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Titolo:
Effect of hydraulic loading rate on acidogenesis in a membrane-coupled anaerobic VFAs fermenter
Autore:
Kim, JO; Somiya, I;
Indirizzi:
Kyoto Univ, Grad Sch Engn, Dept Environm Engn, Sakyo Ku, Kyoto 6068501, Japan Kyoto Univ Kyoto Japan 6068501 ronm Engn, Sakyo Ku, Kyoto 6068501, Japan
Titolo Testata:
ENVIRONMENTAL TECHNOLOGY
fascicolo: 1, volume: 22, anno: 2001,
pagine: 91 - 99
SICI:
0959-3330(200101)22:1<91:EOHLRO>2.0.ZU;2-#
Fonte:
ISI
Lingua:
ENG
Soggetto:
WASTE-WATER TREATMENT; PRIMARY SLUDGE; ACID-PHASE; DIGESTION; GLUCOSE;
Keywords:
hydraulic loading rate; acidogenesis; membrane-coupled anaerobic VFAs fermenter; coagulated raw sludge; volatile fatty acids (VFAs);
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
19
Recensione:
Indirizzi per estratti:
Indirizzo: Kim, JO Kyoto Univ, Grad Sch Engn, Dept Environm Engn, Sakyo Ku, Kyoto 6068501, Japan Kyoto Univ Kyoto Japan 6068501 n, Sakyo Ku, Kyoto 6068501, Japan
Citazione:
J.O. Kim e I. Somiya, "Effect of hydraulic loading rate on acidogenesis in a membrane-coupled anaerobic VFAs fermenter", ENV TECHNOL, 22(1), 2001, pp. 91-99

Abstract

A membrane-coupled anaerobic VFAs fermenter (MCAVF) was operated with fivedifferent hydraulic loading rates (3, 2, 1, 0.5 and 0.25 day(-1)) to evaluate its influence on acid phase VFAs production from coagulated raw sludge. Results show that C-2 to C-s volatile fatty acids were formed as predominant compounds. At constant solids retention time (SRT) of 10 days, VFAs production ratio moderately increased over the range of hydraulic loading rate (HLR) of 3 day(-1) to 2 day(-1), but significantly decreased at other HLR conditions. First order hydrolysis rate constant decreased with a decrease in HLR. The relatively high degradation percentages of carbohydrate and protein were observed, ranging from 25 to 47%, 27 to 47%, respectively. However, lipid and fiber component were degraded at much lower ratio than the previous other two organic materials. On the other hand, despite some variationin the minor acids in five HLR cases, VFAs speciation appeared to be independent of HLR. The results obtained emphasize that; at least in the range investigated, the optimal HLR for VFAs production and recovery from coagulated raw sludge is in the range of 2 day(-1) and 1 day(-1).

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 27/09/20 alle ore 00:47:52