ONE DEINKING PLANT’S EXPERIENCE WITH DIRECT BOROHYDRIDE INJECTION FOR THEREDUCTIVE BLEACHING OF MIX OFFICE PAPERS

摘要

Direct Borohydride Injection (DBI) as the reductive bleaching stage for deinked pulp is a recent change in bleachingstrategies. During one mill’s efforts to optimize DBI, several studies were completed to understand the effects ofvarious operating parameters on brightness and color indices of the pulp. This paper reviews those studies and theconclusions reached regarding the optimization of DBI.