Special Issues

Processes 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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Green Photocatalysis for a Sustainable Future
edited by Lei Cheng, Yang Li and Jian Yang
submission deadline 14 May 2026 | 2 articles | Viewed by 2628 | Submission Open
Keywords: photocatalysts; homogeneous photocatalysis; heterogeneous photocatalysis; solar energy generation; value-added chemical generation; biomass-related conversion; artificial photosynthesis
(This special issue belongs to the Section Catalysis Enhanced Processes)
Advancements in Low-Dimensional Materials: Focus on Detailed Methodologies submission deadline 15 May 2026 | 8 articles | Viewed by 11392 | Submission Open
Keywords: low-dimensional materials; quantum dot; carbon nanotube; graphene; transition-metal dichalcogenides; spintronics; valleytronics; twistronics; topological insulators; photonics
(This special issue belongs to the Section Materials Processes)
Preparation, Characterization and Application of Heterogeneous Catalysts submission deadline 15 May 2026 | 5 articles | Viewed by 9191 | Submission Open
Keywords: metallic catalysts; intermetallics in catalysis; supported metallic catalysts; oxide and mixed oxide catalysts; zeolite catalysts; acid– base catalysis; bifunctional catalysis; environmental catalysis; biocatalysis; electrocatalysis; photocatalysis; catalysts for hydrogen production; catalysts for C1 chemistry; kinetic modelling of heterogeneously catalysed reactions
(This special issue belongs to the Section Catalysis Enhanced Processes)
Advancements in Photovoltaic Technologies: Innovations for Enhanced Energy Conversion and Efficiency submission deadline 15 May 2026 | 4 articles | Viewed by 3166 | Submission Open
Keywords: photovoltaic energy conversion; high-efficiency solar cells; emerging PV materials; thin-film photovoltaics; smart grid integration with PV; PV system advancements; scalable solar technologies
(This special issue belongs to the Section Energy Systems)
Extraction, Modification, Synthesis, Characterization, and Application of Natural and Biobased Polymer Materials
edited by
submission deadline 15 May 2026 | 2 articles | Viewed by 3055 | Submission Open
Keywords: natural polymers; cellulose; chitosan; chitin; starches; gums; PLA; biobased polymer; bioplastic; reinforced polymers; natural fiber; agro-residues; biodegradable polymers
(This special issue belongs to the Section Materials Processes)
Advances in Renewable and Sustainable Engineering from the 6th International Conference on Sustainable Engineering Techniques
edited by , Wadhah Amer Hatem and
submission deadline 15 May 2026 | 2 articles | Viewed by 2471 | Submission Open
Keywords: renewable energy; solar energy; sustainability; energy efficiency; green technologies; waste management; smart energy systems; water treatment; green infrastructure and buildings; energy storage systems; affordable energy
(This special issue belongs to the Section Sustainable Processes)
Product Design and the Optimization of Technologies for Manufacturing Processes
edited by , Rodica Sturza and
submission deadline 15 May 2026 | 3 articles | Viewed by 2432 | Submission Open
Keywords: manufacturing optimization; product and process design; engineering processes; environmental engineering; sustainability and circular economy; mechatronics and robotics; chemical processes; food engineering; energy processes; information systems and technology
(This special issue belongs to the Section Manufacturing Processes and Systems)
Development of Advanced Drilling Engineering
edited by
submission deadline 15 May 2026 | 4 articles | Viewed by 1904 | Submission Open
Keywords: advanced drilling engineering; deep-water/deep-earth drilling; unconventional oil and gas drilling; intelligent drilling technology
(This special issue belongs to the Section Energy Systems)
Advances in Heat Transfer and Thermal Energy Storage Systems
edited by , José Alfredo Hernández Pérez and David Juárez Romero
submission deadline 15 May 2026 | 1 articles | Viewed by 1546 | Submission Open
Keywords: thermal energy storage; non renewable energy; renewable energy; mechanical energy storage; chemical energy storage; electric energy storage; electrochemical energy storage
(This special issue belongs to the Section Energy Systems)
Control, Optimization and Scheduling of Smart Distribution Grids submission deadline 15 May 2026 | 1 articles | Viewed by 1162 | Submission Open
Keywords: planning and operation; distribution networks; smart grids; microgrids; modeling and simulation; optimization; distributed energy resources; power electronics and electric drives; renewable energy and energy storage; electric vehicles; demand response; reliability and resilience
(This special issue belongs to the Section Energy Systems)
Process Design and Performance Analysis of Heat Pumps
edited by Tiago de Freitas Paulino, Luiz Machado and
submission deadline 15 May 2026 | 2 articles | Viewed by 1029 | Submission Open
Keywords: heat pump  ; design  ; performance analysis  ; renewable energy  ; thermal energy storage
(This special issue belongs to the Section Energy Systems)
Preparation of Semiconductor Materials and Their Application in Photoelectronic Devices
edited by Weixin Ouyang
submission deadline 15 May 2026 | 1 articles | Viewed by 860 | Submission Open
Keywords: semiconductor materials; photoelectronic devices; charge carriers; material preparation; device assembly; solar cells; photodetectors; LEDs; lasers
(This special issue belongs to the Section Materials Processes)
Research Trends in Electrochemical Technology for Sustainable Environmental Applications
edited by Martín Muñoz-Morales and Ester López-Fernández
submission deadline 15 May 2026 | Viewed by 552 | Submission Open
Keywords: sustainable materials; waste treatment; electrochemical techniques; novel electrodes; electrochemical sensors; pollutants; oxidation; reduction
(This special issue belongs to the Section Chemical Processes and Systems)
Advances in the Design, Synthesis and Applications of Nanostructured Materials
edited by Andrés Ramírez Ramírez, María Eugenia González and Mara Cea
submission deadline 15 May 2026 | 1 articles | Viewed by 421 | Submission Open
Keywords: nanostructures; energy; environment; catalyst; carbon-biobased nanostructures; nanocomposite materials; supercapacitors
(This special issue belongs to the Section Materials Processes)
Application of Machine Learning in Geo-Energy Exploration Processes
edited by Zhi Zhong
submission deadline 15 May 2026 | Viewed by 229 | Submission Open
Keywords: machine learning; deep learning; subsurface energy systems; reservoir characterization; seismic interpretation; carbon capture storage; enhanced recovery; sustainable energy transition; digital transformation; space geo-energy
(This special issue belongs to the Section Energy Systems)
Process Engineering in Electrified Roadway Systems: Design, Integration, and Sustainability submission deadline 15 May 2026 | 1 articles | Viewed by 190 | Submission Open
Keywords: electrified pavement; wireless charging; material and structure design; performance evaluation; life cycle analysis
(This special issue belongs to the Section Process Control and Monitoring)
Advances in Computational Chemistry for the Molecule/Material Design and Chemical Process Applications
edited by and Federico Palazzetti
submission deadline 15 May 2026 | Viewed by 184 | Submission Open
Keywords: theoretical methods for computational chemistry; computational chemistry and drug design; computational chemistry and the design of new materials; computational chemistry and green chemistry; computational study of chemical reactions; computational chemistry and machine learning
(This special issue belongs to the Section Chemical Processes and Systems)
Discrete Element Method (DEM) and Its Engineering Applications
edited by Xiaoxing Liu
submission deadline 15 May 2026 | Viewed by 145 | Submission Open
Keywords: discrete element method (DEM); granular materials; particle-scale mechanics; contact force models; particle morphology; DEM development; engineering processes; multiscale modeling; granular rheology; particle mixing; particle packing; particle transportation
(This special issue belongs to the Section Particle Processes)
Biorefining and Circular Economy: Innovative Processes for Waste Valorization
edited by Cristiano E.R. Reis and
submission deadline 15 May 2026 | Viewed by 97 | Submission Open
Keywords: biorefinery; circular economy; waste valorization; process integration; process intensification; agro-industrial residues; techno-economic analysis (TEA); life cycle assessment (LCA); hybrid biocatalysis– thermocatalysis; digital twins and process modeling
(This special issue belongs to the Section Energy Systems)
Metal Extraction and Recovery Technologies from E-Waste
edited by and
submission deadline 15 May 2026 | Viewed by 87 | Submission Open
Keywords: E-waste recycling; metal extraction; hydrometallurgy; bioleaching; pyrometallurgy; mechanochemistry; sustainable recycling; waste valorization; techno-economic analysis
(This special issue belongs to the Section Manufacturing Processes and Systems)
Next-Generation Multifunctional Materials: Design and Applications in Healthcare, Energy and Sustainability
edited by Congjie Wei and
submission deadline 15 May 2026 | Viewed by 74 | Submission Open
Keywords: multifunctional materials; advanced material design; healthcare applications; energy storage and conversion; sustainable materials; machine learning
(This special issue belongs to the Section Chemical Processes and Systems)
State-of-the-Art Coordination Polymers: Synthesis and Multifunctional Applications
edited by Ravi Arukula and
submission deadline 19 May 2026 | Viewed by 51 | Submission Open
Keywords: coordination polymers; synthesis; applications; catalysis; gas storage; sensing; drug delivery; remediation; modeling
(This special issue belongs to the Section Chemical Processes and Systems)
Application of Biochar in Environmental Research
edited by
submission deadline 20 May 2026 | 9 articles | Viewed by 18232 | Submission Open
Keywords: biochar; waste management; wastewater and water treatment; pyrolysis; fertilization; composting; anaerobic digestion; heterogenous catalysis; nanomaterials
(This special issue belongs to the Section Environmental and Green Processes)
Supercritical Technology Applied to Food, Pharmaceutical, Chemical and Energy Industries—2nd Edition
edited by
submission deadline 20 May 2026 | 6 articles | Viewed by 17908 | Submission Open
Keywords: bioactive compounds; supercritical technology; supercritical fluid extraction; high pressure phase equilibria; particle formation assisted with supercritical fluids and compressed liquids; application of supercritical technology-based products in foods; pharmaceuticals; cosmetics and textiles; life cycle analysis of processes assisted with supercritical technology; process intensification with supercritical technology; analytical methods hyphenated with supercritical fluids and pressurized liquids; accelerated solvent extraction; chemical reactions assisted with supercritical fluids; characterization and biological activity of products processed with supercritical fluids and pressurized liquids; gasification assisted with supercritical fluids; sterilization assisted with supercritical fluids; impregnation assisted with supercritical fluids; polymer processing assisted with supercritical fluids; power generation with supercritical technology
(This special issue belongs to the Section Food Process Engineering)
Applications of Smart Microgrids in Renewable Energy Development
edited by Hui Li, Kuan Zhang and Yikui Liu
submission deadline 20 May 2026 | 15 articles | Viewed by 17655 | Submission Open
Keywords: microgrids; renewable energy; planning; energy management; energy sharing; uncertainty
(This special issue belongs to the Section Energy Systems)
Sustainable Techniques for Extraction and Isolation of Natural Bioactive Compounds
edited by , Mariana Silva López and Teodoro Suárez Diéguez
submission deadline 20 May 2026 | 6 articles | Viewed by 10939 | Submission Open
Keywords: natural products; purification; pressurized liquid extraction; supercritical fluid extractions; ultrasound-assisted extraction; advanced extraction; solid– liquid extraction; sistainable extraction; eutectic solvents
(This special issue belongs to the Section Separation Processes)
Industry 4.0 and Industry 5.0: Simulators and Algorithms in Manufacturing Processes and Systems
edited by Wei Guo and Jiewu Leng
submission deadline 20 May 2026 | 8 articles | Viewed by 8772 | Submission Open
Keywords: Industry 4.0; Industry 5.0; smart manufacturing; digital twin; human– machine collaboration; industrial simulators; AI algorithms; cyber-physical systems (CPS); predictive maintenance; federated learning
(This special issue belongs to the Section Manufacturing Processes and Systems)
Novel Applications of Zeolites in Adsorption Processes submission deadline 20 May 2026 | 4 articles | Viewed by 7424 | Submission Open
Keywords: zeolite; adsorption; modification; kinetic; environmental protection; synthesis
(This special issue belongs to the Section Chemical Processes and Systems)
Recent Developments in Low-Carbon and Efficient Extraction Technologies of Deep Unconventional Reservoirs
edited by Haichao Wang, Zhenzhi Wang, and
submission deadline 20 May 2026 | 10 articles | Viewed by 7253 | Submission Open
Keywords: deep energy; coalbed methane; shale oil; CO2 displacement technology; geological carbon dioxide storage technology
(This special issue belongs to the Section Energy Systems)
Modeling and Optimization for Green Energy Materials: Machine Learning, Conventional, and Hybrid Approaches
edited by and Viatcheslav Kafarov
submission deadline 20 May 2026 | 4 articles | Viewed by 3063 | Submission Open
Keywords: green energy materials; machine learning; modeling and simulation of processes; sustainable process engineering; data-driven process engineering; digital twins
(This special issue belongs to the Section Energy Systems)
Development of Innovative Processes in Food Engineering submission deadline 20 May 2026 | 2 articles | Viewed by 2289 | Submission Open
Keywords: innovative food processing; non-thermal technologies; functional foods; bioactive encapsulation; food safety and quality; sustainable food engineering; alternative protein processing
(This special issue belongs to the Section Food Process Engineering)
Advances in Metal Catalyst: Synthesis and Application
edited by and
submission deadline 20 May 2026 | 1 articles | Viewed by 979 | Submission Open
Keywords: catalyst design and engineering; metal-based catalysts; nanostructured catalysts; single-atom catalysts; heterogeneous catalysis; electrocatalysis and thermocatalysis; advanced characterization; system design and integration
(This special issue belongs to the Section Materials Processes)
Advanced Low-Carbon Energy Processes: Engineering, Optimization, and System Integration for Carbon Neutrality
edited by Shuai Guo, Chang Xing, Zhifeng Hu and
submission deadline 20 May 2026 | 3 articles | Viewed by 851 | Submission Open
Keywords: carbon neutrality; low-carbon energy; renewable energy; carbon capture utilization; hydrogen energy; energy storage; traditional energy decarbonization
(This special issue belongs to the Section Chemical Processes and Systems)
Advances in Optimal Operation of Modern Power Systems for Flexibility Enhancement
edited by Wennan Zhuang, Xia Shen, Jiayong Li and Guangsheng Pan
submission deadline 20 May 2026 | 4 articles | Viewed by 838 | Submission Open
Keywords: modern power system; flexibility enhancement; renewable energy integration; multi-energy coupling; data-driven optimization; distributed control; energy storage system; flexibility market
(This special issue belongs to the Section Energy Systems)
New Research on Oil and Gas Equipment and Technology, 2nd Edition submission deadline 20 May 2026 | 2 articles | Viewed by 799 | Submission Open
Keywords: oil and gas equipment; design; modeling; analysis; evaluation
(This special issue belongs to the Section Energy Systems)
Advances in Improving Efficiency, Decarbonization, Modeling and Intelligent Operations of Modern Oilfield Development
edited by Xiang Wang and
submission deadline 20 May 2026 | 2 articles | Viewed by 783 | Submission Open
Keywords: reservoir modeling and numerical simulation; chemical enhanced oil recovery (chemical EOR); digital oilfield and digital transformation; multiphase flow in porous media; real-time reservoir monitoring and control; mature field revitalization; cybersecurity in operational technology systems
(This special issue belongs to the Section Energy Systems)
Synthesis and Characterization of Various Nanomaterials Based on Graphene Derivatives submission deadline 20 May 2026 | Viewed by 399 | Submission Open
Keywords: graphene derivatives; graphene oxide; synthesis and preparation of graphene derivatives; chrecrectrization of graphene derivatives; functionalization graphene derivatives; doping; catalytic applications; sensor applications; electronic applications; energy storage
(This special issue belongs to the Section Materials Processes)
Process Metallurgy: From Theory to Application, 2nd Edition
edited by
submission deadline 20 May 2026 | 1 articles | Viewed by 290 | Submission Open
Keywords: process metallurgy; welding metallurgy; flux/slag properties; calphad; materials processing optimization; flux/slag crystallization; thermodynamics; kinetics; metal/slag recycling; iron and steelmaking; continuous casting; composition control
(This special issue belongs to the Section Manufacturing Processes and Systems)
Machine-Learning-Assisted Intelligent Processing and Optimization of Complex Systems, 2nd Edition
edited by and Manman Yuan
submission deadline 20 May 2026 | Viewed by 211 | Submission Open
Keywords: intelligent processing; machine learning; optimization; complex system; control
(This special issue belongs to the Section AI-Enabled Process Engineering)
Advances in Alternative Fuel Engines and Combustion Technology
edited by Pengbo Dong, Dongsheng Dong and Fuxing Wei
submission deadline 20 May 2026 | Viewed by 160 | Submission Open
Keywords: alternative fuel; combustion; emission; engine
(This special issue belongs to the Section Chemical Processes and Systems)
Emerging Organic Synthesis Approaches for Functional Nanomaterials and Organic Compounds in Supercapacitor Applications
edited by Prabin Rai and
submission deadline 22 May 2026 | Viewed by 129 | Submission Open
Keywords: organic synthesis; functional nanomaterials; supercapacitors; electrode materials and energy storage
(This special issue belongs to the Section Chemical Processes and Systems)
Advanced Functionally Graded Materials
edited by and Suhas Alkunte
submission deadline 25 May 2026 | 5 articles | Viewed by 21788 | Submission Open
Keywords: functionally graded materials; additive manufacturing; mechanical behavior; sustainability; material science
(This special issue belongs to the Section Materials Processes)
Fault Diagnosis Technology in Machinery Manufacturing submission deadline 25 May 2026 | 4 articles | Viewed by 4848 | Submission Open
Keywords: fault detection and diagnosis technology for machine manufacturing; vibration analysis for machine manufacturing; advances diagnostics techniques for machine manufacturing; neural networks methods for machine manufacturing; fault diagnosis methods for smart manufacturing; IoT-based monitoring and diagnostics of manufacturing systems; remote control and detection and detection technology for intelligent manufacturing; machine learning methods for machine manufacturing; applied artificial intelligence for fault detection and diagnosis technology for machine manufacturing; operational mode analysis for fault diagnostics and diagnostic for machine manufacturing
(This special issue belongs to the Section Manufacturing Processes and Systems)
Advances in Engineering Thermodynamics and Numerical Simulation
edited by Érick-G. Espinosa-Martínez and Sergio Quezada-García
submission deadline 25 May 2026 | 1 articles | Viewed by 1854 | Submission Open
Keywords: thermodynamics; numerical methods; simulation; heat transfer; computational analysis
(This special issue belongs to the Section Chemical Processes and Systems)
Advances in Plasma Technology for Environmental and Energy Process Engineering
edited by , and Lakshminarayana Rao
submission deadline 25 May 2026 | 2 articles | Viewed by 1069 | Submission Open
Keywords: wastewater; plasma discharges; plasma-activated water; plasma processing; energy; reforming of hydrocarbons
(This special issue belongs to the Section Environmental and Green Processes)
Sustainable Processing and Utilization of Dairy Products
edited by Yaowei Liu, and
submission deadline 25 May 2026 | Viewed by 67 | Submission Open
Keywords: emerging technology; novel dairy products; AI-based quality control; energy efficiency; nutrition
(This special issue belongs to the Section Food Process Engineering)
Recent Developments in Biomaterials and Biological Processes submission deadline 25 May 2026 | Viewed by 43 | Submission Open
Keywords: biomaterials; tissue regeneration; drug delivery; biofabrication; sustainable agriculture; agrowaste-derived biomaterials; cell– material interactions
(This special issue belongs to the Section Biological Processes and Systems)
The Role of Analog Electronics: From Energy Systems to Food Production submission deadline 25 May 2026 | Viewed by 34 | Submission Open
Keywords: biosensor and instrumentation; precision agriculture; circuits and crops; analog designs for remote monitoring; weed control using electricity
(This special issue belongs to the Section Energy Systems)
Advances in Extraction and Characterization of Functional Properties of Bioactive Compounds Obtained from Food Processing
edited by Arely León-López and
submission deadline 26 May 2026 | 4 articles | Viewed by 8896 | Submission Open
Keywords: food process; bioactive compounds; functional activity; alternative technologies; traditional methods; sources of bioactive compounds
(This special issue belongs to the Section Food Process Engineering)
Applications of Plasma Technology in Food and Environment
edited by Brenda L. Fina, Leandro Prevosto and
submission deadline 26 May 2026 | Viewed by 96 | Submission Open
Keywords: non-thermal plasma; thermal plasma; plasma activated water; environmental applications; food control; pollutant degradation; sustainable processing; water and air purification; resource recovery; energy recovery
(This special issue belongs to the Section Environmental and Green Processes)
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