Positive Impact of Iron Addition in Biogas Production by Mesofilic Anaerobic Digestion Of Cheese Waste Bintang Pamungkas*, Muthiah Mufidah, Muhammad Havis Maulana, Yusron Sugiarto
Program Study of Bioprocess Technology, Faculty of Agricultural Technology, Universitas Brawijaya
This aims of study is understand the influence of cheese waste concentration and Iron (Fe) addition on biogas production. The culture containing Fe were placed into reactors with a working volume of 60 ml. The cultures were incubated at a temperature of 35 degree C and a pH of 7. The concentration of cheese waste used varied from 0 g to 50 g per L, while the ratio of Fe addition ranged from 0 to 3 g per L. Biogas production was measured daily using the volume displacement method, and the pH of the cultures was monitored before and after the experiment. The result showed that cheese waste concentration of 16.67 g per L produced the highest biogas yield by 1372 mL per L and biogas production rate by 253.62 mL per L per d. Moreover, addition of Fe by 2 g per L increased biogas production by 50.79 percent and biogas production rate by 20.27 percent.
