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Efficient organic-MgO matrix as adsorbent for heavy metal uptake: Spectroscopic, adsorption isotherms, kinetic and thermodynamic analysis

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Title Efficient organic-MgO matrix as adsorbent for heavy metal uptake: Spectroscopic, adsorption isotherms, kinetic and thermodynamic analysis
 
Creator Sharma, Naresh Kumar
Ratan, Jyotsna
Gandhi, Namita
Ali, Sajid
Srivastava, Atul Kumar
 
Subject Agricultural waste
Citrus aurantium Linn
Heavy metals
Low-cost adsorbents
Organic-metal matrix
 
Description 622-630
orange (Citrus aurantium Linn) peel (CiR). The removal of heavy metals pollutants by binding of magnesium oxides (MgO)
on the peel represents a simple, economical, and faster method. Various analysis, including X-ray diffraction, Fourier
transforms infrared spectroscopy and application of mathematical models, have been performed on the modified adsorbent
(dried Citrus reticulata peel + MgO; CiR-MgO matrix). The abundant free functional groups present in the biomass and
metal oxides collectively exert interactive forces leading to the sorption of Zn2+ heavy metals. The Langmuir isotherm and
pseudo-first order kinetic models are confirmed as the best fitted model of the adsorption process through chi-analysis. The
rate-limiting step of intra-particle diffusion governs the adsorption process. This method is best suited for fixed-bed column
application due to its fast kinetics, hydrophilic nature, and regeneration process with 0.005 M HCl.
 
Date 2024-07-03T07:01:41Z
2024-07-03T07:01:41Z
2024-07
 
Type Article
 
Identifier 0975-0991 (Online); 0971-457X (Print)
http://nopr.niscpr.res.in/handle/123456789/64155
https://doi.org/10.56042/ijct.v31i4. 8734
 
Language en
 
Publisher NIScPR-CSIR,India
 
Source IJCT Vol.31(4) [July 2024]