# Harnessing Dangke Whey as a Sustainable Nutrient Source for Lactobacillus plantarum in Microbial Fuel Cells for Bioelectricity Generation
> Dirayanti D.

URL kanonis: https://discover.unhas.ac.id/publications/harnessing-dangke-whey-as-a-sustainable-nutrient-source-for-lactobacillus-planta
Jurnal / Konferensi: Indonesian Journal of Chemistry
Tahun terbit: 2025
DOI: https://doi.org/10.22146/ijc.106830
ISSN: 14119420
Kuartil SJR: Q3
Citations: 0

## Authors
- Dirayanti D.

## Abstract
Dangke whey is a liquid by-product of traditional cheese production in Enrekang, Indonesia, which still contains nutrients like sugar and lactose. This research investigates the potential of using Lactobacillus plantarum and Dangke whey as a substrate in microbial fuel cells (MFCs) for bioelectricity generation. Dangke whey, rich in lactose and nutrients, was tested as a carbon source in MFCs under varying whey concentrations (20, 80, and 100%) and agitation speeds (90, 120, and 150 rpm). The highest voltage output of 600 mV was obtained using 80% whey at 150 rpm stirring. Analysis revealed that lactose breakdown and acid production were key factors in bioelectricity generation. Additionally, four MFCs connected in series powered a red LED for 126 days, reaching a maximum voltage of 1,070 mV and a power density of 183.46 mW/cm2. This study demonstrates the potential utilization of Dangke whey as a sustainable, low-cost substrate for MFCs, contributing to dairy waste valorization and renewable energy generation.

## Keywords
- Chemistry
- Microbial fuel cell
- Lactose
- Renewable energy
- Food science
- Sugar
- Pulp and paper industry
- Nutrient
- Energy source
- Biomass (ecology)
- Lactobacillus plantarum
- Bioconversion
- Carbon source
- Bioenergy
- Substrate (aquarium)
- Biofuel
- Carbon fibers
- Waste management
- Lactobacillus
- Energy density
- Renewable resource
- Microorganism
- Electricity generation
- Biorefinery
- Bacteria

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Sumber: Discover Unhas — RIMS Universitas Hasanuddin.
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