MATEC Web of Conferences (Jan 2018)

Adsorption of Nickel and Chromium Ions by Amine-Functionalized Silica Aerogel

  • Sertsing Sudarat,
  • Chukeaw Thanaphat,
  • Pengpanich Sitthiphong,
  • Pornchuti Bawornpong

DOI
https://doi.org/10.1051/matecconf/201815603014
Journal volume & issue
Vol. 156
p. 03014

Abstract

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In this study, silica aerogel was synthesized by drying at atmospheric pressure and modified further with aminopropyl triethoxysilane (APTES). The amine-functionalized silica aerogel was investigated as an adsorbent for removal of nickel and chromium ions. The effect of contact time, solution pH, and initial solution concentration were studied. The equilibrium was achieved within 60 min. The optimum pH was found to be 4. Adsorption equilibrium data were agreed fairly well with Langmuir isotherm model. Adsorption capacities for nickel and chromium ions were found to be 40.32 mg/g and 46.08 mg/g, respectively.