Dr. Vincent Woon and NESE Master Student Publish in Journal of Cleaner Production


The Research Management Center congratulates Ooi Jun Keat and Ts. Dr. Vincent Woon Kok Sin from XMUM School of New Energy and Chemical Engineering for publishing an article in Journal of Cleaner Production, a tier-1 SCI journal with an impact factor of 9.297. 

With the title “A multi-objective model to optimize country-scale municipal solid waste management with economic and environmental objectives: A case study in Malaysia”, this article was first-authored by Ooi Jun Keat, a postgraduate student supervised by Dr. Vincent Woon, the corresponding author of the paper.


This paper highlighted a novel municipal solid waste (MSW) multi-objective optimization model using augmented Ɛ-constraint method. Eleven Pareto-optimal waste processing facility configurations are obtained from open landfills, material recycling facility, sanitary landfills, anaerobic digestion, composting, incineration, and plasma gasification. Compared to the current scenario (mainly open landfills) in Malaysia, the Pareto solutions show that the lowest-cost solution reduces 26% of the total cost while the least greenhouse gas emissions solution avoids 159% of carbon emissions. This study informs the policymakers that diversifying MSW valorization to different valuable products could simultaneously reduce the total cost and greenhouse gas emissions in Malaysia.


Figure illustrates the optimum allocation of MSW for decision makers to plan and design the policy for MSW management.

Ooi Jun Keat

“I would like to express my gratitude and appreciation for the mentorship of my supervisor, Dr. Vincent. I would not be even close to this achievement without his encouragement, advice, and support. Throughout the paper writing process, I was concerned if the content was good enough. This publication has given me confidence in my professional field, and I am glad to have an article published in an international journal.”

Ts. Dr. Vincent Woon

Ts. Dr. Vincent Woon serves as an Assistant Professor at XMUM School of Energy and Chemical Engineering. With 10-year academic and industry experiences in environmental management and green city planning, his research interests include carbon footprint analysis, life cycle assessment, recycling of solid waste, green township and building development, and energy optimization. Since joining XMUM, he received several international awards including YSEALI Academy Seminar Fellowship by the US Department of State, CrossCulture Programme Fellowship by the German Federal Foreign Office, and First Prize of the Japanese Award for Outstanding Research on Development by the Global Development Network. He is also a Professional Technologist with the Malaysia Board of Technologists and a GreenRE Accredited Professional of Real Estate & Housing Developers’ Association Malaysia.

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