Synthesis of a New Granulated Polyampholyte and its Sorption Properties

• Main Authors: Bekchanov Davron, Mukhamediev Mukhtar, Kutlimuratov Nurbek, Xushvaqtov Suyun, Juraev Murod
• Format: Article
• Language: English
• Published: Universitas Indonesia 2020-10-01
• Series: International Journal of Technology
• Subjects: metals; modification; polyampholyte; sorption
• Online Access: https://ijtech.eng.ui.ac.id/article/view/4024

In this paper, characteristics of the interaction of an anion-exchange resin PPE-1 formed using phosphonic acid and granular polyvinyl chloride were investigated. In addition, a reaction order of 1.43 and an activation energy of 47.8 kJ/mol for phosphorylation were determined. The as-obtained polyampholyte was characterized by scanning electron microscopy (SEM), energy-dispersive X-ray (EDX) analysis, and Fourier transform infrared (FTIR) spectroscopy. Optimum conditions for obtaining a new polyampholyte that selectively adsorbs non-ferrous metal ions on the basis of granulated polyvinyl chloride were determined.  Sorption isotherms for non-ferrous metal ions were constructed, which were reasonably explained by Langmuir isotherms. Various thermodynamic parameters, such as isobaric-isothermal potential (?G), enthalpy (?H), and entropy (?S), were calculated to understand the nature of sorption. The examined polyampholyte selectively absorbed copper(II) ions.