MA21462A1 - Procede d'elimination des metaux lourds et notamment du cadmium, contenus dans l'acide phosphorique. - Google Patents

Procede d'elimination des metaux lourds et notamment du cadmium, contenus dans l'acide phosphorique.

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
English (en)
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/fr

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 Procede d'elimination des metaux lourds et notamment du cadmium, contenus dans l'acide phosphorique. MA21462A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8804804A FR2629812B1 (fr) 1988-04-12 1988-04-12 Procede d'elimination des metaux lourds, et notamment du cadmium, contenus dans l'acide phosphorique

Publications (1)

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

Family

ID=9365212

Family Applications (1)

Application Number Title Priority Date Filing Date
MA21705A MA21462A1 (fr) 1988-04-12 1988-12-29 Procede d'elimination des metaux lourds et notamment du cadmium, contenus dans l'acide phosphorique.

Country Status (2)

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

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5242061B2 (ja) * 2007-02-08 2013-07-24 日本リファイン株式会社 複数の金属イオンを含むリン酸水溶液から精製リン酸を得る方法及び装置
CN109205905A (zh) * 2018-10-19 2019-01-15 东莞理工学院 一种重金属废水的处理方法

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
EP0078051B1 (fr) * 1981-10-28 1986-09-17 Hoechst Aktiengesellschaft Procédé de séparation de la fraction métaux lourds de produits intermédiaires de la fabrication d'engrais phosphatés
FR2520342A1 (fr) * 1982-01-25 1983-07-29 Rhone Poulenc Chim Base Procede de purification d'acide phosphorique de voie humide

Also Published As

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

Similar Documents

Publication Publication Date Title
MA21503A1 (fr) Procede pour l'elimination des metaux lourds partienlier du cadminum, des solutions contenant de l'acide perosphorique.
MA19789A1 (fr) Procede de reduction des minerais de phosphate .
MA21922A1 (fr) Procede de purification d'acides aminomethylene-phosphoniques .
FR2639047B1 (fr) Procede de recuperation d'acides humiques
ES2068000T3 (es) Separacion de metales de peroxiacidos o peroxisales acuosos.
MA21898A1 (fr) Procede de traitement de l'acide phosphorique pour en eliminer certains metaux lourds .
MA23302A1 (fr) Procede pour la separation du plomb et du cadmuim de l'acide phosphorique .
MA21046A1 (fr) Procede destine au traitement complementaire de solutions aqueuses d'acide fluosilicique .
MA21462A1 (fr) Procede d'elimination des metaux lourds et notamment du cadmium, contenus dans l'acide phosphorique.
EP0312191A3 (en) Process for purifying methacrylic acid
FR2560187B1 (fr) Procede de recuperation de l'acide methacrylique
FR2657260B1 (fr) Procede et composition permettant de purifier l'amphotericine b..
FR2694000B1 (fr) Perfectionnement dans un procede de preparation de tertiobutylphenols.
MA20585A1 (fr) Procede pour eliminer l'arsenic de solutions d'acides phosphoriques
MA21853A1 (fr) Procede ameliore d'elimination des ions cadmium contenus dans l'acide phosphorique obtenu par voie humide .
FR2512431B1 (fr) Procede pour la decomposition electrochimique de l'acide nitrique
RO89422A (fr) Procede pour la separation de l'arsenic de solutions acides
FR2669330B1 (fr) Procede de preparation de l'acide betha-mercaptopropionique.
FR2583403B1 (fr) Procede de separation, par precipitation, du molybdene contenu dans des solutions sulfuriques ou nitriques d'uranium.
FR2661845B1 (fr) Procede d'enrichissement de l'andalousite par flottation.
ZA881569B (en) Method for removing organic materials dissolved in purified phosphoric acid
FR2536061B1 (fr) Procede pour ameliorer l'efficacite de la decontamination en ruthenium dans le traitement de l'acide nitrique par evaporation
BE883419A (fr) Perfectionnement au procede de recuperation de l'uranium d'un acide phosphorique impur
FR2618861B1 (fr) Procede pour solidariser deux plaques metalliques, notamment pour plaques d'immatriculation
FR2567393B1 (fr) Procede photodigital, permettant l'amelioration de l'etude de l'empreinte plantaire