Study of diethyl dithiophosphate adsorption on chalcopyrite and tennantite at varied phs

H. T.B.M. Petrus, Tsuyoshi Hirajima, Keiko Sasaki, H. Okamotob

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

The kinetics of diethyl dithiophosphate adsorption on chalcopyrite and tennantite has been studied by UV-visible spectroscopy at pH values of 4, 6, and 9. The concentration of diethyl dithiophosphate in the solution has been monitored as a function of time and pH for both minerals. It was found that the adsorption tendency of diethyl dithiophosphate on both minerals decreased with the increasing pH treatments. This is due to the existence of metal hydroxide species onto the mineral surface in more alkaline condition inhibiting the adsorption of diethyl dithiophosphate species. In comparison to that of chalcopyrite, tennantite possessed slightly higher adsorption of diethyl dithiophosphate in acid condition, while vice versa correlation observed at other pH treatments at where the coverage of metal hydroxide species obtained higher than that of chalcopyrite showing that the rate oxidation of tennantite is higher. An adsorption mechanism has been proposed and tested against the experimental kinetic data. Both the kinetic data and flotation studies are consistent with the proposed mechanism.

Original languageEnglish
Pages (from-to)695-702
Number of pages8
JournalJournal of Mining Science
Volume47
Issue number5
DOIs
Publication statusPublished - Sep 1 2011

Fingerprint

tennantite
chalcopyrite
adsorption
Adsorption
Minerals
kinetics
Kinetics
hydroxide
mineral
metal
Flotation
Metals
spectroscopy
Spectroscopy
oxidation
Oxidation
Acids
acid

All Science Journal Classification (ASJC) codes

  • Geotechnical Engineering and Engineering Geology
  • Geology

Cite this

Study of diethyl dithiophosphate adsorption on chalcopyrite and tennantite at varied phs. / Petrus, H. T.B.M.; Hirajima, Tsuyoshi; Sasaki, Keiko; Okamotob, H.

In: Journal of Mining Science, Vol. 47, No. 5, 01.09.2011, p. 695-702.

Research output: Contribution to journalArticle

Petrus, H. T.B.M. ; Hirajima, Tsuyoshi ; Sasaki, Keiko ; Okamotob, H. / Study of diethyl dithiophosphate adsorption on chalcopyrite and tennantite at varied phs. In: Journal of Mining Science. 2011 ; Vol. 47, No. 5. pp. 695-702.
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