Preparation of activated carbonaceous material from sewage sludg

Details Preparation of activated carbonaceous material from sewage sludg Preparation of activated carbonaceous material from sewage sludg

1974-06-17

1976-12-21

Douglas, Winston A.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

201 25, 210 6, 210 40, 423449, B01J 3700, B01J 2118

Patent

active

039987566

ABSTRACT:
This invention relates to a process of preparing activated carbonaceous material from sewage sludge by treating the sludge with sulfuric acid and then subjecting the mixture to elevated temperatures of about 150.degree. to about 350.degree. C. The activated material can be used as an adsorbent in any of the conventional processes employing powdered activated carbon, for example, waste water treatment.

REFERENCES:
patent: 1251546 (1918-01-01), Lyon et al.
patent: 2171408 (1939-08-01), Smit
patent: 2191063 (1940-02-01), Smit
patent: 2245579 (1941-06-01), Davis
patent: 3619420 (1971-11-01), Kemmer et al.
patent: 3637487 (1972-01-01), Kemmer et al.
patent: 3640820 (1972-02-01), Kemmer et al.
patent: 3776856 (1973-12-01), Scheffler et al.

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