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Electrosorption driven by microbial fuel cells to remove phenol without external power supply
Jie Yang1, Minghua Zhou, Yingying Zhao
1Key Laboratory of Pollution Process and Environmental Criteria, Ministry of Education, Tianjin Key Laboratory of Urban Ecology Environmental Remediation and Pollution Control, Research Center for Sustainable Energy & Environmental Technologies, College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China.
Bioresource Technology
|November 2, 2013
Summary
This study introduces Microbial Fuel Cell-Sorption (MFC-Sorption) for cost-effective phenol removal. The system enhances adsorption capacity by optimizing parameters like pH and electrolyte concentration without external power.
Area of Science:
- Environmental Science
- Electrochemistry
- Biotechnology
Background:
- Phenol is a common pollutant in industrial wastewater.
- Conventional adsorption methods require external energy input.
- Microbial Fuel Cells (MFCs) offer a sustainable energy source.
Purpose of the Study:
- To investigate the operating parameters for phenol removal using MFC-Sorption.
- To evaluate the adsorption isotherms and kinetics of the MFC-Sorption system.
- To demonstrate a cost-effective and energy-efficient method for phenol remediation.
Main Methods:
- Studied operating parameters: pH, electrolyte concentration, initial phenol concentration, MFC connection mode.
- Analyzed adsorption isotherms (Langmuir) and kinetics (pseudo-second-order).
- Compared MFC-Sorption performance with conventional adsorption and electrosorption.
Main Results:
- High electrolyte concentration and low pH improved phenol removal.
- Series MFC connection (1.76 mmol/g) outperformed parallel (1.46 mmol/g).
- MFC-Sorption showed 48% higher capacity than conventional adsorption; electrosorption showed 65% higher capacity.
Conclusions:
- MFC-Sorption is a promising technology for efficient phenol removal.
- The system operates without external electrical energy, enhancing sustainability.
- Optimized MFC-Sorption offers a cost-effective solution for phenol-contaminated wastewater.
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