The present invention relates to a flow-through device comprising at least one separation column wherein a first packing component, which comprises particles of alumina and/or silica, and a second packing component, which comprises a powder of one or more hygroscopic salts are provided. The two packing components may be blended or layered in the device, which may comprise a single tube or a plurality of tubes arranged in a plate format, such as the wells of a multiwall plate or tubes in a rack. In addition, the invention relates to a method for removing one or more matrix components, such as pigments, from a biological sample, by passing said sample across a first packing component, which comprises particles of alumina and/or silica, and a second packing component, which comprises a powder of one or more hygroscopic salts.

A continuous chromatography system includes a plurality of treatment columns, each column of the plurality of columns including an adsorbent. The system further includes a valve system configured to operate the plurality of columns as a simulated moving bed system. The valve system includes a first valve configuration having an injection of a brine into a first column of the plurality of columns and an extraction of an eluate from a second column of the plurality of columns. The second column being a different column than the first column. The valve system further includes a second valve configuration comprising a recirculation of fluid through the plurality of columns.

A continuous chromatography system includes a plurality of treatment columns, each column of the plurality of columns including an adsorbent. The system further includes a valve system configured to operate the plurality of columns as a simulated moving bed system. The valve system includes a first valve configuration having an injection of a brine into a first column of the plurality of columns and an extraction of an eluate from a second column of the plurality of columns. The second column being a different column than the first column. The valve system further includes a second valve configuration comprising a recirculation of fluid through the plurality of columns.

A new adsorbent CO.sub.2-ONE for removal of acidic gases such as carbon dioxide and hydrogen sulfide was developed from hydrothermal reaction of natural limestone with natural kaolin via sodium hydroxide. Several synthesis conditions were employed such as initial concentration of NaOH, weight ratio of limestone to kaolin, reaction temperature and pressure. The produced CaNaSiO2Al2O3 samples were characterized using XRD and EDS and showed that a mixture of Gehlenite Ca.sub.2Al(A.sub.1.22Si.sub.0.78O.sub.6.78)OH.sub.0.22 and Stilbite Na.sub.5.76Ca.sub.4.96(Al.sub.15.68Si.sub.56.32O.sub.144) with percentage of 43 and 57 was successfully produced, respectively. Another produced sample showed the presence of Gehlenite Ca.sub.2Al(Al.sub.1.22Si.sub.0.78O.sub.6.78)OH.sub.0.22, Stilbite Na.sub.5.76Ca.sub.4.96(Al.sub.15.68Si.sub.56.32O.sub.144) and Lawsonite CaAl.sub.2Si.sub.2O.sub.7OH.sub.2(H.sub.2O) with percentage of 4.1 and 7.4 and 88, respectively.

A new adsorbent CO.sub.2-ONE for removal of acidic gases such as carbon dioxide and hydrogen sulfide was developed from hydrothermal reaction of natural limestone with natural kaolin via sodium hydroxide. Several synthesis conditions were employed such as initial concentration of NaOH, weight ratio of limestone to kaolin, reaction temperature and pressure. The produced CaNaSiO2Al2O3 samples were characterized using XRD and EDS and showed that a mixture of Gehlenite Ca.sub.2Al(Al.sub.1.22Si.sub.0.78O.sub.6.78)OH.sub.0.22 and Stilbite Na.sub.5.76Ca.sub.4.96(Al.sub.15.68Si.sub.56.32O.sub.144) with percentage of 43 and 57 was successfully produced, respectively. Another produced sample showed the presence of Gehlenite Ca.sub.2Al(Al.sub.1.22Si.sub.0.78O.sub.6.78)OH.sub.0.22, Stilbite Na.sub.5.76Ca.sub.4.96(Al.sub.15.68Si.sub.56.32O.sub.144) and Lawsonite CaAl.sub.2Si.sub.2O.sub.7OH.sub.2(H.sub.2O) with percentage of 4.1 and 7.4 and 88, respectively.

This invention employs solid phase extraction media and column methods to apply external and internal standards and compounds. Analytical standard or compounds including PFAS are adsorbed to a solid phase extraction media and are stored indefinitely. The standards or compounds remain stable on the solid phase extraction media without decomposing. The standards or compounds may be removed from the solid phase extraction media with an elution solvent or reagent.

This invention employs solid phase extraction media and column methods to apply external and internal standards and compounds. Analytical standard or compounds including PFAS are adsorbed to a solid phase extraction media and are stored indefinitely. The standards or compounds remain stable on the solid phase extraction media without decomposing. The standards or compounds may be removed from the solid phase extraction media with an elution solvent or reagent.

A new adsorbent CO.sub.2-ONE for removal of acidic gases such as carbon dioxide and hydrogen sulfide was developed from hydrothermal reaction of natural limestone with natural kaolin via sodium hydroxide. Several synthesis conditions were employed such as initial concentration of NaOH, weight ratio of limestone to kaolin, reaction temperature and pressure. The produced CaNaSiO.sub.2Al.sub.2O.sub.3 samples were characterized using XRD and EDS and showed that a mixture of Gehlenite Ca.sub.2Al(A.sub.1.22Si.sub.0.78O.sub.6.78)OH.sub.0.22 and Stilbite Na.sub.5.76Ca.sub.4.96(Al.sub.15.68Si.sub.56.32O.sub.144) with percentage of 43 and 57 was successfully produced, respectively. Another produced sample showed the presence of Gehlenite Ca.sub.2Al(Al.sub.1.22Si.sub.0.78O.sub.6.78)OH.sub.0.22, Stilbite Na.sub.5.76Ca.sub.4.96(Al.sub.15.68Si.sub.56.32O.sub.144) and Lawsonite CaAl.sub.2Si.sub.2O.sub.7OH.sub.2(H.sub.2O) with percentage of 4.1 and 7.4 and 88, respectively.

A new adsorbent CO.sub.2-ONE for removal of acidic gases such as carbon dioxide and hydrogen sulfide was developed from hydrothermal reaction of natural limestone with natural kaolin via sodium hydroxide. Several synthesis conditions were employed such as initial concentration of NaOH, weight ratio of limestone to kaolin, reaction temperature and pressure. The produced CaNa-SiO2-Al2O3 samples were characterized using XRD and EDS and showed that a mixture of Gehlenite Ca.sub.2Al(Al.sub.1.22Si.sub.0.78O.sub.6.78)OH.sub.0.22 and Stilbite Na.sub.5.76Ca.sub.4.96(Al.sub.15.68Si.sub.56.32O.sub.144) with percentage of 43 and 57 was successfully produced, respectively. Another produced sample showed the presence of Gehlenite Ca.sub.2Al(Al.sub.1.22Si.sub.0.78O.sub.6.78)OH.sub.0.22, Stilbite Na.sub.5.76Ca.sub.4.96(Al.sub.15.68Si.sub.56.32O.sub.144) and Lawsonite CaAl.sub.2Si.sub.2O.sub.7OH.sub.2(H.sub.2O) with percentage of 4.1 and 7.4 and 88, respectively.

The present disclosure relates to the recovery of an alkoxide catalyst used in a process depolymerizing a polyester to form a diacid or diester and a diol. The present disclosure also relates to the recovery of an alkoxide catalyst used in a process depolymerizing polyethylene terephthalate to form dimethyl terephthalate and mono ethylene glycol.