The saccharification yield ranged from 80 to 90 for

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Unformatted text preview: S IN WATER Z. P. Nhlabatsi, R. W. Krause and L. M. Cele University of Johannesburg, Faculty of Science, Department of Chemical Technology, P.O.Bo x 17011, Doornfontein 2028, RSA E-mail: For this study, copper-containing multiwalled carbon nanotubes (MWCNTs) were synthesized “in situ” by using the electric arc discharge apparatus, and in a multi -step process using one of two wet techniques namely: an electroless plating and impregnate method respectively. The Cu-containing CNTs were then applied in water treatment. The MWCNTs that were used for the wet technique were synthesized by the nebulised spray pyrolysis using ferrocene/toluene under argon flow. These CNTs 0 were first purified by burning off the amorphous carbon at 500 C in an oven, and then immersing in hydrochloric acid (HCl) to remove the iron catalyst used during the synthesis. Hydroxylic and carboxylic groups were then generated on the CNTs’ surface by treating them with concentrate d nitric acid (HNO3). The MWCNTs were characterized with Fourier transform Infrared Spectroscopy (FT -IR), Scanning Electron Microscopy (SEM), Thermogravimetric Analysis (TGA) and Energy Dispersive X -ray Spectroscopy 2+ (EDX). Application of the Cu-containing CNTs was investigated in the removal of mercury (Hg ), one of the heavy metals present in some polluted soils, especially near industrial areas and hazardous waste 2+ water sites via batch studies. The Hg concentration was determined using Graphite furnace Atomic Absorption Spectrometry (AAS). Water samples inoculated with Escherichia coli ( E. coli) were also treated with the Cu-containing CNTs to ascertain their antibacterial activities. Results obtained for both treated and untreated water were then compared. * 115 23rd-25th June 2010 3rd ICYC 2010 Universiti Sains Malaysia ORAL PRESENTATION (INDUSTRIAL) IND-O1 BENCH TESTS EVALUATION ON THE IMPACT OF BIODIESEL FATTY ACID METHYL ESTER TO LUBRICANT PERFORMANCE Norhidayah Ahmad Wazir and Ismail Yu...
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This note was uploaded on 02/17/2011 for the course CHEMISTRY 101 taught by Professor Csr during the Spring '11 term at University of Louisville.

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