Der Pharma Chemica
Journal for Medicinal Chemistry, Pharmaceutical Chemistry, Pharmaceutical Sciences and Computational Chemistry

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Factors influencing the removal of fluoride from aqueous solution by Pithacelobium dulce Carbon

Author(s): K. A. Emmanuel, A. Veerabhadrarao, T. V. Nagalakshmi, M. Gurupratap Reddy, P. P. Diwakar and Ch. Sureshbabu

The aim of this research work is to develop a new method for the removal of fluoride, from aqueous solutions by using indigenously prepared low cost activated carbon like Pithacelobiumdulce carbon (PLDC). The effects various factors like pH, dose of the adsorbent, adsorbate concentration and contact time have been investigated using a batch adsorption technique. The amount of fluoride removal increased with decrease in the initial concentration of fluoride and also increased with increase in contact time, amount of adsorbent used and the initial pH of the solution. Adsorption data were modeled using the Freundlich and Langmuir adsorption isotherms and followed first order kinetic equation –dF/dt= Kr (F). The experimental results produced a straight line fit with a relatively good correlation coefficient (R 2 ) indicating the acceptability of the model for the studied indigenously prepared activated carbon fluoride system. The kinetics of adsorption was found to be first order with regards to intra-particle diffusion rate.


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