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Titolo:
The kinetics of dissolution of colemanite in H3PO4 solutions
Autore:
Temur, H; Yartasi, A; Copur, M; Kocakerim, MM;
Indirizzi:
Ataturk Univ, Dept Chem Engn, Fac Engn, Erzurum, Turkey Ataturk Univ Erzurum Turkey , Dept Chem Engn, Fac Engn, Erzurum, Turkey
Titolo Testata:
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
fascicolo: 11, volume: 39, anno: 2000,
pagine: 4114 - 4119
SICI:
0888-5885(200011)39:11<4114:TKODOC>2.0.ZU;2-S
Fonte:
ISI
Lingua:
ENG
Soggetto:
WATER;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
14
Recensione:
Indirizzi per estratti:
Indirizzo: Copur, M Ataturk Univ, Dept Chem Engn, Fac Engn, Erzurum, Turkey Ataturk Univ Erzurum Turkey em Engn, Fac Engn, Erzurum, Turkey
Citazione:
H. Temur et al., "The kinetics of dissolution of colemanite in H3PO4 solutions", IND ENG RES, 39(11), 2000, pp. 4114-4119

Abstract

The dissolution kinetics of colemanite in phosphoric acid solutions was studied. The effects of particle size, temperature, acid concentration, solid-to-liquid ratio, and stirring speed on the dissolution rate were determined. It was observed that the dissolution rate increased with decreasing particle size and solid-to-liquid ratio and with increasing temperature, but stirring speed had no effect on it. The dissolution rate increased up to an acid concentration of 19.52% (by wt) and then decreased with increasing acidconcentration. The dissolution kinetics of colemanite were examined according to the heterogeneous and homogeneous reaction models for the acid concentration range of 1.43-19.52% (by wt) of acid concentration, and it was found that the dissolution rate was controlled by surface chemical reaction. The activation energy of this process was determined to be 53.91 kJ mol(-1).

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 18/09/20 alle ore 17:17:58