An evaluation of two techniques for the removal of ultraviolet-absorbing contaminants from clays

Simpson G.H. and Hughes J.D. (1974) An evaluation of two techniques for the removal of ultraviolet-absorbing contaminants from clays. Australian Journal of Soil Research, 12 2: 159-164. doi:10.1071/SR9740159


Author Simpson G.H.
Hughes J.D.
Title An evaluation of two techniques for the removal of ultraviolet-absorbing contaminants from clays
Journal name Australian Journal of Soil Research   Check publisher's open access policy
ISSN 0004-9573
Publication date 1974-01-01
Sub-type Article (original research)
DOI 10.1071/SR9740159
Open Access Status
Volume 12
Issue 2
Start page 159
End page 164
Total pages 6
Subject 1111 Nutrition and Dietetics
2304 Environmental Chemistry
Abstract Elution of clays with buffer solutions was compared with the more destructive technique of peroxide oxidation to remove ultraviolet-absorbing contaminants from kaolinite and montmorillonite. Repetitive elution of kaolinite at pH 7-0 and of montmorillonite at pH 8-4 removed significant amounts, but the level of contamination after this treatment was still unacceptably high. Oxidation with hydrogen peroxide was considerably more effective, but X-ray diffraction data on the oxidized clays provided evidence of the breakdown of aggregates in the 2-5 μm size range. It was concluded that the contaminants were organic and that oxidation removed bonding groups from clay domains.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: Scopus Import - Archived
 
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Created: Tue, 28 Jun 2016, 17:50:35 EST by System User