Index 1305

– oxygen see oxygen delignification

– OxyTrac system 730

– ozone 777–849

– pH 473

– phases in kraft cooking 184

– pine 473

– predicted by selected model of kraft cooking

Kinetics 223

– pressure 730

– process equipment 731

– profiles within handmade chip 160

– relation to oxygen delignification

Efficiency 259

– retention time 730

– selectivity 363, 809, 815

– temperature 730

– two-stage 473, 730

– washing 826

– see also kappa number

Delignification chemistry 632

– (di)oxygen and derivatives 641–649

Delignification efficiency

– Eucalyptus saligna prehydrolysis kraft pulp

With oxygen delignification 260

– temperature effect 813

Delignification rate 802

– equation 681

– prehydrolysis effect in prehydrolysis-kraft

Process for Eucalyptus saligna 351

Delignification reactions, selectivity 838

DeltaCombi, Metso 603

DeltaScreen, Metso 602

Demethylation reaction, lignin 169

Density

– black liquor 971

– crystallinity 1262

– dissolving pulp characterization 1062

– hydrogen peroxide 851

– white liquor 116

– wood species 127–128

Dentated discs 92

– chip screens 91

Deoxy-hexoses, hemicelluloses 28

Deoxypentonic acid, black liquor

Composition 968

Depolymerization reactions 937

Design principles, contaminant removal and

fractionation systems 594–596

Detrimental effect, viscosity 814

Dewatering

– compressive 517, 525–526

– press 827

– time 1283

DF see dilution factor

DI see crystallinity, degree of

Diacetate filterability 1028