Utilization of effluent biodigester as a bioactivactor for the decomposition of rice husk (Oryza sativa) into compost

Accelerate the biodegradation of rice husks into compost requires a bioactivator. The bioactivator used is the effluent from a biogas reactor which integrates with the fermenter. The composting process for rice husk (Oryza sativa) adds a bioactivatorwith two treatments. Treatment A uses an effluent bioactivator Biogas reactor; treatment B uses an effluent bioactivator from the University of North Sumatra pilot plant. This study aimed to compare the effect of variations in composting treatment and B on the results of composting rice husks. From the results of the study, the two treatments at temperatures were not too much different; the average of treatment A was 330C, and B was 33.200C; the average value of pH in Treatment A was 7.1 and B was 7.3, while the average value of Content moisture in treatment A was 55.59% and in B was 55.16%. Meanwhile, the value of nutrients and macros is not too much different between treatments A and B. The organic C in A is 14.12%, and B is 14.36%. The N-Total value in treatment A is 1.08%, and B is 1.12%, the value of P2O5Ain0.77 and B is 0.69%, the valueAis 0.57% and B is 0.60%, the value of CaO in treatment A is 0.17%, and B is 0.22%, the value of MgO in treatment A is 0.29%, and B is 0.34, the value of Cu in treatment A is 9 ppm, and B is 9.1 ppm, the value of Zn in treatment A is 50 ppm, and B is 52 ppm.