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AWWA WQTC65870
- Electrochemical Removal of Total Dissolved Solids, Nitrate, Ammonia from Drinking Water Using Charge Barrier Capacitive Deionization
- Conference Proceeding by American Water Works Association, 11/01/2007
- Publisher: AWWA
$12.00$24.00
This study examined the newly developed process of Capacitive deionization (CDI) forremoving ions through their adsorption on the surface of two oppositely charged porouselectrodes. This electrochemical process is conducted at low voltage (typically 0.8-1.5 V)without high-pressure pumps and acts as a "flow-through" capacitor. Theoreticalaspects to CDI and basic electrochemical principles have already been described.The general purpose of this study was to determine the feasibility and performance ofelectrochemical removal of total dissolved solids (TDS), nitrate and ammonia by using proprietary charge-barrierCDI technology (ENPAR Tech. Inc.). Optimal operation conditions, salts removalrates and power consumption were determined for various influent TDS concentrations. Materials and methods discussed in the study include: electrode material; the DesEL 9K pilot plan; system description; experimental setup; and, design of experiments. Includes 6 references, tables, figures.
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