MUMBAI, India, Nov. 2 -- Intellectual Property India has published a patent application (202617095914 A) filed by Universidade De Coimbra on August 07, 2026, for Process For The Recovery And Reuse Of Dyes From Aqueous Effluents.
Inventors include Santos Jorge, Alexandre Miguel; Brando Pereira, Jorge Fernando; and Brando Nogueira Alves, Mariana.
The application for the patent was published on October 30, 2026, under issue no. 44/2026.
Abstract: The present invention relates to a process for the recovery and reuse of dyes from aqueous effluents. The process comprises the formation of an alcohol/salt aqueous biphasic system by the addition of at least one short-alkyl chain alcohol, or at least one short-alkyl chain alcohol and a salt, to aqueous effluents, followed by the separation of the alcohol/salt aqueous biphasic system into an alcohol/dye-rich phase and a salt-rich phase. The alcohol/dye-rich phase can then be used in an alcohol- assisted dyeing process. The disclosed process can be carried out cyclically, with subsequent formation of an alcohol/salt aqueous biphasic system, followed by phase separation and use of the alcohol/dye-rich phase to dye different types of materials.
Disclaimer: Curated by HT Syndication.
