Effluent treatment with hydrotalcite
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United States of America Patent
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-
Dec 8, 1998
Grant Date -
N/A
app pub date -
Aug 19, 1996
filing date -
Dec 23, 1993
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Effluents containing residual dyes are contacted with an effective amount of hydrotalcite-like material together with an effective amount of a magnesium salt or a mixture of magnesium salts, the weight ratio (on dry basis) of hydrotalcite-like material to magnesium salt being in the range of 20:1 to 1:20. Residual dyes are removed from effluents.
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