Cocalia
Violina Cocalia, Stamford, CT US
Patent application number | Description | Published |
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20090169447 | METHODS AND COMPOSITIONS FOR THE REMOVAL OF IMPURITIES AND WATER FROM THE BAYER PROCESS - A liquid phase that comprises an oxalate-extracting amount of an organic salt is useful as an extractant in a liquid/liquid extraction process for purifying Bayer process streams. | 07-02-2009 |
Violina Antoneta Cocalia, Stamford, CT US
Patent application number | Description | Published |
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20110005354 | PROCESSES FOR RECOVERING METALS FROM AQUEOUS SOLUTIONS - Provided herein are processes for recovering molybdenum and/or other value metals (e.g., uranium) present in aqueous solutions from a large range of concentrations: from ppm to grams per liter via a solvent extraction process by extracting the molybdenum and/or other value metal from the aqueous solution by contacting it with an organic phase solution containing a phosphinic acid, stripping the molybdenum and/or other value metal from the organic phase solution by contacting it with an aqueous phase strip solution containing an inorganic compound and having a ≦1.0 M concentration of free ammonia, and recovering the molybdenum and/or other value metal by separating it from the aqueous phase strip solution. When the molybdenum and/or other value metal are present only in low concentration, the processes can include an organic phase recycle step and/or an aqueous phase strip recycle step in order to concentrate the metal prior to recover. | 01-13-2011 |
Violina Antoneta Cocalia, Norwalk, CT US
Patent application number | Description | Published |
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20140127095 | PROCESSES FOR RECOVERING METALS FROM AQUEOUS SOLUTIONS - Provided herein are processes for recovering molybdenum and/or other value metals (e.g., uranium) present in aqueous solutions from a large range of concentrations: from ppm to grams per liter via a solvent extraction process by extracting the molybdenum and/or other value metal from the aqueous solution by contacting it with an organic phase solution containing a phosphinic acid, stripping the molybdenum and/or other value metal from the organic phase solution by contacting it with an aqueous phase strip solution containing an inorganic compound and having a ≦1.0 M concentration of free ammonia, and recovering the molybdenum and/or other value metal by separating it from the aqueous phase strip solution. When the molybdenum and/or other value metal are present only in low concentration, the processes can include an organic phase recycle step and/or an aqueous phase strip recycle step in order to concentrate the metal prior to recover. | 05-08-2014 |