Decomposition of bromate ions by semiconductor photocatalysis

Conference · Tue Oct 01 00:00:00 EDT 1996

OSTI ID:370841

Mills, A; Belghazi, A ^[1]

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1. Swansea Univ. (United Kingdom)

Bromate is a cancer suspect agent which is often generated as a side-product in the purification of potable water by ozonolysis. We have found that the removal of bromate from potable water can be effected by semiconductor photocatalysis. Platinised titanium dioxide appears particularly effective as a photocatalyst for the decomposition of bromate into water and bromide. The kinetics of this process are reported as a function of pH, [Pt-TiO{sub 2}], [BrO{sub 3}{sup -}], [Br{sup -}], light intensity and ionic strength, using bromate concentrations at the ppm level. The results of a kinetic study conducted using bromate concentrations at the ppb level are also reported In this latter work the Pt-TiO{sub 2} is used, either as a dispersion, or as a thin fibre in a quartz photoreactor with 254 nm UV light.

• OSTI ID: 370841
• Report Number(s): CONF-960376-; TRN: 96:003805-0903
• Resource Relation: Conference: Spring national meeting of the American Chemical Society (ACS), New Orleans, LA (United States), 24-28 Mar 1996; Other Information: PBD: 1996; Related Information: Is Part Of 211th ACS national meeting; PB: 2284 p.
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
40 CHEMISTRY
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
05 NUCLEAR FUELS
TITANIUM OXIDES
CATALYTIC EFFECTS
PHYSICAL PROPERTIES
BROMATES
DECOMPOSITION
DRINKING WATER
PURIFICATION
PLATINUM
IRRADIATION
PHOTOCHEMICAL REACTIONS
WASTE PROCESSING
WASTE WATER
PH VALUE
THIN FILMS