Abstract
Microbial desalination cell (MDC) has great potential toward direct electricity generation from wastewater and concurrent desalination through potential difference developed due to microbial activity. Degradation of phenol by isolate Pseudomonas aeruginosa in anodic chamber and simultaneous desalination of water in middle desalination chamber of multichamber MDC is demonstrated in this study. Performance of the MDCs with different anodic inoculum conditions, namely pure culture of P. aeruginosa (MDC-1), 50 % v/v mixture of P. aeruginosa and anaerobic mixed consortia (MDC-2) and anaerobic mixed consortia (MDC-3), was evaluated to compare the phenol degradation in anodic chamber, bioelectricity generation, and simultaneous total dissolved solids (TDS) removal from saline water in desalination chamber. Synergistic effect between P. aeruginosa and mixed anaerobic consortia as inoculum was evident in MDC-2 demonstrating phenol degradation of 90 %, TDS removal of 75 % in 72 h of reaction time along with higher power generation of 27.5 mW/m2 as compared to MDC-1 (95 %, 64 %, 12.8 mW/m2, respectively) and MDC-3 (58 %, 52 %, 4.8 mW/m2, respectively). The results illustrate that the multichamber MDC-2 is effective for simultaneous removal of phenol and dissolved solids contained in industrial wastewaters.
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Grants received from the Department of Science and Technology, Government of India (File No. DST/TSG/NTS/2010/61) to undertake this work is duly acknowledged.
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Pradhan, H., Jain, S.C. & Ghangrekar, M.M. Simultaneous Removal of Phenol and Dissolved Solids from Wastewater Using Multichambered Microbial Desalination Cell. Appl Biochem Biotechnol 177, 1638–1653 (2015). https://doi.org/10.1007/s12010-015-1842-5
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DOI: https://doi.org/10.1007/s12010-015-1842-5