A fully bio-sourced adsorbent of heavy metals in water fabricated by immobilization of quinine on cellulose paper

J Environ Sci (China). 2019 Oct:84:174-183. doi: 10.1016/j.jes.2019.05.006. Epub 2019 May 17.

Abstract

The fabrication of a fully bio-sourced adsorbent of Cd(II) by covalent immobilization of quinine on cellulose paper is described. The double bond of commercially available quinine was converted to a terminal alkyne function which was reacted with cellulose paper, chemically modified with azide functions, through a 1,3-dipolar cycloaddition, leading to Cell-Quin. The adsorption efficiency of Cell-Quin was investigated to determine the optimal pH, contact time and dose of adsorbent, ultimately leading to high levels of removal. The mechanism of adsorption of Cell-Quin was deeply rationalized through kinetic experiments and isotherm modeling. We also showed that Cell-Quin could adsorb other heavy metals such as Cu(II), Pb(II), Ni(II) and Zn (II).

Keywords: Adsorbent; Cellulose paper; Heavy metal removal; Quinine.

Publication types

  • Evaluation Study

MeSH terms

  • Adsorption
  • Cadmium / isolation & purification*
  • Cellulose
  • Hydrogen-Ion Concentration
  • Kinetics
  • Paper
  • Quinine / chemistry*
  • Thermodynamics
  • Water Pollutants, Chemical / isolation & purification*

Substances

  • Water Pollutants, Chemical
  • Cadmium
  • Cellulose
  • Quinine