TY - JOUR ID - 106436 TI - Synthesis of Piperdinomethylcalix[4]arene Attached Silica Resin for the Removal of Metal Ions from Water: Equilibrium, Thermodynamic and Kinetic Modelling Studies JO - Advanced Journal of Chemistry, Section A JA - AJCA LA - en SN - 2645-7768 AU - Junejo, Ranjhan AU - Memon, Shahabuddin AU - Durmaz, Fatih AU - Ahmed, Ayaz Ali AU - Memon, Fakhar Nisa AU - Jalbani, Nida Shams AU - Memon, Safia Sanam AU - Bhatti, Asif Ali AD - National Center of Excellence in Analytical Chemistry, University of Sindh, Jamshoro-76080, Pakistan AD - Department of Chemistry, Selcuk University, Konya 42075, Turkey AD - Department of Chemistry, University of Karachi, Karachi-75270, Pakistan AD - Department of Chemistry, Government College University Hyderabad, Hyderabad 71000, Pakistan Y1 - 2020 PY - 2020 VL - 3 IS - Special Issue SP - 680 EP - 691 KW - Batch Adsorption KW - Toxic metal ions KW - Calix[4]arene KW - Online adsorption DO - 10.22034/ajca.2020.106436 N2 - 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. UR - http://www.ajchem-a.com/article_106436.html L1 - http://www.ajchem-a.com/article_106436_5d74485e9cadd2761b4657575e6c4667.pdf ER -