B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
B01D 61/48 (2006.01)
Patent
CA 2528750
A process is provided for separating, concentrating and recovery of boron compound from aqueous solution containing boron, strongly dissociated anions and some cations. The process specifically integrates electrodialysis with ion exchange to selectively separate boron from aqueous solution that contains a wide concentration range of boron, strongly ionised anions such as chloride, nitrate and sulfate, and cations like lithium. The process is adapted for controlling boron concentration in an industrial process, for the recovery or purification of boron and some cations like lithium form aqueous solutions, and for wastewater treatment.
L'invention concerne un procédé de séparation, de concentration et de récupération d'un composé de bore dans une solution aqueuse contenant du bore, des anions fortement dissociés et quelques cations. Ce procédé consiste à effectuer une électrodialyse spécifique avec échange d'ions pour séparer de manière sélective le bore de la solution aqueuse contenant une grande concentration de bore, des anions fortement ionisés tels que le chlorure, le nitrate et le sulfate, et des cations tels que le lithium. Ce procédé est adapté pour régler la concentration de bore dans un processus industriel, pour la récupération ou la purification du bore, certains cations tels que le lithium formant des solutions aqueuses, ainsi que dans le traitement des eaux usées.
Bengtsson Bernt
Velin Anna
Yan Jinying
Robic
Vattenfall Ab
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