Size-dependent microbial substrate uptake kinetics for aerobic granules
by Qi-Shan Liu, Yu Liu, Kuan Yeow Show, Joo-Hwa Tay
International Journal of Environment and Waste Management (IJEWM), Vol. 7, No. 1/2, 2011

Abstract: Biodegradation kinetics of aerobic granules determined by indirect method of resporimetric technique showed that it followed Monod kinetics, and the kinetic behaviour was size-dependent. It was further demonstrated that biodegradation kinetics was a surface reaction associated phenomenon. It shows that the affinity coefficient of biomass to substrate in terms of qmax/Ks ratio (specific maximum biodegradation rate/Monod constant) is linearly related to the specific surface area of granules. Thus, smaller granules with larger surface area had a fast biodegradation rate. This study demonstrated that the biodegradation kinetics of aerobic granules is mainly a surface reaction mechanism.

Online publication date: Sun, 05-Dec-2010

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