A waste gas scrubber includes a reaction chamber configured to decompose waste gas, at least one heater configured to heat the waste gas flowing into the reaction chamber, a fine powder separation device configured to emit compressed air, and a monolith catalyst including a catalyst support, a plurality of catalyst inner cells, and at least one catalyst material, the catalyst support in the reaction chamber and configured to support the plurality of catalyst inner cells, and the at least one catalyst material configured to cause a chemical reaction with the heated waste gas, the catalyst support including a first surface at which a first end of each of the plurality of catalyst inner cells is exposed, and a second surface at which a second end of each of the plurality of catalyst inner cells is exposed.

Provided are a method for producing a purified gas, which, when a valuable material is generated from a waste-derived raw material gas, can efficiently remove a phase transitioning impurity contained in the raw material gas, a method for producing a valuable material, a gas purification apparatus, and an apparatus for producing a valuable material. A method for producing a purified gas, comprising removing an impurity in a waste-derived raw material gas, the method comprising: a solid-phased impurity removing step S11 of passing the raw material gas through a phase transitioning impurity removing unit to remove a solid-phased phase transitioning impurity in the raw material gas; and an impurity removing step S12 of passing the raw material gas after the solid-phased impurity removing step through a pressure swing adsorption apparatus combined with a vacuum pump to remove an impurity in the raw material gas.

Systems for and methods of treating a fluid containing siloxanes, silanols, silanes, and/or other silicon compounds. A hot box receives an initial flow of the fluid, and reacts the initial flow with water at a temperature and pressure suitable for hydrolysis to generate a first treated flow, in which at least a portion of the siloxane is hydrolyzed to produce silicon dioxide and methane. A catalytic reactor receives the first treated flow, and converts at least a portion of volatile organic compounds (VOCs) and dioxygen to carbon dioxide and water to generate a second treated flow. A membrane separator receives the second treated flow, and removes at least a portion of the carbon dioxide and water to generate a clean gas flow.

Aspects of the present disclosure include a filtration system. The filtration system includes a mask and a hybrid filter for use with an activated carbon-based filter and attachable to the mask. The mask may include an interface around a periphery of the mask for sealing engagement with a skin surface of a user. The hybrid filter may include a chamber configured to receive the activated carbon-based, an electro-ionic filter, and a Faraday cage. The electro-ionic filter is in series with the material-based filtration element and includes a plurality of electrodes arranged in series with each other. The electrodes of the plurality of electrodes are evenly spaced apart from each other in an alternating positive-polarity negative-polarity sequence. The Faraday cage surrounds at least the electro-ionic filter.

A metal organic framework (MOF)-polymer composite for detoxifying a chemical warfare agent (CWA) comprises MOF nanoparticles having catalytically active Lewis acid sites and at least one polymer having catalytically active basic sites. The composite is configured such that the at least one polymer is in surrounding relation to the MOF nanoparticles such that at least a portion of the Lewis acid sites of the MOF nanoparticles are in proximal relation to at least a portion of the basic sites of the at least one polymer thereby forming a plurality of proximal acid-base interfaces thus enabling a bifunctional catalytic mechanism for detoxifying the CWA. The MOF-polymer composite can provide CWA detoxification without the presence of a basic compound.

A system for processing biogas, the system comprising: a container, a pressure swing adsorption (PSA) unit housed in the container, the PSA unit having: a plurality of beds containing adsorbent material, the adsorbent material configured to selectively adsorb gas species from the biogas to process the biogas, a rotary valve module for distributing flow of 5 the biogas within the PSA unit, an inlet for supplying the biogas to the plurality of beds from outside of the container, and an outlet for transporting the processed biogas away from the PSA unit.