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Titolo:
Kinetics of wet air oxidation of wastewater from natural fiber web desizing
Autore:
Lei, LC; Liu, G; Cen, PL;
Indirizzi:
Zhejiang Univ, Dept Chem Engn, Hangzhou 310027, Peoples R China Zhejiang Univ Hangzhou Peoples R China 310027 ou 310027, Peoples R China
Titolo Testata:
CHINESE JOURNAL OF CHEMICAL ENGINEERING
fascicolo: 2, volume: 8, anno: 2000,
pagine: 140 - 145
SICI:
1004-9541(200006)8:2<140:KOWAOO>2.0.ZU;2-3
Fonte:
ISI
Lingua:
ENG
Soggetto:
REACTION PATHWAYS; WATER; ACID;
Keywords:
reaction kinetic; textile wastewater; wet air oxidation; wastewater treatment;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
15
Recensione:
Indirizzi per estratti:
Indirizzo: Cen, PL Zhejiang Univ, Dept Chem Engn, Hangzhou 310027, Peoples R China Zhejiang Univ Hangzhou Peoples R China 310027 7, Peoples R China
Citazione:
L.C. Lei et al., "Kinetics of wet air oxidation of wastewater from natural fiber web desizing", CHIN J CH E, 8(2), 2000, pp. 140-145

Abstract

This work described the application of wet air oxidation (WAO) to the treatment of desizing wastewater from natural fiber processing. A two-liter autoclave batch reactor was used for the experiments. The range of operating temperature examined was between 150 and 290 degrees C, and partial pressureof oxygen ranged from 0.375 to 2.25 MPa standardized at 25 degrees C. Variations in Chemical Oxygen Demand(COD) and Total Organic Carbon(TOC) were monitored during each experiment and used to assess the performance of the process. Experimental results showed that WAO can be an efficient method for the treatment of desizing wastewater. Furthermore, Catalytic Wet Air Oxidation (CWAO) was applied to reduce the reaction temperature and pressure in WAO process. A higher COD removal ratio was achieved under more mild reaction condition with the aid of CWAO. A mathematical model was also proposed tosimulate the WAO process of desizing wastewater, in which three distinct kinetics steps were considered to describe the degradation of starch. The model simulations were in well agreement with the experimental data.

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Documento generato il 26/09/20 alle ore 17:34:37