Method for removing dyestuff in dyeing waste and a dyeing stuff

Details Method for removing dyestuff in dyeing waste and a dyeing stuff Method for removing dyestuff in dyeing waste and a dyeing stuff

1997-06-18

1998-12-08

Straub, Gary P.

Liquid purification or separation

Processes

Ion exchange or selective sorption

210694, 502410, 502413, B01J 2012

Patent

active

058464310

ABSTRACT:
A preparation for removing dyestuff in dyeing waste water includes a carbonized carbonaceous material and powdery or granular bakuhanseki deposited on the surface of the carbonized carbonaceous material. In one aspect of the invention, a preparation for removing dyestuff in dyeing waste water includes a carbonized carbonaceous material and at least one compound selected from the group consisting of silicic acid anhydride, aluminum oxide, magnesium oxide, potassium oxide, sodium oxide, calcium oxide, ferrous oxide, ferric oxide, titanium oxide, phosphorous pentaoxide and manganese oxide, said compound being deposited on the surface of the carbonized carbonaceous material. There is also provided a method for removing dyestuff in dyeing waste water by adding these dyestuff removing preparations.

REFERENCES:
patent: 5611853 (1997-03-01), Morimoto

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