A system comprising a collocated thermal plant, water source, CO.sub.2 source and biomass growth module is disclosed. A method of improving the environment by utilizing the system is disclosed.

The present invention relates to a compressed natural gas combustion and exhaust system comprising: (i) a natural gas combustion engine; and (ii) an exhaust treatment system, the exhaust treatment system comprising a intake for receiving an exhaust gas from the combustion engine and a catalyst article arranged to receive and treat the exhaust gas, wherein the catalyst article comprises: a substrate having at least first and second coatings, the first coating being free from platinum-group-metals and comprising a copper-containing zeolite having the CHA framework-type and the second coating comprising a palladium-containing zeolite, wherein the first coating is arranged to contact the exhaust gas before the second coating. The present invention further relates to a method and a use.

A filter media can include a fiber coated with a barrier coating that is substantially non-reactive to reactive species, and a photocatalytic coating disposed on the barrier coating, wherein the photocatalytic coating generates reactive species in response to illumination with optical radiation.

A system includes an absorber having a vessel with a solvent inlet, a solvent outlet, a gas inlet, a gas outlet, and an interior volume configured to mix a gas and a solvent, wherein the absorber is configured to absorb an undesirable gas from the gas into the solvent. The system also includes at least one heat pipe coupled to the vessel, wherein the at least one heat pipe is configured to transfer heat away from at least one position along the absorber.

A wet-type electric dust collection device and low-concentration SO.sub.3 mist containing, in which the wet-type electric dust collection device has an electrical field formation part in which a plurality of discharge electrodes are provided on opposing surfaces of a first electrode and second electrodes for forming a DC electrical field. The discharge electrodes of the first electrode and the discharge electrodes of the second electrodes generate corona discharges that are reversed in polarity relative to each other. The gas containing the SO.sub.3 mist and the dust is guided to the electrical field formation part without electrically charging the SO.sub.3 mist and the dust or spraying a dielectric in the gas, and while the gas flows between the electrodes, the corona discharges impart electric charges of alternately reversed polarity to the SO.sub.3 mist and the dust. The first electrode and the second electrodes collect the charged SO.sub.3 mist and dust.

A fluid filtration system that includes one or more layers, including a trapping layer and a reactive layer, connected to a frame. A method for fluid filtration that includes sorbing contaminants, trapping contaminants, and degrading contaminants.

Some embodiments of the present disclosure relate to a device comprising a sorbent polymer composite and at least one phosphonium halide. In some embodiments, the device is configured to treat a flue gas stream. In some embodiments, the flue gas stream comprises oxygen, water vapor, at least one SOx compound, and mercury vapor. Some embodiments of the present disclosure relate to a method comprising treating the flue gas stream by: passing the flue gas stream over the device, reacting the oxygen and water vapor of the flue gas stream with the at least one SOx compound on the sorbent polymer composite, so as to form sulfuric acid, and reacting the mercury vapor with the at least one phosphonium halide, so as to fix molecules of the mercuiy vapor to the sorbent polymer composite.

Membranes, methods of making the membranes, and methods of using the membranes are described herein. The membrane can include a support layer, and a selective polymer layer disposed on the support layer. The selective polymer layer can include a selective polymer matrix (e.g., hydrophilic polymer, a cross-linking agent, an amino compound, a CO.sub.2-philic ether, or a combination thereof), and optionally graphene oxide dispersed within the selective polymer matrix. The membranes can be used to separate carbon dioxide from hydrogen. Also provided are methods of purifying syngas using the membranes described herein.

Provided herein are gas permeable membranes comprising an amine-containing selective layer on top of a gas permeable polymer support as well as methods of making and using thereof. The membranes are useful for the separation of CO.sub.2 from N.sub.2-containing gases.

The present invention relates to an apparatus for reducing greenhouse gas emission in a vessel, and a vessel including the same, which are capable of satisfying IMO greenhouse gas emission regulations by separating and discharging NO.sub.x, SO.sub.x, and CO.sub.2 from exhaust gas exhausted from a vessel engine and increasing CO.sub.2 solubility and CO.sub.2 removal efficiency by removing CO.sub.2 after removing SO.sub.x.