The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 11, 2017
Filed:
Nov. 18, 2013
Battelle Memorial Institute, Columbus, OH (US);
Bruce F. Monzyk, Town Creek, AL (US);
F. Michael Von Fahnestock, Columbus, OH (US);
James K. Rose, Millersport, OH (US);
H. Nick Conkle, Columbus, OH (US);
Ming Wang, Emeryville, CA (US);
Satya P. Chauhan, Columbus, OH (US);
Ruey K. Bruce, Columbus, OH (US);
Tenisha Highsmith, Westerville, OH (US);
Winner Water Services, Inc., Sharon, PA (US);
Abstract
The invention provides an efficient method to purify an aqueous solution, typically mine drainage water, especially of anions and cations present in the aqueous solution as dissolved solids, the anions and cations are removed by treatment with a positively charged extractant having at least eight carbon atoms, whereby an unstable emulsion is formed; the unstable emulsion is allowed to break into an extract phase loaded with the anions and cations, and a water phase depleted in anions and cations; a floc inherently forms in the loaded extractant phase and then the loaded extractant phase and floc are separated from the purified water and treated to remove the anions and cations as concentrated useful products; the treated aqueous phase now reduced in anion and/or cation content is also separated from the emulsion as a purified aqueous solution. The extractant phase is preferably recycled. A continuous water purification process is provided.