▎ 摘　　要

NOVELTY - Carbon dioxide is processed by preparing water dispersion containing magnesium hydroxide, contacting water dispersion and gas containing carbon dioxide, and reacting magnesium hydroxide and carbon dioxide. Water dispersion contains 10-40 wt.% acetonitrile. USE - The method is useful for processing carbon dioxide. ADVANTAGE - Processing speed of carbon dioxide can be adjusted. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for water dispersion used in the processing method of carbon dioxide, comprising water, magnesium hydroxide, and 10-40 wt.% acetonitrile.