Method for removing traces of heavy metals from concentrated alk

Details Method for removing traces of heavy metals from concentrated alk Method for removing traces of heavy metals from concentrated alk

1997-09-15

1999-08-10

Nguyen, Ngoc-Yen

Chemistry of inorganic compounds

Halogen or compound thereof

Binary compound containing metal

4234991, 4234994, C01D 316

Patent

active

059355468

ABSTRACT:
A method is provided for removing traces of heavy metals from concentrated alkali metal chloride solutions down into the range of 0.01 ppm by coprecipitation from an acidic concentrated alkali metal chloride solution with iron oxide hydrate.

REFERENCES:
patent: 2982608 (1961-05-01), Clement
patent: 3310370 (1967-03-01), Kendall, Jr.
patent: 5021079 (1991-06-01), Nakane
patent: 5478447 (1995-12-01), Ninane et al.
Gary R. Legendre, et al., Environmental Science and Technology, vol. 9, No. 8, pp. 744-749, Aug. 1975, "Removal of Dissolved Molybdenum from Wastewaters by Precipitates of Ferric Iron".
Patent Abstracts of Japan, vol. 11, No. 124 (C-416), Apr. 17, 1987, JP 61-263607, Nov. 21, 1986.

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