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Index 1307

processability 1023

quality profile 1023

representative 1036

structural parameters 1043

dithionite, pulp bleaching 1124–1126

DMA/LiCl, cellulose molecular weight

determination 1240

DOC degradation during oxygen

delignification 692

domains, crystalline 1257

Donnan theory 393

pulp washing 521

double disc refiner 1105

concept 1107

Douglas fir

average moisture content 125

chemical composition of wood 23

lignin weight fractions 213

spiral thickenings 44

downflow reactors

atmospheric 624–625

low consistency discharge 625

downflow single-vessel hydraulic digester, Lo-

Solids™ process 390

DP 25, 1020, 1036, 1058

alkali cellulose 1057

carbohydrate degradation in kraft cooking

kinetics models 193–197

carbohydrates 174–175

cellulose 42, 256, 935

cellulose acid hydrolysis 416

cellulose chain scissions 216–217

degree of packing 428

dissolving pulp characterization 1061

hemicelluloses 28

polymer fractionation 1252

reduction in cellulose acid hydrolysis 416

water prehydrolyzate neutral sugar

fraction 340

see also polymerization, degree of

DPM 165, 167–168, 173, 638, 656

structure and relative oxygen susceptibility

640

structures 713

DR 115–116

see also displacement ratio, reduction

efficiency

drag force, on settling particle 581

drainage, pulp washing theory 513–516

drainage resistance

pulp 1281–1283

specific 515

drainage time, pulp 1283

drainage velocity equation 516

dregs, white liquor preparation processes

988

driving unit, drum debarker 74

drop-off systems, paper collection 1179–1180

drum, support 74

drum chipper 84–86

layout 86

drum debarker 72–76

drum displacer (DD), pulp washing

equipment 549–550

drum rotation speed, in relation to relative

pressure washer capacity 536

drum washers

conventional 547–549

rotary 547–550

DrumMatic™ 95–96

dry debarking 74

dry fibers

mechanical properties 1277

specific surface 1267

dry solid content 124, 129

black liquor density 971

black liquor heat capacity 972

drying, pulp weight loss 1219

DS see dry solid content

DTPA 523, 671, 821, 855, 861–862, 1126

Dual mixer, Kvaerner 620

DUALDTM process 764

DualoxTM system, two-stage delignification

730–730

Duflo impeller, Kvaerner 618

Duflo pump, Kvaerner 617

dynamic steam heater, Andritz 622

dynamic viscosity, black liquor and water 136

E

E10 see modified efficiency factor

E factor see efficiency factor

(E/O) sequence 948

(E/O) treatments, NaOH charge 953–957

E-pH plot, AQ redox equilibria 317

E/O see hot caustic extraction

EA see effective alkali

earlywood, bordered pits 47

eastern hemlock

average moisture content 125

chemical composition of wood 23

ECCSA 144–146, 148, 801

pH-dependency in Aspen 145

pulp yield dependency 146

relation to pH and pulp yield in kraft

cooking kinetics model 218

1308 Index

ECF bleaching 10, 1000

hydrogen peroxide application 868

superbatch process 281

ECF bleaching sequences

comparison 847

efficiency of chlorine dioxide 768–769

Ecocyclic pulp mill project 1007

ecological risk, chlorine dioxide bleaching

753

economizers, kraft recovery boiler 981

EDTA 670, 712–713, 821, 858, 1125–1126

EDXA see energy dispersive X-ray analysis

effective alkali 946

as function of cooking temperature and Hfactor