公开(公告)号：US10604894B2

公开(公告)日：2020-03-31

申请号：US15808125

申请日：2017-11-09

Applicant: Korea Institute Of Geoscience And Mineral Resources

Inventor： Chi-Wan Jeon ,  Sang-Won Park ,  Jun-Hwan Bang ,  Kyung-Sun Song ,  Seung-Woo Lee ,  Hwan-Ju Jo

IPC: D21C11/00 ,  D21H17/70

Abstract: The present invention provides a method of carbonating carbon dioxide with high purity using a paper mill waste sludge by preparing a paper mill waste sludge which is a waste product discharged during the production of papermaking, adding acid to the paper mill waste sludge and reacting the acid therewith to produce a mixed solution and stirring, separating a supernatant of the mixed solution into an eluate, adding a basic substance to the eluate and adjusting pH to precipitate some of the ions in the eluate, and then adding a reaction initiator to the eluate in which some ions are precipitated and removed, and injecting carbon dioxide for a carbonation reaction.