Polychlorinated dioxins, effluent content
Polychlorinated phenols, adsorbable organic
Compounds 771
Polydispersity
– changes 1059
– degradation reaction 685
– index 844, 1018
Polyelectrolytes, osmotic pressure 1245
Polylignol, lignin 31
Polymer components, plant fibers 1257
Polymeric compounds, pulp 1227
Polymerization, degree of see also DP, 952,
1229, 1239
Polymerized lignin, hydrogen peroxide 853
Polymers
– cell wall 30
– fractionation 1252
– instability 1038
– phenolic 31
– precipitation 1252
– wood 1018
Polynosic-type fiber, wet tenacity 1027
Polyoses
– conversion products 1233
– pulp bleaching 1123
Polyoxometalates, alternative bleaching
Methods 887
polysaccharide chain, cleavage 662–666
Polysaccharide degradation 796, 841
Polysaccharides
– composition 1231–1234
– fractionation 1230
– peeling reactions 661
– treatment with aqueous acidic compounds
– wood 30
polysulfide 195, 201–202, 211
– disproportionation kinetics 307–308
Polysulfide addition, effect on CBC
impregnation liquor 290–293
Polysulfide ions, formation under kraft
Cooking conditions 185
Polysulfide liquor 306
Polysulfide pretreatment, yield increase as
Function of redox potential 310
polysulfide pulping 306–316
– combined effects of PS and AQ pulping
314–316
– mill experience 314
POM see polyoxometalates
Ponderosa pine, average moisture content
Poplar
– lignin weight fractions 213
– radial diffusion coefficient 144
Populus
– average cell dimensions 52
– inorganic composition 40
– pulp bleaching 1126
– steroids 37
Populus deltoides carolinensis, radial diffusion
Coefficient 144
Populus rubrum, kinetic parameters for xylan
Water prehydrolysis 333
Populus tremula
– chemical composition 451
– density and void volume 128
Populus tremuloides
– comparison of experimental data with
diffusion model 153–154
– hemicelluloses, nonglucosic units 29
– kinetic parameters for xylan water
Prehydrolysis 333
pores 1265–1267
– collapse 1054
– structure, cell wall 1052–1056
Porosity 1266
– as function of fiber concentration 514
Porous woods, vessels 53
Portal cranes, log handling 97
Positive sorting, recovered paper 1188
post-consumer recovered paper 1177–1180
Post-oxygen washing 731
Post-treatment with peracetic acid, effect on
Brightness 883
Pourbaix diagram, AQ redox equilibria 317
Power dissipation, as function of pulp
Consistency 615
pre-consumer recovered paper 1177–1180
Pre-heated air, kraft recovery boiler 985
Pre-steaming, kraft cooking pretreatment
Pre-thickening, kraft black liquors 975
Precipitation
– pulp resins 1031
– xylan 1050
Prehydrolysis
– general discussion 325–345
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