PEMANFAATAN SAMPAH SAYUR PASAR DALAM PRODUKSI LISTRIK MELALUI MICROBIAL FUEL CELLS (UTILIZATION OF MARKET VEGETABLE WASTE IN ELECTRICITY PRODUCTION THROUGH MICROBIAL FUEL CELLS)
ABSTRACT: The presence of
organic market vegetable waste is so abundant. One of utilization of vegetable
market waste is processed into compost. However, compost has difficulties in
marketing so it is only used on a small scale and it gives impact to the
environment such as acidification and eutrophication. On the other hand, the
threat of energy and fuel-crisis makes activities related to renewable energy
into something urgent to be done. One of the renewable energy alternatives is
Microbial Fuel Cells (MFCs). MFCs are bioelectrochemical system spontaneously
converting biomass into electricity through metabolic activity of
microorganisms. The purpose of study is to apply MFCs as an application of
voltaic cells in producing electricity using slurry phase of vegetable waste as
substrate. Variations performed on the slurry phase comparison: water are 1: 2;
1: 1 and 2: 1, and the addition of EM4. Operations were conducted for 21 days.
Production of the greatest voltage is at R1+ reactor (1:2 with addition of EM4)
and reached 1180 mV. An electric current is 5.1 μA, and the electric power is
6.02 Mwatt, and the power density is 462.92 mWatt/m2. The presence of water in
MFCs role in the mechanism of vegetable waste degradation. The tendency of
increase in the electrical energy at the beginning of the operation of the
reactor showed an increase in cellular synthesis of microorganisms. Declining
electric energy is influenced of pH as microorganisms living place and the
formation process of attached media at the electrode.
Penulis: Muhamad Imaduddin, Hermawan,
Hadiyanto
Kode Jurnal: jptlisetrodd140612
