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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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Advances in Process Systems Engineering: Selected Papers from China PSE Annual Meeting

edited by

Yufei Wang

and

Lei Zhang

submission deadline 31 Jul 2025 | 11 articles | Viewed by 11092 | Submission Open

Keywords: process design; artificial intelligence; process control; supply chain; optimization; carbon neutrality; sustainable development

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

Recent Advances in Hydrocarbon Production Processes from Geoenergy

edited by

Lufeng Zhang

, Fengrui Sun and

Jie Wang

submission deadline 31 Jul 2025 | 11 articles | Viewed by 9350 | Submission Open

Keywords: hydrate; unconventional reservoir; hot dry rock; coalbed methane reservoir; EOR; geo-engineering; reservoir stimulation

(This special issue belongs to the Section Energy Systems)

Biomass to Renewable Energy Processes, 2nd Edition

edited by Giulia Monteleone and

Vinod Kumar Sharma

submission deadline 31 Jul 2025 | 4 articles | Viewed by 8934 | Submission Open

Keywords: circular economy; renewable energy; bioenergy; advanced biofuel; biorefinery; energy efficiency

(This special issue belongs to the Section Energy Systems)

Recent Advances in Carbon Capture, Utilisation and Storage Technology and the Green Development of Geological Energy

edited by

Liang Zhang

Yukun Du

and

Hongbin Yang

submission deadline 31 Jul 2025 | 5 articles | Viewed by 8826 | Submission Open

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

Modeling and Optimization for Multi-scale Integration

edited by

Marco Vaccari

submission deadline 31 Jul 2025 | 7 articles | Viewed by 5428 | Submission Open

Keywords: modeling; optimization; multi-scale; digital twin; simulation; data-driven modeling; scale-up

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

Design and Optimisation of Solar Energy Systems

edited by Manuel Jesús Rodríguez-Pérez,

David Meneses Rodríguez

and Felipe Noh Pat

submission deadline 31 Jul 2025 | Viewed by 3316 | Submission Open

Keywords: photovoltaic technologies; solar thermal energy collectors; storage; and conversion; energy system modeling and optimization; renewable energy modeling and optimization; passive; active; and hybrid solar thermal systems; photoelectrochemical processes; sustainable energy solutions; solar energy harvesting; advanced solar materials; solar energy materials: synthesis and characterization; nanomaterials for photovoltaic applications; characterization and structure– property relations of new energy materials

(This special issue belongs to the Section Energy Systems)

Sediment Contamination and Metal Removal from Wastewater

edited by Yahya El Hammoudani, Khadija Haboubi and Fouad Dimane

submission deadline 31 Jul 2025 | Viewed by 2832 | Submission Open

Keywords: sediment contamination; heavy metal removal; wastewater treatment; environmental remediation; sustainable technologies

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

Extraction, Separation, and Purification of Bioactive Compounds

edited by Martina Jakovljević Kovač and

Stela Jokić

submission deadline 31 Jul 2025 | 2 articles | Viewed by 2451 | Submission Open

Keywords: extraction; purification; bioactive components; solvents; chromatography; optimization; innovative techniques

(This special issue belongs to the Section Separation Processes)

Recycling and Value-Added Utilization of Secondary Resources

edited by Jiawei Wen, Wenhao Yu and

Shiyuan Liu

submission deadline 31 Jul 2025 | 2 articles | Viewed by 2270 | Submission Open

Keywords: value-added utilization; secondary resources; recovery; critical metal; upcycling; lifecycle assessment

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

Experiments and Numerical Simulations for Heat Transfer and Flow of Supercritical Fluids

edited by Qian Li, Jue Wang and Wenke Zheng

submission deadline 31 Jul 2025 | 3 articles | Viewed by 1900 | Submission Open

Keywords: supercritical fluids; testing technology; numerical simulation method; flow and heat transfer; system; equipment; CO2 brayton cycle; natural gas liquefaction and gasification

(This special issue belongs to the Section Energy Systems)

Recent Advances in Additive Manufacturing and 3D Printing

edited by

Irshad Khilji

and Jagannadh Satyavolu

submission deadline 31 Jul 2025 | 1 articles | Viewed by 908 | Submission Open

Keywords: additive manufacturing; 3D printing technologies; hybrid nanocomposites; biobased materials; biocompatible materials; multi-material printing; aerospace applications; sustainable manufacturing; large-scale 3D printing; advanced manufacturing techniques

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

Clean Energy Systems—Current State and Future Perspectives

edited by Jiale Yan and

Xiao Gu

submission deadline 31 Jul 2025 | 1 articles | Viewed by 832 | Submission Open

Keywords: clean energy use and consumption; development of clean energy technologies; clean energy transmission and conversion; optimization of clean energy supply networks; clean energy and economic policy; clean energy and regional development

(This special issue belongs to the Section Energy Systems)

Development of Cutting-Edge Nanomaterials and Composite Materials for Sustainable Energy Application

edited by Kunyapat Thummavichai and Fang Xu

submission deadline 31 Jul 2025 | 1 articles | Viewed by 773 | Submission Open

Keywords: composite materials; smart grid application; simulation energy solutions; nanotechnology; renewable applications

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

Application of Adaptive Control, Fault Detection and Deep Learning in Electrical Engineering

edited by

Stephen Oladipo

and

Sheng Yang

submission deadline 31 Jul 2025 | Viewed by 488 | Submission Open

Keywords: energy demands; adaptive control; fault detection; power industry; deep learning; artificial intelligence

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

Metal Nanoparticles (MNPs): Green Synthesis and Catalytic Applications

edited by

Oscar E. Medina

Camilo A. Franco

and

Farid B. Cortés

submission deadline 31 Jul 2025 | Viewed by 465 | Submission Open

Keywords: adsorption phenomenon; absorption phenomenon; biomedical applications; catalytic applications; characterization; energy storage; environmental remediation; green synthesis; metal nanoparticles; transition energy; water treatments

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

Innovations in Waste Heat Recovery in Industrial Processes

edited by

Qibin Li

and Shukun Wang

submission deadline 31 Jul 2025 | Viewed by 411 | Submission Open

Keywords: waste heat recovery; power generation; thermal management; energy conversion; clean industrial production; thermodynamic systems; carbon reduction potential

(This special issue belongs to the Section Sustainable Processes)

Innovations and Advances in Green Electrochemical Technologies for a Sustainable Future

edited by

Ana Teresa Brandão

and

Carlos Pereira

submission deadline 31 Jul 2025 | Viewed by 347 | Submission Open

Keywords: green electrochemistry; sustainable energy storage; electrocatalysis; eco-friendly technologies; electrochemical processes; renewable energy conversion; environmental remediation; sustainable batteries; waste-to-energy systems; energy efficiency

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

Advances in Optically Functional Nanomaterials

edited by Piyush Agarwal and

Chuanyi Wang

submission deadline 31 Jul 2025 | Viewed by 312 | Submission Open

Keywords: quantum optics; nanomaterials; plasmonics; ultrafast lasing; optical communication

(This special issue belongs to the Section Materials Processes)

Optimizing Metal Extraction Processes: Recent Advances in Leaching Technology

edited by

Mizraim U. Flores

submission deadline 31 Jul 2025 | Viewed by 233 | Submission Open

Keywords: leaching; metals; extraction; metallurgy; novel processes; sustainable processes

(This special issue belongs to the Section Separation Processes)

Natural Gas/Hydrogen Liquefaction Processes and Refrigerating System

edited by Heng Sun

submission deadline 31 Jul 2025 | Viewed by 180 | Submission Open

Keywords: liquefaction process; specific energy consumption; natural gas; hydrogen; ortho-para hydrogen conversion; operation simulation; process optimization; control strategy

(This special issue belongs to the Section Energy Systems)

Recent Advances in Energy and Dynamical Systems

edited by

Omar Hernández-González

submission deadline 31 Jul 2025 | Viewed by 171 | Submission Open

Keywords: dynamic systems; energy systems; estimation; control; simulation; data-driven; fault detection

(This special issue belongs to the Section Energy Systems)

Emerging Technologies for Renewable Energy Utilization to Diversify the Energy Matrix

edited by Edwin Lenin Chica Arrieta and Ainhoa Rubio-Clemente

submission deadline 1 Aug 2025 | 1 articles | Viewed by 2032 | Submission Open

Keywords: renewable energy; environmental impact assessment; developing countries; sustainability; lifecycle analysis; carbon footprint; biodiversity conservation; run-of-the-river hydroelectric; green technology; policy frameworks

(This special issue belongs to the Section Energy Systems)

Extraction, Separation, and Medicinal Analysis of Natural Products

edited by

Hassan Amhamdi

, Mhamed Ahari and Amine Salhi

submission deadline 5 Aug 2025 | 1 articles | Viewed by 1636 | Submission Open

Keywords: natural product; extraction; isolation and purification; characterization; medicinal analysis

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

Research on Battery Energy Storage in Renewable Energy Systems

edited by

Jilei Ye

and

Zhuoyuan Zheng

submission deadline 10 Aug 2025 | 5 articles | Viewed by 12306 | Submission Open

Keywords: battery energy storage; modeling; safety; thermal management; integration; optimization

(This special issue belongs to the Section Energy Systems)

Process Systems Engineering for Environmental Protection

edited by

Javier Martínez-Gómez

submission deadline 10 Aug 2025 | 8 articles | Viewed by 10997 | Submission Open

Keywords: process systems engineering; environmental protection; sustainable development; process analysis; optimization and integration; decision analysis; phase change material; energy storage

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

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 1913 | 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 1667 | 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 1463 | 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)

Research on Water Pollution Control and Remediation Technology

edited by

Ahmed Moufti

submission deadline 10 Aug 2025 | 2 articles | Viewed by 1420 | 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)

Design, Inspection and Repair of Oil and Gas Pipelines

edited by Wei Liang

submission deadline 10 Aug 2025 | 1 articles | Viewed by 1168 | 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)

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 271 | 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)

Advances in Metallurgical Processing and Involved Separation Techniques

edited by

Amilton Botelho Junior

submission deadline 10 Aug 2025 | Viewed by 203 | Submission Open

Keywords: hydrometallurgy; pyrometallurgy; recycling; energy transition

(This special issue belongs to the Section Separation Processes)

Advances in Renewable Energy Systems (2nd Edition)

edited by

Ferdinando Salata

, Virgilio Ciancio and Jacopo Dell’Olmo

submission deadline 15 Aug 2025 | 12 articles | Viewed by 18572 | 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 7391 | 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)

Biomass Energy Conversion for Efficient and Sustainable Utilization

edited by

Maginot Ngangyo-Heya

and

Artemio Carrillo-Parra

submission deadline 15 Aug 2025 | 1 articles | Viewed by 1661 | Submission Open

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

(This special issue belongs to the Section Energy 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 1618 | 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)

Advances in Computer Simulation of Condensed Matter Systems

edited by Kolattukudy Poulose Santo

submission deadline 15 Aug 2025 | 1 articles | Viewed by 1427 | Submission Open

Keywords: machine learning; computer simulations; molecular dynamics; Monte Carlo simulations; coarse-grained models; density functional theory; polymers; nanomaterials; interfacial systems; porous materials; colloids; membranes; biomolecules

(This special issue belongs to the Section Materials Processes)

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 1355 | 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)

Insights into Hydrogen Production Using Solar Energy

edited by

Mahmoud Eltaweel

submission deadline 15 Aug 2025 | 1 articles | Viewed by 909 | 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)

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 868 | 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)

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 760 | 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)

Electrochemically-Based Hydrogen Energy Preparation in Energy Conversion

edited by Zhiyuan Jiang and Zhiguo Qu

submission deadline 15 Aug 2025 | Viewed by 445 | 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 356 | 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 238 | 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 220 | 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)

Green Separation and Purification Processes

edited by

Inês Portugal

Carlos Manuel Silva

and

José Aniceto

submission deadline 20 Aug 2025 | 12 articles | Viewed by 21577 | Submission Open

Keywords: green processes; bioactive ingredients

(This special issue belongs to the Section Separation 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 21289 | Submission Open

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

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

Synthesis and Extraction Processes of Biotechnological Drugs of Plant Origin

edited by

Marijana Zovko Končić

and

Sylwia Zielińska

submission deadline 20 Aug 2025 | 8 articles | Viewed by 18641 | 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 | 13 articles | Viewed by 10639 | 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