Method of producing multi-functional filtering medium

Details Method of producing multi-functional filtering medium Method of producing multi-functional filtering medium

1986-04-28

1988-10-18

Cintins, Ivars

Liquid purification or separation

Filter

Material

B01D 3904

Patent

active

047786027

ABSTRACT:
A filtering medium is economically produced by treating a highly humified peat source with an alkaline solution followed by mixing with a quaternary amine compound until the humic and fulvic acids have precipitated. A filter cake is formed from the residue by various means including acid oxidation, heating with or without acid reagent or by semi-coking to produce a final dried poduct having excellent filtering properties for hydrophobic compounds, as well as ion-exchange capacities for both anions and cations from aqueous solution.

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patent: 4459149 (1986-07-01), Moran et al.
patent: 4608397 (1986-08-01), Reischl

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