Process for the production of adsorbents of nitrohumic acid seri

Details Process for the production of adsorbents of nitrohumic acid seri Process for the production of adsorbents of nitrohumic acid seri

1975-02-24

1976-11-30

Garvin, Patrick P.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

252426, 210 41, B01D 1500, C02B 114

Patent

active

039948307

ABSTRACT:
An adsorbent of nitrohumic acid series with an improved alkali-resistance is prepared by insolubilizing calcium nitrohumate, kneading the insolubilized product with a water-soluble polyacrylamide in the presence of water, shaping the mixture into a desired form and then subjecting it to a heat treatment followed by an acid treatment. The adsorbent thus obtained can effectively be used for removing heavy metals from an alkaline effluent without causing any deterioration of adsorptive quality and coloration of the effluent.

REFERENCES:
patent: 2029966 (1936-02-01), Urbain et al.
patent: 3900422 (1975-08-01), Terajima et al.

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