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Modified Mangosteen shell carbon in the removal of Pb (II) and Hg (II) from aqueous solution-Isotherm and Kinetic studies

Paper Topic: 
Water and Wastewater Treatment
 
Volume: 
 
 

Pages :
112 - 118

Corresponing Author: 
D.Anitha
 
Authors: 
Anitha D. Ramadevi A.
Paper ID: 
gnest_03188
Paper Status: 
Published
Date Paper Accepted: 
19-12-2020
Paper online: 
15/01/2021
Visual abstract: 
Abstract: 

An adsorbent was prepared from Mangosteen shell using sulphuric acid and sodium bicarbonate as modifiers. Bicarbonate treated mangosteen shell (BTMC) was characterized using FT- IR, SEM, EDAX and XRD data. The Freundlich adsorption isotherm model gives a good fit. The maximum adsorption capacities of BTMC were found to be 58.48 mg g-1 and 49.75 mg g-1 for Pb (II) and. Hg (II). Adsorption of Pb (II) and Hg (II) followed pseudo-second-order kinetics. The adsorption mechanism was explained using the Weber and Morris's intra-particular diffusion process. Batch mode studies with synthetic wastewater suggest that BTMC can be efficiently used in wastewater treatment.

Keywords: 
Adsorption; Langmuir; Temkin; wastewater.