The Effect of Higher Sludge Recycling Rate on Anaerobic Treatment of Palm Oil Mill Effluent in a Semi-Commercial Closed Digester for Renewable Energy

Alawi Sulaiman, Zainuri Busu, Meisam Tabatabaei, Shahrakbah Yacob, Suraini Abd-Aziz, Mohd Ali Hassan and Yoshihito Shirai

American Journal of Biochemistry and Biotechnology 5 ( 1 ): 1 - 6 , 2009