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Biosorption mechanism of nine different heavy metals onto biomatrix from rice husk.

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Title Biosorption mechanism of nine different heavy metals onto biomatrix from rice husk.
Not Available
 
Creator K.K.Krishnani
X.Meng
C.Christodoulatos
Veera M..Boddu
 
Subject Biomatrix
Heavy metals
Removal mechanism
 
Description Not Available
A biomatrix was prepared from rice husk, a lignocellulosic waste from agro-industry, for the removal of several heavy metals as a function of pH
and metal concentrations in single and mixed solutions. The biomatrix was characterized using scanning electron microscope and Fourier transform
infrared spectroscopy, which indicated the presence of several functional groups for binding metal ions. Different experimental approaches were
applied to show mechanistic aspects, especially the role of calcium and magnesium present in the biomatrix in ion exchange mechanism. The
ultimate maximum adsorption capacity obtained from the Langmuir isotherm increases in the order (mmol/g): Ni (0.094), Zn (0.124), Cd (0.149),
Mn (0.151), Co (0.162), Cu (0.172), Hg (0.18) and Pb (0.28). The sorption of Cr(III) onto biomatrix at pH 2 was 1.0 mmol/g. Speciation of
chromium, cadmium and mercury loaded on the biomatrix was determined by X-ray photoelectron spectroscopy. The biomatrix has adsorption
capacity comparable or greater to other reported sorbents.
Not Available
 
Date 2023-08-02T06:31:46Z
2023-08-02T06:31:46Z
2009-01-01
 
Type Journal
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/80385
 
Language English
 
Relation Not Available;
 
Publisher Not Available