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Gas membrane for biogas upgrading and CCUS

Biogas is a key renewable energy source that provides an alternative for the future. Upgrading biogas to biomethane, which can be fed into the public natural gas grid, offers additional potential.

Airrane provides solutions for air and gas fields using gas separation membrane technology. Since the Company founded in 2001, Airrane has been a leader in gas separation membrane manufacturing in Korea for over 20 years. Based on innovative corporate culture and continuous R&D efforts, we are expanding our participation in the global market through customized product design.

Airrane provides the market with a technology to separate gases such as carbon dioxide, methane, nitrogen, oxygen, hydrogen, and helium with high purity through self-developed gas separation membrane products. We aim to develop innovative solutions for Environment and Energy issues that world is facing and especially focus on carbon neutralization using membrane carbon capture technology.

Airrane has business with customers in various industries such as Oil & Gas, Energy, Biogas, Petrochemical, Electronics, Marine, Aircraft, Agriculture, and Logistics. As a technological innovation company, Airrane will become a company that provides solutions that meet the rapidly changing needs of customers.

Gas separation membranes are very fine hollow fibers through which different mixtures of gases are fed. As the gases travel through the tubes, a process called selective permeation (Diffusion-Sorption) allows us to separate gases using. At a closer look, gas separation membrane, the wall of each of these micro-thin hollow fibers, is an asymmetric filter made of various types of polymers. As different gases travel through the fiber, they come into contact with the membrane and permeate through it.

The permeation rate of each gas is determined by its solubility in the membrane material and its diffusion rate. Gases with higher solubility and smaller molecules (fast gases) can pass through the membrane faster than other less soluble gases with generally larger molecules (slow gases). Gases which permeate faster and more are collected outside of the hollow fiber as permeates while gases which do not permeate so well and stay inside of the fiber until they reach the other end are separated out as retentates. Depending on the properties of the desired gas, either or both of permeates and retentates can be used. For instance, if we want to separate methane from carbon dioxide for biogas upgrading, we feed biogas through membrane filter. Since carbon dioxide (CO2) permeates through the membrane much faster than the heavier methane (CH4), we get carbon dioxide concentrated out of the membrane fiber as permeate and methane staying inside the hollow fiber as retentate; methane is then collected at the end of the membrane.