Abstract
The presence of toxic heavy metals in industrial wastewater is a serious pollution problem. The adsorption capacity of p-tert-butyl-calix[4]arene towards metal ions such as Pb2+and Cd2+ was studied. The adsorption capacity was investigated by batch experiments. The processing parameters such as contact time of Cu2+ and Pb2+ ions, temperature, pH and adsorbent dosage were also investigated. The maximum adsorption occurred at the pH value of 6. The optimum amount of calix[4]arene for adsorption of Cu2+ and Pb2+ ions retention was found 10mg/L. The adsorption capacity for lead and cadmium on the calix[4]arene increased with the increasing temperature. Equilibrium isotherms, kinetic data have been evaluated. Experimental equilibrium and kinetics data were described by Langmuir and Freundlich isotherms and pseudo first-order and pseudo second-order kinetics models, respectively. The results show that the equilibrium data follow Langmuir isotherm and the kinetic data follow pseudo second-order model. The obtained maximum adsorption capacity of Cd2+ and Pb2+ was 60.97 and 68.96mg/g at a pH 6, respectively.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
