The invention relates to a dialysis cell for sample preparation for a chemical analysis method, in particular for ion chromatography. The dialysis cell comprises a donor channel and an acceptor channel extending parallel thereto. The donor channel and the acceptor channel are separated from each other by a selectively permeable dialysis membrane. In particular, an analyte that is dissolved in a donor solution in the donor channel can enter through the dialysis membrane into the acceptor solution in the acceptor channel. The acceptor channel has at least in some sections a volume that is smaller than the volume of the donor channel extending parallel thereto. Acceptor and donor channels are formed from half-cells, between which the dialysis membrane is arranged, wherein the donor channel and the acceptor channel are designed in each case as a recess in a contact surface of one of the half-cells with the dialysis membrane.

A fiber bundle contactor may include a vessel including a first inlet; a second inlet; a mixing zone arranged in the vessel to receive a first fluid from the first inlet and a including fluid from the second inlet, wherein the mixing zone comprises a perforated plate assembly comprising a plate, a plurality of openings in the plate, and a plurality of riser pipes that extend from the plate and arranged to allow fluid flow through additional openings in the plate; and an extraction zone including a fiber bundle arranged in the vessel to receive the first fluid and the second fluid from the mixing zone.

An apparatus for extracting a material from a liquid includes a concentration stage having a tangential flow filter, a first path from the tangential flow filter, and a second path from the tangential flow filter. Under this configuration, the concentration stage accepts an initial liquid volume. A first liquid not having material collected by the tangential flow filter is passed along the first path, and concentrated liquid having material therein, which is entrapped by the filter, is directed to the second path. The apparatus also includes an aerosolizing stage coupled to the concentration stage that converts the concentrated liquid into an aerosol and a drying stage that dries the aerosol such that material extracted from the aerosol onto a material substrate.

An apparatus for extracting a material from a liquid includes a concentration stage having a tangential flow filter, a first path from the tangential flow filter, and a second path from the tangential flow filter. Under this configuration, the concentration stage accepts an initial liquid volume. A first liquid not having material collected by the tangential flow filter is passed along the first path, and concentrated liquid having material therein, which is entrapped by the filter, is directed to the second path. The apparatus also includes an aerosolizing stage coupled to the concentration stage that converts the concentrated liquid into an aerosol and a drying stage that dries the aerosol such that material extracted from the aerosol onto a material substrate.

Various embodiments disclosed relate to methods of separating volatile compounds from a liquid feed mixture comprising an emulsion. In various embodiments, the method includes contacting a first side of a first membrane with a liquid feed mixture including an emulsion having a polymer, and at least one volatile compound. The method can also include contacting a second side of the first membrane with a sweep medium including at least one a sweep fluid to produce a permeate mixture on the second side of the first membrane and a retentate mixture on the first side of the first membrane, wherein the permeate mixture is enriched in the volatile compound, and the retentate mixture is depleted in the volatile compound.

The invention provides a water-alcohol separation system and a method for water-alcohol separation for producing a high purity alcohol while achieving energy saving as the whole process. Namely, a water-alcohol separation system including plural separation membrane modules connected in series, a vacuum apparatus for reducing a pressure at a permeated side of each of the separation membrane modules, and a condenser for condensing a vapor that has passed through a membrane, in which plural independent vacuum systems reduce the pressure at the permeated side of the membrane of the separation membrane modules.

The method for purifying oses from hemicellulose originating from lignocellulosic biomass includes eliminating the cellulose matrix and the solid residues and/or the suspended materials from the acid hydrolysate containing oses in order to obtain a clarified hydrolysate, and subjecting the clarified hydrolysate, without adding any basic chemical reagent to increase the pH to at least one step of ultrafiltration and/or to at least one step of nanofiltration, so as to obtain a filtrate containing the majority of the pentoses and a retentate containing the species likely to precipitate under the effect of an increase in the pH. The filtrate is treated by at least one step of electrodialysis so as to recover the acid catalyst from an acid-supplemented solution, and obtain a deacidified filtrate.

The method for purifying oses from hemicellulose originating from lignocellulosic biomass includes eliminating the cellulose matrix and the solid residues and/or the suspended materials from the acid hydrolysate containing oses in order to obtain a clarified hydrolysate, and subjecting the clarified hydrolysate, without adding any basic chemical reagent to increase the pH to at least one step of ultrafiltration and/or to at least one step of nanofiltration, so as to obtain a filtrate containing the majority of the pentoses and a retentate containing the species likely to precipitate under the effect of an increase in the pH. The filtrate is treated by at least one step of electrodialysis so as to recover the acid catalyst from an acid-supplemented solution, and obtain a deacidified filtrate.

The present disclosure relates to methods and systems for the continuous production of recombinant proteins. In particular embodiments, the disclosure relates to methods and systems using capture chromatography, post-capture chromatography, virus filtration, and ultrafiltration/diafiltration for the continuous production of recombinant proteins.

This disclosure relates to an apparatus and method for analyzing an influence variable on membrane fouling of a seawater desalination system, wherein influence variables other than variables having a low degree of influence, among variables affecting the membrane, are selected, and the influence thereof on membrane fouling is used to derive an equation. The apparatus includes a variable storage unit configured to store variables affecting membrane fouling of a seawater desalination system, a dominant variable selection unit configured to select at least one dominant variable among the variables through at least one algorithm, and an equation derivation unit configured to derive a specific equation based on a correlation between the selected dominant variable and the membrane fouling.