Described herein are processes and apparatus for the high purity and high concentration recovery of multivalent products via continuous ion exchange from aqueous solutions for further down-stream purification.

Described herein are processes and apparatus for the high purity and high concentration recovery of multivalent products via continuous ion exchange from aqueous solutions for further down-stream purification.

The invention is a method of and system for removing bacteria and other contaminants in water by utilizing bentonite clay impregnated with metal ion, such as silver or copper ion. The method and system may alternatively or additionally include a cation exchange resin impregnated with metal ion, such as silver or copper ion.

Provided is a particulate composition comprising a collection of resin beads and LiX.2Al(OH).sub.3.nH.sub.2O, wherein n is 0 to 10, wherein X is a halogen, wherein the resin beads contain polymer having 0.5 to 3 equivalents of amine pendant groups per liter of the particulate composition, wherein the resin beads have average pore diameter of 5 to 100 nm, wherein the collection of resin beads has harmonic mean particle diameter of 200-1000 micrometers; wherein the collection of resin beads has surface area of 20 to 150 m.sup.2/g; and wherein aluminum is present in an amount of 14.5% percent or higher, by weight of aluminum atoms based on the total weight of the particulate composition.

Also provided is a method of removing lithium from brine using such a composition.

Provided is an anion exchange composition comprising (a) polymeric beads having covalently bound amine groups, and (b) tin(II) oxide.

Provided is an anion exchange composition comprising (a) polymeric beads having covalently bound amine groups, and (b) tin(II) oxide.

Disclosed herein are systems, methods, processes, and apparatuses for treating radioactive waste, through systems designed to bind and dry radioactive media. In some of its various embodiments, the system includes at least one helical screw designed to receive and mix liquid wastes with ion exchange media, as well as convey the resulting slurry through one or more of a binding, dewatering, and drying/off-gassing region.

The present invention relates to the extraction of lithium from liquid resources such as natural and synthetic brines, leachate solutions from clays and minerals, and recycled products.

Provided is a method of cleaning a collection of resin beads, wherein the method comprises bringing the collection of resin beads into contact with an aqueous solution, wherein the aqueous solution comprises one or more dissolved amine compounds, wherein the collection of resin beads comprises polymer that comprises attached carboxylic acid groups or sulfonic acid groups or a mixture thereof.

The invention relates to ion exchangers laden with transition metal hexacyanoferrate complexes, to processes for the production thereof and to the use of these ion exchangers for removal and purification of cesium ions.