Gas purification is the process of removing impurities and contaminants from gases to improve their quality and safety. This is essential in various industries, including petrochemicals, pharmaceuticals, and environmental protection, where clean gases are crucial for production and compliance with regulations. Techniques for gas purification include adsorption, absorption, and membrane separation. Each method targets specific contaminants, such as sulfur compounds or carbon dioxide, ensuring that the purified gas meets the required standards for its intended use. Effective gas purification helps reduce pollution and enhances the efficiency of industrial processes.