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MA21462A1 - PROCESS FOR REMOVING HEAVY METALS, ESPECIALLY CADMIUM, CONTAINED IN PHOSPHORIC ACID. - Google Patents

PROCESS FOR REMOVING HEAVY METALS, ESPECIALLY CADMIUM, CONTAINED IN PHOSPHORIC ACID.

Info

Publication number
MA21462A1
MA21462A1 MA21705A MA21705A MA21462A1 MA 21462 A1 MA21462 A1 MA 21462A1 MA 21705 A MA21705 A MA 21705A MA 21705 A MA21705 A MA 21705A MA 21462 A1 MA21462 A1 MA 21462A1
Authority
MA
Morocco
Prior art keywords
contained
phosphoric acid
heavy metals
removing heavy
especially cadmium
Prior art date
Application number
MA21705A
Other languages
French (fr)
Original Assignee
Cerphos
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Cerphos filed Critical Cerphos
Publication of MA21462A1 publication Critical patent/MA21462A1/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B25/00—Phosphorus; Compounds thereof
    • C01B25/16—Oxyacids of phosphorus; Salts thereof
    • C01B25/46—Preparation involving solvent-solvent extraction
    • C01B25/461—Preparation involving solvent-solvent extraction the phosphoric acid present in the medium obtained after reaction being first extracted from the liquid phase formed or separated then re-extracted as free acid by using water or as a phosphate by using a basic compound
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B25/00—Phosphorus; Compounds thereof
    • C01B25/16—Oxyacids of phosphorus; Salts thereof
    • C01B25/46—Preparation involving solvent-solvent extraction
    • C01B25/461—Preparation involving solvent-solvent extraction the phosphoric acid present in the medium obtained after reaction being first extracted from the liquid phase formed or separated then re-extracted as free acid by using water or as a phosphate by using a basic compound
    • C01B25/462—Preparation involving solvent-solvent extraction the phosphoric acid present in the medium obtained after reaction being first extracted from the liquid phase formed or separated then re-extracted as free acid by using water or as a phosphate by using a basic compound the extracting agent being alcohol or a mixture of alcohols

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Analytical Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
MA21705A 1988-04-12 1988-12-29 PROCESS FOR REMOVING HEAVY METALS, ESPECIALLY CADMIUM, CONTAINED IN PHOSPHORIC ACID. MA21462A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8804804A FR2629812B1 (en) 1988-04-12 1988-04-12 PROCESS FOR REMOVAL OF HEAVY METALS, ESPECIALLY CADMIUM, CONTAINED IN PHOSPHORIC ACID

Publications (1)

Publication Number Publication Date
MA21462A1 true MA21462A1 (en) 1989-07-01

Family

ID=9365212

Family Applications (1)

Application Number Title Priority Date Filing Date
MA21705A MA21462A1 (en) 1988-04-12 1988-12-29 PROCESS FOR REMOVING HEAVY METALS, ESPECIALLY CADMIUM, CONTAINED IN PHOSPHORIC ACID.

Country Status (2)

Country Link
FR (1) FR2629812B1 (en)
MA (1) MA21462A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5242061B2 (en) * 2007-02-08 2013-07-24 日本リファイン株式会社 Method and apparatus for obtaining purified phosphoric acid from aqueous phosphoric acid solution containing a plurality of metal ions
CN109205905A (en) * 2018-10-19 2019-01-15 东莞理工学院 Heavy metal wastewater treatment method

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3529932A (en) * 1966-10-31 1970-09-22 Toyo Soda Mfg Co Ltd Process for removing titanium from titanium-containing phosphoric acid
DE3273369D1 (en) * 1981-10-28 1986-10-23 Hoechst Ag Process for separating heavy metal values from intermediate products in the manufacture of phosphatic fertilizers
FR2520342A1 (en) * 1982-01-25 1983-07-29 Rhone Poulenc Chim Base PROCESS FOR PURIFYING PHOSPHORIC ACID FROM WETWAY

Also Published As

Publication number Publication date
FR2629812A1 (en) 1989-10-13
FR2629812B1 (en) 1991-01-25

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