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Titolo:
Precipitation conditions of aluminosilicate scales in the recovery cycle of kraft pulp mills - Increasing NaOH and Na2S boosts the solubility limits of Al and Si
Autore:
Park, H; Englezos, P;
Indirizzi:
UBC, Dept Biol & Chem Engn, Vancouver, BC, Canada UBC Vancouver BC Canada BC, Dept Biol & Chem Engn, Vancouver, BC, Canada UBC, Ctr Pulp & Paper, Vancouver, BC, Canada UBC Vancouver BC CanadaUBC, Ctr Pulp & Paper, Vancouver, BC, Canada
Titolo Testata:
PULP & PAPER-CANADA
fascicolo: 2, volume: 102, anno: 2001,
pagine: 20 - 24
SICI:
0316-4004(200102)102:2<20:PCOASI>2.0.ZU;2-A
Fonte:
ISI
Lingua:
ENG
Soggetto:
OSMOTIC COEFFICIENT DATA; ALKALINE-SOLUTIONS; ISOPIESTIC METHOD; MODEL;
Keywords:
deposits; corrosion; kraft mills; chemical recovery; aluminum silicates; sodium silicate; precipitates; green liquors; white liquors;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
17
Recensione:
Indirizzi per estratti:
Indirizzo: Englezos, P UBC, Dept Biol & Chem Engn, Vancouver, BC, Canada UBC Vancouver BC Canada l & Chem Engn, Vancouver, BC, Canada
Citazione:
H. Park e P. Englezos, "Precipitation conditions of aluminosilicate scales in the recovery cycle of kraft pulp mills - Increasing NaOH and Na2S boosts the solubility limits of Al and Si", PULP PAPER, 102(2), 2001, pp. 20-24

Abstract

The build-up of non-process elements such as Al and Si ions is known to cause sodium aluminosilicate scale formation in the recovery cycle of kraft pulp mills. Formation of these scales should be prevented. This study provides data on the precipitation conditions of sodium aluminosilicate scales inmill green and white liquors at 95 degreesC. The precipitates were found to have the structure of hydroxysodalite dihydrate (Na-8(AlSiO4)(6)(OH)(2)(2H(2)O). A thermodynamics-based model for sodium aluminosilicate formation in mill liquors was also employed to predict these precipitation conditions and compare with the experimental data.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 26/09/17 alle ore 09:13:32