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Waste-derived inosilicate carrier for antimicrobial Zn2+ and Ag+ ions

Waste-derived inosilicate carrier for antimicrobial Zn2+ and Ag+ ions

Coleman, N. J., Hurt, A. P., Elmes, V. K. and Rivett, M. J. (2018) Waste-derived inosilicate carrier for antimicrobial Zn2+ and Ag+ ions. In: 4th International Conference on Green Chemistry and Sustainable Engineering, 23-25 July 2018, Madrid, Spain. (In Press)

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Recent research by the authors has demonstrated that the inosilicate, lithium metasilicate (Li2SiO3), can be prepared by hydrothermal synthesis from waste green container glass (GCG) [1,2]. This study investigated the potential of this material to be ion-exchanged with antimicrobial Zn2+ or Ag+ ions for use as a filler in polymer composites. Antimicrobial polymer composites are an advantage in applications where the communication of pathogenic bacteria poses a problem, such as hospitals, abattoirs and food-processing factories. The naturally-occurring biodegradable mucopolysaccharide derivative, chitosan, was used as a model polymer in this study. The lithium metasilicate product was synthesised from GCG in LiOH(aq) and ion-exchanged with either Zn2+ or Ag+ ions via batch sorption. The in vitro antibacterial properties of solvent-cast metasilicate-chitosan composite membranes were then evaluated by zone of inhibition against Escherichia coli, Pseudomonas aeruginosa and Staphylococcus aureus.

Item Type: Conference or Conference Paper (Poster)
Uncontrolled Keywords: Recycled glass, silicate, antimicrobial, silver, zinc
Subjects: G Geography. Anthropology. Recreation > GE Environmental Sciences
Q Science > QD Chemistry
Faculty / School / Research Centre / Research Group: Faculty of Engineering & Science
Faculty of Engineering & Science > School of Science (SCI)
Last Modified: 08 Dec 2018 23:41

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