Journal of Pure and Applied MicrobiologyVol. 8 No. May 2014 Special Edition

Effect of Biodegradation on the Physical Properties of Palm Oil Mill Efluent (Pome) using Mixed Culture of Fungi

Abass O. Alade1,2, Ahmad T. Jameel1*, Suleyman A. Muyibi1, Mohamed I. Abdul Karim1 and Zahangir Md. Alam1

1Bioenvironmental Research Centre (BERC), Department of Biotechnology Engineering, Faculty of Engineering, International Islamic University Malaysia, Kuala Lumpur, Malaysia. 2Department of Chemical Engineering, Faculty of Engineering, Ladoke Akintola University of Technology, P.M.B. 4000 Ogbomosho, Oyo State, Nigeri.

Received on 08 January 2014 and accepted on 24 March 2014

 

ABSTRACT

This study investigated the effects of biodegradation by the mixed culture of fungi (Pithomyces sacchari and Pestalotiopsis maculans) on selected physical properties of palm oil mill effluent (POME). Mixed culture innoculum (4% v/v) was added to autoclaved and raw POME samples, which were subjected to biodegradation at 120rpm and 35 ?C for six days. The pH, electrical conductivity, total dissolve solids and biosolids of the digested samples were quantified at 24 h intervals. These parameters for the autoclaved sample, at the end of the digestion period, were 6.88, 4.38mS/cm, 2.28 g/L and 25.6 g/L, respectively. These values were higher than 6.34, 4.24mS/cm, 2.22 g/L and 22.87g/L obtained for the raw POME sample, respectively. The kinetic studies of the degradation of POME, based on the concentration of the biosolids, were also investigated. The kinetic studies show that the degradation of the raw POME sample best fits the zero order kinetic model (R2 = 0.96), while the degradation of the autoclaved POME sample best fits the first order kinetic model (R2 = 0.83). However, the digested POME may require further treatment in order to meet standard suitable for discharge into the water body.

Keywords : Biodegradation, Mixed culture, Zero order, First order, Pithomycessacchari, Pestalotiopsismaculans.