Abu Zahrim Yaser, PhD, is Associate Professor in Waste Processing Technology at the Faculty of Engineering, Universiti Malaysia Sabah, Malaysia. He obtained his PhD from Swansea University, Wales. His inventions on composting system have been adopted by the Tongod and Nabawan districts in Sabah, Malaysia. He is a visiting scientist at the University of Hull, England, and a member of the Institutions of Chemical Engineers (United Kingdom), Board of Engineers (Malaysia), and MyBIOGAS.

Siew-Xian Chin, PhD, is currently a Senior Lecturer at the Universiti Kebangsaan Malaysia (UKM). She received her PhD in Materials Science at UKM, Malaysia, in 2015. Her research interests include the development of new materials for wastewater treatment, such as membrane, bead, aerogel, etc. She has utilized agricultural by-products, including cellulose and chitosan, to produce adsorbent materials with high adsorption capacity by introducing various chemical modifications. She was a Visiting Doctoral Researcher at the Chinese Academy of Science in 2014.

Leonardo Sepúlveda Torre, PhD, is a Researcher at the School of Chemistry at the Universidad Autónoma de Coahuila, Saltillo, Coahuila, México, where he is also a member of the Bioprocesses and Microbial Biochemistry Group. His postgraduate studies were in related topics on food biotechnology in the Food Research Department of the UAdeC. In 2011, he made a research stay at the Institute of Biotechnology and Bioengineering at the University of Minho (Uminho), Braga, Portugal. He worked as a collaborator at the Center of Biological Engineering in Uminho, Braga, Portugal, with the link project "Biotechnologies for Regional Food Biodiversity in Latin America." He carried out his postdoctoral program at the same institution, writing on "Assisted Extraction by Fermentation of Polyphenols from Agroindustrial Waste."

A. K. Haghi, PhD, is a retired professor with over 250 academic research-oriented books as well as over 1000 research papers published in various journals and conference proceedings, with over 3300 citations and h-index of 30, according to the Google Scholar database. Professor Haghi has received several grants, consulted for several major corporations, and is a frequent speaker to national and international audiences. He is Founder and former Editor-in-Chief of the International Journal of Chemoinformatics and Chemical Engineering, published by IGI Global, as well as Polymers Research Journal,published by Nova Science Publishers. Professor Haghi has acted as an editorial board member of many international journals. He has served as a member of the Canadian Research and Development Center of Sciences and Cultures and the Research Chemistry Centre, Coimbra, Portugal. He has supervised several PhD and MSc theses at the University of Guilan and co-supervised international doctoral projects. Professor Haghi holds a BSc in urban and environmental engineering from the University of North Carolina (USA), and holds two MSc, one in mechanical engineering from North Carolina A&T State University (USA) and another one in applied mechanics, acoustics, and materials from the Université de Technologie de Compiègne (France). He was awarded a PhD in engineering sciences at Université de Franche-Comté (France).