NDLI: Possibility for CO2 Sequestration Using Sea Water

Content Provider	IEEE Xplore Digital Library
Author	Wenlong Wang Mingqiang Hu Chunyuan Ma
Copyright Year	2010
Abstract	In view of the abundant calcium and magnesium ions in sea water, an approach to CO2 capture and sequestration is put forward through enhancing the alkalinity of sea water and increasing the partial pressure of CO2. The purpose of these measures is to increase the concentration of carbonate ion and then accelerate the formation of carbonate precipitation, such as CaCO3 and MgCO3. With the increase of pH, some non-target product, e.g. Mg(OH)2, may emerge and precipitate from sea water system, so there is a top limit which is found to be pH=9.25 in order to avoid this problem. Considering that it takes a long time for surface ocean water to absorb atmospheric CO2, the engineered process may accelerate the natural kinetics to industrial rates if sea water is applied to scrub flue gas. Through calculation, it is found that applying alkalinity-enhanced sea water to accelerate the formation of carbonate precipitation is a potential and promising method to capture and sequester CO2. In actual application, condensed sea water from desalination plant or high concentration brine can be introduced to react with waste CO2. Additionally, if these carbonate precipitation could be separated, the natural carbonate resources, such as limestone, would be saved to some degree.
Starting Page	1
Ending Page	4
File Size	356055
Page Count	4
File Format	PDF
ISBN	9781424447121
ISSN	21517622
DOI	10.1109/ICBBE.2010.5515390
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-06-18
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Sea surface Calcium Oceans Sea measurements Gas industry Natural gas industry Flue gases Magnesium Kinetic theory Acceleration
Content Type	Text
Resource Type	Article

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