Antibacterial Inactivation of Escherichia coli after TiO2-Fe3O4-Bentonite Photocatalytic Treatment

Widi, Restu Kartiko and Savitri, Emma and Angelina , Olivia and Caroline, Sherlly and Budhyantoro, Arief (2018) Antibacterial Inactivation of Escherichia coli after TiO2-Fe3O4-Bentonite Photocatalytic Treatment. International Journal on Advanced Science, Engineeering and Information Technology, 8 (6). pp. 2367-2373. ISSN 2088 - 5334

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Abstract

TiO2-Fe3O4–Bentonite photocatalytic material has been developed to inactivate of Escherichia coli. The photocatalytic inactivation of Escherichia coli was conducted in a reactor under ultraviolet (325 nm) exposing. The photocatalytic degradation was observed for 5 hours to determine the optimum initial bacteria concentration, intensity of UV light and also photocatalyst concentration. The inactivation kinetic was approached by Chick-Watson and Hom kinetic models. The colonies calculations were conducted by Total Plate Count. The optimum condition was achieved for 300 minutes process to reach 7 bacterial log reduction units for an average bacterial inoculum size of 3.8 × 104 CFU/ml. The inactivation kinetics of Escherichia coli using TiO2-Fe3O4-Bentonite photocatalytic material system satisfactorily obeyed the Hom kinetic model.

Item Type: Article
Uncontrolled Keywords: TiO2; photocatalytic; disinfection; inactivation kinetics; E.coli
Subjects: Q Science > QD Chemistry
T Technology > TP Chemical technology
Divisions: Faculty of Engineering > Department of Chemical Engineering
Depositing User: Restu Kartiko Widi 6178
Date Deposited: 07 Jan 2019 07:58
Last Modified: 07 Jan 2019 07:58
URI: http://repository.ubaya.ac.id/id/eprint/34070

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