Activated Carbon-Fly Ash-Nanometal Oxide Composite Materials: Preparation, Characterization, and Tributyltin Removal Efficiency. (8th November 2012)

• Record Type: Journal Article
• Authors: Ayanda, Olushola S.; Fatoki, Olalekan S.; Adekola, Folahan A.; Ximba, Bhekumusa J.
• Other Names: Ritieni Alberto Academic Editor.
• Is Part Of: Journal of chemistry. Volume 2013(2013)
• Publication Date: 2012-11-08
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1155/2013/148129
• Languages: English
• ISSNs: 2090-9063

Abstract

Abstract : The physicochemical properties, nature, and morphology of composite materials involving activated carbon, fly ash, nFe3 O4, nSiO2, and nZnO were investigated and compared. Nature and morphology characterizations were carried out by means of scanning electron and transmission electron microscopy, X-ray diffraction, and Fourier transform infrared spectroscopy. Other physicochemical characterizations undertaken were CNH analysis, ash content, pH, point of zero charge, and surface area and porosity determination by BET. Experimental results obtained revealed that activated carbon, nSiO2, activated carbon-fly ash, activated carbon-fly ash-nFe3 O4, activated carbon-fly ash-nSiO2, and activated carbon-fly ash-nZnO composite materials exhibited net negative charge on their surfaces while fly ash, nFe3 O4, and nZnO possessed net positive charge on their surfaces. Relatively higher removal efficiency (>99%) of TBT was obtained for all the composite materials compared to their respective precursors except for activated carbon. These composite materials therefore offer great potential for the remediation of TBT in wastewaters.