Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Analysis of retention time distribution (RTD) curves in an anaerobic digester with confined-gas mixing using a compartment model
Autore:
Bello-Mendoza, R; Sharratt, PN;
Indirizzi:
Univ Manchester, Inst Sci & Technol, Dept Chem Engn, Environm Technol Ctr,Manchester M60 1QD, Lancs, England Univ Manchester Manchester Lancs England M60 1QD M60 1QD, Lancs, England
Titolo Testata:
WATER SCIENCE AND TECHNOLOGY
fascicolo: 8, volume: 40, anno: 1999,
pagine: 49 - 56
SICI:
0273-1223(1999)40:8<49:AORTD(>2.0.ZU;2-C
Fonte:
ISI
Lingua:
ENG
Soggetto:
PERFORMANCE; REACTORS;
Keywords:
anaerobic sludge digester; compartment mixing model; confined-gas mixing; hydrodynamics; mathematical modelling; retention time distribution;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
15
Recensione:
Indirizzi per estratti:
Indirizzo: Bello-Mendoza, R Univ Manchester, Inst Sci & Technol, Dept Chem Engn, Environm Technol Ctr,POB 88, Manchester M60 1QD, Lancs, England Univ ManchesterPOB 88 Manchester Lancs England M60 1QD d
Citazione:
R. Bello-Mendoza e P.N. Sharratt, "Analysis of retention time distribution (RTD) curves in an anaerobic digester with confined-gas mixing using a compartment model", WATER SCI T, 40(8), 1999, pp. 49-56

Abstract

Stimulus-response experiments were conducted in a continuous vessel with asingle, centrally mounted draft-tube. The obtained retention time distribution curves were then analysed using conventional methods. These resulted in contradictory interpretation of the experimental data. To overcome this problem, a compartment model was developed to represent the mixing behaviourof this type of system This mixing model consists of an ideally mixed compartment around the uptake tube and two cascades of tanks-in-series describing the circulation flow. The adjustable parameters of the model are the volume of the ideally mixed compartment, the circulation time and the number of tanks in each circulation loop. These parameters were estimated by fitting simulations to experimental mixing curves. The model consistently described the improvement of mixing with volumetric power input. Furthermore, the correlations found between power input and model parameters allowed the prediction of independently measured pulse-response curves rather well. The proposed compartment model brings the prospect of coupling microbial kineticsto reactor hydraulics to quantify the impact of mixing on the performance of anaerobic sludge digesters. (C) 1999 Published by Elsevier Science Ltd on behalf of the IAWQ. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 10/07/20 alle ore 10:46:32