Functions, advantages and disadvantages of bleaching chemicals Chemical Function Pul Advantage disadvantag p es Oxidize and Low chemical Requires significant solubilize lignin cost; provides capital equipment chlorine-free when used in large effluent for amounts potential recovery loss of pulp strength H2O2 Oxidize and C or Easy to use; High chemical decolorⅰze M Low capital cost: Poor lignin cost particle bleaching Can cause loss of pulp strength O3 Oxidize Effective Must be made decolorize and provides on-site: cost: poor solubilize lignin chlorine-free particle bleaching effluent for and pulp strength recoveryChemical Function Pul p Advantage s disadvantag es O2 Oxidize and solubilize lignin C Low chemical cost; provides chlorine-free effluent for recovery Requires significant capital equipment when used in large amounts; potential loss of pulp strength H2O2 Oxidize and decolorize lignin C or M Easy to use; Low capital cost High chemical cost; Poor particle bleaching; Can cause loss of pulp strength O3 Oxidize, decolorize and solubilize lignin C Effective, provides chlorine-free effluent for recovery Must be made on-site; cost; poor particle bleaching and pulp strength Functions, advantages and disadvantages of bleaching chemicals