Yttria containing hybrid organic-inorganic sol-gels may be used in coatings for capillary microextraction, optionally hyphenated to online HPLC analysis. The sol-gel reaction mixture can use an yttrium trialkoxyalkoxide, such as yttrium trimethoxyethoxide, and a [bis(hydroxyalkyl)-amino-alkyl]-terminated polydialkyl/arylsiloxane, such as [bis(hydroxyethyl)-amine] (BHEA)-terminated polydimethylsiloxane, that can undergo hydrolysis and polycondensation, to form coating materials. Capillaries coated with such sol-gels can have improved extraction efficiency compared, e.g., to pure yttria-based coatings. The CME-HPLC can analyze water samples containing analytes of varied polarity, with excellent extraction of amides, phenols, alcohols, ketones, aldehydes, and polyaromatic hydrocarbons and detection limits ranging from 0.18 to 7.35 ng/mL (S/N=3). Such capillaries can exhibit solvent stability at pH 0 to 14, RSD % between 0.6 to 6.8% (n=3), at a preparative reproducibility RSD between 4.1 and 9.9%.

Embodiments describe a method of depositing an MOF, including depositing a metal solution onto a substrate, spinning the substrate sufficient to spread the metal solution, depositing an organic ligand solution onto the substrate and spinning the substrate sufficient to spread the organic ligand solution and form a MOF layer.

The present invention provides novel chromatographic materials, e.g., for chromatographic separations, processes for their preparation and separations devices containing the chromatographic materials. The preparation of the inorganic/organic hybrid materials of the invention wherein a surrounding material is condensed on a superficially porous hybrid core material will allow for families of different hybrid packing materials to be prepared from a single core hybrid material. Differences in hydrophobicity, ion-exchange capacity, chemical stability, surface charge or silanol activity of the surrounding material may be used for unique chromatographic separations of small molecules, carbohydrates, antibodies, whole proteins, peptides, and/or DNA.

A transportable modular system for enhanced minerals recovery from tailings lines and deposits, features two transportable mineral recovery modules (TMRM), each TMRM for transporting as a truck mounted module to a remote site as an independently-operable mineral recovery module, each TMRM to couple to another TMRM on-site at the remote site and used together to provide enhanced minerals recovery. One TMRM having a central engineered polymer mineral recovery module that receives tailings fluid having a mineral particle of interest, processes the tailings fluid using an engineered polymer configuration, and provides recovered mineral processing fluids having the mineral particle of interest and a tailings disposal fluid. One other TMRM is selected from a group of TMRMs that includes another central engineered polymer mineral recovery module, a tailings fluid management module, an additive/chemical treatment polymer management module, a tailings disposal module and a recovery mineral processing module.

The invention discloses a separation matrix comprising a plurality of multimodal ligands covalently coupled to a support, wherein said support is a membrane comprising nonwoven polymer fibers and wherein said ligands are capable of interacting with a target biomacromolecule. Further, the invention discloses separation methods using the separation matrix.

The present invention relates to a method for manufacturing a carbon dioxide absorbent and to the absorbent manufactured by the method. The method comprises: (A) a step of preparing a slurry composition including a carrier composition containing a support, an inorganic binder, and a solvent; (B) a step of preparing solid particles by spray drying the thus-prepared slurry composition; (C) a step of manufacturing a carrier by dry calcining the thus-prepared solid particles; and (D) a step of receiving an amine compound into the pores of the thus-manufactured carrier. According to the absorbent of the present invention, an absorbing reaction and a regenerating reaction at a low temperature range (less than or equal to 100° C. may be conducted, and therefore, the cost for capturing CO.sub.2 in a dry capturing process may be expected to decrease.

A method for preparing a core-shell structure polymer magnetic nanosphere with a high Cr (VI) adsorption capacity includes: adding Fe3O4 powder into a mixed solution of water and ethanol, dispersing Fe3O4 powder in the solution evenly by ultrasound, sequentially adding resorcinol and formaldehyde into the suspension to adjust a pH, stirring and reacting to obtain Fe3O4@RF evenly dispersed in a chitosan solution, dropwise adding the prepared suspension into a mixed solution of paraffin and span 80, stirring for a period of time, adding a glutaraldehyde aqueous solution, stirring and reacting to obtain a magnetic chitosan nanosphere. The magnetic chitosan nanosphere prepared may be applied to adsorbing Cr (VI) in a water solution. Not only the magnetic chitosan nanospheres prepared has a high adsorption capacity for Cr (VI), but also can be quickly separated by an external magnetic field after adsorption.

The present disclosure is directed to surface modified materials such as stationary phase materials for performing size exclusion chromatography. Aspects of the present disclosure feature materials surface modified with a moiety including a polyethylene glycol (PEG) functionality and a moiety comprising a diol functionality. Such surface modified materials exhibit a reduced propensity for ionic and hydrophobic secondary interactions.

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
O.sub.3/2SiQY
that is derived from an alkoxy-functional silane having the general formula
(RO).sub.3SiQX
and processes for preparing the crosslinked polymer that is chemically bonded to the surface of the siliceous substrate.

A solid phase for use in separation has been modified using an aqueous phase adsorption of a headgroup-modified lipid to generate analyte specific surfaces for use as a stationary phase in separations such as high performance liquid chromatography (HPLC) or solid phase extraction (SPE). The aliphatic moiety of the lipid adsorbs strongly to a hydrophobic solid surface, with the hydrophilic and active headgroups orienting themselves toward the more polar mobile phase, thus allowing for interactions with the desired solutes. The surface modification approach is generally applicable to a diversity of selective immobilization applications such as protein immobilization clinical diagnostics and preparative scale HPLC as demonstrated on capillary-channeled fibers, though the general methodology could be implemented on any hydrophobic solid support material.