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Modelling the removal of Lead from synthetic contaminated water by activated carbon from biomass of Diplocyclos Palmatus by RSM

Paper Topic: 
Multidisciplinary research in environmental science
 

Pages :
-

Corresponing Author: 
Venugopal
 
Authors: 
A.Sivaprakasam, T. Venugopal
Paper ID: 
gnest_02929
Paper Status: 
In press
Date Paper Accepted: 
10/12/2018
Paper online: 
7/1/2019
Abstract: 

Diplocyclos Palmatus biomass activated carbon (DPAC) was used in this work to remove lead (II) ion from the synthetic wastewater. The DPAC was characterized for structural, surface morphology by SEM, functional group was analyzed by FT-IR and XRD analysis. Removal of Pb2+ was studied by batch method and various experimental parameters namely effect of Pb2+ concentration, contact time, effect of temperature; pH and effect of matrix were also studied. Kinetic modelling studies showed that the adsorption of Pb2+ ion follows pseudo second order mechanism and Langmuir isotherm model was found to fit better for this study. Thermodynamic study shows a negative value for ΔG indicating the process is spontaneous. Box Behnken Design using response surface methodology as DOE was carried out in this work. RSM modelling was found to be successful in predicting the removal efficiency with R2 greater than 0.95.

Keywords: 
DPAC, Hazardous Pb2+, Adsorption isotherm, Kinetic models, Effect of matrix, Response Surface Methodology.