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Surface characteristics of shales and implication on metal sorption

DSpace at IIT Bombay

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Title Surface characteristics of shales and implication on metal sorption
 
Creator PAIKARAY, S
BANERJEE, S
MUKHERJI, S
 
Subject zero charge
cadmium
carbon
soils
complexation
sorbent
removal
point
point of zero charge
heavy metals
geosorbents
surface functional groups
vindhyan
 
Description 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.
 
Publisher SPRINGER HEIDELBERG
 
Date 2011-08-30T05:30:20Z
2011-12-26T12:58:47Z
2011-12-27T05:49:19Z
2011-08-30T05:30:20Z
2011-12-26T12:58:47Z
2011-12-27T05:49:19Z
2008
 
Type Article
 
Identifier ENVIRONMENTAL CHEMISTRY LETTERS, 6(2), 91-94
1610-3653
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
 
Language en