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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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Recent Technologies on CO₂ Capture and (Photo) Electrochemical Utilization

edited by

Guillermo Díaz-Sainz

Haoshui Yu

, Ning Qi and

Anup Paul

submission deadline 10 Aug 2025 | 1 articles | Viewed by 1788 | Submission Open

Keywords: CO2 capture; CO2 utilization; modeling; simulation; and optimization; life-cycle assessment; technoecomomic analysis.

(This special issue belongs to the Section Energy Systems)

Addressing Environmental Issues with Advanced Oxidation Technologies

edited by Maria Alejandra Ayude and Lucila Inés Doumic

submission deadline 10 Aug 2025 | 1 articles | Viewed by 1399 | Submission Open

Keywords: advanced oxidation technologies (AOTs); wastewater treatment; organic and inorganic pollutants; environmental impact; process efficiency and optimization

(This special issue belongs to the Section Environmental and Green Processes)

Advances in Interactions of Polymers in Emulsion Systems

edited by Jelena Milinković Budinčić,

Ljiljana Đekić

and

Lidija B. Petrović

submission deadline 10 Aug 2025 | 1 articles | Viewed by 1013 | Submission Open

Keywords: polymer– surfactant interactions; polymer– polymer interactions; emulsions; adsorption on the interface; polymers; biopolymers; disperse systems; interfacial properties

(This special issue belongs to the Section Chemical Processes and Systems)

Design, Inspection and Repair of Oil and Gas Pipelines

edited by Wei Liang

submission deadline 10 Aug 2025 | 1 articles | Viewed by 959 | Submission Open

Keywords: inherent safety design; load conditions and stress analysis; metal loss inspection techniques; crack; corrosion; or leak detection; intelligent monitoring and prognostics; pipeline and facility integrity; deepwater pipeline design; inspection; or repair; riser replacement or repairs; pipeline valve repairs or change-outs; deepwater maintenance and repair

(This special issue belongs to the Section Energy Systems)

Research on Water Pollution Control and Remediation Technology

edited by

Ahmed Moufti

submission deadline 10 Aug 2025 | 1 articles | Viewed by 679 | Submission Open

Keywords: water pollution; remediation technology; new technologies in environmental; sciences; remediation; environmental waste

(This special issue belongs to the Section Environmental and Green Processes)

Development and Application of Microalgae and Microalgae–Bacteria Biotechnologies

edited by

Oskar A. Palacios

, Francisco J. Choix and

Jony Ramiro Torres Velazquez

submission deadline 10 Aug 2025 | Viewed by 233 | Submission Open

Keywords: microalga– bacteria; microalgae biotechnology; pollution remotion by microalgae; microalga biomass characterization; stress mitigation in microalga; microalga growth-promoting bacteria

(This special issue belongs to the Section Biological Processes and Systems)

Chromatographic Techniques in Food Industry Processes

edited by

Fouad EL Mansouri

and Jamal Brigui

submission deadline 10 Aug 2025 | Viewed by 186 | Submission Open

Keywords: food chemistry; natural products ; antioxidants ; polyphenols ; chromatography ; spectroscopy ; mass spectrometry ; extraction ; sample preparation

(This special issue belongs to the Section Food Process Engineering)

Advances in Metallurgical Processing and Involved Separation Techniques

edited by

Amilton Botelho Junior

submission deadline 10 Aug 2025 | Viewed by 175 | Submission Open

Keywords: hydrometallurgy; pyrometallurgy; recycling; energy transition

(This special issue belongs to the Section Separation Processes)

Bioenergy, Green Chemistry and Biorefinery: Challenges and Perspectives on Circular Economy and Sustainability

edited by

Maria Rios

and

Glauber Cruz

submission deadline 10 Aug 2025 | Viewed by 175 | Submission Open

Keywords: biomass; biofuels; and biomaterials; circular economy; biorefinery; and biowaste treatment technologies; thermal engineering and applied thermodynamics; environmental pollution and pollutant emissions; renewable technologies; numerical simulation; energy utilization; carbon capture; utilization; and storage; urban waste management

(This special issue belongs to the Section Chemical Processes and Systems)

Evaluation and Utilization of Antioxidant Activity in Food Products

edited by

Grzegorz Bartosz

and

Izabela Sadowska-Bartosz

submission deadline 10 Aug 2025 | Viewed by 174 | Submission Open

Keywords: antioxidant; food; FRAP; CUPRAC; PRAC; ABTS; DPPH; polyphenols; carotenoids; analysis

Advances in Renewable Energy Systems (2nd Edition)

edited by

Ferdinando Salata

, Virgilio Ciancio and Jacopo Dell’Olmo

submission deadline 15 Aug 2025 | 10 articles | Viewed by 15783 | Submission Open

Keywords: alternative energy sources; eco-compatible energy end uses; availability of renewable energy systems; economic impacts of renewable energy; climate change

(This special issue belongs to the Section Energy Systems)

Multiscale Modeling and Numerical Simulation of Multiphase Flow

edited by

Yupeng Xu

Xiaogang Shi

and

Lei Yang

submission deadline 15 Aug 2025 | 3 articles | Viewed by 7005 | Submission Open

Keywords: multiphase flow; particle; numerical simulation; heat and mass transfer; multiscale models

(This special issue belongs to the Section Process Control and Monitoring)

Recent Advances in Surface Engineering and Coating Technologies in Manufacturing Processes

edited by

Miguel Angel Selles Canto

, Kuniaki Dohda, Steven Schmid and

Samuel Sanchez Caballero

submission deadline 15 Aug 2025 | 3 articles | Viewed by 1856 | Submission Open

Keywords: tribology; manufacturing; joining; lubrication; coatings; surface engineering; friction; wear; contact mechanics

(This special issue belongs to the Section Manufacturing Processes and Systems)

Research on Green Processing and Testing Technologies for Food and Beverages

edited by

Konstantina Tsikrika

and

Pol Giménez Gil

submission deadline 15 Aug 2025 | 1 articles | Viewed by 1422 | Submission Open

Keywords: Ultrasound (US); High-Pressure Processing (HPP); cold plasma; Pulsed Electric Field (PEF); LC-MS; GC-MS; FTIR; PCR; RT-PCR; NGS

(This special issue belongs to the Section Food Process Engineering)

Biomass Energy Conversion for Efficient and Sustainable Utilization

edited by

Maginot Ngangyo-Heya

and

Artemio Carrillo-Parra

submission deadline 15 Aug 2025 | Viewed by 1093 | Submission Open

Keywords: bioenergy; biomass transformation technologies; biomass pretreatment; waste revaluation; advanced biofuels; hybrid biofuels.

(This special issue belongs to the Section Energy Systems)

Catalytic Gasification and Reforming Processes for Chemical Engineering

edited by Carlos Vera, Mariana Busto and Enrique Tarifa

submission deadline 15 Aug 2025 | 1 articles | Viewed by 933 | Submission Open

Keywords: catalytic gasification; tars; steam reforming; cracking; reforming; synthesis gas; biomass gasification; coal-biomass gasification; plastics gasification; kinetics; processes

(This special issue belongs to the Section Chemical Processes and Systems)

Advances in Engine Combustion Performance, Flow and Energy Conversion Efficiency

edited by Han Xu, Zenghui Yin and Junheng Liu

submission deadline 15 Aug 2025 | 1 articles | Viewed by 592 | Submission Open

Keywords: efficient energy conversion; fuel properties; combustion theory and technology; thermodynamic cycles; thermomechanical analysis; fluid mechanics

(This special issue belongs to the Section Energy Systems)

Preparation and Optimization of Carbon Nanomaterials and Composites for Biological and Chemical Applications

edited by Lin Jia Yin

submission deadline 15 Aug 2025 | 1 articles | Viewed by 545 | Submission Open

Keywords: carbon nanomaterials; nanocomposites; synthesis optimization; biomedical applications; chemical sensors; nanostructure engineering; sustainable nanotechnology

(This special issue belongs to the Section Materials Processes)

Insights into Hydrogen Production Using Solar Energy

edited by

Mahmoud Eltaweel

submission deadline 15 Aug 2025 | 1 articles | Viewed by 498 | Submission Open

Keywords: solar-to-hydrogen conversion; photoelectrochemical water splitting; photocatalysis for hydrogen generation; thermochemical hydrogen production; renewable energy integration

(This special issue belongs to the Section Energy Systems)

Electrochemically-Based Hydrogen Energy Preparation in Energy Conversion

edited by Zhiyuan Jiang and Zhiguo Qu

submission deadline 15 Aug 2025 | Viewed by 415 | Submission Open

Keywords: hydrogen evolution and oxidation reaction; electrochemical water electrolysis; hydrogen production; electrochemical cells and reactors; electrochemical hydrogen storage; proton exchange membrane fuel cells

(This special issue belongs to the Section Energy Systems)

Microbiological Environmental Monitoring in the Pharmaceutical Industry

edited by Marcelo Brandão,

Luciana Veloso da Costa

and Luiza Vasconcellos

submission deadline 15 Aug 2025 | Viewed by 292 | Submission Open

Keywords: pharmaceutical industry; environmental monitoring; contamination control strategy; quality control; microbiological identification; microbiological investigation; microbiological control; bioburden

(This special issue belongs to the Section Pharmaceutical Processes)

Innovative Robotic Process Control in Agriculture: Enhancing Efficiency and Sustainability

edited by Jingyao Gai and Jiqing Chen

submission deadline 15 Aug 2025 | Viewed by 194 | Submission Open

Keywords: agricultural robotics; agricultural automation; autonomous equipment; precision agriculture; human– robot collaboration; field robotics; smart farming; sustainable farming technologies

(This special issue belongs to the Section Automation Control Systems)

Green Photocatalysis for a Sustainable Future

edited by Lei Cheng, Yang Li and Jian Yang

submission deadline 15 Aug 2025 | Viewed by 177 | 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)

Process Automation and Smart Manufacturing in Industry 4.0/5.0

edited by

Sergey Y. Yurish

submission deadline 20 Aug 2025 | 12 articles | Viewed by 17957 | Submission Open

Keywords: process control; automation; smart factory; smart manufacturing; virtual engineering

(This special issue belongs to the Section Automation Control Systems)

Green Separation and Purification Processes

edited by

Inês Portugal

Carlos Manuel Silva

and

José Aniceto

submission deadline 20 Aug 2025 | 9 articles | Viewed by 17641 | Submission Open

Keywords: green processes; bioactive ingredients

(This special issue belongs to the Section Separation Processes)

Synthesis and Extraction Processes of Biotechnological Drugs of Plant Origin

edited by

Marijana Zovko Končić

and

Sylwia Zielińska

submission deadline 20 Aug 2025 | 7 articles | Viewed by 16344 | Submission Open

Keywords: biosynthesis; biosynthetic pathways; extraction procedures; medicinal plant; plant biotechnology; plant cell cultures; plant metabolites

(This special issue belongs to the Section Pharmaceutical Processes)

Phytochemicals: Extraction, Optimization, Identification, Biological Activities, and Applications in the Food, Nutraceutical, and Pharmaceutical Industries (2nd Edition)

edited by

Ibrahim Abu-Reidah

submission deadline 20 Aug 2025 | 10 articles | Viewed by 6949 | Submission Open

Keywords: phytochemical identification; biological activity; fingerprint; secondary metabolites; liquid and gas chromatography; mass spectrometry; analytical methods; phenolic compounds; bioactives; functional ingredients

(This special issue belongs to the Section Pharmaceutical Processes)

Process Intensification for Waste Valorization

edited by

Vincenza Calabrò

and

Catia Giovanna Lopresto

submission deadline 20 Aug 2025 | 2 articles | Viewed by 6253 | Submission Open

Keywords: biofuel; wastewater treatment; waste biomass

(This special issue belongs to the Section Environmental and Green Processes)

Application of Advanced Technologies in Microbial Biotechnology and Bioprocessing

edited by

Agustín Corral Luna

Monserrath Felix-Portillo

and Martha Arévalos-Sánchez

submission deadline 20 Aug 2025 | Viewed by 1422 | Submission Open

Keywords: biotechnology; bioprocess; synthetic biology; sustainability; microbiology; sequencing; artificial intelligence

(This special issue belongs to the Section Biological Processes and Systems)

Advances in Microbial Fuel Cell Technology for Wastewater Treatment and Energy Storage

edited by

Eustace Y. Fernando

and

Godfrey Kyazze

submission deadline 20 Aug 2025 | Viewed by 916 | Submission Open

Keywords: microbial fuel cells; bioelectrochemical cells; energy storage; batteries; capacitors; super capacitors; biosensing devices; bio-monitoring devices and environmental sensing devices

(This special issue belongs to the Section Environmental and Green Processes)

Sustainable and Intelligent Energy Systems and Processes: Recent Advances and Challenges (2nd Edition)

edited by

Mateo Bašić

, Marko Vekić and

Ivan Grgić

submission deadline 20 Aug 2025 | 1 articles | Viewed by 869 | Submission Open

Keywords: sustainability; intelligent control; renewable energy; reliability and resilience; smart grid; energy storage; edge computing; FACTS; power quality

(This special issue belongs to the Section Energy Systems)

Numerical Simulation and Engineering Application of Rock Mechanics and Geotechnical Engineering (Second Edition)

edited by Chenxi Ding,

Chun Feng

, Chun Liu, Liyun Yang and

Jianguo Wang

submission deadline 20 Aug 2025 | 1 articles | Viewed by 636 | Submission Open

Keywords: rock mechanics; geotechnical engineering; complex reservoir; numerical simulation; soil– fluid interaction; construction techniques

(This special issue belongs to the Section Energy Systems)

Analysis and Integration of Micropolar Fluid Systems

edited by Kyriaki-Evangelia Aslani and

Efstratios Tzirtzilakis

submission deadline 20 Aug 2025 | Viewed by 322 | Submission Open

Keywords: micropolar fluid; microrotation; microstructure; non-Newtonian fluid; couple stress; complex fluid; colloidal fluid; ferrofluid; blood; nanofluid

(This special issue belongs to the Section Energy Systems)

Process Intensification in Chemical Reaction Engineering (2nd Edition)

edited by

Vincenzo Russo

Pasi Tolvanen

and

Stefan Haase

submission deadline 25 Aug 2025 | 3 articles | Viewed by 7897 | Submission Open

Keywords: process intensification; chemical reaction engineering; microreactors; microwaves; sonochemistry; reactive chromatography; reactive distillation; structured reactors; static mixers; microfluidics

(This special issue belongs to the Section Chemical Processes and Systems)

Fuzzy Control System: Design and Applications

edited by

Wen-Jer Chang

submission deadline 25 Aug 2025 | 3 articles | Viewed by 3554 | Submission Open

Keywords: advanced fuzzy theory; control design and application; hybrid intelligent systems; type-2 fuzzy control; fuzzy system optimization; intelligent machine learning

(This special issue belongs to the Section Process Control and Monitoring)

Model of Unconventional Oil and Gas Exploration

edited by Bowen Hu, Huimin Wang and Kangsheng Xue

submission deadline 25 Aug 2025 | 3 articles | Viewed by 3457 | Submission Open

Keywords: unconventional oil and gas; reservoir geomechanics; multi-physics field coupling; flow in porous and factured media; reservoir staility

(This special issue belongs to the Section Chemical Processes and Systems)

Synthesis, Application and Structural Analysis of Composite Materials

edited by Caleb Carreño-Gallardo

submission deadline 25 Aug 2025 | 2 articles | Viewed by 3040 | Submission Open

Keywords: reinforcement synthesis; material functionalization; metal matrix composites; carbides; porous materials; powder

(This special issue belongs to the Section Materials Processes)

Thermal Engineering: Energy Conversion, Numerical Simulation, and Advanced Control

edited by

Moisés Montiel-González

Jesus Cerezo

and Miguel Ángel Basurto-Pensado

submission deadline 25 Aug 2025 | 3 articles | Viewed by 1520 | Submission Open

Keywords: computational fluid dynamics (CFD); energy efficiency; AI tools; thermal systems; sustainability; materials; mathematical model

(This special issue belongs to the Section Energy Systems)

2nd Edition of Artificial Intelligent Techniques in the Optimal Operation of Oil and Gas Production Systems

edited by

Guoqing Han

Xingyuan Liang

and Xiaojun Wu

submission deadline 25 Aug 2025 | 3 articles | Viewed by 1223 | Submission Open

Keywords: liquid loading; artificial lift; multiphase flow; gas lift; plunger lift; artificial intelligence; oil production

(This special issue belongs to the Section Energy Systems)

Production of Renewable Hydrogen: Prospects and Challenges

edited by

Mariana de Mattos V. M. Souza

submission deadline 25 Aug 2025 | 1 articles | Viewed by 1043 | Submission Open

Keywords: hydrogen; renewables; electrolysis; biomass; reforming; catalysts

(This special issue belongs to the Section Catalysis Enhanced Processes)

Advanced Studies of Oil and Gas Flow in Unconventional Oil and Gas Reservoir

edited by

Adebayo Abdulrauf

Liwu Jiang

and Ahmed Al-Yaseri

submission deadline 25 Aug 2025 | 1 articles | Viewed by 708 | Submission Open

Keywords: unconventionals; petrophysics; geomechanics; oil; gas; carbondioxide; hydrogen storage

(This special issue belongs to the Section Chemical Processes and Systems)

Metal-Organic Frameworks (MOFs) and Their Application in Storage, Adsorption and Separation Processes

edited by Abeer Al Mohtar and Georges Mouchaham

submission deadline 25 Aug 2025 | Viewed by 474 | Submission Open

Keywords: MOFs application; adsorption processes; separation processes; gas storage; liquid purification; volatile organic compound capture

(This special issue belongs to the Section Materials Processes)

Renewables Integration and Hybrid System Modelling

edited by Dallia Ali

submission deadline 25 Aug 2025 | Viewed by 369 | Submission Open

Keywords: renewable generation; grid integration; hybrid renewable– hydrogen energy systems; optimal system design and sizing; hybrid system cost and life-cycle analysis

(This special issue belongs to the Section Energy Systems)

Production, Purification and Applications of Carbon Nanomaterials

edited by Viviany Geraldo, Edelma Eleto da Silva, Evandro Augusto de Morais and Fabrício Vieira de Andrade

submission deadline 25 Aug 2025 | Viewed by 359 | Submission Open

Keywords: nanomaterials; carbon nanotubes; production of nanomaterials; application in composites; in situ methodology; dispersion of nanomaterials; purification

(This special issue belongs to the Section Materials Processes)

Micro- and Nano-Scaled Functionalization and Characterization of Surfaces of Materials for Biomedical Applications

edited by

Yuri Dekhtyar

and

Alina Vladescu

submission deadline 25 Aug 2025 | Viewed by 310 | Submission Open

Keywords: cells; biomolecules; coatings; biomaterials; surface morphology; in vitro/in vivo tests; corrosion; degradation; biocompatibility

(This special issue belongs to the Section Materials Processes)

Research on Conversion and Utilization of Waste Biomass

edited by

Marcos Alberto Coronado Ortega

and

José Ramón Ayala Bautista

submission deadline 25 Aug 2025 | Viewed by 235 | Submission Open

Keywords: biomass; bioenergy; biofuels; bioproducts; biochemicals; biorefinery; conversion processes

(This special issue belongs to the Section Environmental and Green Processes)

Transfer Learning Methods in Equipment Reliability Management

edited by Lei Wang, Xin Zhang and Xixing Li

submission deadline 31 Aug 2025 | 9 articles | Viewed by 11754 | Submission Open

Keywords: equipment reliability; transfer learning; domain adaptation; domain generalization; interpretability; fault diagnosis; fault prediction

(This special issue belongs to the Section AI-Enabled Process Engineering)

New Frontiers in Chromatographic Separation Technology

edited by

Laurence Muhr

and

Laetitia Canabady-Rochelle

submission deadline 31 Aug 2025 | 5 articles | Viewed by 9256 | Submission Open

Keywords: chromatography process development; multicolumn chromatography; selective stationary phase; electrodeionization; expanded bed chromatography; chromatography for downstream process; ion exchange in hydrometallurgy; chromatography column modeling; chromatography column design and control

(This special issue belongs to the Section Separation Processes)

Municipal Solid Waste for Energy Production and Resource Recovery

edited by

Md. Salatul Islam Mozumder

, Rajan Kumar Thapa, Surajbhan Sevda and

Nabin Aryal

submission deadline 31 Aug 2025 | 8 articles | Viewed by 8050 | Submission Open

Keywords: waste-to-energy technologies; life-cycle analysis of MSW; application of circular economy to MSW; production of new materials from MSW; recycling; recovery; and valorisations of waste; development of new technology for resource recovery from MSW; novel and environmental friendly MSW management systems

(This special issue belongs to the Section Environmental and Green Processes)

Analysis and Optimization Control of Active Distribution Networks and Smart Grids

edited by