The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 31, 2020
Filed:
Nov. 09, 2017
Korea Institute of Geoscience and Mineral Resources, Daejeon, KR;
Chi-Wan Jeon, Daejeon, KR;
Sang-Won Park, Daejeon, KR;
Jun-Hwan Bang, Daejeon, KR;
Kyung-Sun Song, Daejeon, KR;
Seung-Woo Lee, Daejeon, KR;
Hwan-Ju Jo, Daejeon, KR;
Korea Institute of Geoscience and Mineral Resources, Daejeon, KR;
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.