أرسل هذا في رسالة قصيرة: Removal of Pb<sup>2+</sup> from aqueous solutions using K-type zeolite synthesized from coal fly ash

 _    _    __   __    _  _      ___     _____    
| \  / ||  \ \\/ //  | \| ||   / _ \\  |  __ \\  
|  \/  ||   \ ` //   |  ' ||  / //\ \\ | |  \ || 
| .  . ||    | ||    | .  || |  ___  ||| |__/ || 
|_|\/|_||    |_||    |_|\_|| |_||  |_|||_____//  
`-`  `-`     `-`'    `-` -`  `-`   `-`  -----`