Nitrohumic acid-containing adsorbents and process for producing

Details Nitrohumic acid-containing adsorbents and process for producing Nitrohumic acid-containing adsorbents and process for producing

1974-07-18

1977-03-22

Garvin, Patrick P.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

252426, 252428, 252430, 252431C, 210 38B, 210 41, 210DIG26, C02B 114, C02B 152

Patent

active

040135853

ABSTRACT:
New adsorbents comprising granules of a mixture of nitrohumic acid and one r more proteins. These adsorbents are utilizable effectively for adsorbing heavy metals and oils contained in water. They are produced advantageously by either a process wherein a mixture of nitrohumic acid and a protein is kneaded with an aqueous solution of alkali and the kneaded mixture is first subjected to an acid treatment and then shaped into granules, or a process wherein nitrohumic acid and a protein are dissolved in an aqueous solution of alkali, the solution is acidified to form a precipitate and then the precipitate is separated and shaped into granules. The granular products thus obtained can be further improved in mechanical strength by means of a heat treatment.

REFERENCES:
patent: 1966553 (1934-07-01), Kropp
patent: 2029966 (1936-02-01), Urbain et al.
patent: 2340111 (1944-01-01), D'Alelio
patent: 2664397 (1953-12-01), Hutchinson
patent: 3900422 (1975-08-01), Terajima et al.

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