Impact of different electrodes, mediators, and microbial cultures on wastewater treatment and power generation in the microbial desalination cell (MDC)
Microbial desalination cell (MDC) can treat wastewater and saline water simultaneously and generate power. The aim of the present research work was to identify the critical factors influencing COD reduction and power generation from the MDC reactor and to optimize the control parameters. The experim...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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IWA Publishing
2023-12-01
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| Series: | Water Science and Technology |
| Subjects: | |
| Online Access: | http://wst.iwaponline.com/content/88/12/3194 |
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| author | Shobhan Majumder Istalingamurthy D. Sadashiva Murthy B. M. Prakash B. M. |
| author_facet | Shobhan Majumder Istalingamurthy D. Sadashiva Murthy B. M. Prakash B. M. |
| author_sort | Shobhan Majumder |
| collection | DOAJ |
| description | Microbial desalination cell (MDC) can treat wastewater and saline water simultaneously and generate power. The aim of the present research work was to identify the critical factors influencing COD reduction and power generation from the MDC reactor and to optimize the control parameters. The experimental study was conducted by using medium to high-strength wastewater from distillery and brewery industry in batch-wise operation. The maximum voltage of 702 mV and current of 2.16 mA were observed for the carbon brush electrode. The mediated aeration process with the presence of potassium ferricyanide was reported in 87% COD reduction and 992 mV voltage generation. The presence of the microbial culture provided 82% COD reduction and 51% TDS reduction. The maximum current density (CD) of 0.04 mA/cm2 was observed for carbon brush, and a maximum power density (PD) of 15.56 mW/cm2 was found with aeration and potassium ferricyanide mediator. This study provided insight towards the impact of the electrode materials and the effects of mediator, aeration, and microbial culture on MDC performance.
HIGHLIGHTS
Effect of different mediators and microbial culture on the desalination efficiencies.;
Effect of different electrode materials on power generation.;
Variation profile of pH in anode, desalination chamber, and cathode chamber.;
Morphological study on the microbial growth on electrodes, AEM, and CEM.; |
| first_indexed | 2024-03-08T17:33:17Z |
| format | Article |
| id | doaj.art-069f1abe8d544b18bd5ed7f1e7f6372c |
| institution | Directory Open Access Journal |
| issn | 0273-1223 1996-9732 |
| language | English |
| last_indexed | 2024-03-08T17:33:17Z |
| publishDate | 2023-12-01 |
| publisher | IWA Publishing |
| record_format | Article |
| series | Water Science and Technology |
| spelling | doaj.art-069f1abe8d544b18bd5ed7f1e7f6372c2024-01-02T13:28:05ZengIWA PublishingWater Science and Technology0273-12231996-97322023-12-0188123194322510.2166/wst.2023.406406Impact of different electrodes, mediators, and microbial cultures on wastewater treatment and power generation in the microbial desalination cell (MDC)Shobhan Majumder0Istalingamurthy D.1Sadashiva Murthy B. M.2Prakash B. M.3 Department of Environmental Engineering, JSS Science and Technology University, Mysuru, Karnataka 570006, India Department of Environmental Engineering, JSS Science and Technology University, Mysuru, Karnataka 570006, India Department of Environmental Engineering, JSS Science and Technology University, Mysuru, Karnataka 570006, India Karnataka State Pollution Control Board, Hebbal Industrial Area, Metagalli, Mysuru, Karnataka 570016, India Microbial desalination cell (MDC) can treat wastewater and saline water simultaneously and generate power. The aim of the present research work was to identify the critical factors influencing COD reduction and power generation from the MDC reactor and to optimize the control parameters. The experimental study was conducted by using medium to high-strength wastewater from distillery and brewery industry in batch-wise operation. The maximum voltage of 702 mV and current of 2.16 mA were observed for the carbon brush electrode. The mediated aeration process with the presence of potassium ferricyanide was reported in 87% COD reduction and 992 mV voltage generation. The presence of the microbial culture provided 82% COD reduction and 51% TDS reduction. The maximum current density (CD) of 0.04 mA/cm2 was observed for carbon brush, and a maximum power density (PD) of 15.56 mW/cm2 was found with aeration and potassium ferricyanide mediator. This study provided insight towards the impact of the electrode materials and the effects of mediator, aeration, and microbial culture on MDC performance. HIGHLIGHTS Effect of different mediators and microbial culture on the desalination efficiencies.; Effect of different electrode materials on power generation.; Variation profile of pH in anode, desalination chamber, and cathode chamber.; Morphological study on the microbial growth on electrodes, AEM, and CEM.;http://wst.iwaponline.com/content/88/12/3194aerationelectrodeindustrial wastewatermediatormicrobesmicrobial desalination cell |
| spellingShingle | Shobhan Majumder Istalingamurthy D. Sadashiva Murthy B. M. Prakash B. M. Impact of different electrodes, mediators, and microbial cultures on wastewater treatment and power generation in the microbial desalination cell (MDC) Water Science and Technology aeration electrode industrial wastewater mediator microbes microbial desalination cell |
| title | Impact of different electrodes, mediators, and microbial cultures on wastewater treatment and power generation in the microbial desalination cell (MDC) |
| title_full | Impact of different electrodes, mediators, and microbial cultures on wastewater treatment and power generation in the microbial desalination cell (MDC) |
| title_fullStr | Impact of different electrodes, mediators, and microbial cultures on wastewater treatment and power generation in the microbial desalination cell (MDC) |
| title_full_unstemmed | Impact of different electrodes, mediators, and microbial cultures on wastewater treatment and power generation in the microbial desalination cell (MDC) |
| title_short | Impact of different electrodes, mediators, and microbial cultures on wastewater treatment and power generation in the microbial desalination cell (MDC) |
| title_sort | impact of different electrodes mediators and microbial cultures on wastewater treatment and power generation in the microbial desalination cell mdc |
| topic | aeration electrode industrial wastewater mediator microbes microbial desalination cell |
| url | http://wst.iwaponline.com/content/88/12/3194 |
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