Method of treating the arsenic containing filter media from phos

Details Method of treating the arsenic containing filter media from phos Method of treating the arsenic containing filter media from phos

1985-07-05

1987-03-24

Hruskoci, Peter

Liquid purification or separation

Processes

Making an insoluble substance or accreting suspended...

210772, 210797, 210911, 423 87, 423321R, B01D 4102

Patent

active

046523804

ABSTRACT:
Filter cake waste media from a phosphoric acid purification process containing contaminating amounts of arsenic is treated in the process of this invention to remove the arsenic therefrom and to render the filter media suitable for reuse. The process of the invention comprises separating the arsenic contaminant from the filter material by treating the material with sufficient amount of a base, such as soda ash, to dissolve the contaminating arsenic compounds into solution and separating and recovering the filter media from the arsenic-containing solution. The separated arsenic can be recovered by reprecipitation utilizing an acid and a source of soluble sulfide ions.

REFERENCES:
patent: 3608721 (1971-09-01), Lopker
patent: 4215098 (1980-07-01), Lowe et al.
patent: 4369168 (1983-01-01), Wells et al.
patent: 4547295 (1985-10-01), Carr, Jr. et al.

Affiliated with

Also associated with

Rating

Method of treating the arsenic containing filter media from phos does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of treating the arsenic containing filter media from phos, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of treating the arsenic containing filter media from phos will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1352516