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

Widi, Restu Kartiko and Savitri, Emma and Budhyantoro, Arief (2017) Antibacterial Inactivation of Escherichia coli after TiO2-Fe3O4-Bentonite Photocatalytic Treatment. International Journal of Applied Science Engineering and Technology. ISSN 2221-0997 (Print), 2221-1004 (Online) (Submitted)

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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 were 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 kinetic of Escherichia coli using TiO2-Fe3O4-Bentonite photocatalytic material system satisfactorily obeyed the Hom kinetic model.

Item Type: Article
Subjects: T Technology > TP Chemical technology
Divisions: Faculty of Engineering > Department of Chemical Engineering
Depositing User: Emma Savitri 202034
Date Deposited: 25 Sep 2018 08:37
Last Modified: 24 Mar 2021 15:54

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