Engineering HDR Seminar Series 38, 2013: Screening and Selection of Natural Coagulants for Reducing the Turbidity of Surface Water

Ms Choy Sook Yan, Chem Eng postgraduate student

Date: 2013-08-14
Time: 17:00 to 18:00
Venue: Engineering Meeting Room 1, 5-4-22


Proprietary chemical coagulants notably alum has long been recognized for its superiority in water clarifications. Yet, the generation of large volumes of non-biodegradable sludge, the potential development of Alzheimer’s disease and other neurodegenerative illnesses are highly undesirable. Research studies have previously concluded that fruit wastes which are usually deemed unusable could be transformed into valuable natural coagulants in the treatment of turbid water. The proposed work will evaluate the possibility of utilizing fruit wastes as valuable sources for natural coagulants. A total of 12 samples from the various parts of the five potential fruit wastes (banana, jackfruit, musk lime, papaya and rambutan) have been screened and tested for their coagulation activities using both the aqueous and alcoholic extracts. The influences of pH of synthetic raw water as well as coagulant dosage have been studied to obtain the highest turbidity removals. Based on the worthwhile usage of fruit waste as potential natural coagulants, the overall economics and the sustainability of the fruit farming and juicing industries can be enhanced in the near future.

About the Speaker

Ms Choy Sook Yan received her BEng (Hons) in Chemical Engineering from Monash University Sunway Campus in 2011. She then continued her postgraduate studies in 2012 under the supervision of Dr Nagasundara Ramanan and Dr Nagendra Prasad. Her research focus is on the screening and selection of potential plant based natural coagulants derived from fruit wastes in reducing turbidity from surface water.