The Preparation of TCAS-Loaded Resin and its Adsorption Property to Pb²⁺ Ion

Abstract:

A adsorbent for cadmium has been prepared by loading an anion-exchange resin with a novel supramolecular compound named thiacalix[4]arenetetrasulfonate (TCAS). The adsorption properties of Pb²⁺ on TCAS-loaded resin had been studied and the effects of varying temperature, pH value, adsorption time and initial concentration. Batch extraction studies had revealed a high adsorption ability of the TCAS-loaded resin toward this heavy metal ion with high selectivity. The maximum adsorption capacity of the TCAS-loaded resin toward Pb2+ was 26.32 mg•g^-1. The removal rate of Pb²⁺ in water was up to 99% after 40min at 20°C when a 50mL aqueous solution of Pb²⁺ (10 mg•L^-1) was adsorbed by 0.5g TCAS-loaded resin. The removal percentage steadily retained above 99% when the pH values were in the range of 4 to 7. The adsorption isotherm of the TCAS-loaded resin to Pb²⁺ ions fits well to linear form of Langmuir sorption equation.

• Periodical: Advanced Materials Research (Volumes 396-398)
• Pages: 421-424
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.396-398.421
• Online since: November 2011
• Authors: Xiao Jun Hu, Pin Zhang, Yu Shuang Li
• Keywords: Adsorption, Adsorption Isotherm, Pb²⁺ Ion, TCAS-Loaded Resin

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