Rate My Professor Kai Siang

Kai Siang Oh is a chemical engineer whose research at Monash University Malaysia's School of Engineering centers on sustainable water treatment solutions, particularly greywater recycling and advanced filtration systems. Holding a PhD in Engineering from Monash University Malaysia, Oh has contributed significantly to environmental engineering through innovative approaches to wastewater management and resource recovery. His work explores decentralized systems for water reuse, including hybrid rainwater-greywater setups, greenwall filtration for lakewater treatment, and membrane technologies enhanced with nanomaterials like chitosan and graphene oxide. Oh's investigations also extend to green chemistry applications, such as natural deep eutectic solvents (NADES) and aqueous two-phase systems (ATPS) for anthocyanin extraction from natural sources like Dacryodes rostrata peel. These efforts address critical challenges in water scarcity, especially in regions like Malaysia, by optimizing treatment efficiency, pollutant removal, and lifecycle assessments of filtration media.

Oh's career includes roles in the Department of Chemical Engineering at Monash University Malaysia, where he conducted PhD research and co-authored numerous peer-reviewed publications. Key works include 'Prospects of hybrid rainwater-greywater decentralised system for water recycling and reuse: A review' (2016), 'A review of greywater recycling related issues: Challenges and future prospects in Malaysia' (2017), 'Optimizing the in-line ozone injection and delivery strategy in a multistage pilot-scale greywater treatment system' (2015), 'Life Cycle Assessment of Various Filtering Media for Greywater Treatment Using Greenwall Filtration System' (2021), 'The effects of different plant species in greenwall filtration system on lakewater treatment' (2023), 'Greenwall Filtration System for Lakewater Treatment: A Case Study on Cocopeat/Perlite Filter Media' (2023), 'Core-shell Ca-alginate beads formed via inverse-gelation technique for the enhanced removal of lead(II) from aqueous solution' (2025), and 'Characterization of choline chloride-based deep eutectic solvent for anthocyanin extraction via aqueous two-phase system' (2023). With over 360 citations, his research has influenced advancements in biopolymeric membranes, ozone injection strategies, and climate-resilient drainage systems. Oh has collaborated with faculty such as Phaik Eong Poh and Meng Nan Chong on projects funded by Monash's School of Engineering.