Slaked lime 986

Slaker 989

slaking 987–988

slash pine, sorbed sodium–pH relation 520

Slewing screw reclaimer, chip storage 103

Sludge 1004

– wastewater treatment 1007

Smelt 982, 986

– calculation 983

– kraft recovery boiler 985

– sodium carbonate 987

Smelt dissolving 988

– weak wash 990

SO2 see sulfur dioxide

Soap skimming 967

– displacement cooking process step 371

soda-AQ 178, 194–195, 201–202, 211, 321,

– effects on Eucalyptus grandis pulping 325

– see also AQ

Soda boiler 962

Soda pulping process, discovery 6

Sodium

– comparative evaluation of diffusion

coefficients 149–150

– distribution between fiber wall and external

Solution 419

– effect on kraft cooking kinetics models

– sorption as function of pH 520

Sodium-based two-stage sulfite pulping, pHdependency

Of delignification, pulp yield

and acetyl content 473–474

Sodium borohydride

– cellulose protecting additive 819

– decomposition by hydrogen gas 1236

– post-treatment 822–824

– pulp bleaching 1125

Sodium carbonate 987

– conversion 986

Sodium chlorate, reduction 741

Sodium dithionite, commercial grades 1125

Sodium hydroxide 987

– concentration 703

Sodium peroxide, industrial bleaching 849

Sodium silicate stabilization, pulp bleaching

softening, fibers 1080–1083

Softwood fibers

– cell dimensions and chemical

Composition 4

– heterogeneity 123

Softwood kraft pulp

– comparison of different cooking