Adsorbent compositions and methods of manufacture
AssigneeAkzo N.V.
InventorsThurman C. Thorpe, John F. Weaver
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Abstract
The present invention relates to non-resinous adsorbents and methods of manufacturing them. These agents have been found to neutralize or remove inhibitory and antimicrobial substances found in test samples and culture media.
Claims5
An adsorbent composition comprising as adsorbents activated carbon bound to fuller's earth with from about 20% to about 80% of activated carbon and about 20% to about 80% fuller's earth, said activated carbon and fuller's earth being bound together electrostatically using a mixture of resin comprising about 0.1% to about 0.7% powdered anion exchange resin, about 0.3% to about 1.3% cationic polyelectrolyte and about 0.01% to about 0.12% anionic polyelectrolyte, wherein all proportions are given as weight percents of the total composition.
An adsorbent composition comprising from about 20% to 80% of activated carbon, about 20% to 80% of fuller's earth, about 0.0032 gram of powdered anion exchange resin per gram of the activated carbon/fuller's earth, about 0.015 gram of dimethyl dialkyl ammonium chloride per gram of fuller's earth and about 0.001 gram of polyacrylamide per gram of activated carbon.
Dependencies are inferred from the claim text.