**About the Editors**

**Wei-Hsin Chen** is a Distinguished Professor in the Department of Aeronautics and Astronautics, National Cheng Kung University, Taiwan. He was a visiting professor at Princeton University, University of New South Wales, University of Edinburgh, University of British Columbia, and University of Lorraine. He was also invited as an Invited Lecturer at the University of Lorraine in 2019 and 2020. His research topics include bioenergy (combustion, torrefaction, pyrolysis, gasification, liquefaction, bioethanol, etc.), hydrogen production and purification, clean energy (clean coal technology, wind power, thermoelectric generation, carbon capture and utilization, etc.), energy system analysis (optimization, evolutionary computation, machine learning, etc.), and atmospheric science (aerosol absorption and PM2.5). He has published around 700 papers with an H-index of 62 (Web of Science). His research provided huge contributions to, and had a large impact on, biomass torrefaction. In this field, his papers, citations, and highly cited papers account for 4.2%, 10.5%, and 25% globally, respectively. He is the associate editor and editorial board member of several prestigious international journals, and the guest editors of over 10 international journals. He has published 10 books and chapters concerning energy science and air pollution. He received 2015 and 2018 Outstanding Research Award (Ministry of Science and Technology, Taiwan), 2015 and 2020 Highly Cited Paper Award (*Applied Energy*, Elsevier), 2016, 2017, 2018, 2019, and 2020 Highly Cited Researcher (Web of Science), 2017 Outstanding Engineering Professor Award (Chinese Institute of Engineers), 2019 Highly Cited Review Article Award (*Bioresource Technology*, Elsevier), 2020 Top Download Paper Award (*International Journal of Energy Research*, Wiley), 2021 TECO Award, etc.

**Hwai Chyuan Ong** is a faculty member at the Future Technology Research Center, National Yunlin University of Science and Technology. His research interests are wide-ranging, under the general umbrella of renewable energy systems, energy and fuel, green technology and environmental sustainability and solar thermal systems. He has published more than 200 high-impact SCI journal papers with an H-index 50 (WOS). Additionally, he has invited and delivered several keynotes, plenary and invited talks at various international conferences. He was listed as a Highly Cited Researcher (Engineering) by Clarivate Analytics in 2020 and 2019. In 2018 and 2017, he received the Malaysia's Research Star Award (frontier researcher) and, in 2016, he received the Malaysia's Rising Star Award (young researcher) from the Ministry of Higher Education and Clarivate Analytics. In year 2018, he also received the outstanding research award and the most highly cited paper award from the University of Malaya Excellence Award. Currently, he is an Associate Editor of Critical Reviews in Environmental Science and Technology, Alexandria Engineering Journal, Energies and guest editor in FUEL, Sustainable Energy Technologies and Assessment, Environmental Pollution, Biomass Conversion and Biorefinery and Catalyst, as well as an editorial board member for a few other journals. Ong is also a Core Group Member of APRU Sustainable Waste Management (SWM) program.

**Shih-Hsin Ho** is now a professor at the School of Environment, Harbin Institute of Technology (HIT), China. His research interests mainly focus on microalgae, bioenergy, biochar, wastewater treatment, waste refinery, and bio-based functional materials. He has published over 190 reputed SCI papers (e.g., Nature Biomed. Eng., Trends Biotechnol., Biotechnol. Adv., Appl. Cat. B, Rene. Sus. Energy Rev., Green Chem., Curr. Opi. Biotechnol., Appl. Energy, Water Res., Environ. Sci. and Technol., etc.), and was the first/corresponding author in over 90 of them (including 9 ISI Hi-Ci papers). His SCI total citations are over 10000 (Google Scholar). His H index is 51 (Google Scholar). He has obtained the 2014 Young Top-notch Talents (HIT, China), 2015 National Young Thousand Talents (China), 2017 Minjiang Scholar (Fujian, China), 2019 Young Scientist Studio (HIT, China), etc.

**Pau Loke Show** is the President of the International Bioprocess Association in Malaysia. He also the director of the Sustainable Food Processing Research Centre and co-director of Future Food Malaysia, Beacon of Excellence, in the University of Nottingham Malaysia. He is a Full Professor of Biochemical Engineering at the Department of Chemical and Environmental Engineering, Faculty of Science and Engineering, University of Nottingham Malaysia. He successfully obtained a PhD two years after obtaining his bachelor's degree from Universiti Putra Malaysia. He is currently a Professional Engineer (PEng), registered with the Board of Engineers Malaysia, Chartered Engineer (CEng) of the Engineering Council UK (MIChemE) and Professional Technologies (PTech), registered with the Malaysia Board of Technologists. Prof Ir. Ts. Dr. Show obtained the Post Graduate Certificate of Higher Education (PGCHE) in 2014, and is now a Fellow of the Higher Education Academy (FHEA) UK. Since he started his career in 2012, he has received numerous prestigious academic awards, including the APEC Science Prize for Innovation, Research and Education ("ASPIRE") Malaysia Award 2020, Malaysia Young Scientist 2019 Award, ASEAN-India Research and Training Fellowship 2019, The DaSilva Award 2018, JSPS Fellowship 2018, Top 100 Asian Scientists 2017, Asia's Rising Scientists Award 2017 and Winner of Young Researcher in IChemE Award 2016. He has graduated more than 20 PhD and MSc students, and is leading a team of 20 members consisting of postdoctoral, PhD and MSc research students. In 2020, he had published more than 550 journal papers in less than 8 years of his career. His publications have been cited over 10000 times in the last 5 years. His current h-index is 50, placing him among the top leaders of his chosen field (Microalgae Technology). He is also the Primary Project leader for more than 35 projects from International, National, and Industry Projects, with a total amount of more than MYR 5.0 million.
