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Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/10054/12208

Title: Surface characteristics of shales and implication on metal sorption
Authors: PAIKARAY, S
BANERJEE, S
MUKHERJI, S
Keywords: zero charge
cadmium
carbon
soils
complexation
sorbent
removal
point
Issue Date: 2008
Publisher: SPRINGER HEIDELBERG
Citation: ENVIRONMENTAL CHEMISTRY LETTERS, 6(2), 91-94
Abstract: Differences in surface characteristics between alkaline and acidic shales are demonstrated in the present study. The alkaline shales are characterized by convex surface titration profiles, while the acidic shale exhibits a concave titration profile. Analysis of surface functional groups reveal that carboxylic acids predominate in alkaline shales and the acidic shale is characterized by C=S, C=N (pyridine derivative) and urea (C=O) functional groups, while it lacks -COOH group. The close proximity between pH and point of zero charge for the most acidic and alkaline shales indicate that surface complexation may not play a dominant role in sorption when the system pH is controlled by these sediments.
URI: http://dx.doi.org/10.1007/s10311-007-0113-2
http://dspace.library.iitb.ac.in/xmlui/handle/10054/12208
http://hdl.handle.net/10054/12208
ISSN: 1610-3653
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