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Adsorption of Pb(II) on modified groundnut shell (MGNS): Isotherm, kinetic, and thermodynamic study

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Title Adsorption of Pb(II) on modified groundnut shell (MGNS): Isotherm, kinetic, and thermodynamic study
 
Creator Ratan, Sheel
Srivastava, Abhishek
Gangwar, Chinky
Nayak, Rashmi
Pandey, Vartika
Naik, Radhey Mohan
 
Subject Equilibrium time
Kinetic modeling
Langmuir adsorption isotherm
Lead
Modified groundnut shell (MGNS)
pH
 
Description 425-433
The environmental impact of lead compounds is significant. Lead compounds are typically consumed through drinking
water and offer a substantial danger. Pb(II) and related compounds are hazardous and have been classified as probable
human carcinogens by distinct regulatory authorities. For a regulatory and health standpoint, Pb(II) ion removal from
wastewater and water is crucial. By sulfuric acid activation, groundnut shell (GNS) has been converted into low-cost
activated carbon and grafted with EDTA to make modified groundnut shell (MGNS) powder. An analysis has been
conducted on its capacity to adsorb Pb(II) ions from aquatic solutions. An MGNS sample has been examined using SEM,
BET, and FTIR techniques, revealing the presence of a porous framework with a surface area of 2143 m2/g. The absorption
system adhered to a pseudo-second-order kinetic model, with the equilibrium time being determined at 120 minutes. The
adsorption isotherms have been accurately simulated by the Langmuir model. A mechanism involving ion exchange has
been suggested by the substantial pH dependence of Pb(II) adsorption on MGNS. Studies on regeneration have shown that
MGNS can be reused repeatedly by desorbing them with HCl.
 
Date 2024-09-24T09:12:37Z
2024-09-24T09:12:37Z
2024-09
 
Type Article
 
Identifier 0975-1017 (Online); 0971-4588 (Print)
http://nopr.niscpr.res.in/handle/123456789/64576
https://doi.org/10.56042/ijems.v31i3.7847
 
Language en
 
Publisher NIScPR-CSIR,India
 
Source IJEMS Vol.31(3) June