| Issue |
E3S Web Conf.
Volume 309, 2021
3rd International Conference on Design and Manufacturing Aspects for Sustainable Energy (ICMED-ICMPC 2021)
|
|
|---|---|---|
| Article Number | 01077 | |
| Number of page(s) | 7 | |
| DOI | https://doi.org/10.1051/e3sconf/202130901077 | |
| Published online | 07 October 2021 | |
Lead removal using Fallen Coffee Plant Leaves (FCPL) powder: Characterization, Equilibrium, Kinetics and Thermodynamic studies
1 Assistant Professor, Department of Chemical Engineering, AUCE (A), Andhra University, Visakhapatnam, India
2 Assistant Professor, Department of Chemical Engineering, AUCE (A), Andhra University, Visakhapatnam, India
3 Professor, Department of Chemical Engineering, AUCE (A), Andhra University, Visakhapatnam, India
4 Professor, Department of Chemical Engineering, AUCE (A), Andhra University, Visakhapatnam, India
5 Professor (Retired), Department of Chemical Engineering, AUCE (A), Andhra University, Visakhapatnam, India
* Corresponding author: drmtukarambai@gmail.com
Biosorption of lead onto Fallen Coffee Plant leaves (FCPL) powder from an aqueous solution was studied in the present study. The characterization of FCPL powder was done by FTIR, XRD, SEM and BET. The equilibrium agitation time for lead biosorption is 60 min. The optimum pH and dosage values are 5.2 and 20 g/L respectively. In the range of variables studied, percentage biosorption is increased from 75.1 to 95.5 %. The maximum uptake capacity of 3.664 mg/g is obtained at 303 K. In the present investigation the equilibrium data was well explained by Langmuir, Redlich-Peterson with a correlation coefficient of 0.99, and followed by Temkin and Freundlich isotherms. The kinetic studies reveal that the biosorption system obeyed the pseudo second order kinetic model by considering the correlation coefficient value as 0.99. From the values of ∆S, ∆H and ∆G it is observed that the biosorption of lead onto Fallen coffee plant leaves(FCPL) powder was irreversible, endothermic and spontaneous.
© The Authors, published by EDP Sciences, 2021
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