Physics education research, electronic materials, and the musings of Christopher Moore, Ph.D.

hello sir,
I am a second year engineering student. I am doing a project on ion bombardment separation. My aim is to separate glass, paper, cloth etc.. using ion bombardment technique. At implementation level I have quite a few doubts. can you please help me in knowing the following facts.
1. for a fed of approx. 500gms what radius of drum roll should be used?
2. What voltage is optimum for a miniature version of ion bombardment unit?
I have to submit the abstract before jan 31st. Hoping a soon reply from you.
Thanks in advance.