Klorin dioksida (CIO2) is a chemical used as a bleaching agent in the pulp bleaching process. At PT RAPP's Integrated CIO2 Plant, CIO2 solution with a concentration of 10 ± 0.2 g/L is obtained through the CIO2 gas absorption process, with chilled water as the absorbent in the absorber. The concentration of the desired solution is determined by how efficiently the absorption process occu…