The invention relates to a sorbent for removing metabolic waste products from a dialysis liquid, the sorbent comprising a soluble source of sodium ions. The sorbent comprises an ion exchange system which converts urea to ammonium ions and which is configured to exchange ammonium ions for predominantly hydrogen ions and to exchange Ca, Mg, and K for predominantly sodium ions. The soluble source of sodium ions overcomes an initial drop in sodium concentration in regenerated dialysate. When used in conjunction with an infusion system configured to utilise exchange of Ca, Mg and K for sodium during dialysate regeneration a desired sodium ion concentration can be maintained.

Disclosed herein is an electrolytic membrane with cationic ion or anionic ion conducting capability comprising crosslinked inorganic-organic hybrid electrolyte in a porous support, wherein the inorganic-organic hybrid crosslinked electrolyte is formed by chemical born formation between Linkers and Crosslinkers, wherein Linkers and/or Crosslinkers include at least one element from Si, P, N, Ti, Zr, Al, B, Ge, Mg, Sn, W, Zn, V, Nb, Pb or S.

Disclosed herein is an electrolytic membrane with cationic ion or anionic ion conducting capability comprising crosslinked inorganic-organic hybrid electrolyte in a porous support, wherein the inorganic-organic hybrid crosslinked electrolyte is formed by chemical born formation between Linkers and Crosslinkers, wherein Linkers and/or Crosslinkers include at least one element from Si, P, N, Ti, Zr, Al, B, Ge, Mg, Sn, W, Zn, V, Nb, Pb or S.

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.

A method for purifying a biologically active substance from a solution mixture containing impurities and the biologically active substance, in which an ion exchange chromatography carrier comprising a matrix and a copolymer containing at least N-isopropylacrylamide as a monomer unit and immobilized to a surface of the matrix is used, and the solution mixture is allowed to flow through a container storing the carrier at a uniform temperature, thereby recovering the biologically active substance.

A method for purifying a biologically active substance from a solution mixture containing impurities and the biologically active substance, in which an ion exchange chromatography carrier comprising a matrix and a copolymer containing at least N-isopropylacrylamide as a monomer unit and immobilized to a surface of the matrix is used, and the solution mixture is allowed to flow through a container storing the carrier at a uniform temperature, thereby recovering the biologically active substance.

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.

The present invention provides a mycotoxin adsorbent based on a highly specific betaine derivative for trichothecenes A and B, and especially for vomitoxin (or deoxynivalenol) and T-2 toxin; as well as a process for preparing said mycotoxin adsorbent. The mycotoxin adsorbent of the invention is obtained by modifying the surface of an aluminosilicate by means of an organic amphoteric compound with a carboxyl group that provides it with high polarity properties. The mycotoxin adsorbent is useful for preparing balanced feed from animals that avoid the toxic effects of mycotoxins.

The present invention provides a mycotoxin adsorbent based on a highly specific betaine derivative for trichothecenes A and B, and especially for vomitoxin (or deoxynivalenol) and T-2 toxin; as well as a process for preparing said mycotoxin adsorbent. The mycotoxin adsorbent of the invention is obtained by modifying the surface of an aluminosilicate by means of an organic amphoteric compound with a carboxyl group that provides it with high polarity properties. The mycotoxin adsorbent is useful for preparing balanced feed from animals that avoid the toxic effects of mycotoxins.

The invention relates to chromatographic separating materials having improved binding capacity for biological constituents in cell culture supernatants, or animal or human body fluids, in particular for monoclonal antibodies. The present invention likewise relates to the preparation of separating materials of this type, and to the use thereof, in particular for the removal of charged biopolymers from corresponding liquids.