Kurnani Tubagus Benito Achmad

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EFFECT OF BEEF CATTLE AND HORSE FECES MIXTURE ON THE QUALITY OF BIOGAS AND SLUDGE

Kurnani Tubagus Benito Achmad, Yuli Astuti Hidayati, Eulis Tanti Marlina

Abstract
The objective of the study was to find out the effect of beef cattle and horse feces mixtures on biogas energy content and sludge quality. This experimental study was based on Completely Randomized Design with three C/N ratio treatments, i.e. P1 = 25, P2 = 30 and P3 = 35. The treatments represent the mixtures of beef cattle and horse feces. The effect of the treatments was analyzed by ANOVA, and Duncan's Multiple Range Test analyzed the different effects among treatments. The results show that the beef cattle and horse feces mixtures significantly (P<0.05) increase biogas energy content. The C/N ratio of 35 provides the highest biogas energy content (147.6667 KJ). Furthermore, significantly (P<0.05) produces the highest sludge product (10.1533 kg) as well as the highest content of N (0.48%), P (0.44%) and K (0.32%).

Key words: feces, energy, biogas, sludge