Sustainable photosynthetic biocathode in microbial desalination cells

Kokabian, Bahareh; Gude, Veera Gnaneswar

doi:10.1016/j.cej.2014.10.048

Cited by 109 publications

(52 citation statements)

References 31 publications

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“…Oxygen is a cheap and strong electron acceptor, which can be supplied from air. Alternatively, photosynthetic systems can be integrated in the cathode chamber to provide in-situ electron acceptors (oxygen) [1,54,55]. They also provide for additional nutrient removal from the wastewater.…”

Section: Microbial Desalination Cells (Mdcs)mentioning

confidence: 99%

Energy and water autarky of wastewater treatment and power generation systems

Gude

2015

Renewable and Sustainable Energy Reviews

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284

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Section: Microbial Desalination Cells (Mdcs)mentioning

confidence: 99%

Energy and water autarky of wastewater treatment and power generation systems

Gude

2015

Renewable and Sustainable Energy Reviews

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284

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“…Combining the energy produced and that saved by MDCs, a total 4 kWhm −3 of energy savings can be realized. Microalgae can be harvested to produce additional energy in the form of biofuels .…”

Section: Resultsmentioning

confidence: 99%

“…A correlation was established between the absorbance at an optical density of 620 nm and different biomass concentrations (g L −1 ). The relationship between the absorbance (Y) and cell biomass (X) is given as :

Y = 0.8702 X ({normalR}^{2} = 0.9962)

…”

Section: Methodsmentioning

confidence: 99%

“…However, energy and water supply issues are intertwined and cannot be addressed in isolation . Integrated solutions that utilize waste sources for energy production, which in turn, power freshwater production are attractive options to address the current energy and water nexus issues . To achieve this goal, several biochemical, physico‐chemical, thermochemical, and bioelectrochemical systems have been examined .…”

Section: Introductionmentioning

confidence: 99%

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Resource recovery from low strength wastewater in a bioelectrochemical desalination process

Stuart-Dahl

Martinez‐Guerra

Kokabian

et al. 2019

Engineering in Life Sciences

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In this research, low strength synthetic wastewaters with chemical oxygen demand less than 300 mg L−1 were treated at different concentrations in a bioelectrochemical desalination process. A process optimization model was utilized to study the performance of the photosynthetic bioelectrochemical desalination process. The variables include substrate (chemical oxygen demand) concentration, total dissolved solids, and microalgae biomass concentration in the cathode chamber. Relationships between the chemical oxygen demand concentration, microalgae, and salt concentrations were evaluated. Power densities and potential energy benefits from microalgal biomass growth were discussed. The results from this study demonstrated the reliability and reproducibility of the photosynthetic microbial desalination process performance followed by a response surface methodology optimization. This study also confirms the suitability of bioelectrochemical desalination process for treating low substrate wastewaters such as agricultural wastewaters, anaerobic digester effluents, and septic tank effluents for net energy production and water desalination.

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“…With the Nafion ® 117 membrane, rod-shaped microorganisms of c. 2 μm were observed, corresponding to bacteria [ Fig. 7(a3)] 91 and crystals deposited on the biofilm surface [ Fig. 7(a2)].…”

Section: Scanning Electron Microscopymentioning

confidence: 99%

Performance of a greywater cathode in a microbial fuel cell with three ion exchange membranes

Moreno‐Cervera¹,

Aguilar‐Vega

Domínguez‐Maldonado³

et al. 2019

J of Chemical Tech & Biotech

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BACKGROUND Greywater and blackwater treatment is necessary to make sanitation and water reuse possible, and microbial fuel cells (MFCs) have emerged as a promising technology for achieving this objective. Ion exchange membranes play a key role in double chamber microbial fuel cell performance, but there are differences of opinion as to which membrane type is better. RESULTS This project was set up to study the effect of three ion exchange membranes (Nafion® 117, Ultrex™ CMI‐7000 and Ultrex™ AMI‐7001) in MFCs using greywater as catholyte in stacks of three microbial fuel cells each. The results demonstrate that the stacks with cationic membranes (Nafion® 117 and Ultrex™ CMI‐7000) generated higher power (201.50 ± 21.62 and 178.74 ± 56.89 mW m−3, respectively) than those with the anionic membrane stack Ultrex™ AMI‐7001 (71.57 ± 3.46 mW m−3). For the greywater catholyte, a 31% of chemical oxygen demand removal was achieved and proved to be an option as a catholyte in microbial fuel cells for countries that carry out wastewater separation. CONCLUSIONS The results obtained in this study demonstrated that an anion exchange membrane is not a better option for double chamber MFCs. © 2019 Society of Chemical Industry

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Sustainable photosynthetic biocathode in microbial desalination cells

Cited by 109 publications

References 31 publications

Energy and water autarky of wastewater treatment and power generation systems

Energy and water autarky of wastewater treatment and power generation systems

Resource recovery from low strength wastewater in a bioelectrochemical desalination process

Performance of a greywater cathode in a microbial fuel cell with three ion exchange membranes

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