Universiti Teknologi Malaysia Institutional Repository

Simultaneous adsorption of a mixture of paraquat and dye by NaY zeolite covered with alkylsilane

Nur, Hadi and Manan, Amir Faizal Naidu Abdul and Wei, Lim Kheng and Muhid, Mohd Nazlan Mohd and Hamdan, Halimaton (2005) Simultaneous adsorption of a mixture of paraquat and dye by NaY zeolite covered with alkylsilane. Journal of Hazardous Materials, 117 (1). pp. 35-40. ISSN 0304-3894

Full text not available from this repository.

Official URL: http://dx.doi.org/10.1016/j.jhazmat.2004.07.015

Abstract

The surfaces of NaY zeolite particles were modified by the alkylsilylation of n-octadecyltrichlorosilane (OTS). Two kinds of modified NaY zeolites were prepared; one with its external surface partially and the other fully covered with alkylsilyl groups. Since the size of OTS is bigger than the pore diameter of NaY, it is attached on the external surface, leaving the internal pore accessible to adsorbate molecules. As a result of alkylsilylation, the adsorption properties of these sorbents were improved. The adsorption properties of these materials were tested by their reaction in a mixture of paraquat and blue dye. The results demonstrate that the alkysilylated NaY materials are capable of simultaneous adsorption of paraquat and blue dye. Paraquat was selectively adsorbed into the internal pore of the zeolite whereas the dye on the externally attached alkylsilyl groups of the sorbent; displaying the unique bimodal amphiphilic character of the alkylsilylated NaY zeolites.

Item Type:Article
Uncontrolled Keywords:Paraquat, blue dye, alkylsilylation, NaY zeolite
Subjects:T Technology > TP Chemical technology
Divisions:Chemical and Natural Resources Engineering (Formerly known)
ID Code:7300
Deposited By: Maznira Sylvia Azra Mansor
Deposited On:02 Jan 2009 03:38
Last Modified:02 Jan 2009 03:38

Repository Staff Only: item control page