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  3. Volume 14, Number 4, 2020
  4. Adsorption of Heavy Metal on Active Carbon Derived from Coconut Leaves Agro-Waste

Adsorption of Heavy Metal on Active Carbon Derived from Coconut Leaves Agro-Waste

JCCT.
2020;
Volume 14, Number 4
: pp. 553 - 562
https://doi.org/10.23939/chcht14.04.553
Authors:
  1. Abhijit Jadhav
  2. Govindaraj Mohanraj
  3. Suseeladevi Mayadevi
  4. Ashok Gokarn
1
Department of Chemical Engineering, Birla Institute of Technology
2
Department of Chemical Engineering, Birla Institute of Technology
3
National Chemical Laboratory
4
National Chemical Laboratory

In this paper activated carbon is prepared from coconut leaves by chemical activation during slow pyrolysis at 673 K in an inert atmosphere. Activated carbon is prepared in the stiochiometric ratio of 1:1 (CL1), 2:1 (CL2) and 3:1 (CL3). Optimized 3:1 ratio is preferable for further study. BET surface area of CL3 activated carbon was found 1060.57 m2/g. It is greater than those of CL1 and CL2. The batch sorption study experiments were conducted with respect to solute concentration of 2.5–122.8 mg/l and solution temperature of 313–343 K. The Langmuir, Freundlich and Temkin isotherm studies were conducted. The experimental data fitted very well for the pseudo-first order and pseudo-second-order. The results have established good potentiality for the CL3 activated carbon to be used as a sorbent for the removal of lead from wastewater.

Pb(II)
coconut leaves
pseudo-first order
second-order
Langmuir isotherm
Freundlich isotherm
Temkin isotherm
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