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Titolo:
Evaluation of the treatment performance of a multistage ozone/hydrogen peroxide process by decomposition by-products
Autore:
Kosaka, K; Yamada, H; Shishida, K; Echigo, S; Minear, RA; Tsuno, H; Matsui, S;
Indirizzi:
Kyoto Univ, Res Ctr Environm Qual Control, Shiga 5200811, Japan Kyoto Univ Shiga Japan 5200811 vironm Qual Control, Shiga 5200811, Japan Takuma Co Ltd, Amagasaki, Hyogo 6600806, Japan Takuma Co Ltd Amagasaki Hyogo Japan 6600806 agasaki, Hyogo 6600806, Japan Univ Illinois, Dept Civil & Environm Engn, Urbana, IL 61801 USA Univ Illinois Urbana IL USA 61801 l & Environm Engn, Urbana, IL 61801 USA
Titolo Testata:
WATER RESEARCH
fascicolo: 15, volume: 35, anno: 2001,
pagine: 3587 - 3594
SICI:
0043-1354(200110)35:15<3587:EOTTPO>2.0.ZU;2-F
Fonte:
ISI
Lingua:
ENG
Soggetto:
HYDROGEN-PEROXIDE; OZONE; WATER; OXIDATION;
Keywords:
ozone/hydrogen peroxide process; multistage injection system; TOC removal; ozone; hydroxyl radical; humic acid; sand filtered secondary sewage effluent; oxalic acid;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
15
Recensione:
Indirizzi per estratti:
Indirizzo: Kosaka, K Kyoto Univ, Res Ctr Environm Qual Control, 1-2 Yumihama, Shiga 5200811, Japan Kyoto Univ 1-2 Yumihama Shiga Japan 5200811 higa 5200811, Japan
Citazione:
K. Kosaka et al., "Evaluation of the treatment performance of a multistage ozone/hydrogen peroxide process by decomposition by-products", WATER RES, 35(15), 2001, pp. 3587-3594

Abstract

The performance of a multistage ozone/hydrogen peroxide (O-3/H2O2) processwas evaluated with respect to total organic carbon (TOC) removal of waste waters, An aqueous humic acid solution (5.2 mg Cl-1 as TOC) and a sand filtered secondary sewerage effluent (5.6 mg Cl-1 as TOC) were used as model waste waters. Appropriate range of hydrogen peroxide (H2O2) dose at each stage depended upon the components of the tested solutions that changed as the process proceeded. Higher hydrogen peroxide dose was required at later stages in which low reactivity compounds with hydroxyl radical (HOcircle), low molecular fatty acids, were predominant. And, oxalic acid concentration related to H2O2 demand at later stages. This was assumed that the slow decomposition of oxalic acid was rate-determining step for TOC removal after its accumulation, Also, it is important to maintain dissolved ozone at low concentration for efficient TOC removal because rapid ozone consumption is required for the rapid formation of hydroxyl radical (HOcircle). (C) 2001 Elsevier Science Ltd. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 03/07/20 alle ore 00:32:52