@article { author = {Junejo, Ranjhan and Memon, Shahabuddin and Durmaz, Fatih and Ahmed, Ayaz Ali and Memon, Fakhar Nisa and Jalbani, Nida Shams and Memon, Safia Sanam and Bhatti, Asif Ali}, title = {Synthesis of Piperdinomethylcalix[4]arene Attached Silica Resin for the Removal of Metal Ions from Water: Equilibrium, Thermodynamic and Kinetic Modelling Studies}, journal = {Advanced Journal of Chemistry, Section A}, volume = {3}, number = {Special Issue}, pages = {680-691}, year = {2020}, publisher = {Sami Publishing Company}, issn = {2645-7768}, eissn = {2645-5676}, doi = {10.22034/ajca.2020.106436}, abstract = {Toxic metal pollution is one of the most persistent environmental problems globally. This study deals with the synthesis of the p -piperdinomethyl calix[4]arene attached silica (PAS) resin and to investigate their metal ions removal efficiency from water. In batch adsorption experiment PAS resin shows good adsorption efficacy for the Cu2+ and Pb2+ metal ions. To examine the adsorption mechanism and validate the experimental adsorption data the isotherm models were applied and adsorption of the Cu2+ and Pb2+ metal ions follow Freundlich isotherm model very well with good correlation coefficient. However, the adsorption energy calculated from the D-R isotherm was at the range of 9-14 KJ/mole which describes the ion exchange nature of resin. Furthermore, breakthrough capacity of column was calculated from online adsorption as 0.027 and 0.041 mmol/g-1 for Cu2+ and Pb2+, respectively. Furthermore, thermodynamics and kinetic study revealed that, the adsorption process spontaneity and endothermic that follows the pseudo 2nd order kinetic equation with good regression coefficient.}, keywords = {Batch Adsorption,Toxic metal ions,Calix[4]arene,Online adsorption}, url = {http://www.ajchem-a.com/article_106436.html}, eprint = {http://www.ajchem-a.com/article_106436_5d74485e9cadd2761b4657575e6c4667.pdf} }