| Affiliation: | (1) Catalytic and Material Research Laboratory, Department of Chemical Engineering, Khon Kaen University, 40002 Khon Kaen, Thailand;(2) National Research Center for Environmental and Hazardous Waste Management, Chulalongkorn University, 10330 Bangkok, Thailand;(3) School of Chemistry, Suranaree University of Technology, 30000 Nakhon Ratchasima, Thailand |
| 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 CC14 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. |
