Method of carbonating carbon dioxide using paper mill waste sludge elution

摘要

The present invention relates to a method for preparing papermaking sludge, which is a waste product discharged during papermaking (step 1); Adding acid to the paper sludge and reacting to produce and stir the mixed solution (second step); Separating the supernatant of the mixed solution into an effluent (third step); And a step of adding a reaction initiator to the effluent and carbonating the carbon dioxide by injecting carbon dioxide (Step 4). The carbonation method using carbon dioxide and paper sludge eluate is also provided. Therefore, it is possible to reduce the amount of alkaline paper sludge, which is an environmental waste generated in pulp or paper making process, by 80% or more, and carbon dioxide generated in the paper making process can be carbonated and stored. Therefore, .