1. Poly(Vinyl Alcohol)-Bonded Carbon Electrodes for Desalination of Brackish Water Using Capacitive Deionization
- Author
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Damodhar Ghime, Prabir Ghosh, and Asvin S. Kumar
- Subjects
chemistry.chemical_classification ,010407 polymers ,Vinyl alcohol ,Materials science ,Capacitive deionization ,Materials Science (miscellaneous) ,General Chemical Engineering ,chemistry.chemical_element ,02 engineering and technology ,Polymer ,01 natural sciences ,Desalination ,Industrial and Manufacturing Engineering ,0104 chemical sciences ,chemistry.chemical_compound ,020401 chemical engineering ,chemistry ,Chemical engineering ,Electrode ,medicine ,Wetting ,0204 chemical engineering ,Carbon ,Activated carbon ,medicine.drug - Abstract
Permeable carbon atoms or aerogels support novel electrode materials. It is essential to improve the wetting surface area of carbon electrode for higher Capacitive Deionization (CDI) potency. To enhance the wettability of CDI electrodes, poly(vinyl alcohol) (PVA) binder (a water-soluble polymer) was used to fabricate the carbon electrodes, followed by the cross-linking of PVA with Glutaric Acid (GA). Morphological characteristics of modified electrodes were ascertained by Scanning Electron Microscopy. The primary purpose of this work is to investigate the desalting performance of PVA-bonded carbon electrodes by arranging a modified electrode with activated carbon powder and to observe its efficiency at a varied initial concentration of salt (400–1000 ppm). This makes CDI a feasible and economical means for the desalination of brackish water. The energy consumption during experiments was low, i.e., 2–5 kWh/m3 of desalted wastewater.
- Published
- 2020
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