The Inactivation of Escherichia Coli by Microalloyed Aluminium Based Composite Udc 628.161.3 + 546.62
نویسندگان
چکیده
The inactivation of Escherichia coli by microalloyed aluminium based composite was studied. The composite is material in form of steel wire, plated by microalloyed aluminium. Its effects are based on spontaneous dissolution in contact with water, with generation of Al(III) and OH ̄ ions, and finally voluminous insoluble Al(OH)3. Bearing in mind its great efficacy in purification of water from many chemical pollutants, efficient inactivation of microbiological pollutant of water – E. coli, was expected, too. The experiments were carried out with the water model-solutions (WMS) based on adapted natural surface water, inoculated by the E. coli. Treatments were performed in the original semi-flow system (SFS). The results show that approximately at every 10 min, the number of E. coli bacteria was reduced for about one log10 count, with complete inactivation as the outcome of the treatment. At the end of the treatment, the Al(OH)3 precipitate still contained the low amount of coprecipitated E. coli bacteria, which died in relatively short period.
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The disinfection of water by microalloyed aluminium-based composite.
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