Kinerja Pembangkit Biolistrik Salt Bridge Microbial Fuel Cell Variasi Rasio Karagenan- Karboksimetil Selulosa

Abstract

Sistem microbial fuel cell (MFC) adalah teknologi terbarukan yang dapat mengubah materi organik menjadi energi berupa listrik. Tujuan penelitian ini menentukan hasil listrik tertinggi dari limbah cair pindang ikan melalui teknologi microbial fuel cell (MFC) salt bridge dan menentukan rasio karagenan: karboksilmetil selulosa yang optimal pada jembatan garam untuk menghasilkan energi listrik dalam sistem MFC. Jembatan garam K:KMS dibuat dengan perlakuan rasio K:KMS 1:1, 0,5:1, 0,6:1 (b/b). Perlakuan terbaik adalah K:KMS dengan perbandingan 1:1 menghasilkan tegangan listrik tertinggi sebesar 0,88 V. Jembatan garam K:KMS dengan perbandingan 0,5:1 menghasilkan kuat arus tertinggi sebesar 1,22 mA, serta daya listrik tertinggi sebesar 0,85 mW. Nilai efisiensi penurunan COD, BOD, serta TAN mengalami penurunan sebesar 90,75%, 90,36%, dan 60,45% pada perlakuan rasio K:KMS 1:1. Sistem salt bridge MFC ini menunjukkan kinerja yang sangat baik dan berpotensi untuk dikembangkan di masa depan.

The microbial fuel cell (MFC) system is a renewable technology that converts organic matter into energy in the form of electricity. The purpose of this study was to determine the highest electrical yield from fish pindang liquid waste through salt bridge microbial fuel cell (MFC) technology and determined the optimal ratio of carrageenan: carboxylmethyl cellulose in salt bridges to generate electrical energy in the MFC system. The carrageenan-carboxylmethyl cellulose salt bridges were prepared by treating the different carrageenan-carboxylmethyl cellulose compositions of 1: 1, 0,6:1, and 0,5: 1 (w/w). The highest electric voltage was produces from carrageenan-carboxylmethyl cellulose salt bridge treatment with a ratio of 1:1 with a value of 0,88 V. The carrageenan-carboxylmethyl cellulose salt bridge with a ratio of 0,5:1 was produced the highest current strength of 1,22 mA, and the highest electrical power of 0,85 mW. In addition, the reduction efficiency values of COD, BOD, and TAN on fishery waste with treatment of C:CMC ratio of 1:1 were 90,75%, 90,36%, and 60,45%. System salt bridge MFC showed excellent performance and has the potential to be developed in the future.