COMPOSITIONS AND PROCESSES FOR REMOVING HEAVY METALS FROM PHOSPHORIC ACID CONTAINING STREAMS

COMPOSITIONS AND PROCESSES FOR REMOVING HEAVY METALS FROM PHOSPHORIC ACID CONTAINING STREAMS

Compositions and processes for removing/recovering heavy metal ions in s phosphoric acid containing streams by adding reagents having at least one dialkyldithiophosphate compound, with the alkyl chain length of C8 to C18, at least one dialkyldithiophosphinate compound, and at least one surfactant to...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: BALLENTINE, Franklyn, CALBICK, Joseph, TOKMIC, Kenan, HIREMATH, Ravi Rajshekar, ZHANG, Lei, MOSER, Michael
Format: Patent
Sprache:eng ; fre
Schlagworte:
CHEMISTRY
COMPOUNDS THEREOF
FERROUS OR NON-FERROUS ALLOYS
INORGANIC CHEMISTRY
METALLURGY
NON-METALLIC ELEMENTS
PRETREATMENT OF RAW MATERIALS
PRODUCTION AND REFINING OF METALS
TREATMENT OF ALLOYS OR NON-FERROUS METALS
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Online-Zugang:Volltext bestellen
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:Compositions and processes for removing/recovering heavy metal ions in s phosphoric acid containing streams by adding reagents having at least one dialkyldithiophosphate compound, with the alkyl chain length of C8 to C18, at least one dialkyldithiophosphinate compound, and at least one surfactant to a phosphoric acid solution or slurry to form heavy metal ion complexes, and separating the heavy metal ion complexes from the solution or slurry are provided herein. L'invention concerne des compositions et des procédés pour éliminer/récupérer des ions de métaux lourds dans des flux contenant de l'acide phosphorique par ajout de réactifs ayant au moins un composé de dialkyldithiophosphate, avec la longueur de chaîne alkyle de C8 à C18, au moins un composé de dialkyldithiophosphinate, et au moins un tensioactif à une solution ou une suspension d'acide phosphorique pour former des complexes d'ions de métaux lourds, et séparer les complexes d'ions de métaux lourds de la solution ou de la suspension.