Journal
DESALINATION
Volume 324, Issue -, Pages 127-133Publisher
ELSEVIER
DOI: 10.1016/j.desal.2013.06.009
Keywords
Membrane capacitive deionization (MCDI); Capacitive deionization (CDI); Adsorption capacity; Energy consumption
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Funding
- National Natural Science Foundation of China [21276178]
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In this paper, graphite cloths were used as electrode materials to fabricate the capacitive deionization (CDI) cell and the ion-exchange membranes were introduced in the CDI cell to assemble the membrane capacitive deionization (MCDI) module. The desalination performances of the MCDI and the CDI cells were investigated under different working voltages and feed concentrations and assessed by adsorption capacity and specific energy consumption. The experimental results indicated that the introduction of the ion exchange membranes could effectively prevent the co-ion effect in the CDI and the current efficiency of MCDI was up to four times of the CDI. Under the experimental conditions, the adsorption capacity of MCDI is much higher than that of the CDI and also its specific energy consumption was dramatically reduced indicating the comprehensive economical advantage of MCDI technology. (C) 2013 Elsevier B.V. All rights reserved.
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