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Titolo:
ETHANOL-PRODUCTION FROM SPENT SULFITE LIQUOR FORTIFIED BY HYDROLYSIS OF PULP-MILL PRIMARY CLARIFIER SLUDGE
Autore:
MORITZ JW; DUFF SJB;
Indirizzi:
UNIV BRITISH COLUMBIA,CTR PULP & PAPER,2216 MAIN MALL VANCOUVER BC V6T 1Z4 CANADA UNIV BRITISH COLUMBIA,CTR PULP & PAPER VANCOUVER BC V6T 1Z4 CANADA UNIV BRITISH COLUMBIA,DEPT CHEM ENGN VANCOUVER BC V6T 1Z4 CANADA
Titolo Testata:
Applied biochemistry and biotechnology
, volume: 57-8, anno: 1996,
pagine: 689 - 698
SICI:
0273-2289(1996)57-8:<689:EFSSLF>2.0.ZU;2-X
Fonte:
ISI
Lingua:
ENG
Soggetto:
ENZYMATIC-HYDROLYSIS; FUEL ETHANOL; CELLULOSE; BIOMASS;
Keywords:
SSF; PRIMARY CLARIFIER SLUDGE; ETHANOL PRODUCTION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
12
Recensione:
Indirizzi per estratti:
Citazione:
J.W. Moritz e S.J.B. Duff, "ETHANOL-PRODUCTION FROM SPENT SULFITE LIQUOR FORTIFIED BY HYDROLYSIS OF PULP-MILL PRIMARY CLARIFIER SLUDGE", Applied biochemistry and biotechnology, 57-8, 1996, pp. 689-698

Abstract

Some low-yield sulfite pulping operations ferment spent sulfite liquor (SSL) to remove biochemical oxygen demand associated with dissolved sugars while at the same time generating ethanol as a salable product. Simultaneous saccharification and fermentation (SSF) of primary clarifier sludge in a medium of SSL was proposed as a means of reducing theamount of sludge to be disposed of while at the same time increasing ethanol productivity. In this article, the option of fortifying existing SSL fermenting precesses with the sugars produced via in situ enzymatic hydrolysis of sulfite primary clarifier sludge (PCS) has been explored. In 100% SSL PCS hydrolysis rates as high as 3.4 g/(L . h) were observed at an initial enzyme loading of 10 filter paper. units (FPU)/g PCS. To reduce the deleterious effects of glucose inhibition, single-stage SSF was carried out using cellulase enzymes and Saccharomyces cerevisiae. The production rate of ethanol in SSL was increased by as much as 25% through the SSF process.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 30/09/20 alle ore 12:00:50