concentrating HCl, activating charcoal

[bong]

SWIM is thinking about making a fume hood with a carbon filter as a part of the exhaust. However, a proper carbon filter is too expensive and too hard to find in this area.
He is thinking to make a filter with some activated charcoal as activated carbon. I am thinking if it is possible to activate the charcoal by washing the some barbecue charcoal with some concentrated HCl. I am thinking if the following is a possibility:
1. Since CaCl2 and HCl have the negatively charged atom, Cl-. Can I concentrate 35% HCl to higher concentration by putting some/ lots of CaCl2 in the HCl.
2. Soak the barbecure with the concentrated HCl to make activated charcoal.
Do I have to use concentraed acid to make activated charcoal? Is it possible to concentrate HCl with the above method?

Thanks to the people who answer my questions.

[12cheman12]

why dont you just buy some from a fish shop or something like that? its easy as anything to find and not suspicious at all.

[bong]

Concentrating HCl is it still possibele to concentrate HCl with CaCl2 is just out of my own interest.
SWIM's fume hood is going to be constantly 24 hours working with a fairly large air current. So I thought it would be a better idea for SWIM to activate some charcoal by himself. Plus, SWIM can get free charcoal from a charcoal manufacturer friend.

Thanks for the suggestion, cheman.

[lugh]

Why didn't you use fucking google before posting such a question  

http://www.atmospure.com/information/activated%20carbon%20and%20adsorption.htm

http://www.tifac.org.in/news/accarbon.htm

http://www.fao.org/docrep/X5555E/x5555e07.htm

http://home.att.net/~africantech/GhIE/ActCarbon.htm

There's no way the equipment needed to produce activated charcoal is going to cost you less than the price of buying it already made, unless you're going to use many kilotons monthly    On the other hand, if your charcoal manufacturer friend wants to invest in the equipment, then it's time to start doing some research instead of posting such questions expecting others to do it for you