Process for recovering organic hydroxides from waste solutions

Details Process for recovering organic hydroxides from waste solutions Process for recovering organic hydroxides from waste solutions

C - Chemistry, Metallurgy

02

F

C02F 1/461 (2006.01) C02F 1/469 (2006.01) C02F 9/00 (2006.01) C02F 1/24 (2006.01) C02F 1/28 (2006.01) C02F 1/44 (2006.01) C02F 1/68 (2006.01) C02F 1/78 (2006.01)

Patent

CA 2380839

In one embodiment, the present invention relates to a process for recovering an onium compound from waste solutions or synthetic solutions containing the onium compound and impurities including the steps: contacting the waste solution or synthetic solution with a metal ion scavenger to remove metal ion impurities, wherein the metal ion scavenger comprises at least one of a chelating compound, a nanoporous material, and a MACS material; charging the waste solution or synthetic solution to an electrochemical cell (10) containing at least two compartments (14, 15), a cathode (12), an anode (11) and a divider (D) and passing a current through the cell whereby the onium compound is regenerated or produced; and recovering the onium compound from the cell.

Dans un mode de réalisation, l'invention concerne un procédé permettant de récupérer un composé onium dans des déchets en solution ou dans des solutions synthétiques contenant des impuretés et ce composé onium. Ce procédé consiste : à mettre ces déchets en solution ou ces solutions synthétiques en contact avec un décrassant d'ions métalliques afin d'éliminer les impuretés d'ions métalliques, ce décrassant d'ions métalliques comprenant au moins un composé de chélation et/ou une matière nanoporeuse et/ou une matière MACS; à charger ces déchets en solution ou ces solutions synthétiques dans une cellule électrochimique (10) contenant au moins deux compartiments (14, 15), une cathode (12), une anode (11) et un diviseur (D) et à faire passer un courant à travers la cellule afin de régénérer ou de produire le composé onium; enfin à récupérer le composé onium de la cellule.

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