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http://dx.doi.org/10.4491/KSEE.2017.39.3.149

Capture and Ocean Storage of Carbon Dioxide Using Alkaline Wastes and Seawater  

Lee, Junghyun (Korea Electric Power Corporation Research Institute)
Park, Misun (Korea Electric Power Corporation Research Institute)
Joo, Jisun (Korea Electric Power Corporation Research Institute)
Gil, Joon-Woo (Korea Electric Power Corporation Research Institute)
Publication Information
Journal of Korean Society of Environmental Engineers / v.39, no.3, 2017 , pp. 149-154 More about this Journal
Abstract
We investigate the availability of $CO_2$ ocean storage by means of chemical conversion of $CO_2$ to the dissolved inorganic carbon (mainly the bicarbonate ion) in seawater. The accelerated weathering of limestone (AWL) technique, which is accelerating the natural $CO_2$ uptake process through the chemical conversion using limestone and seawater, was proposed as an alternative method for reducing energy-related $CO_2$ emission. The method presented in this paper is slightly different from the AWL method. It involves reacting $CO_2$ with seawater and quicklime obtained from alkaline wastes to produce the bicarbonate-rich solution over 100 times more than seawater, which could be released and diluted into the ocean. The released dense bicarbonate-enriched water mass could subside into the deeper layer because of the density flow, and could be sequestrated stably in the ocean.
Keywords
Carbon Capture; Ocean Storage of Carbon Dioxide; Bicarbonate Ions; Alkaline Wastes; Accelerated Weathering of Limestone;
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