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Titolo:
OXIDATION OF AQUEOUS SULFUR-DIOXIDE IN SUSPENSIONS OF MAGNESIUM-OXIDE- REMOVAL OF SO2 FROM FLUE-GASES
Autore:
BHARGAVA R; RANI A; GUPTA KS;
Indirizzi:
UNIV RAJASTHAN,DEPT CHEM JAIPUR 302004 RAJASTHAN INDIA UNIV RAJASTHAN,DEPT CHEM JAIPUR 302004 RAJASTHAN INDIA
Titolo Testata:
Indian journal of chemistry. Sect. A: Inorganic, physical, theoretical & analytical
fascicolo: 8, volume: 32, anno: 1993,
pagine: 713 - 716
SICI:
0376-4710(1993)32:8<713:OOASIS>2.0.ZU;2-9
Fonte:
ISI
Lingua:
ENG
Soggetto:
CATALYZED AUTOXIDATION; SULFUR-DIOXIDE; DISSOLUTION; DYNAMICS;
Tipo documento:
Note
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
23
Recensione:
Indirizzi per estratti:
Citazione:
R. Bhargava et al., "OXIDATION OF AQUEOUS SULFUR-DIOXIDE IN SUSPENSIONS OF MAGNESIUM-OXIDE- REMOVAL OF SO2 FROM FLUE-GASES", Indian journal of chemistry. Sect. A: Inorganic, physical, theoretical & analytical, 32(8), 1993, pp. 713-716

Abstract

The kinetics of oxidation of aqueous SO2 in acetate buffered suspensions of MgO obeys rate law (i) R(obs) = k{MgO][S(IV)2[H+]-1 ...(i) and the main oxidation product is sulphate. The suggested mechanism involves the formation of surficial complexes between hydroxylated magnesiumand S(IV). There exists a close parallelism between R(obs) and pH of zero point charge, pH(ZPC), for CdO, MgO and SiO2. The results suggestthat in wet-scrubbers, which utilize the slurries of MgO for removal of SO2 fro the flue gases, the sulphite formed as a result of SO2 absorption will be oxidized by atmospheric oxygen to sulphate, the extent of which will increase with increase in pH, temperature, slurry density and absorbed SO2.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 19/09/20 alle ore 12:10:21