Utilization of rice husk and waste aluminum cans for the synthesis of some nanosized zeolite, zeolite/zeolite, and geopolymer/zeolite products for the efficient removal of Co(II), Cu(II), and Zn(II) ions from aqueous media

• Ehab A. AbdelrahmanBenha University
• Yasmeen Gaber Abou El-ReashMansoura University
• Hany M. YoussefPrince Sattam Bin Abdulaziz University
• Yousra H. KotpDesert Research Center
• Raed M. HegazeyEgyptian Petroleum Research Institute