Thiobacillus thiooxidans growth inhibitor
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United States of America Patent
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Nov 14, 2000
Grant Date -
N/A
app pub date -
May 26, 1998
filing date -
Sep 30, 1996
priority date (Note) -
Expired
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Abstract
A Thiobacillus thiooxidans growth inhibitor containing as the active ingredient at least one substance selected from the group consisting of a tungsten powder and tungsten compounds. Under acidic conditions of pH value of 4 or less, this growth inhibitor sufficiently inhibits the growth of T. thiooxidans. When added in a very small amount to, for example, a structural material such as concrete in a sewage disposal plant, etc., it can therefore inhibit the growth of T. thiooxidans without substantially decreasing the strength, etc. of the structural material per se.
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