OPTIMIZATION OF CASSAVA DECANTER CAKE BIOGAS PRODUCTION

Abstract

ABSTRACT

The optimization of biogas production from cassava pulp through hydrolysis with acid and base to breakdown the bond cellulose, hemicellulose and lignin in the form of volatile fatty acids and reducing sugars. The maximum rate of biogas yield was found at the cassava pulp concentration of 1.67%TS and 5%TS. In the study, conditions of hydrolysis were at pH 2, Temp 100 ◦C, and 30 mints reaction time before fermentation. Cassava pulp of 5%TS produced biogas yield as high as 0.1757 m³/kg TVS. The conditions for the biogas digesters with 1.67%TS produced biogas yield as 0.0027 m³/kg TVS. It was found that biogas production rate of cassava pulp the concentration of 5%TS, can be alternative for decrease cost of LPG and electric energy more than the concentration of 1.67%TS by 65 times.

Keywords: Biogas; Cassava decanter cake; Hydrolysis; Methanogens; Reducing sugar