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Titolo:
Modeling of soluble microbial products in anaerobic digestion: The effect of feed strength and composition
Autore:
Barker, DJ; Stuckey, DC;
Indirizzi:
Univ London Imperial Coll Sci Technol & Med, Dept Chem Engn & Chem Technol, London SW7 2BY, England Univ London Imperial Coll Sci Technol & Med London England SW7 2BY gland
Titolo Testata:
WATER ENVIRONMENT RESEARCH
fascicolo: 2, volume: 73, anno: 2001,
pagine: 173 - 184
SICI:
1061-4303(200103/04)73:2<173:MOSMPI>2.0.ZU;2-H
Fonte:
ISI
Lingua:
ENG
Soggetto:
WASTE-WATER; SMP; CHEMOSTATS; REACTORS; SYSTEMS;
Keywords:
anaerobic digestion; soluble microbial products; kinetic modelling; carbon-14 experiments; use-associated products; biomass-associated products; glucose; glycerol; lactic acid; starch;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Engineering, Computing & Technology
Citazioni:
25
Recensione:
Indirizzi per estratti:
Indirizzo: Stuckey, DC Univ London Imperial Coll Sci Technol & Med, Dept Chem Engn & Chem Technol, London SW7 2BY, England Univ London Imperial Coll Sci Technol& Med London England SW7 2BY
Citazione:
D.J. Barker e D.C. Stuckey, "Modeling of soluble microbial products in anaerobic digestion: The effect of feed strength and composition", WAT ENV RES, 73(2), 2001, pp. 173-184

Abstract

Continuously stirred tank reactors (CSTRs) and fill-and-draw reactors wereused to investigate soluble microbial product (SMP) production during anaerobic digestion. Continuously stirred tank reactors with a glucose feed at three different strengths (5, 10, and 20 g chemical oxygen demand [COD]/L) and fill-and-draw reactors with four different feed compositions (glucose, glycerol, lactic acid, and starch at 10 g COD/L) were used with a solids retention rime (SRT) of 15 days. The SMP production ranged from 102 to 588 mgCOD/L for the glucose-fed CSTRs and between 157 and 1192 mg COD/L for the fill-and-draw reactors and was found to increase with increasing influent COD (S-O). Normalized production of SMPs (SMP/S-O) ranged from 1.4 to 3% forthe CSTRs and 12.0, 1.7, 14.7, and 3.6% for the glucose-, glycerol-, lactic acid-, and starch-fed reactors, respectively. A model incorporating SMP production and degradation was fitted to results from carbon-14 tracer studies in all of the reactors. The best-fit parameters from this model revealedthat the type of SMP that dominates in any particular system depends not only on the strength of the feed but also on the composition of the feed andthe type of reactor.

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Documento generato il 11/07/20 alle ore 18:30:39