Process for removing molybdenum from aqueous manganese salt solu

Details Process for removing molybdenum from aqueous manganese salt solu Process for removing molybdenum from aqueous manganese salt solu

1982-11-26

1984-07-31

Cintins, Ivars C.

Liquid purification or separation

Processes

Ion exchange or selective sorption

210688, 210722, 210912, B01D 1500

Patent

active

044629125

ABSTRACT:
The disclosure relates to a process for removing molybdenum from aqueous manganese(II)salt solutions by adsorbing the molybdenum on manganese dioxide and separating adsorbend and adsorbate from the purified manganese(II)salt solution. To this end, the disclosure provides for a pH value lower than 5 to be established in the manganese salt solution; for an oxidant capable of oxidizing manganese(II)compounds to manganese(IV)compounds to be added at temperatures between 50.degree. and 80.degree. C., so as to effect oxidation of a small proportion of dissolved manganese(II)salt to manganese dioxide; for resulting precipitate to be allowed to remain in contact over a period of at least 15 minutes with the manganese(II)salt solution, and for the precipitate to be separated from said solution at said temperatures.

REFERENCES:
patent: 2542743 (1951-02-01), Weymouth et al.
patent: 3340187 (1967-09-01), Bell
patent: 4189381 (1980-02-01), Laferty et al.

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