Peracetic acid

– demand 881

– equilibrium 881

– oxidation capacity 613

– oxidation equivalents (OXE) 264

– post-treatment 883

– pulp bleaching 880

Perforation plates, patterns 53

Permanganate demand, hot acid hydrolysis

permanganate number 1228–1229

Permeability 513

– as function of fiber concentration 514

peroxide bleaching 1132, 1134–1135

– catalyzed 877

– ozonation 1038

– pressurized 866–867

Peroxide solutions, stablity in water 863

Peroxide stage, residence time 865

Peroxide-supported extraction stages,

Temperature effect 865

PGW see pressure groundwood

PH

– acid sulfite cooking liquor analysis 433

– oxygen delignification 704–705

– pine delignification 473

– profile 728

– pulp washing parameter 533–534

– Rauma three-stage sulfite cook 471

– sorbed sodium 520

– spruce pulp yield and acetyl content 474

– sulfite pulping processes 393

– temporal development in AS/AQ pine

Pulping 479

pH effect, ozone bleaching 811–812

PH fall during bleaching, oxidation

Processes 863

Phase transformation model, kappa

Numbers 684

Phases, cellulose I 26

Phenolate Peracetic acid anions 703

Phenolic compounds

– absorbance spectra 58

– hardwoods 38

– softwoods 37

Phenolic coupling, hydroxyl radical adducts of

Aromatic structures 654

Phenolic extractives, topochemical

distribution 61–63

Phenolic hydroxyl

– content in lignin samples 636

– content in residual lignin 263

– relative reactivity 635

Phenolic hydroxyl groups

– bleaching 848

– in lignin fractions 173

Phenolic lignin subunits

– carbohydrate degradation 795

– chemistry 164

– chromophore formation 172

– structure 164

Phenolic phenylcoumaran structures 411

Phenolic phenylcoumarans, neutral sulfite

Pulping reactions 413

Phenolic pinoresinol structures 410

– neutral sulfite pulping reactions 414

Phenolic polymer, lignin 31

Phenolic structures, hydroperoxide

Formation 652

Phenols

– in condensation reactions 424–425

– ionization 703

Phenoxyl radical

– chlorine bleaching 746

– formation by oxygen or by hydroxyl radical

Phenylcoumaran structures, phenolic 411

Phenylpropane a-carbonyl-b-arylether

Structures, sulfonation 412

Phenylpropane building blocks, lignin 32

Phenylpropanols 858

Phenylpropanones 858

Phenylpropene unit 2, HOMO- and electron

Density distribution 633

PHK process Peracetic acid 11, 345–365, 816

– development 7

– dissolving pulp 1024

– influence of process conditions 351–358

– influence of wood species 358–365

– lignin and xylan removal rate 348

– see also prehydrolysis

PHK pulp

– purification effidency 942

– selectivity 838

Index 1331

Phosphate ion, ozone decomposition,

Promotor 789

Photochemical oxidation, lignin models 655

Photodegradation, a-carbonyl groupcontaining

Lignin model compounds 655

Photometric methods, metal ions

Determination 1222

Photometry, operating principle 1221

Photosensitized degradation, loblolly pine

(Pinus taeda) 656


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