Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Kinetics of collector adsorption on mineral surfaces
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Sustainable Process Engineering.ORCID iD: 0000-0001-9794-8305
2006 (English)In: Minerals Engineering, ISSN 0892-6875, E-ISSN 1872-9444, Vol. 19, no 6-8, p. 784-789Article in journal (Refereed) Published
Abstract [en]

In the present study infrared attenuated total reflection (IR-ATR) was used to monitor the rate of in situ adsorption of heptyl xanthate on a layer of zinc sulphide synthesized on a germanium ATR crystal. The zinc sulphide surface was characterized using X-ray photoelectron spectroscopy (XPS). The absorbance of heptyl xanthate measured increased with increasing bulk concentration of the adsorbate up to an equilibrium plateau value corresponding to a fractional coverage of the surface sites of the substrate. For the adsorption from solutions of concentrations between 10−3 and 10−5 M, the rate of adsorption increased with increasing bulk concentration. At higher concentrations the measured absorbance should be corrected for the absorbance due to the concentration of xanthate in bulk solution. The present work provides a discussion of this correction. Assuming the adsorption stage to be rate-controlling and proportional both to the concentration of the adsorbing species in solution and unreacted surface area, a rate law governing this type of transient adsorption kinetics was derived. By means of absorbance data for the concentrations 0.1 and 0.01 mM, the rate constant of adsorption was calculated. From the initial part of a Langmuir adsorption isotherm, the absorbance at monolayer coverage and the equilibrium constant of adsorption could be estimated.

Place, publisher, year, edition, pages
2006. Vol. 19, no 6-8, p. 784-789
National Category
Physical Chemistry Physical Chemistry
Research subject
Chemistry of Interfaces; Physical Chemistry
Identifiers
URN: urn:nbn:se:ltu:diva-6348DOI: 10.1016/j.mineng.2005.09.037ISI: 000237915000030Scopus ID: 2-s2.0-33644950445Local ID: 495139a0-dde9-11db-9cae-000ea68e967bOAI: oai:DiVA.org:ltu-6348DiVA, id: diva2:979225
Note
Validerad; 2006; Bibliografisk uppgift: Selected papers from the Centenary of Flotation Symposium, 5–9 June 2005, Brisbane, Australia; 20070329 (pafi)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

Open Access in DiVA

No full text in DiVA

Other links

Publisher's full textScopus

Authority records BETA

Fredriksson, AndreasHolmgren, AllanForsling, Willis

Search in DiVA

By author/editor
Fredriksson, AndreasHolmgren, AllanForsling, Willis
By organisation
Sustainable Process Engineering
In the same journal
Minerals Engineering
Physical ChemistryPhysical Chemistry

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 43 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf