论文部分内容阅读
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.
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) 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 in a concentration of 50 vol% [bmim] HSO4in the aqueous solution without any oxidant. Of more than 99% of zinc and 82% of copper are leached by the addition of 50vol% H2O2to the [bmim] HSO4solution. Yet, the oxone does not show the promising oxidant behavior in leaching using [bmim] HSO.