Water Desalination and Bioelectricity Generation Using Three Chambers Microbial Salinity Cell Reactor with Electrolyte Recirculation
Rustiana Yuliasni 1  
,   Abudukeremu Kadier 2, 3  
,   Nur Zen 1  
,   Nanik Indah Setianingsih 1  
,   Setyo Budi Kurniawan 2  
,   Peng-Cheng Ma 3  
 
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1
Center of Industrial Pollution Prevention Technology, Ministry of Industry of the Republic of Indonesia, Jalan Ki Mangunsarkoro No. 6, Semarang 50136, Central Java, Indonesia
2
Department of Chemical and Process Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia
3
Laboratory of Environmental Science and Technology, The Xinjiang Technical Institute of Physics and Chemistry, Key Laboratory of Functional Materials and Devices for Special Environments, Chinese Academy of Sciences, Urumqi, 830011, China
CORRESPONDING AUTHOR
Rustiana Yuliasni   

Center of Industrial Pollution Prevention Technology, Ministry of Industry of the Republic of Indonesia, Jalan Ki Mangunsarkoro No. 6, Semarang 50136, Central Java, Indonesia
Publication date: 2020-11-01
 
J. Ecol. Eng. 2020; 21(8):129–136
 
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ABSTRACT
Microbial Salinity Cell (MSC) can simultaneously desalinate water and generate electricity from biodegradation of organic compound in wastewater. The utilization of a three-chambers configuration system along with electrolyte recirculation, create a desalination process which occurs when salt ions from the anode and cathode chambers are accumulated into the middle chamber, driven by the electrical energy generated from organic compound biodegradation. The performance of three-chambers electrolyte recirculation MSC was investigated using three different NaCl concentrations of 2.0 g/L, 4.0 g/L, and 8.0 g/L, with the acetate concentration of 0.82 g/L. At 2.0 g/L NaCl, the maximum power density production was 42.76 mW/m2, increasing conductivity in the middle chamber from 15.09 µS/cm to 0.74 mS/cm. At 4.0 g/L, the maximum power density reached was 53.37 mW/m2, and conductivity in the middle chamber was raised from 60.08 µS/cm to 2.74 mS/cm. At 8.0 g/L, the power density was 29.29 mW/m2 and conductivity in the middle chamber increased from 10.0 µS/cm to1.65 mS/cm. The performance of MSC was correlated with initial NaCl concentration, with optimum NaCl concentration was at 4.0 g/L that able to generate highest power of 53.37 mW/m2 and showed the highest increasing conductivity from 80.8 to 2.74 mS/cm.