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
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)
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)
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 | A kind of processing method of heavy metal wastewater thereby |
Family Cites Families (3)
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 |
EP0078051B1 (en) * | 1981-10-28 | 1986-09-17 | Hoechst Aktiengesellschaft | 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 |
-
1988
- 1988-04-12 FR FR8804804A patent/FR2629812B1/en not_active Expired - Fee Related
- 1988-12-29 MA MA21705A patent/MA21462A1/en unknown
Also Published As
Publication number | Publication date |
---|---|
FR2629812A1 (en) | 1989-10-13 |
FR2629812B1 (en) | 1991-01-25 |
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