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This study investigates the production of bioelectricity from a Microalgae Microbial Fuel Cell (MMFC) using Chlorella pyrenoidosa and batik wastewater as an energy source.

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What they did

System
MFC

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Abstract

Abstract Nowadays, the usage of batik clothes increased would make batik wastewater more desecrate the rivers in Indonesia. Batik wastewater contained much of chemical substances, so that very dangerous. One of environmentally alternatives energy that could solve this problem was Microbial Fuel Cell (MFC) which utilizes organic matter as an energy source of microbes in carrying out its metabolic activities to produce electricity. MFC system with microalgae named Microalgae Microbial Fuel Cell (MMFC). In this study, it would investigate the electrical energy produced by MMFC using Chlorella pyrenoidosa as catholyte and batik wastewater as anolyte. This study aims to evaluate performance of MMFC based on the influence of yeast variations (2 gr/L and 8 gr/L), concentration of wastewater (100%v and 50%v), and number of graphite electrode (1:1 and 2:2). The methods started from culturing microalgae. Then, MMFC simulation operated for 7 days. Every 24 hours, voltage and current were measured to be processed into polarization curve. The value of absorbance and COD level of wastewater too. The results of this study showed that 100%v batik wastewater, 2:2 bars graphite electrode, and 8 gr/L yeast addition was the best results in MMFC simulation.

Key findings

  • MMFC with Chlorella pyrenoidosa as catholyte and batik wastewater as anolyte produced electrical energy
  • The performance of MMFC was influenced by yeast variations, wastewater concentration, and number of graphite electrodes
  • The highest electrical energy production was achieved with 2 gr/L yeast, 100%v wastewater concentration, and 2:2 graphite electrode ratio

Keywords

Microbial fuel cellWastewaterChlorella pyrenoidosaPulp and paper industrySewage treatmentOrganic matter

Identifiers

DOI
10.1088/1757-899x/1053/1/012096
Journal
IOP Conference Series: Materials Science and Engineering
Year
2021