Patent ID: 8313653
Filing Date: 2012-11-20
Classification: B01D,C02F,C22B,C25B,Y02P

Abstract:
1. A method of depleting iron from a geothermal brine solution comprising: (a) contacting the geothermal brine solution with an oxidizing agent, wherein said oxidizing agent oxidizes soluble iron in the solution to form an insoluble iron oxide precipitate; (b) removing the iron oxide precipitate from the solution to form an iron-depleted geothermal brine solution; and (c) contacting the iron-depleted geothermal brine solution with a QL reagent to create a reaction solution, wherein the QL reagent comprises a quaternary ammonium compound, a hydrogen ion exchange reagent and an organic solvent, wherein the reaction solution comprises an organic phase and an aqueous phase, and wherein the reaction solution is maintained at a temperature in the range of about 180° F. to about 230° F.