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Inactivation of Escherichia coli by ultraviolet light and hydrogen peroxide in a thin film contactor
Author(s) -
Sham G.
Publication year - 1992
Publication title -
letters in applied microbiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.698
H-Index - 110
eISSN - 1472-765X
pISSN - 0266-8254
DOI - 10.1111/j.1472-765x.1992.tb00778.x
Subject(s) - hydrogen peroxide , escherichia coli , ultraviolet , irradiation , thin film , chemistry , ultraviolet light , peroxide , photochemistry , nuclear chemistry , materials science , biochemistry , organic chemistry , nanotechnology , optoelectronics , physics , gene , nuclear physics
Apparatus for irradiating enclosed thin liquid films with ultraviolet (u.v.) light (Λ= 253.7 nm) in combination with hydrogen peroxide was used to inactivate Escherichia coli in water. Hydrogen peroxide concentrations of 2.5, 5.0 and 10.0 g/I were used and in each case synergistic inactivation was observed. At the highest concentration, a fractional survival of 1.3 times 10 ‐3 was obtained after 20 min; this was decreased to 3.1 times 10 ‐6 by simultaneous u.v. irradiation.