A column packing material for supercritical fluid chromatography which allows good peak shape to be obtained in the analysis of free fatty acids, etc. and in the analysis of agricultural chemicals, etc., and has excellent durability for repeated analysis. The column packing material for supercritical fluid chromatography includes polymer particles containing cross-linked polymer, the degree of swelling of which after absorbing tetrahydrofuran and the degree of swelling of which after absorbing methanol are both 1.4 or less.

A chromatography and synthesis column that includes a main tube, a plurality of lower media ports, and an internal groove. The internal groove is formed in an interior surface of the main tube and selectively provides an internal flow path between each of the internal lower media ports. This, in turn, facilitates quick and easy maintenance of the internal lower media ports and other components of the chromatography and synthesis column.

A system and method of applied radial technology chromatography using a plurality of beads is disclosed, with each bead comprising one or more pores therein having a diameter of about 250 Å to about 5000 Å, and each bead having an average radius between about 100 μm to about 250 μm. Also disclosed are processes for selecting beads for use in a radial flow chromatography column, and for purifying an unclarified feed stream using a radial flow chromatography column.

In accordance with one or more embodiments of the present disclosure, a process for treating a hydrocarbon feedstream having nitrogen-containing compounds and polynuclear aromatic compounds includes contacting the hydrocarbon feedstream with an adsorbent material; introducing the adsorbent-treated hydrocarbon feedstream to a hydrocracking reaction unit to produce a hydrocracked effluent stream; introducing a naphtha stream to a catalytic reforming unit to produce a reformate stream; introducing the reformate stream to an aromatic recovery complex to produce a light reformate stream, a BTX stream, and an aromatic bottoms stream; and introducing the aromatic bottoms stream to the used adsorbent to release at least a portion of the nitrogen-containing compounds and polynuclear compounds.

The invention provides methods for microbial bioburden reduction of various chromatography matrices, including bioburden reduction in the context of large-scale Protein A-based affinity chromatography columns.

The invention provides methods for microbial bioburden reduction of various chromatography matrices, including bioburden reduction in the context of large-scale Protein A-based affinity chromatography columns.

Disclosed herein are chromatography columns with conical or reducing inside dimensions and improved fits for use therewith, along with methods for making the columns and the frits.

A method for separating ionic species from an analyte solution to form a fractionated sample, the method comprising contacting the analyte solution with an ion-exchanger that is selectively permeable to ionic species of either a positive or negative charge, contacting an opposing side of the ion-exchanger with a draw solution, wherein the draw solution comprises adsorber particles dispersed in a liquid carrier, establishing a concentration gradient across the ion-exchanger to allow at least some ionic species from the analyte solution to permeate through the ion-exchanger to the draw solution, adsorbing ionic species that permeate from the analyte solution onto the adsorber particles, separating adsorber particles having the ionic species adsorbed thereto from at least part of the draw solution, and eluting the ionic species from the separated adsorber particles to form a fractionated analyte sample comprising eluted ionic species.

A method for recovering an acidic gas, includes: a step of bringing a gas to be treated that contains an acidic gas into gas-liquid into contact with an amine absorbing solution, allowing the amine absorbing solution to absorb the acidic gas, thereby removing the acidic gas from the gas to be treated; a step of allowing the amine absorbing solution that has absorbed the acidic gas to release the acidic gas, thereby regenerating the amine absorbing solution, and at the same time, recovering the released acidic gas; and an analysis step of calculating concentrations of iron ions and/or heavy metal ions in the amine absorbing solution.

Processes and systems for recovering metals from a lithium-ion battery waste stream include optionally conducting a leaching process to form a leachate stream, purifying the leachate stream in a first reactor to remove fluorine (F), phosphate (P), and one or more impurity metals selected from the group consisting of: copper (Cu), aluminum (Al), iron (Fe), and titanium (Ti), separating nickel (Ni), manganese (Mn), and cobalt (Co) from the purified filtrate liquid stream by passing the purified filtrate liquid stream into (i) a reactor for conducting a co-precipitation process by increasing pH or (ii) one or more chromatographic columns to generate an intermediate liquid stream comprising lithium (Li) and one or more recovered products comprising one or more of nickel (Ni), manganese (Mn), and cobalt (Co). The intermediate liquid stream can be introduced into a lithium precipitation reactor to precipitate at least one compound comprising lithium (Li).