Abstract: Proposed is a single-atom catalyst (SAC) including a nitrogen-doped carbon structure and a single-atom metal, wherein the single-atom metal forms a coordination bond with a nitrogen atom of the nitrogen-doped carbon structure. When using an electrochemical cell having a pair of electrodes including the single-atom catalyst in an electrochemical advanced oxidation process (EAOP) for water treatment, organic contaminants in wastewater are efficiently degradable under mild pH conditions.

Abstract: The present disclosure relates to a process and apparatus for capturing carbon dioxide in flue gas, and the present disclosure performs a carbon dioxide recovery separation membrane process using cold heat in a carbon dioxide liquefaction process through a separation tower, thereby reducing energy consumption and remarkably improving separation efficiency.

Abstract: A gas capture system includes a first heat exchanger that exchanges heat between cold heat of a fuel that is vaporizing and a first gas mixture to cool the first gas mixture, a first dehumidifier that dehumidifies the first gas mixture cooled through the first heat exchanger, a first compressor that presses the first gas mixture passing through the first dehumidifier, a first separation device that separates a second gas mixture including a reference gas from the pressed first gas mixture, and a liquefier that liquefies the reference gas to generate a reference liquid.

Abstract: Disclosed herein is a gas separation membrane for a DEM production process, including: a porous support having a carbon dioxide permeability of more than 300 GPU (GPU=1×10?6 cm3/cm2·sec·cmHg) and an inner diameter of 100˜1000 ?m; and a composite membrane provided on an inner or outer surface of the porous support and coated with a separating material having a permeation selectivity of carbon dioxide/hydrogen of 4 or more. The gas separation membrane is advantageous in that it can improve efficiency of the separation process by selectively separating and removing carbon dioxide from a gas mixture of carbon dioxide and hydrogen produced during a process of producing DME which is a next-generation clean fuel.