Some studies on the adsorption behaviour of an oxidised starch onto haematite

Subramanian, S. ; Natarajan, K. A. (1988) Some studies on the adsorption behaviour of an oxidised starch onto haematite Minerals Engineering, 1 (3). pp. 241-254. ISSN 0892-6875

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The interaction of an oxidised starch with natural haematite has been investigated through adsorption studies, X-ray photoelectron and FTIR spectroscopic techniques. The adsorption density is found to vary with pH, with the maximum adsorption taking place in the pH range 4 to 10. Adsorption isotherms at 30 and 50°C show that the adsorption density varies also with temperature. The infrared and X-ray photoelectron spectra of adsorbed starch on haematite indicate evidence of chemical interaction and hydrogen bonding. Further, the direct interaction of ferric ion with starch has been studied through binding in solution, SEM-EDAX analysis, viscosity and conductivity measurements, and these results suggest chemical interaction between iron and starch. Based on the above findings, probable adsorption mechanisms in this system have been postulated.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
Keywords:Adsorption Studies; Oxidised Starch; Haematite; X-ray Photoelectron Spectra; FTIR Spectra; Viscosity; Conductivity; Chemical Interaction; Hydrogen Bonding
ID Code:24461
Deposited On:29 Nov 2010 08:52
Last Modified:08 Jun 2011 08:52

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