Title: FACTORIAL EXPERIMENTAL DESIGN FOR ADSORPTION SILVER IONS FROM WATER ONTO MONTMORILLONITE |
Authors: Geyikci Feza and Büyükgüngör Hanife |
DOI: 10.13168/AGG.2013.0035 |
Journal: Acta Geodynamica et Geomaterialia, Vol. 10, No. 3 (171), Prague 2013 |
Full Text: PDF file (0.4 MB) |
Keywords: montmorillonite, factorial design analysis, silver ions adsorption |
Abstract: This research work involved the use of factorial design technique to investigate the adsorption of silver ions from water onto
montmorillonite. There is a growing interest in using low-cost and commercially available materials for the adsorption of
heavy metals. Clay particles are strongly anisotropic and exhibit faces and edges, which are very different in surface area and
in chemical behavior. It has been reported that the abundance of clay minerals and their low cost has posed them a strong
candidate as adsorbent for removal of heavy metal from wastewater. In this study, a factorial experimental design technique
was used to investigate the adsorption of silver ions from water onto montmorillonite. The experimental factors and their
respective levels that were selected include a pH of 3 – 8, an adsorbent dosage of 0.5–2.0 g/L and an initial silver ions
concentration of 20–200 mg/L. The results were analyzed statistically using the Student’s t-test, analysis of variance, F-test
and lack of fit to define most important process variables affecting the percentage silver ions adsorption. |