Produksi biogas dari pencerna anaerob serasah dan eceng gondok (Eichhornia crassipes) dengan sumber inokulum kotoran sapi dan kotoran ayam

Saktiyudha RP. 2014. Biogas production from anaerobic digesters of leaf litter and water hyacinth (Eichhornia crassipes) with a source of inoculum cattle and chicken manures. Bioteknologi 11: 23-27. Biogas is a renewable alternative energy source also has the added value, which is in the processing of waste biomass is environmentally friendly. This study aims to examine the production of biogas in anaerobic reform process based on a mixture of biomass litter substrate and water hyacinth (Eichhornia crassipes Mart. Solms) using inoculum source of cattle manure and chicken manure. Litter biomass and water hyacinth biomass were as a substrate (80%) in the anaerobic digester with inoculum source of cattle manure or chicken manure (20%) through the fermentation process. Factorial experiment with four replications performed using a completely randomized design (CRD) with two factors. The first factor in the form of variations in the substrate, the substrate control with 100 % litter, litter substrate variation and water hyacinth (75%:25%), and a mixture of litter and water hyacinth (50%:50%) . The second factor were a variation of the source of inoculum, ie cattle manure and chicken manure. Parameter measurements performed at weeks 0th, 2nd, 4th, 6th. Parameters observed were volume of biogas, CH4 concentration, temperature, pH, COD, BOD, TS and VS. Data were analyzed by ANOVA followed by DMRT at 5 % level test. Highest production of biogas in the sixth week (862.5 ml) was showed by the treatment of 75 % litter and 25 % water hyacinth with inoculum source of cattle manure. Removal efficiency of COD; BOD; TS and VS on that treatment were amounted to 76.12 %, 32.88 %, 66.53 % and 63.74 %