Abstract: A composition of matter wherein the composition comprises a siliceous substrate having silanols on the surface and a polymer selected from the group consisting essentially of a water soluble polymer, a water soluble copolymer, an alcohol soluble polymer, an alcohol soluble copolymer, and combinations of such polymers, wherein the polymer is chemically bonded to the siliceous substrate by a silane linking material having the general formula O3/2SiQY that is derived from an alkoxy-functional silane having the general formula (RO)3SiQX and processes for preparing the crosslinked polymer that is chemically bonded to the surface of the siliceous substrate.

Abstract: An adsorbent for organic compounds consisting of filler granules, which contain 20 to 99.9 wt. % of fillers and a binder. The adsorbent is produced by mixing at least one binder with at least one filler and performing granulation in a mixing or granulation apparatus. The adsorbent may be used for adsorbing and/or absorbing organic and/or inorganic substances from a liquid or gaseous phase.

Abstract: Disclosed is a method of providing potable water that includes providing a filter, passing water through the filter, and removing bacteria and viruses from the water with the filter. The filter comprises a housing having an inlet and an outlet and a filter material disposed within the housing, the filter material formed at least in part from a plurality of filter particles consisting of mesoporous activated carbon. A sum of mesopore and macropore volumes of the filter particles may be between about 0.2 mL/g and about 2 mL/g, wherein mesopore means an intra-particle pore having a diameter between 2 nm and 50 nm, and macropore means an intra-particle pore having a diameter greater than 50 nm, a total pore volume of the filter particles is greater than about 0.4 mL/g and less than about 3 mL/g, and a ratio of the sum of the mesopore and macropore volumes to the total pore volume of the filter particles is greater than about 0.3.

Abstract: Disclosed is a method of providing potable water that includes providing a filter, passing water through the filter, and removing bacteria and viruses from the water with the filter. The filter comprises a housing having an inlet and an outlet and a filter material disposed within the housing, the filter material formed at least in part from a plurality of mesoporous wood activated carbon filter particles and particles selected from the group consisting of mesoporous wood activated carbon filter particles coated entirely with a cationic polymer, mesoporous wood activated carbon filter particles partially coated with a cationic polymer, and mixtures thereof. A sum of mesopore and macropore volumes of the filter particles may be between about 0.2 mL/g and about 2 mL/g, wherein mesopore means an intra-particle pore having a diameter between 2 nm and 50 nm, and macropore means an intra-particle pore having a diameter greater than 50 nm, a total pore volume of the filter particles is greater than about 0.

Abstract: Methods of producing macromolecular compositions and using same are provided. The method includes preparing a resin material; forming an acetyl group on the resin material; and oxidizing the acetyl group via a one-step reaction including reacting a sulfoxide and an acid with the acetyl group to form a ketoaldehyde group. The macromolecular compositions are capable of removing an effective amount of one or more constituents from a physiological solution, such as urea during dialysis therapy.

Abstract: Domoic acid is selectively bound by an adsorbent which comprises units derived from one or more halogenated carboxylic acids (preferably having an ?-trihalomethyl group) or derivatives thereof. The adsorbent may be a polymer, or a solid support onto which the carboxylic acid, derivative or polymer has been grafted. The preferenced acid is 2-trifluoromethyl acrylic acid. Domoic acid can be selectively bound from a mixture (e.g. seafood extract, seawater or urine) in the presence of potential interferents such as aminoacids, and recovered using an eluant comprising an organic acid.

Abstract: Multi-layered macromolecules wherein the layers are covalently bonded together and wherein the macromolecules are covalently bonded to solid particulate substrates, methods for the preparation of such compositions, and methods for their uses in a multitude of end use applications ranging from the purification of waste chemical and metal process streams to the separation and identification of proteins, peptides, and oligionucleotides.

Abstract: A process for removing DOC (dissolved organic carbon) from a concentrated salt solution containing DOC by contacting the salt solution with a coagulant/flocculant such that the DOC becomes insoluble and removing the insoluble DOC from the salt solution.

Abstract: A method of inserting into a non-polar fluid flow a quantity of a solid medium having porosity, preferably a crosslinked polystyrene resin, which absorbs or adsorbs oil oxidation by-products or other lubricant degradation products or varnish precursors dramatically to extend the life and performance of the lubricating oil.

Abstract: Described herein are compositions and methods useful for the purification of water using dendritic macromolecules. The process involves using dendritic macromolecules (dendrimers) to bind to contaminants, and a filtration step to produce water from which contaminants have been removed or modified. Examples of dendrimers that may be used in the process include cation-binding dendrimers, anion-binding dendrimers, organic compound-binding dendrimers, redox-active dendrimers, biological compound-binding dendrimers, catalytic dendrimers, biocidal dendrimers, viral-binding dendrimers, multi-functional dendrimers, and combinations thereof. The process is readily scalable and provides many options for customization.

Abstract: A method of extracting sparingly soluble organic contaminants from a water or gas stream is provided. Contaminants are removed from a contaminant stream by passing the stream through hydrophilic polyurethane or a composite comprising an open cell hydrophobic polyurethane foam having a plurality of surfaces defining a plurality of pores which have disposed thereon a coating of a substantially open cell hydrophilic polyurethane foam. The hydrophilic polyurethane or composite may then be regenerated when saturated with contaminant.

Abstract: A module enabling individual adaptation by the user to the respective task in the treatment of fluids using housings and connections of existing filtration devices without any modification is described. The module comprises one or more cells stacked one on top of the other, each of these having at least one opening, the opening of the cell or the similar openings of the cells together forming at least one channel for feeding or discharging the fluid to be treated. Each cell has two flat, porous components delimiting an inner space and designed for passage of the fluid therethrough, the inner space or spaces being connected to the channel. The inner space of the cell or cells contains at least partially a treatment material for the fluid. The method for manufacturing such a module makes provision for a treatment material to be introduced with a carrier fluid into the cells through the channel provided for feeding the fluid.

Abstract: The present invention relates to a method of separating antibodies from contaminants in a solution, which method comprises contacting the solution with a chromatography resin comprised of a support to which multi-modal ligands have been immobilised, wherein a multi-modal ligand comprises at least one cation-exchanging group and at least one aromatic or heteroaromatic ring system. In one embodiment, the ring-forming atoms of the aromatic or hereoaromatic entity are selected among C, S or O, and the cation exchanging group is a weak cation exchanger. The present method may be used as a single step procedure or as a polishing step following a capture on a Protein A column.

Abstract: A process for purifying a liquid from a dissolved solute includes the exposure of the liquid to a material absorbing the liquid in preference to the dissolved solute. The dissolved solute is adsorbed onto the material. Through exposure of the dissolved solute adsorbed on said material to output of an ionization source, solute release from the material occurs. Purification of the liquid to remove the dissolved solute occurs through the release of the liquid from said material separate from the release of the dissolved solute. A system for purifying a liquid from a dissolved solute includes a super absorbent polymer within a housing. A pH source is provided to released purified absorbed liquid portion A via a first outlet in the housing for collecting the released absorbed liquid portion A. An ionization source releases solute absorbed liquid portion B that is collected as a solute rich adsorbed liquid portion B.

Abstract: An insert for a storm water treatment system includes an elongated baffle member that is configured to be mounted within a substantially upright storm water drain basin so as to separate the interior space of the drain basin into a first compartment that communicates with an inlet opening of the drain basin and a second compartment that communicates with an outlet opening of the drain basin. A predetermined primary flow path is defined in the baffle number between the first and second compartments near a lower end of the baffle member. Treatment material is positioned, optionally in cartridge form, in a lower end of the second compartment so that storm water in the primary flow path will be directed through the treatment material in order to remediate possible contamination of the storm water. The system is designed in order to facilitate retrofitting of existing storm water drainage infrastructure and for original installation. A method of treating storm water is also disclosed.

Abstract: The invention relates to an adsorbent material, a method for cleaning blood and plasma and purifying albumin, and to a method for producing said adsorbent material. The inventive adsorbent material is embodied in the form of a highly cross-linked and porous spherical divinylbenzene copolymer which contains from 4 to 30 weight % of an imidazole derivative and at least 50 weight % of divinylvenzene incorporated by radical polymerization in the presence of air and/or oxygen. Said adsorbent material is embodied in such a way that it is biocompatible and suitable for removing free and albumin-bound toxic substances, drugs, pharmaceutical products, endogenic and exogenic toxins from blood, plasma, and external albumin circuits at a high rate and efficiency. The material is used in particular for adsorbing bilirubin and bile acids and is produced by suspension polymerization.

Abstract: A process for mitigating the pollution caused by a potential polluting agent comprises binding the potential polluting agent with a product obtained by calcining skeletal material and hydrating the calcined skeletal material.

Abstract: A sorbent comprising a spherical, highly porous polymer with specific hydrophobic-hydrophilic properties, specific pore volume and its distribution, as well as a method of solid phase extraction using said sorbent. The sorbent is produced by suspension polymerization of at least one hydrophilic monomer and at least one hydrophobic monomer, where the hydrophilic monomer comprises an imidazole moiety and the hydrophobic monomer is a mixture of isomeric divinylbenzene monomers and isomeric ethylvinylbenzene monomers. The sorbent has a pore diameter range from 5 ? to 1000 ?, an average pore diameter of 50 ? to 250 ?, and a pore volume from 1 ml/g to 2 ml/g comprising 15% to 25% micropores, 50% to 80% mesopores, and 5% to 30% macropores. Solid phase extraction columns and plates packed with the sorbent of this invention provide reliable high recoveries for a broad spectrum of analytes with various polarity, even if the sorbent is dried out multiple times during the extraction.

Abstract: The present invention relates to a polymer gel having a surfactant-like micelle structure obtained by polymerization or condensation polymerization of an ionic surfactant and an organic or inorganic compound having polymerizable moiety, which is capable of adsorbing and separating specific compounds in an easy recyclable manner.

Abstract: The invention pertains to the use of a granulate for the removal of liquid, gaseous and/or dissolved organic constituents from a process stream, said granulate consisting of dimensionally stable, porous synthetic particles with an extracting agent having a boiling point higher than 350° C. at 1 bar immobilized therein, characterized in that the granulate is obtainable by suspension polymerization of a monovinyl compound in the presence of a polyvinyl compound, with at least 50% wt. % of the monomer units having an aromatic structure and with the solvent for the monomers acting both as a non-solvent for the copolymer and as an extracting agent.

Abstract: A concentrating column useful for elemental analysis of trace metals consists mainly of column body, filtration membranes 6 fixed at the fluid inlet end and the outlet end of the column body, and column packing 8 packed inside the column body, wherein column packing 8 is prepared from the swollen and cleaned macroporous adsorbent resin of high, medium or non-polarity treated with a mixture of 3 mol/L NH4OH-1 mol/L HAC-3.0˜6.0×10?4 mol/L pyridin-(2-azo-4-)resorcin or a mixture of 0.5 mol/L Na2HPO4-1.0˜2.0×10?4 mol/L pyridin-(2-azo-4-)resorcin by dynamic on-column treatment or static immersion treatment. Two types of sample processing devices useful for elemental analysis of trace metals are provided with concentrating column employing the above-mentioned column packing.

Abstract: A pollutant containment system for containing the spillage of fuels or other hydrocarbons or the like comprises a first layer (14, 60), a containment vessel (16) for receiving liquid passing through the layer (14) and channelling means (22) for directing liquid permeating through the layer towards the containment vessel (16). The layer (14) provides a plurality of active surfaces for the retention of pollutant and is such as to cause water to permeate through the layer at a flow rate to avoid emulsification of oil and water. Water is introduced into and removed from the containment vessel to raise and lower the water surface thereby to cause the pollutant to be smeared over the active surfaces.

Abstract: Methods and a device for removing aldehydes from a waste stream are disclosed. In a preferred embodiment, the device provides for and the method uses a chemical or an aminated surface having primary amine functionality resulting from the amination of a support material such as silica.

Abstract: In order to reduce a total organic carbon (TOC) in ultrapure water to a level less than 1 ppb, several cycles of ozone contact/UV irradiation treatments are carried out in sequence. Preferably, the first cycle further includes an ion exchange treatment which is applied to the resulting UV irradiation water.

Abstract: A continuous Liquid-Solids Circulating Fluidized Bed (LSCFB) preferably for use as an ion exchanger consists of two fluidized bed columns, a fluidized bed adsorber (downer) operating in conventional fluidized bed mode for adsorption of ions of interest and a fluidized bed riser for desorption of ions (operating as a riser fluidized bed) to provide regenerated particles. Ion exchange particles circulate continuously between the riser and the downer i.e. the particles that have adsorbed ions in the absorber pass from the adsorber (downer) to the desorber where they are regenerated and the so regenerated particles are return to the adsorber near the top of the adsorber column. The LSCFB can be used in processes for continuous recovery of the ions of interest.

Abstract: A method of treating water containing a nitrogen compound, and an apparatus of treating water containing a nitrogen compound at high speed without using a biologically unstable treatment causing eutrophication in lakes and swamps. The waste water is introduced into an adsorbing tank that is filled with a zeolite, only nitrogen components are adsorbed by the zeolite, a solution containing hypochlorous acid or hypobromous acid is introduced into the adsorbing tank, and the nitrogen adsorbed in the zeolite is decomposed by the hypochlorous acid or the hypobromous acid.

Abstract: Provided are a preconditioned resin and methods of preparation thereof as well as methods for purifying hydrogen peroxide solutions. The method includes preconditioning an anion exchange resin, wherein an anion exchange resin bed is provided and carbon dioxide gas is passed through the resin bed.

Abstract: A novel filtration media employing polymeric absorbents comprising a material selected from the group consisting of styrene, pentadiene, cyclopentadiene, butylene, ethylene, isoprene, butadiene, propylene and mixtures thereof; and a filtration enabler intimately mixed with the polymeric absorbent. Upon contact with a hydrocarbon containing liquid, the liquid partially dissolves the polymeric absorbent forming a partial filtration barrier prior to the filtration media substantially absorbing the hydrocarbons, and allowing hydrocarbon-free liquid to flow through the filtration media. In situations of a leak or spill wherein an excess of hydrocarbons are present, the filtration media forms a plug to seal and prevent further discharge of the hydrocarbons. The filtration media may be placed inside a portable container for insertion into an existing drain such that hydrocarbon containing liquid is filtered through the device allowing hydrocarbon-free liquid to flow from the device.

Abstract: A process for separation and environmentally benign disposal of amine borane complexes includes adsorbing amine borane complex onto a solid support, treating the adsorbed amine borane complex with an oxidizing agent in situ on the adsorbent thereby forming decomposition products without the formation of hydrogen gas, and collecting the decomposition products for disposal thereof.

Abstract: There are provided an adsorbent which can effectively adsorb and remove endogenous cannabinoid in fluid, and a process for removing endogenous cannabinoid in fluid by means of the adsorbent. The adsorbent of endogenous cannabinoid comprising an adsorbent for endogenous cannabinoid comprising a water-insoluble material containing a substance whose solubility parameter &dgr; is at most 12 ((cal/cm3)1/2) is obtained. Endogenous cannabinoid in fluid can be effectively adsorbed and removed by contacting the adsorbent of endogenous cannabinoid with fluid containing endogenous cannabinoid.

Abstract: A method and product for removing at MTBE molecules from a solution, such as a contaminated aquifer, includes exposing the solution to a plurality of molecularly imprinted polymer beads (MIPS) that have receptor sites on the surfaces thereof that include imprints that match the physical shape of at least a portion of an MTBE molecule. A quantity of the MTBE molecules align with and adhere to some of the receptor sites and, accordingly, they are removed from the solution producing a remediated solution. According to one embodiment, the MIPS are contained in an enclosure having a plurality of openings large enough to permit the solution to pass through and small enough so as to prevent the MIPS from passing through. According to a preferred embodiment the MIPS are applied (i.e., coated) to the inside surface of a conduit and the solution is forced or allowed to flow through the conduit thereby removing some of the MTBE molecules therefrom.

Abstract: A two-stage filtration system is coupled with an oven, such as a solder reflow oven, to remove a vapor stream from the oven and to remove organic compounds that have volatilized from a solder flux and other contaminants from the vapor stream. The filtration system includes a first stage for trapping larger particles and a second stage including a packed bed of wettable media, such as steel balls, for trapping smaller particles and serving as a nucleation site for condensed organic compounds. The first stage can be a centrifugal self-cleaning element in the form of a mesh strainer coupled with a rotary motor for spinning the mesh strainer.

Abstract: This invention relates to methods of extracting and purifying bioactive substances from various plants and herbs. More specifically the invention relates to methods of extracting and separating bioactive substances from various plants and herbs, such as Kava root, Byrsonima species, Aesculus californica, Crataegus mexicana, Simmondsia chinensis, Pfaffia species, Alternanthera repens, Bursera species, Turnera species, Perezia species, Heimia salicifolia, Psidium species, Enterlobium species, Ptychopetalum olacoides, Liriosma ovata, and Chaunochiton kappleri, using supercritical fluid extraction and/or fluorocarbon solvent extract. The present invention further relates to separation of bioactive substances contained in extracts using packed column supercritical fluid chromatography or HPLC where dense gas with or without modifiers is the mobile phase.

Abstract: A process for manufacturing an adsorbent for reducing the concentration of fibrinogen and/or fibrin in blood or blood plasma in which a carrier material, which is preferably a copolymer derived from (meth)acrylates and or (meth)acrylic acid amides, is activated by amination, and subsequently undergoes thermal treatment at a temperature of over 100° C. An adsorber for the purpose of reducing the concentration of fibrinogen and/or fibrin in blood or blood plasma may be produced from the adsorbent.

Abstract: The invention relates to a process of removing fat from a mammalian body comprising the steps of: extracting blood from said mammalian body, said blood containing solubilised fat; extracting at least a portion of said solubilised fat from the blood; and returning the extracted blood to the mammalian body. The invention also relates to an apparatus for performing the process and a method of treating obesity with the process and apparatus.

Abstract: The present invention relates to water treatment, in particular to a process for the removal of dissolved organic carbon from water. The process includes the following steps, adding an ion-exchange resin to water containing a contaminant such as dissolved organic carbon, dispersing the resin in the contaminated water to enable adsorption of the dissolved organic carbon onto the resin, and separating the resin loaded with contaminant from the water. In a preferred embodiment the process employs a magnetic ion-exchange resin.

Abstract: A colloid comprises a sulfone polymer. The colloid may be used as a replacement for activated carbon or charcoal in water purification systems. Unlike activated carbon, the colloid is advantageously regenerated chemically and reused.

Abstract: An adsorbent for reducing the concentration of fibrinogen and/or fibrin in blood or blood plasma comprises a matrix and synthetic lateral chains that are covalently bonded to the matrix. The lateral synthetic chains are comprised of at least two amino groups in which the N2 atoms are at least 2.6 Å apart within at least one lateral synthetic chain. The matrix exhibits porous, unaggregated, spherical particles in a range of particle sizes from 50 to 250 &mgr;m, which possess an exclusionary threshold of at least 107 Daltons, and they exhibit no peptides or aromatic groups of any kind. The at least two amino groups are preferably separated from one another by 4 to 6 carbon atoms. An adsorber for the purpose of reducing the concentration of fibrinogen and/or fibrin in blood or blood plasma may be produced from the adsorbent.

Abstract: Superabsorbent polymers (SAPs) are used for the containment and treatment of wastewaters. SAPs are mixed with a wastewater in amounts sufficient to absorb substantially all of the wastewater and prevent it from leaving a defined containment area. The water can then be evaporated from the SAP to produce a substantially dry polymer composition containing the SAP and the wastewater contaminants. The dry polymer composition is discarded or, when appropriate, used as a fertilizer for plants. Surprisingly, the SAP reduces the odor associated with ammonia containing wastewaters by binding to the ammonia and reducing the ammonia gas present in the airspace around the wastewater. The evaporation process may be conducted in the presence of a heat exchanger to produce cool, fresh air that is used to cool facilities, particularly animal rearing and production facilities.

Abstract: This invention pertains to adsorption by an adsorbent of an adsorbate and to regeneration of the loaded adsorbent. The adsorption includes contacting an adsorbent selected from arylene-bridged polysilsesquioxanes and derivatives thereof with an adsorbate selected from aromatics and heterocyclics, particularly monocyclic heterocyclics containing carbon and nitrogen atoms in a 6-member non-aromatic ring, for a period of time sufficient to adsorb all or part of the adsorbate by the adsorbent. Regeneration of the loaded adsorbent includes removing all or part of adsorbate from the adsorbent by means of an alcohol wash or by thermal desorption of the adsorbent containing the adsorbate.

Abstract: The invention pertains to the use of a granulate for the removal of liquid, gaseous and/or dissolved organic constituents from a process stream, said granulate consisting of dimensionally stable, porous synthetic particles with an extracting agent having a boiling point higher than 350° C. at 1 bar immobilized therein, characterized in that the granulate is obtainable by suspension polymerization of a monovinyl compound in the presence of a polyvinyl compound, with at least 50% wt. % of the monomer units having an aromatic structure and with the solvent for the monomers acting both as a non-solvent for the copolymer and as an extracting agent.

Abstract: A process for removing a chlorinated methane impurity from a stream comprising a halogenated compound other than the chlorinated methane impurity, the process comprising contacting the stream with a polymer adsorbent to produce a purified product stream, the polymer adsorbent having a pore size distribution characterized by a higher cumulative porosity as a function of the log of pore diameter than that of activated carbon.

Abstract: This invention relates to a process for treating an effluent comprising a mixture of spent wash and black liquor, said process comprising mixing the effluent with a flocculating agent consisting of a mixture of salts of Group III and transition metals, mixture of natural earth's along with an oxide of alkaline earth metal followed by treating with a combination of ion exchange resins.

Abstract: The present invention provides a purification process whereby deferoxamine B produced by a microorganism and in mixture with other polyhydroxamates produced by the microorganism may be converted into its mesylate salt substantially free of the other polyhydroxamates and substantially free of chloride ion. The process includes adsorption and desorption of the deferoxamine B on an adsorption resin, direct precipitation of the deferoxamine free base out of the eluent from the adsorption resin, contacting of the deferoxamine B free base with methanesulfonic acid and isolation of the deferoxamine B mesylate salt by precipitation. This process minimizes decomposition of deferoxamine B.

Abstract: A method and product for removing at MTBE molecules from a solution, such as a contaminated aquifer, includes exposing the solution to a plurality of molecularly imprinted polymer beads (MIPS) that have receptor sites on the surfaces thereof that include imprints that match the physical shape of at least a portion of an MTBE molecule. A quantity of the MTBE molecules align with and adhere to some of the receptor sites and, accordingly, they are removed from the solution producing a remediated solution. According to one embodiment, the MIPS are contained in an enclosure having a plurality of openings large enough to permit the solution to pass through and small enough so as to prevent the MIPS from passing through. According to a preferred embodiment the MIPS are applied (i.e., coated) to the inside surface of a conduit and the solution is forced or allowed to flow through the conduit thereby removing some of the MTBE molecules therefrom.

Abstract: A method for improving the efficiency and usable life in a cross flow membrane filter used to remove contaminants from bilgewater. The bilgewater is passed upstream of the cross filter membrane through a fluid-pervious filtration media which has been infused with an absorbtion composition comprising a homogeneous thermal reaction product of an oil component selected from the group consisting of glycerides, fatty acids, alkenes, and alkynes, and a methacrylate or acrylate polymer component. The contaminants are thereby immobilized at the media. The purified output from the infused filtration media is then provided as input for the cross flow membrane filter.

Abstract: This invention provides a method for treating waste water containing organic bases such as tetramethyl ammonium hydroxide and dissolved metals such as Mo, W, Cu and Ni which are generated from mask cleaning and Mo etching processes. The organic base along with Cu and Ni is first removed preferably by passing the effluent through a cation exchange resin followed by passing the cation exchanged effluent through an anion exchange resin to remove the Mo and W metals. The treated waste water meets federal guidelines for dissolved metal contaminant limits for water discharge to water ways. Alternatively, filtered effluent is directly passed through an anion exchange resin to remove Mo and W and the dissolved TMAH and copper and nickel are removed by cation exchange.

Abstract: There is provided a process for removing hydrocarbons from hydrophilic solutions in which the adsorbent is regenerated in situ. A solution containing at least one hydrocarbon impurity is passed through a resin bed and the hydrocarbon is retained by the resin. The solution passes from the resin bed substantially reduced of hydrocarbons. The filtration bed containing the resin is regenerated in situ by passing a second liquid therethrough such that the hydrocarbon is removed in the second liquid stream and the resin is available for reuse.

Abstract: The present invention relates to methods for processing liquid waste solutions containing organic molecules such as organic chemical molecules and biological agents or materials. More specifically, the invention relates to the use of solid phase binders for the removal of organic molecules from liquid waste solutions.

Abstract: For separating non-conventional transmissible agents (NCTAs), i.e. causative agent(s), of transmissible spongiform encephalopathies (TSEs) from a solution of a protein susceptible to contamination with NCTAs, particularly from blood products, at least one adsorbent is suspended, for a time of at least 10 minutes. The absorbent is selected from kieselguhr, diatomaceous earth, silicic acid, clay minerals, metal hydroxide, metal oxihydrate, cellulose, perlite, bentonite, and water-insoluble synthetic polymers. The obtained suspension is agitated, and subsequently the adsorbent is separated from the protein solution.