Dr. Sarah FarrukhDr. Sarah Farrukh is a Postdoctoral Research Associate at the University of Edinburgh, UK, specializing in designing experimental rigs, fabricating materials, and conducting advanced data analysis for energy storage materials. She previously served as an Associate Professor at the School of Chemical and Materials Engineering (SCME), National University of Sciences and Technology (NUST), Pakistan, where she co-founded the Membranes for Advanced Research Laboratory (MEMAR Lab). With over seven years of experience in academia and industry, her research encompasses energy storage, carbon capture, and wastewater treatment. She has authored more than 70 indexed publications, over 8 book chapters, and two books: Nano-Technology and Generation of Sustainable Hydrogen and Facilitated Transport Membranes (FTMs) for CO2 Capture: Overview and Future Trends. Her contributions have received over 1,500 citations, featuring an h-index of 24 and an i10-index of 48. She has secured three research grants and submitted three patents. Additionally, her work as editor and co-author on Multi-Layer Composite (MLC) Membranes for Gas Separation was funded by the EPSRC project (Grant No. EP/W027593/1).Engr. Syed Shujaat KarimEngr. Syed Shujaat Karim completed his MS in Chemical Engineering from the School of Chemical and Materials Engineering (SCME), National University of Sciences and Technology (NUST), Pakistan. As a Research Assistant, he focused on polymeric and composite membranes for gas separation, lightweight materials for electromagnetic interference (EMI) shielding, and waste plastic recycling. Previously, in his BSc Chemical Engineering at the University of Engineering and Technology (UET), Peshawar, he researched wastewater treatment processes, including oil-water separation. His research interests include environmental remediation, separation technology, and computational modeling. He has authored 22 indexed publications and co-authored a book: Facilitated Transport Membranes (FTMs) for CO2 Capture: Overview and Future Trends. His work contributes to advancements in membrane technology and industrial solutions.. Dr. Xianfeng FanProfessor Xianfeng Fan, Chair of Particulate Materials Processing at the University of Edinburgh, UK, is a leading researcher in chemical engineering and materials science. Holding degrees in Chemical Engineering, Materials, and Metallurgy (MEng, MSc, PhD), his research focuses on particulate processing, multiphase flows, photocatalysts, and gas separation. He is active in professional organizations, such as the Institute of Cast Metals Engineers, and has served on editorial boards for journals like Nanoscience and Nanotechnology. His citation metrics of 6,312 total citations, an h-index of 42, and an i10-index of 111 highlight his significant influence in sustainable technologies and materials processing.Dr. Zhibin YuProfessor Zhibin Yu, Chair of Energy Engineering at the University of Liverpool, leads the Energy Research Cluster and holds a Royal Society Industrial Fellowship (2023–2027). With a BEng from Huazhong University of Science and Technology and a PhD from the Chinese Academy of Sciences, his research in thermal engineering includes work at CNRS, France. A Chartered Engineer, Fellow of the Institution of Engineers in Scotland (IES), and Fellow of the Higher Education Academy (FHEA), his citation metrics of 3,646 total citations, an h-index of 35, and an i10-index of 80 reflect his contributions to thermal energy and sustainable engineering.

• Chapter 1 - Introduction.- Chapter 2 – Synthesis Methods and Characterization Techniques of Multi-layer Composite (MLC) Membranes.- Chapter 3 – Multi-layer composite (MLC) Membranes Gas Transport Models and Separation Mechanisms.- Chapter 4 – Multi-layer composite (MLC) Membranes For Methane Purification (CO2/CH4).- Chapter 5 - Multi-layer composite (MLC) Membranes For Hydrogen Purification.- Chapter 6 - Multi-layer composite (MLC) Membranes For Post-Combustion Carbon Capture (CO2/N2).- Chapter 7 - Multi-layer composite (MLC) Membranes For Air Separation (O2/N2).- Chapter 8 - Multi-layer composite (MLC) Membranes For Helium Enrichment.- Chapter 9 – Computational Approaches On Multi-layer composite (MLC) Membrane-based Gas Separation.- Chapter 10 – Current Challenges and Future Prospect/Trends.- Chapter 11 – Conclusion.