Capacitive deionization coupled with microbial fuel cells to desalinate low-concentration salt water

Liu, Yuan; Yang, Xufei; Liang, Peng; Wang, Lei; Huang, Zheng‐Hong; Wei, Jincheng; Huang, Xia

doi:10.1016/j.biortech.2012.01.137

Cited by 100 publications

(41 citation statements)

References 14 publications

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“…In addition, the salt concentration gradient in the middle desalination chamber, the anode and cathode chambers may also affect the desalination performance. Ideally, the salt concentration in the desalination chamber should be significantly higher than that of the electrolytes, since a low salt concentration could result in lowering the DR as dialysis takes place by the reverse concentration gradient between the saltwater in the desalination chamber and the electrolytes [8].…”

Section: Microbial Desalination Cellsmentioning

confidence: 99%

Microbial desalination cell technology: A review and a case study

et al. 2015

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Section: Microbial Desalination Cellsmentioning

confidence: 99%

Microbial desalination cell technology: A review and a case study

et al. 2015

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“…In the first 24 h of rapid salinity removal, 15.5 mg/(L·h) TDS r of this MCDC was lower than 35.6 mg/(L·h) in CDI-MFC (Yuan et al 2012), which could be attributed to the different desalination chamber volume, initial NaCl concentration, adsorptive material quality, and difference operational mode. A more appropriate comparison was made between the three-chamber MCDC with sodium acetate as anodic substrate (Forrestal et al 2012) and our MCDC.…”

Section: Desalination Performance Of Mcdcmentioning

confidence: 58%

“…CDI as an electrochemical desalination method usually needs a low direct current voltage lower than 1.4 V for the electric double layer formation, which the bioelectricity can offer. Yuan et al (2012) combined an external capacitive deionization (CDI) and microbial fuel cell (MFC) to treat 60 mg/L NaCl solution, and the water desalination rate was 35.6 mg/(L·h). Forrestal et al (2012) designed a microbial capacitive desalination cell by embedding a CDI between anodic chamber and cathode chamber.…”

Section: Introductionmentioning

confidence: 99%

Bioelectricity generation and dewatered sludge degradation in microbial capacitive desalination cell

Meng

Zhao

Feng

et al. 2016

Environ Sci Pollut Res

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Microbial desalination cell (MDC) is a new approach for the synergy in bioelectricity generation, desalination and organic waste treatment without additional power input. However, current MDC systems cause salt accumulation in anodic wastewater and sludge. A microbial capacitive desalination cell (MCDC) with dewatered sludge as anodic substrate was developed to address the salt migration problem and improve the sludge recycling value by special designed-membrane assemblies, which consisted of cation exchange membranes (CEMs), layers of activated carbon cloth (ACC), and nickel foam. Experimental results indicated that the maximum power output of 2.06 W/m with open circuit voltage (OCV) of 0.942 V was produced in 42 days. When initial NaCl concentration was 2 g/L, the desalinization rate was about 15.5 mg/(L·h) in the first 24 h, indicating that the MCDC reactor was suitable to desalinize the low concentration salt solution rapidly. The conductivity of the anodic substrate decreased during the 42-day operation; the CEM/ACC/Ni assemblies could effectively restrict the salt accumulation in MCDC anode and promote dewatered sludge effective use by optimizing the dewatered sludge properties, such as organic matter, C/N, pH value, and electric conductivity (EC).

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“…Compared with conventional methods (e.g., multistage flash evaporation, reverse osmosis, and electrodialysis), CDI is a promising alternative for desalination owing to its low energy consumption, pressure, and cost and easy, secondary-waste-free electrode regeneration (Oren, 2008). More recently, several studies have reported the incorporation of CDI with microbial fuel cells to simultaneously treat wastewater and desalinate saltwater (Yuan et al, 2012;Feng et al, 2013;Yang et al, 2013).…”

Section: Introductionmentioning

confidence: 99%