| dc.description.abstract | The research on biogas production from organic waste and manure to the
effect of trace metal (nickel, cobalt) has been done. The objective of this
study was to discover the effect of trace metals nickel, cobalt on the
performance of biogas anaerobic digester in the acquisition of the raw
material organic waste and cow dung. Organic waste and cow dung were
blended using water at a ratio of 1:1:2 (w:w:v) and operated in the
digester sized 5L with stuffing volume of 4L as batch for 30 days with
conditions held constant of pH 6.5-7, 5. This research was conducted
with a variety of trace addition of nickel metal as much as 0.245 mg/L,
the addition of trace metal cobalt as much as 0.245 mg/L and the
combination of nickel and cobalt respectively 0.25 mg/L. As for some of
the parameters was observed every day, such as biogas volume and
temperature, the parameters are analyzed every 2 days of fermentation
such as chemical oxygen demand (COD), total suspended solids (TSS),
volatile suspended solids (VSS) and pH. In the study conducted acquired
the largest biogas volumes per day with the addition of trace metal cobalt
amount of 85 ml, percentage of COD removal by 46,48%, TSS remove
percentage obtained was 88,78% and volatile suspended solid as much as
16.540 mg/L. | en_US |
