MUMBAI, India, Feb. 27 -- Intellectual Property India has published a patent application (202641017893 A) filed by Dr. S. Sudhaparimala; Kowsalya. S; and Ethiraj College For Women, Chennai, Tamil Nadu, on Feb. 17, for 'a method for recovery and recycling of copper and aluminium from e-waste printed circuit boards.'
Inventor(s) include Dr. S. Sudhaparimala; and Kowsalya. S.
The application for the patent was published on Feb. 27, under issue no. 09/2026.
According to the abstract released by the Intellectual Property India: "The present invention relates to a method for recovery and recycling of metals from e-waste printed circuit boards (100). The method comprises physical separation(104) of copper(106)-containing components and aluminium(108)-containing components, followed by nitric acid leaching (110) of the copper-containing components in a closed reaction vessel to obtain a copper-rich leachate(116). Nitrogen oxide fumes generated during leaching are captured to recover dilute nitric acid(114). The copper-rich leachate is converted into copper sulphate pentahydrate(122) through sulphate conversion (118) and controlled crystallization(120). The aluminium (108)-containing components are subjected to alkaline leaching (124) followed by sulphate precipitation and crystallization (126) to obtain potassium aluminium sulphate (130). At least a portion of the copper sulphate pentahydrate (122) is converted into copper oxide nanoparticles (122a) using a plant-mediated reduction route."
Disclaimer: Curated by HT Syndication.
