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Intracellular biopolymer productions using mixed microbial cultures from fermented POME

Salmiati, and Ujang, Zaini and Salim, M. R. and Md. Din, Mohd. Fadhil and Ahmad, M. A. (2007) Intracellular biopolymer productions using mixed microbial cultures from fermented POME. Water Science and Technology, 56 (8). pp. 179-185. ISSN 0273-1223

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Official URL: http://dx.doi.org/10.2166/wst.2007.687

Abstract

This study aimed to produce polyhydroxyalkanoates (PHAs) from organic wastes by mixed bacterial cultures using anaerobic-aerobic fermentation systems. Palm oil mill effluent (POME) was used as an organic source, which was cultivated in a two-step-process of acidogenesis and acid polymerization. POME was operated in a continuous flow anaerobic reactor to access volatile fatty acids (VFAs) for PHAs production. During fermentation, VFA concentration was produced in the range of 5 to 8 g/L and the COD concentration reduced up to 80% from 65 g/L. The VFA from anaerobic fermentation was then utilised for PHA production using a mixed culture in availability of aerobic bioreactor. Production of PHAs was recorded high when using a high volume of substrates because of the higher VFA concentration. Even though the maximum PHA content was observed at only 40% of the cell dried weight (CDW), their production and performance are significant in mixed microbial culture.

Item Type:Article
Uncontrolled Keywords:Biopolymers, mixed culture, oil palm waste, PHAs, recovery
Subjects:Q Science > Q Science (General)
Divisions:Science
ID Code:7506
Deposited By: Nur Amal Zakiah Shamsudin
Deposited On:07 Jan 2009 01:07
Last Modified:01 Jun 2010 15:52

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