Use of ionic liquid in leaching process of brass wastes for copper and zinc recovery
来源期刊：International Journal of Minerals Metallurgy and Materials2014年第2期
论文作者：Ayfer Kilicarslan Muhlis Nezihi Saridede Srecko Stopic Bernd Friedrich
文章页码：138 - 143
摘 要：Brass ash from the industrial brass manufacturer in Turkey was leached using the solutions of ionic liquid（IL）1-butyl-3-methyl-imidazolium hydrogen sulfate（[bmim]HSO4）at ambient pressure in the presence of hydrogen peroxide（H2O2）and potassium peroxymonosulfate（oxone）as the oxidants.Parameters affecting leaching efficiency,such as dissolution time,IL concentration,and oxidizing agent addition,were investigated.The results show that[bmim]HSO4is an efficient IL for the brass ash leaching,providing the dissolution efficiencies of 99%for Zn and 24.82%for Cu at a concentration of 50vol%[bmim]HSO4in the aqueous solution without any oxidant.However,more than 99%of zinc and82%of copper are leached by the addition of 50vol%H2O2to the[bmim]HSO4solution.Nevertheless,the oxone does not show the promising oxidant behavior in leaching using[bmim]HSO.
Ayfer Kilicarslan1，Muhlis Nezihi Saridede1，Srecko Stopic2，Bernd Friedrich2
1. Department of Metallurgical and Materials Engineering (Davutpasa Campus), Yildiz Technical University2. Department of Process Metallurgy and Metal Recycling (IME), RWTH Aachen University
摘 要：Brass ash from the industrial brass manufacturer in Turkey was leached using the solutions of ionic liquid（IL）1-butyl-3-methyl-imidazolium hydrogen sulfate（[bmim]HSO4）at ambient pressure in the presence of hydrogen peroxide（H2O2）and potassium peroxymonosulfate（oxone）as the oxidants.Parameters affecting leaching efficiency,such as dissolution time,IL concentration,and oxidizing agent addition,were investigated.The results show that[bmim]HSO4is an efficient IL for the brass ash leaching,providing the dissolution efficiencies of 99%for Zn and 24.82%for Cu at a concentration of 50vol%[bmim]HSO4in the aqueous solution without any oxidant.However,more than 99%of zinc and82%of copper are leached by the addition of 50vol%H2O2to the[bmim]HSO4solution.Nevertheless,the oxone does not show the promising oxidant behavior in leaching using[bmim]HSO.
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