ASSESSMENT OF THE ELECTRICITY GENERATION, DESALINATION, AND WASTEWATER TREATMENT EFFICIENCIES OF A MICROBIAL DESALINATION CELL OPERATING WITH ELECTROLYTE DILUTION AS PH CONTROL MEASURE
DOI:
https://doi.org/10.4314/jfas.v13i1.11Keywords:
Exoelectrogens, desalination, voltage, current, CODAbstract
In this study, the dilution of anolyte and catholyte as a pH control measure in a newly developed microbial desalination cell (MDC) was explored. Also, the effects of dilution on the newly developed MDC’s electricity generation, desalination and wastewater treatment efficiencies were assessed against a three-chamber MDC which used potassium phosphate buffer for pH control. On the average, the newly developed MDC exhibited a lower buffer capacity (pH change of 1.73 ± 0.06) as compared to the relatively higher buffer capacity (pH change of 1.49 ± 0.07) of the three-chamber MDC. However, the newly developed MDC produced a higher desalination efficiency of 50.01% compared to the 46.66% produced by the three-chamber MDC and a higher power density of 0.62 ± 0.13 W/m3 than the 0.35 ± 0.70 W/m3 produced by the three-chamber MDC. It’s COD reduction efficiency (63.21%) was also higher than the 42.81% produced by the three-chamber MDC.
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References
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[3] Cao X, Huang X, Liang P, Xiao K, Zhou Y, Zhang X, Logan BE. A new method for water desalination using microbial desalination cells. Environ. Sci. Technol., 2009, 43(18), 7148-7152. https://doi.org/10.1021/es901950j
[4] Qu Y, Feng Y, Wang X, Liu J, Lv J, He W, Logan B E. Simultaneous water desalination and electricity generation in a microbial desalination cell with electrolyte recirculation for pH control. Bioresour. Technol., 2012, 106, 89 – 94. https://doi.org/10.1016/j.biortech.2011.11.045
[5] Davis R J, Kim Y, Logan B E. Increasing desalination by mitigating anolyte pH imbalance using catholyte effluent addition in a multi-anode bench scale microbial desalination cell. ACS Sustainable Chem. Eng., 2013, 1(9), 1200–1206. https://doi.org/10.1021/sc400148j
[6] Luo H, Xu P, Jenkins P E, Ren Z. Ionic composition and transport mechanisms in microbial desalination cells. J. Membr. Sci., 2012, (409-410), 26-23. https://doi.org/10.1016/j.memsci.2012.02.059
[7] Forrestal C, Xu P, Ren Z. Sustainable desalination using a microbial capacitive desalination cell. Energy Environ. Sci., 2012, 5 (7161), 7161-7167. https://doi.org/10.1039/c2ee21121a
[8] Kokabian B, Gude V G. Photosynthetic microbial desalination cells (PMDCs) for clean energy, water, and biomass production. Environ. Sci. Proc. & Impact, 2013, 15(12), 2178–2185. https://doi.org/10.1039/c3em00415e
[9] Yuan H, Abu-Reesh I M, He Z. Enhancing desalination and wastewater treatment by coupling microbial desalination cells with forward osmosis. Chem. Eng. J., 2015, 270, 437–443. https://doi.org/10.1016/j.cej.2015.02.059
[10] Zhang B, He Z. Integrated salinity reduction and water recovery in an osmotic microbial desalination cell. RSC Advances, 2012, 2, 3265–3269
[11] Ping Q, He Z. Improving the flexibility of microbial desalination cells through spatially decoupling anode and cathode. Bioresour. Technol., 2013, 144:304–310. https://doi.org/10.1016/j.biortech.2013.06.117
[12] Zhang F, Chen M, Zhang Y, Zeng R J. Microbial desalination cells with ion exchange resin packed to enhance desalination at low salt concentration. J. Membr. Sci., 2012, 417(418),28–33. https://doi.org/10.1016/j.memsci.2012.06.009
[13] He Z, Huang Y, Manohar A, Mansfeld F. Effect of electrolyte pH on the rate of the anodic and cathodic reactions in an air-cathode microbial fuel cell. Bioelectrochemistry, 2008 74,78-82
[14] Logan B E. Microbial fuel cells. New Jersey: John Wiley & Sons Inc., 2008, pp 50-51.
[15] Almatouq A. Study of the parameters for optimization of the design and performance of bioelectrochemical systems for energy/hydrogen generation and resource recovery (Doctoral Dissertation), 2017. Retrieved from https://orca.cf.ac.uk/100405/1/2017/AlmatouqAPhD.pdf.
[16] Brastad K S, He Z. Water softening using microbial desalination cell technology. Desalination, 2013, 309,32–37. https://doi.org/10.1016/j.desal.2012.09.015
[17] Abubakari Z I, Mensah M, Buamah R, Abaidoo R C. Assessment of the electricity generation, desalination and wastewater treatment capacity of a plant microbial desalination cell (PMDC). Int. J. Energy Water. Resour., 2019, 3, 213-218. http://doiorg443.webvpn.fjmu.edu.cn/10.1007/s42108-019-00030-y
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Published
2020-10-05
How to Cite
IMORO, A. Z.; MENSAH, M.; BUAMAH, R. ASSESSMENT OF THE ELECTRICITY GENERATION, DESALINATION, AND WASTEWATER TREATMENT EFFICIENCIES OF A MICROBIAL DESALINATION CELL OPERATING WITH ELECTROLYTE DILUTION AS PH CONTROL MEASURE. Journal of Fundamental and Applied Sciences, [S. l.], v. 13, n. 1, p. 185–198, 2020. DOI: 10.4314/jfas.v13i1.11. Disponível em: https://jfas.info/index.php/JFAS/article/view/904. Acesso em: 30 jan. 2025.
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