Preparation and testing of a tetra-amine copper(II) chitosan bead system for enhanced phosphate remediation

Add time:08/15/2019    Source:sciencedirect.com

A tetra-amine copper(II) chitosan bead system ([email protected] composite beads) was developed by grafting tetra-amine copper(II) (TAC) with chitosan (CS) and utilized for phosphate removal. The prepared [email protected] composite beads possess enhanced phosphate sorption capacity (SC) of 41.42 ± 0.071 mg/g than copper grafted chitosan ([email protected]) composite, TAC and chitosan which were found to be 37.01 ± 0.803, 33.20 ± 0.650 and 7.24 ± 0.059 mg/g respectively. In batch mode, various adsorption influencing parameters like contact time, initial phosphate concentration, solution pH, co-anions and temperature were optimized for maximum phosphate sorption. The prepared adsorbents were characterized by FTIR, XRD, UV–Visible, SEM and EDAX analysis. The adsorption isotherms and thermodynamic parameters of the adsorbent were studied. The feasible phosphate uptake mechanism of [email protected] biocomposite beads was reported. The reusability studies of [email protected] composite beads were carried out using NaOH as elutant. The suitability of [email protected] composite beads at field conditions was tested with phosphate contaminated field water samples collected from nearby areas of Dindigul district.

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