Abstract
Based on data from the Indonesia State Electricity Company (PLN) in 2021, the electricity capacity distributed throughout Indonesia is still not fulfilled and going to be overcome with renewable energy This research aimed to know the effect of micronutrient addition on the management of a food waste on microbial fuel cells for bioelectricity production. Positive effects of addition of micronutrients on various substrates have been reported, such as addition of Mg2+, Ni2+, Cu2+, Ca2+, Pb2+, Co2+, Cd2+, Cr2+, and Zn2+. First, food waste will be hydrolysed by hydrolityc fungi, then mixed with Shewanella oneidensis MR-1 bacteria, Sidoarjo mud, and 1 µg/L micronutrient. After micronutrient added, observations were made on the power density in 20 days. The best power density production was 6,175,438.596 mW/m2 which achieved by Cobalt addition. The total power density generated with the addition of Cobalt metal ions as a micronutrient was able to reach 29,099,689 mW/m2 or 29,099.69 kW/m2, which could achieve the target electricity power 2,949.58 MW by using a substrate of about 51 tons of food waste with the addition of micronutrient cobalt of about 0.05 gram/L. Thus, MFC can solve electricity problems in Indonesia.
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