Renewable energy from sediment microbial fuel cell technology from Kendari Bay swamp sediments

摘要

The study about the use of organic materials in marsh sediments of Kendari Bay in a Sediment Microbial fuel cell technology (SMFC) has been performed to produce electrical energy. SMFC is a technology to transform complex organic matter in the sediment become energy through a bioprocess of microbial metabolism. This research aims to know the characteristic on Kendari Bay sediments, to determine the performance of Kendari Bay sediment for SMFC, to determine the effect of surface area on electrode to SMFC performance, and to determine the change of substrate characteristic. The analysis shows that Kendari Bay sediment consist of 4.23% C, 1.08 % N and C/N ratio of 3.92. The SMFC with Kendari bay sediment, graphite rod electrode, and aerator as oxidation substance generated a maximum power voltage of 507 mV and 0.19 mA of electric current. Meanwhile, the generated power was 580 mV with 0.67 mA of electric current when a graphite sheet was used as electrode. The organic content in the Kendari Bay sediment after SMFC running increased to 4.06 %, with 0.97 % nitrogen and C/N ratio of 4.19.