Presentation Information
[PE1-036]Facile and efficient removal of metal anions using a amino function group assited precipitation for recycling high-purity rare metal
○Takashi Ogi1, Takahiko Makino2, Hayato Horiuchi1, Kikuo Okuyama1 (1. Depertment of Chemical Engineering, Fuculty of Engineering, Hiroshima University, 2. Cutting Tool R&D Division, Kyocera Corporation)
Keywords:
sustainable recycling technique,Adsorption,Precipitation,Polyoxometalate,Recovery of rare metal
We present a facile method for tungsten ion removal using lysine for the development of an environmentally friendly and sustainable recycling technique. Lysine addition to the tungsten solution achieved 100% tungsten removal within 5 min, as a white lysine–tungsten precipitate. Calcination of the lysine–tungsten precipitate produced tungsten oxide powder of high purity (99.6%) because the lysine is completely decomposed. This facile and useful metal removal method can be used for polyoxometalates of other metals such as molybdenum, tantalum, and niobium.