Pengaruh Waktu Tinggal Pulp di Menara Ep2 terhadap Tingkat Brightness pada Proses Bleaching di Pt. Toba Pulp Lestari,Tbk Porsea

Abstract

Bleaching process step in EP2 (extraction perokside) is of part the step brightness process pulp with to use chemical material H2O2 to in crease stage brightness pulp. With range consestation pulp 10 – 12 %. In step this time needed hunged in stock flow and to use chemical material the other, the method field practice that to get data with calculation, if the more with the stock flow, that the more time in needed and the other way. Where the brightness stage the step EP2 can attain ≥ 88 % ISO. One of the used appliance in PT.Toba Pulp Lestari,Tbk for the examination of brightness of pulp is by using appliance of Electronic Refracto Photometer (ELREPHO).