Increasing fresh water consumption is an important issue due to the rapid population growth in the world, and it has led to a development of desalination technology to avoid fresh water shortage in the near future. Nowadays, the desalination technology based on thermal and membrane process are widely used for converting salt water into fresh water. However, those conventional technologies require high energy and operation cost, and it is necessary to develop an alternative desalination process that is economic and efficient. Recently, capacitive based desalination technology is considered as the promising desalination processes because of its efficient energy consumption, high volume reduction, and no additional treatment. In this study, we found battery materials which can be used for desalination process and proposed a novel capacitive based desalination technology combined with battery materials. In the desalination process, ions are harvested by the chemical reaction with battery materials, and then ions are released during regeneration step. The characteristic of battery materials was analyzed by electrochemical methods, and the desalination performance was evaluated by various factors (salt removal capacity, coulombic efficiency, etc.).

Novel capacitive desalination process using battery materials

251st National Meeting (2016)

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