanocomposites for adsorption or oxidation; new adsorbent materials for pollutant removal; optimization strategies; hybrid treatment; coupling AOP and adsorption
Carbon Neutrality and Renewable Energy Technologies: Opportunities and Challenges
edited by , Ozge Yuksel Orhan and
submission deadline 31 Aug 2026 | 3 articles | Viewed by 8064 | 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 30 Sep 2026 | 1 articles | Viewed by 2307 | Submission Open
Keywords: circular economy; agrifood; food waste valorization; blue economy; climate-smart agriculture; food security and nutrition; agrifood by-products
Pollutant Removal from Aqueous Solutions by Adsorptive Biomaterials submission deadline 15 Oct 2026 | 8 articles | Viewed by 35071 | Submission Open
Keywords: adsorptive biomaterials; adsorption mechanisms; organic matter; heavy metals; persistent organic pollutants; characterization methods
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 Oct 2026 | 2 articles | Viewed by 2570 | Submission Open
Keywords: sustainability; life cycle assessment; green innovation; decision support tools; impact assessment; life cycle thinking
Application of Life Cycle Assessment (LCA) in Environmental Sustainability
edited by Andrea Mio
submission deadline 31 Oct 2026 | Viewed by 687 | 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
Biomass Valorization and Sustainable Biorefineries submission deadline 30 Nov 2026 | 3 articles | Viewed by 8105 | Submission Open
Keywords: new biorefinery models; wastewater treatment; agro-industrial by-product valorization; lignocellulosic biomass; biocatalytic processes; microbial valorization; biofuels; bioenergy; biochemicals
Clean Energy Technologies for Decarbonization and Environmental Sustainability
edited by
submission deadline 31 Dec 2026 | 5 articles | Viewed by 7979 | Submission Open
Keywords: clean energy technologies; environmental sustainability; decarbonization; renewable energy sources; waste to energy
Sustainable Polymer Materials for Circular Economy: Recycling, Waste Valorization and Advanced Composites submission deadline 31 Dec 2026 | 1 articles | Viewed by 511 | Submission Open
Keywords: circular economy; sustainable materials; environmental impact; life cycle assessment (LCA); waste valorization; polymer recycling; biodegradable polymers; biocomposites; bio-based materials; natural fiber composites; eco-design; resource efficiency
Eco-Textiles: From Fiber Innovation to Waste Valorization
edited by , Md Abdullah Al Faruque and
submission deadline 31 Jan 2027 | Viewed by 73 | Submission Open
Keywords: fiber; textile; reuse; recycling; sustainable; bioplastic; dyeing and finishing
Green Solvents and Materials for CO2 Capture, 2nd Edition
edited by Giuseppina Vanga
submission deadline 20 Feb 2027 | Viewed by 200 | Submission Open
Keywords: CO2 capture; carbon capture; green solvents; green chemistry; sustainable materials; deep eutectic solvents (DES); ionic liquids; amine-based solvents; CO2 adsorption; CO2 absorption; hybrid sorbents; choline chloride-based solvents; process intensification; energy-efficient CO2 capture; carbon capture; utilization and storage (CCUS)
Selected Papers from 2026 International Conference on Nanobubbles, Nanodroplets, and Their Applications submission deadline 28 Feb 2027 | Viewed by 58 | Submission Open
Keywords: nano gas cavities in liquids; enhanced physical absorptions; enhanced chemical reactions; longterm stability; high surface area; pharmaceutical delivery; enhanced food production
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