Paper Type |
Contributed Paper |
Title |
Modified Mangosteen Shell in the Removal of Hg (II) from Aqueous Solution-Isotherm and Kinetic Studies |
Author |
Anitha Devasahayam, Ramadevi Abbai Ramanujam and Seetharaman Ramasamy |
Email |
rseetharamanece@annauniv.edu, rseetharamanece@gmail.com |
Abstract: An activated carbon was prepared from an agricultural waste mangosteen shell by chemical
modification (BTMC) and removal efficiency was tested using aqueous solution of Hg (II). The
functional groups and surface morphology of BTMC were analyzed using FT-IR and SEM studies.
Commercial activated carbon (CAC) was used to compare the efficiency of BTMC in Hg (II) removal.
Batch mode studies were conducted to evaluate the parameters like contact time, pH, carbon dose
on the removal efficiency of Hg (II) from aqueous solution. Removal of mercury occurs at optimal
contact time of 120 min at pH 5 and carbon dosage of 120 mg for BTMC. Adsorption isotherm
was studied using Freundlich, Langmuir, and Temkin isotherm models. Equilibrium data fitted well
with Langmuir isotherm. The maximum adsorption capacity of Hg (II) was found to be 49.75 mg g-1
for BTMC. The pseudo second-order kinetic model fits well with the experimental data. Wastewater
analysis was also performed to evaluate the practical applicability of the carbon. |
|
Start & End Page |
127 - 136 |
Received Date |
2019-07-15 |
Revised Date |
|
Accepted Date |
2019-09-08 |
Full Text |
Download |
Keyword |
adsorption, mangosteen shell, mercury, kinetics, isotherm |
Volume |
Vol.47 No.1 (January 2020) |
DOI |
|
Citation |
Devasahayam A., Ramanujam R.A. and Ramasamy S., Modified Mangosteen Shell in the Removal of Hg (II) from Aqueous Solution-Isotherm and Kinetic Studies, Chiang Mai J. Sci., 2020; 47(1): 127-136. |
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