The present development is a method for capturing and purifying CO.sub.2 from a flue gas stream using a metal aluminate nanowire absorbent and then regenerating the absorbent. After the CO.sub.2 is adsorbed into the absorbent, the adsorbent is regenerated by subjecting the CO.sub.2 saturated adsorbent to a dielectric barrier discharge plasma or to a microwave plasma or to a radio frequency (RF) plasma while ensuring that the external temperature does not exceed 200° C.

Described herein are compositions and methods for the storage and release of hydrogen gas using covalent organic frameworks (COFs). Advantageously, the compositions and methods described herein may be used for the facile and rapid release of hydrogen gas at near ambient temperatures. The described COFs allow for photoactivation, where the release of gas is initiated or the rate of release is increased with the COF is exposed to electromagnetic radiation, for example, UV light.

Poly(acrylic acid)-based superabsorbent polymer (SAP) in a feed stream is converted with UV irradiation into poly(acrylic acid) (PAA) in a flow system. The UV total energy used to convert SAP into PAA is less than about 50 MJ/kg SAP.

A composite comprises a carbonaceous and a metallic nanotube conjugated with a carbonaceous support. The composite may be used to remove contaminants from water.

Provided herein are methods of reducing bioburden of (e.g., sterilizing) a chromatography resin that include exposing a container including a composition including a chromatography resin and at least one antioxidant agent and/or chelator to a dose of gamma-irradiation sufficient to reduce the bioburden of the container and the chromatography resin, where the at least one antioxidant agent and/or chelator are present in an amount sufficient to ameliorate the loss of binding capacity of the chromatography resin after/upon exposure to the dose of gamma-irradiation. Also provided are reduced bioburden chromatography columns including the reduced bioburden chromatography resin, compositions including a chromatography resin and at least one chelator and/or antioxidant agent, methods of performing reduced bioburden column chromatography using one of these reduced bioburden chromatography columns, and integrated, closed, and continuous processes for reduced bioburden manufacturing of a purified recombinant protein.

An in situ system of filter rejuvenation has a fluid inlet on a first side of a reaction chamber, a fluid outlet disposed on a second side of the reaction chamber, a filtration chamber with a first wall comprising a ceramic glass material with a pass-band in the infrared spectrum. The filtration chamber is in fluid communication with the fluid inlet and the fluid outlet so that a fluid introduced into the inlet passes through the filtration chamber and exits through the fluid outlet. The system has at least one infrared heating element configured to transmit infrared energy within the pass-band of the ceramic glass material to heat the filter medium disposed within the filtration chamber to a temperature of at least 260° C., which can gasify contaminants without combustion.

Provided herein are methods of reducing bioburden of (e.g., sterilizing) a chromatography resin that include exposing a container including a composition including a chromatography resin and at least one antioxidant agent and/or chelator to a dose of gamma-irradiation sufficient to reduce the bioburden of the container and the chromatography resin, where the at least one antioxidant agent and/or chelator are present in an amount sufficient to ameliorate the loss of binding capacity of the chromatography resin after/upon exposure to the dose of gamma-irradiation. Also provided are reduced bioburden chromatography columns including the reduced bioburden chromatography resin, compositions including a chromatography resin and at least one chelator and/or antioxidant agent, methods of performing reduced bioburden column chromatography using one of these reduced bioburden chromatography columns, and integrated, closed, and continuous processes for reduced bioburden manufacturing of a purified recombinant protein.

A water treatment system includes an adsorption column including granular activated carbon (GAC) that adsorbs contaminants from untreated water onto the GAC, thereby producing treated water, a first electrode disposed at a proximal side of the adsorption column, with a gap between the first electrode and the GAC, a second electrode disposed at a distal side of the adsorption column, a drain outlet in fluid communication with the adsorption column for draining water out of the adsorption column, a gas inlet in fluid communication with the adsorption column for injecting a displacement gas into the adsorption column, a high voltage power supply electrically connected to one of the first electrode and the second electrode for generating a plasma discharge within the GAC, thereby regenerating the GAC within the adsorption column, and a gas outlet in fluid communication with the adsorption column for venting waste gas produced by the plasma discharge.

The present invention discloses a near-infrared regenerative intelligent fiber-based adsorptive material and a preparation method and use thereof. The material is obtained by chemically grafting a stepwise dual-temperature stimuli-responsive polyethyleneimine onto a carboxylated cellulose nanofiber matrix to prepare a stepwise dual-temperature stimuli-responsive intelligent nanofiber, and combining the stepwise dual-temperature stimuli-responsive intelligent nanofiber with a photosensitizer having near-infrared stimuli-response to prepare a stepwise dual-temperature/near-infrared stimuli-responsive intelligent nanofiber, and then by using a crosslinking agent to directly crosslink and combine the stepwise dual-temperature/near-infrared stimuli-responsive intelligent nanofiber with a hyperbranched polyamine in one step. The material has a stepwise dual-temperature/near-infrared stimuli-response, high density of amino group (greater than 14 mmol/g), and nano cavities.

An in situ system of filter rejuvenation can be applied to a mechanical filter passing fluid contaminated by chemical and particulate materials such that the filter removes the contaminants from the flow by trapping the contaminants in a filter medium. A non-combustive infrared heating system gasifies the trapped contaminants without combustion and without emissions to the atmosphere, restoring the efficacy of the filtration medium.