Open AccessDevelopment of recovery technology of valuable metals from sea water
Author(s) -
J. San,
K. Onoe
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/778/1/012157
Subject(s) - seawater , crystallization , environmental science , desalination , process engineering , metal ions in aqueous solution , carbonate , aqueous solution , chemical engineering , biochemical engineering , materials science , metal , chemistry , membrane , metallurgy , geology , engineering , oceanography , biochemistry
From the viewpoint of resource recovery, the characteristics of seawater can be expressed as “a multicomponent aqueous solution with a wide range of concentration distribution”. In salt production and desalination processes, production rates of recovery target components are calculated according to needs, and separation engineering of components based on membrane separation and crystallization operations are developed cleverly. The purpose of this study is to apply for changes in needs of valuable metals expected in the future. In order to recover valuable resources from brines, applied technologies considering for environmental conservation should be required. In this paper, we set up bivalent metal ions of Mg 2+ , Ca 2+ , Ba 2+ and Sr 2+ as the components to be recovered from seawater, and the systematic recovery method of bivalent metal ions using isothermal reactive crystallization of carbonate is proposed.