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Metal ions binding onto lignocellulosic biosorbent.

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Title Metal ions binding onto lignocellulosic biosorbent.
Not Available
 
Creator K.K.Krishnani
X.Meng
L.Dupont
 
Subject Heavy metals
Biosorption
Cation-Exchange
Removal mechanism
 
Description Not Available
This paper describes the use of a lignocellulosic biosorbent for the adsorption and ion exchange of nine different heavy metals ions.
Batch isothermal equilibrium and continuous column adsorption experiments were carried out in an effort to evaluate the maximum
adsorption capacity, pH dependence and to study the mechanism of removal of metal ions onto the biosorbent. Bio-sorption data were
interpreted using Langmuir isotherm which reflect the influence of metal concentration on the uptake of the metal ion. Potentiometric
titrations were used to determine the contents of total functional groups. The biosorbent showed the strongest affinity for Pb2+, Hg2+
and Cu2+. The metal ions such as Cd2+, Cu2+, Ni2+, Co2+, and Mn2+ seemed to be exclusively involved in ion-exchange mechanism
with Ca2+ ions. The column adsorption experiment of multiple metals revealed the role of another cation in effective removal of
Pb2+, Hg2+ and Zn2+. The biosorbent has been found to be a good electron donor for the reduction of Cr(VI) in an acidic medium.
Not Available
 
Date 2023-08-02T06:26:31Z
2023-08-02T06:26:31Z
2009-01-01
 
Type Journal
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/80384
 
Language English
 
Relation Not Available;
 
Publisher Not Available