Design and Optimization of Cu(II) Adsorption Conditions from Aqueous Solutions by Low-Cost Adsorbent Pumice with Response Surface Methodology


Öztürk D. , Şahan T.

POLISH JOURNAL OF ENVIRONMENTAL STUDIES, vol.24, no.4, pp.1749-1756, 2015 (Journal Indexed in SCI) identifier

  • Publication Type: Article / Article
  • Volume: 24 Issue: 4
  • Publication Date: 2015
  • Title of Journal : POLISH JOURNAL OF ENVIRONMENTAL STUDIES
  • Page Numbers: pp.1749-1756
  • Keywords: adsorption, central composite design, pumice, response surface methodology, WASTE-WATER, MODIFIED DIATOMITE, KAOLINITE CLAY, EQUILIBRIUM, REMOVAL, IONS, PB(II), BENTONITE, KINETICS, SORPTION

Abstract

The adsorption of Cu(II) by pumice was investigated in a batch system. Optimization of medium conditions was studied through experimental design. Response surface methodology including central composite design was successfully applied to develop a response surface to optimize medium conditions. The most influential medium parameters were determined as initial Cu(11) concentration, pH, temperature, and adsorbent dosage. The optimum conditions were evaluated to be 47.14 mg/L, 5.31, 38.30 degrees C, and 3.14 g for initial Cu(II) concentration, pH, temperature and adsorbent dosage, respectively. At these optimum points, the adsorption yield and adsorption capacity were calculated as 95.10% and 1.43 mg/g, respectively.