Editorial for the Special Issue "Gels for Removal and Adsorption (2nd Edition)".

An editorial focuses on the synthesis, properties, and applications of gel materials, particularly hydrogels and aerogels, in adsorption and removal technologies. It highlights advancements in the development of functional hydrogels for wastewater treatment, including methods to enhance their adsorption capabilities and mechanical properties. It also discusses the use of aerogels in gas purification, emphasizing their unique structural advantages.