TNSN87088A1 - Procede pour l'elimination des metaux lourd des milieux aqueux acides, contenant du phosphate - Google Patents

Procede pour l'elimination des metaux lourd des milieux aqueux acides, contenant du phosphate

Info

Publication number
TNSN87088A1
TNSN87088A1 TNTNSN87088A TNSN87088A TNSN87088A1 TN SN87088 A1 TNSN87088 A1 TN SN87088A1 TN TNSN87088 A TNTNSN87088 A TN TNSN87088A TN SN87088 A TNSN87088 A TN SN87088A TN SN87088 A1 TNSN87088 A1 TN SN87088A1
Authority
TN
Tunisia
Prior art keywords
heavy metals
removal
aqueous acid
containing phosphate
acid media
Prior art date
Application number
TNTNSN87088A
Other languages
English (en)
Inventor
Anna Janssen Johannes
Antonius Maria Weterings Cornelis
Original Assignee
Stamicarbon
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 Stamicarbon filed Critical Stamicarbon
Publication of TNSN87088A1 publication Critical patent/TNSN87088A1/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
    • A62D3/00—Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances
    • A62D3/30—Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances by reacting with chemical agents
    • A62D3/33—Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances by reacting with chemical agents by chemical fixing the harmful substance, e.g. by chelation or complexation
    • 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
    • C01B25/18—Phosphoric acid
    • C01B25/22—Preparation by reacting phosphate-containing material with an acid, e.g. wet process
    • C01B25/222—Preparation by reacting phosphate-containing material with an acid, e.g. wet process with sulfuric acid, a mixture of acids mainly consisting of sulfuric acid or a mixture of compounds forming it in situ, e.g. a mixture of sulfur dioxide, water and oxygen
    • C01B25/223—Preparation by reacting phosphate-containing material with an acid, e.g. wet process with sulfuric acid, a mixture of acids mainly consisting of sulfuric acid or a mixture of compounds forming it in situ, e.g. a mixture of sulfur dioxide, water and oxygen only one form of calcium sulfate being formed
    • C01B25/226—Hemihydrate process
    • 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
    • C01B25/18—Phosphoric acid
    • C01B25/22—Preparation by reacting phosphate-containing material with an acid, e.g. wet process
    • C01B25/222—Preparation by reacting phosphate-containing material with an acid, e.g. wet process with sulfuric acid, a mixture of acids mainly consisting of sulfuric acid or a mixture of compounds forming it in situ, e.g. a mixture of sulfur dioxide, water and oxygen
    • C01B25/228—Preparation by reacting phosphate-containing material with an acid, e.g. wet process with sulfuric acid, a mixture of acids mainly consisting of sulfuric acid or a mixture of compounds forming it in situ, e.g. a mixture of sulfur dioxide, water and oxygen one form of calcium sulfate being formed and then converted to another form
    • C01B25/229—Hemihydrate-dihydrate process
    • C01B25/2295—Hemihydrate-dihydrate process the conversion being performed in one or more vessels different from those used for reaction after separation of phosphoric acid
    • 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
    • C01B25/18—Phosphoric acid
    • C01B25/234—Purification; Stabilisation; Concentration
    • C01B25/237—Selective elimination of impurities
    • C01B25/238—Cationic impurities, e.g. arsenic compounds
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F11/00—Compounds of calcium, strontium, or barium
    • C01F11/46—Sulfates
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05B—PHOSPHATIC FERTILISERS
    • C05B11/00—Fertilisers produced by wet-treating or leaching raw materials either with acids in such amounts and concentrations as to yield solutions followed by neutralisation, or with alkaline lyes
    • C05B11/04—Fertilisers produced by wet-treating or leaching raw materials either with acids in such amounts and concentrations as to yield solutions followed by neutralisation, or with alkaline lyes using mineral acid
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
    • A62D2101/00—Harmful chemical substances made harmless, or less harmful, by effecting chemical change
    • A62D2101/20—Organic substances
    • A62D2101/24—Organic substances containing heavy metals
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
    • A62D2101/00—Harmful chemical substances made harmless, or less harmful, by effecting chemical change
    • A62D2101/40—Inorganic substances
    • A62D2101/43—Inorganic substances containing heavy metals, in the bonded or free state

Abstract

PROCEDE POUR L'ELIMINATION DES METAUX LOURDS D'UN MILIEU LIQUIDE, ACIDE, CONTENANT DU PHOSPHATE, DANS LEQUEL IL SE FORME UN PRECIPITE CONTENANT DES METAUX LOURDS ET QUE L'ON SEPARE ULTERIEUREMENT ET DANS LEQUEL ON AJOUTE AU MOINS UN DES DEUX ADDITIFS, A) IONS SULFATE ET B) IONS CALCIUM, AU MILIEU LIQUIDE CONTENANT DU PHOSPHATE DANS DES CONDITIONS TELLES QU'IL SE FORME UN PRECIPITE CONTENANT DU SULFATE DE CALCIUM-ANHYDRITE
TNTNSN87088A 1986-07-15 1987-07-15 Procede pour l'elimination des metaux lourd des milieux aqueux acides, contenant du phosphate TNSN87088A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL8601846A NL8601846A (nl) 1986-07-15 1986-07-15 Werkwijze voor het verwijderen van zware metalen uit zure fosfaathoudende waterige media.

Publications (1)

Publication Number Publication Date
TNSN87088A1 true TNSN87088A1 (fr) 1990-01-01

Family

ID=19848319

Family Applications (1)

Application Number Title Priority Date Filing Date
TNTNSN87088A TNSN87088A1 (fr) 1986-07-15 1987-07-15 Procede pour l'elimination des metaux lourd des milieux aqueux acides, contenant du phosphate

Country Status (13)

Country Link
US (1) US4822582A (fr)
EP (1) EP0253454B1 (fr)
AT (1) ATE58358T1 (fr)
CA (1) CA1327113C (fr)
DE (1) DE3766173D1 (fr)
ES (1) ES2019372B3 (fr)
FI (1) FI82827C (fr)
GR (1) GR3001466T3 (fr)
IL (1) IL83181A (fr)
MA (1) MA21033A1 (fr)
NL (1) NL8601846A (fr)
TN (1) TNSN87088A1 (fr)
ZA (1) ZA875147B (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2649391B1 (fr) * 1989-07-04 1991-10-31 Pierre Becker Procede de traitement de l'acide phosphorique pour en eliminer certains metaux lourds
FR2652076B1 (fr) * 1989-09-20 1992-03-20 Rhone Poulenc Chimie Procede de recuperation des valeurs de terres rares dans les gypses.
US5102556A (en) * 1990-03-30 1992-04-07 Union Oil Company Of California Method for rendering ferric hydroxide sludges recyclable
TNSN92119A1 (fr) * 1992-02-07 1993-06-08 Ct D Etudes Et De Rech S Des Phosphates Mineraux Cerphos Procede de fabrication d'acide phosphorique marchand a tres basse teneur en cadmium
EP2132347B1 (fr) * 2007-03-06 2011-06-01 Centre D'etudes Et De Recherches Des Phosphates Mineraux Procede de traitement de solides cadmiferes
WO2014027348A1 (fr) * 2012-08-16 2014-02-20 Rotem Amfert Negev Ltd. Procédé de fabrication d'acide phosphorique à teneur en cadmium réduite
FR3117476B1 (fr) 2020-12-10 2023-04-21 Ocp Sa Procede integre de decadmiation d’acide phosphorique

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1601208A (en) * 1921-02-03 1926-09-28 Fed Phosphorus Co Process of purifying phosphoric acid
US2081351A (en) * 1934-09-13 1937-05-25 Monsanto Chemicals Process for the treatment of phosphoric acid
DE2218382C3 (de) * 1972-04-15 1975-08-21 Gebrueder Giulini Gmbh, 6700 Ludwigshafen Verfahren zur Herstellung von reinem Calciumsulfat beim Phosphorsäurenaßaufschluß
SE418845B (sv) * 1979-05-10 1981-06-29 Boliden Ab Forfarande for rening av vatprocessfosforsyra
JPS5933526B2 (ja) * 1980-07-28 1984-08-16 セントラル硝子株式会社 ウラン含有量の多い湿式リン酸の製造方法
US4388292A (en) * 1981-12-14 1983-06-14 United States Gypsum Company Process for reducing radioactive contamination in phosphogypsum

Also Published As

Publication number Publication date
ZA875147B (en) 1988-03-30
DE3766173D1 (de) 1990-12-20
ES2019372B3 (es) 1991-06-16
MA21033A1 (fr) 1988-04-01
GR3001466T3 (en) 1992-10-08
EP0253454A1 (fr) 1988-01-20
FI82827C (fi) 1991-04-25
FI873107A0 (fi) 1987-07-14
FI82827B (fi) 1991-01-15
EP0253454B1 (fr) 1990-11-14
NL8601846A (nl) 1988-02-01
ATE58358T1 (de) 1990-11-15
FI873107A (fi) 1988-01-16
CA1327113C (fr) 1994-02-22
IL83181A (en) 1991-04-15
IL83181A0 (en) 1987-12-31
US4822582A (en) 1989-04-18

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.
FR2438096A1 (fr) Procede d'extraction du gallium d'une argile calcinee
ES8601293A1 (es) Procedimiento para refinar de nuevo aceites lubricantes usados
MA21033A1 (fr) Procede pour l'elimination des metaux lourds des milieux aqueux acides contenant du phosphate .
GB1498337A (en) Cleaning of oils contaminated with metal particles
GB1478345A (en) Process for purifying water containing suspended matter
DE69201366T2 (de) Entfernen von Metallen aus wässrigen Peroxysäuren oder Peroxysalzen.
MA21898A1 (fr) Procede de traitement de l'acide phosphorique pour en eliminer certains metaux lourds .
GB1409460A (en) Process for the purification of industrial effluent
FR2536899B1 (fr) Procede pour la denitrification de solutions residuaires aqueuses d'acide nitrique contenant des sels
JPS6328492A (ja) 洗煙排液処理方法
SU372180A1 (fr)
FR2476629B2 (fr) Procede et installation pour l'elimination de la pollution carbonee et azotee des eaux usees
SE8505905L (sv) Forfarande for rening av saltsura jern(ii)-kloridlosningar
FR2406004A1 (fr) Procede pour purifier une solution aqueuse d'un halogenure de metal alcalin pour l'electrolyse
SU362568A1 (ru) ФЩ|ЛЧпН 1"Ofei^R! и ITj^г. М. Посыпайко, А. И. Ольферт, А. М. Яковенко, В. X. Конторович,и Череповецкий ордена Ленина металлургический завод
SU905206A1 (ru) Коагул нт минеральных суспензий
JPS5765380A (en) Removal of phosphorus from waste water
FR2462924B1 (fr) Procede pour reduire la teneur en nickel d'une solution aqueuse contenant des ions de cobalt (ii)
SU1188104A1 (ru) Способ очистки сточных вод от трибутилфосфата
FR2554434B1 (fr) Procede de traitement d'effluents aqueux nitriques acides contenant de l'acide oxalique, utilisable en particulier pour traiter les eaux-meres de precipitation de l'oxalate de plutonium
SU1527193A1 (ru) Способ предотвращени отложений солей
GB1334487A (en) Phosphorus removal from phosphorus-bearing liquors
MA20569A1 (fr) Procede pour le traitement et l'epuration des eaux,profisenlation enlit fluidise des particules en suspension
SU633808A1 (ru) Способ очистки раствора монохромата натри