PROCESS FOR PREPARING AN ADSORBENT FOR PHOSPHATE IN AQUEOUS MEDIUM

PROCESS FOR PREPARING AN ADSORBENT FOR PHOSPHATE IN AQUEOUS MEDIUM

It relates to a process forproducing an adsorbent for adsorbing phosphate from aqueous medium comprising polynuclear iron (III) oxy-hydroxidestabilized by at least one constituent that inhibits ageing of the iron (III) oxy-hydroxidewhich is based on carrying out the desalinization step process by ta...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: MARQUILLAS OLONDRIZ, Francisco de Asís, POMARES MARCO, Marta, SALAET FERRÉ, Josep, GIRBAU CAPELLA, Berta
Format: Patent
Sprache:eng ; fre
Schlagworte:
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY
HUMAN NECESSITIES
HYGIENE
MEDICAL OR VETERINARY SCIENCE
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
SEPARATION
THEIR RELEVANT APPARATUS
TRANSPORTING
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Beschreibung
Zusammenfassung:It relates to a process forproducing an adsorbent for adsorbing phosphate from aqueous medium comprising polynuclear iron (III) oxy-hydroxidestabilized by at least one constituent that inhibits ageing of the iron (III) oxy-hydroxidewhich is based on carrying out the desalinization step process by tangential-flow filtration using tubular filtration membranesto remove salts from the system in the permeate and where the retentate is recirculated to the feed tank. Recirculation of the retentate improves salt separation effectiveness. L'invention concerne un processus de production d'un adsorbant pour l'adsorption de phosphate à partir d'un milieu aqueux comprenant du fer polynucléaire (III) oxy-hydrodéstabilisé par au moins un constituant qui inhibe le vieillissement du fer (III) oxy-hydroxidelequel est basé sur la mise en œuvre du processus de l'étape de dessalement par filtration tangentielle à l'aide d'une membrane de filtration tubulaire pour éliminer les sels du système dans le perméat et où le rétentat est remis en circulation dans le réservoir d'alimentation. La recirculation du rétentat améliore l'efficacité de séparation de sel.