Highly efficient removal of basic blue 41 with nanoporous silica

• Main Authors: Mansoureh Zarezadeh-Mehrizi, Alireza Badiei
• Format: Article
• Language: English
• Published: Elsevier 2014-03-01
• Series: Water Resources and Industry
• Subjects: Nanoporous silica; Waste water; Ethyl silicate; Cationic dye; Basic blue 41
• Online Access: http://www.sciencedirect.com/science/article/pii/S2212371714000067
• ISSN: 2212-3717

The adsorption characteristics of basic blue 41 from aqueous solution were investigated using nanoporous silica (NPS). NPS with an average pore diameter of 2.4 nm and a surface area of 1030 m2/g was synthesized by using nonyl phenol ethoxylated decylether (NP-10) as structure directing agent (SDA) and ethyl silicate 40% (ETS-40) under acidic condition. This adsorbent was analyzed by means of small-angle X-ray scattering, scanning electron microscopy, N2 adsorption–desorption isotherm and Fourier transforms infrared spectroscopy. The kinetic data reveals that the adsorption process follows the linear form of the pseudo-second-order model. The adsorption isotherm was fitted well to the Langmuir data. The monolayer adsorption capacity of adsorbent was found to be 345 mg/g.