Next Article in Journal
Hardness and Elastic Modulus on Six-Fold Symmetry Gold Nanoparticles
Previous Article in Journal
Recent Progress in Advanced Materials for Lithium Ion Batteries
Open AccessArticle

Nanocrystalline Akaganeite as Adsorbent for Surfactant Removal from Aqueous Solutions

Department of Petroleum and Natural Gas Technology, Technological Educational Institute of Kavala, Kavala 65404, Greece
Department of Chemistry, Aristotle University of Thessaloniki, Thessaloniki 54124, Greece
Author to whom correspondence should be addressed.
Materials 2013, 6(1), 184-197;
Received: 13 November 2012 / Revised: 6 January 2013 / Accepted: 8 January 2013 / Published: 10 January 2013
The present study presents the effective use of nanocrystalline akaganeite for the adsorption of an anionic (SDS), a cationic (CTAB), and a nonionic (tween80) surfactant from wastewater. Equilibrium experiments, as well as thermodynamic analysis, were performed. The maximum SDS adsorption occurs at the lowest pH value (5), the opposite is observed for CTAB (pH = 11), while for tween80, the change of pH value did not affect the adsorption. The equilibrium data could be described by Freundlich and Langmuir isotherms. The maximum adsorption capacity at 25 °C (pH = 8) was 823.96 mg/g for SDS, 1007.93 mg/g for CTAB, and 699.03 mg/g for tween80. The thermodynamic parameters revealed the exothermic and spontaneity nature of the process. Also, FTIR measurements established that surfactants are adsorbed on the surface of akaganeite, replacing adsorbed water. View Full-Text
Keywords: akaganeite; removal; adsorption; surfactant akaganeite; removal; adsorption; surfactant
Show Figures

Figure 1

MDPI and ACS Style

Kyzas, G.Z.; Peleka, E.N.; Deliyanni, E.A. Nanocrystalline Akaganeite as Adsorbent for Surfactant Removal from Aqueous Solutions. Materials 2013, 6, 184-197.

Show more citation formats Show less citations formats

Article Access Map by Country/Region

Only visits after 24 November 2015 are recorded.
Back to TopTop