Answers (1)
Charcoal is made by putting wood in a metal container with a lid and small vent holes. Heat the can until no more gas escapes from the vent holes. I have been told that grape stems make the best charcoal, but they did not explain why.
www.instructables.com/howto/charcoal/
Activated charcoal is made by passing steam through the charcoal for a few hours.
i wanted to know that from where can i buy it.....i mean in which shop
Here is a link to some more information that I found: www.instructables.com/id/How-to-refill-a-disposable-Brita-brand-water-pit/