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Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received November 18, 2002
Accepted May 13, 2003

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Utilization of Mesoporous Molecular Sieves Synthesized from Natural Source Rice Husk Silica to Chlorinated Volatile Organic Compounds (CVOCs) Adsorption

Nurak Grisdanurak^† Siriluk Chiarakorn¹ Jatuporn Wittayakun²

Catalytic and Material Research Laboratory, Department of Chemical Engineering, Khon Kaen University, Khon Kaen, 40002, Thailand ¹National Research Center for Environmental and Hazardous Waste Management, Chulalongkorn University, Bangkok, 10330, Thailand ²School of Chemistry, Suranaree University of Technology, Nakhon Ratchasima, 30000, Thailand

nurgri@mail.kku.ac.th

Korean Journal of Chemical Engineering, September 2003, 20(5), 950-955(6), 10.1007/BF02697304

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Abstract

The adsorption of trichloroethylene (TCE), tetrachloroethylene (PCE), and carbon tetrachloride was studied over our synthesized mesoporous material, MCM-41, from rice husk silica source, abbreviated as RH-MCM-41. More than 99% silica for RH-MCM-41 synthesis was extracted from rice husk under refluxing in HBr solution and then calcined at 873 K for 4 hours. RH-MCM-41 possessed surface area around 750-1,100 m₂/g with a uniform pore size with an average diameter of 2.95 nm, narrow range of pore distribution and somewhat hexagonal structure, similar to properties of parent MCM-41. The adsorption of CCl4 to RH-MCM-41 was stronger than that of TCE and PCE. The adsorption capacity of RH-MCM-41 for CVOCs (chlorinated volatile organic compounds) was higher than commercial mordenite and activated carbons.

Keywords

MCM-41 Chlorinated Volatile Organic Compounds (CVOCs) Adsorption Rice Husk Silica

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