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Tannin adsorption characteristics of bed sediments of Edava-Nadayara and Paravur backwater systems, southwest coast of India

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Title Tannin adsorption characteristics of bed sediments of Edava-Nadayara and Paravur backwater systems, southwest coast of India
 
Creator Madhukumar, A
Anirudhan, T S
 
Description 37-42
The adsorption
behaviour of tannin was investigated under varying factors like, time of contact,
pH, salinity and the presence of anions such as chloride, chlorate, nitrate,
acetate, sulphate and phosphate. The removal of tannin by sediments was found
to be pH and salinity dependent. Adsorption of tannin by sediments increases
with clay content associated with the samples. Maximum adsorption of tannin was
observed at pH 5.0. The percentage removal of tannin increases with increase
in salinity. The data indicated that the presence of phosphate ions play an
important role in retarding the adsorption of tannin by sediments and phosphate
effectively competes with tannin for adsorption sites on sediments. The applicability
of Langmuir and Freundlich isotherm models has been tested. Sediments from
non-retting zone possessed higher adsorption capacity based on the Langmuir
maxima.
 
Date 2014-01-06T18:40:15Z
2014-01-06T18:40:15Z
2000-03
 
Type Article
 
Identifier 0975-1033 (Online); 0379-5136 (Print)
http://hdl.handle.net/123456789/25268
 
Language en_US
 
Rights CC Attribution-Noncommercial-No Derivative Works 2.5 India
 
Publisher NISCAIR-CSIR, India
 
Source IJMS Vol.29(1) [March 2000]