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Titolo:
Foundation of kinetics model for TiO2-photocatalyzed degradation of organic compounds in suspending system
Autore:
Zuo, YJ; Xi, HL; Zhang, JH; Li, ZJ; Zhou, F;
Indirizzi:
Peoples Liberat Army, Acad Chem Def, Beijing 102205, Peoples R China Peoples Liberat Army Beijing Peoples R China 102205 205, Peoples R China
Titolo Testata:
CHINESE JOURNAL OF CATALYSIS
fascicolo: 2, volume: 22, anno: 2001,
pagine: 198 - 202
SICI:
0253-9837(200103)22:2<198:FOKMFT>2.0.ZU;2-T
Fonte:
ISI
Lingua:
CHI
Soggetto:
WATER;
Keywords:
titania; photocatalytic degradation; O; S-dimethyl acetyl phosphoramidothioate; light intensity; reaction kinetics model;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
13
Recensione:
Indirizzi per estratti:
Indirizzo: Xi, HL Peoples Liberat Army, Acad Chem Def, Beijing 102205, Peoples R China Peoples Liberat Army Beijing Peoples R China 102205 oples R China
Citazione:
Y.J. Zuo et al., "Foundation of kinetics model for TiO2-photocatalyzed degradation of organic compounds in suspending system", CHIN J CATA, 22(2), 2001, pp. 198-202

Abstract

With O, S-dimethyl acetyl phosphoramidothioate(DMAPT) as objective compound, the kinetics model for TiO2-photocatalyzed degradation in suspending system was studied in DGF-1 model photochemistry reaction instrument. The mainparameters involved in the model are TIO dosage, effective light intensity, geometrical radius and empirical parameter of the reactor, initial concentration of the reactant, rate constants of the second-order reaction of OH.radical, and physical properties of the reactant(such as molar volume and aqueous solubility). The different DMAPT concentrations were used to validate the funtion. The model preferably predicted the photocatalytic degradation of other compounds, such as trichloroethylene (TCE), tetrachloroethylene(PCE), p-dichlorobeneze(DCB) and carbon tetrachloride (CTC). For the systemwith C-0(TCE) = 22. 1 mg/L, C-0(PCE) = 20 mg/L, C-0(DCB) = 40 mg/L, the time needed for complete degradation is 3, 4 and 5 min respectively. The reaction rate is proportional to the half-order of incident light intensity within the range of 1. 38 similar to 6. 05 W/cm(2). The optimum catalyst dosage increases with increasing the incident light intensity.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 01/12/20 alle ore 21:57:11