Thread Tools
Old 06-18-2003, 12:09 AM
Member
Join Date: Mar 2002
Location: KCMO
Posts: 11,126
Difference between activated charcoal and regular charcoal?

I understand that charcoal is used as fuel, whereas activated charcoal is used for filtering or adsorbing certain impurities or toxins.

What I haven't been able to find is a definition and/or description of activated charcoal, how it is made, and how it differs from everyday throw-it-on-the-grill charcoal.

I'm also curious about exactly what is meant by "activated."

Anyone know, or got a link? Thanks.
Old 06-18-2003, 12:34 AM
Guest
Join Date: Jan 2001
Location: Somers Point, NJ
Posts: 5,783
Made porous by exposure to steam.
Old 06-18-2003, 12:34 AM
Guest
Join Date: Jun 2001
Location: Los Angeles, CA
Posts: 232
http://ilpi.com/msds/ref/activatedcharcoal.html

Quote:
Charcoal becomes activated by heating it with steam to approximately 1000 oC in the absence of oxygen (O2). This treatment removes residual non-carbon elements and produces a porous internal microstructure having an extremely high surface area. A single gram of such material can have 400 to 1,200 square meters of surface area
Old 06-18-2003, 12:49 AM
Guest
Join Date: Jun 2000
Location: New York, NY
Posts: 3,475
Quote:
A single gram of such material can have 400 to 1,200 square meters of surface area.
Wow! This is a staggering fact if it is true.
Old 06-18-2003, 04:08 AM
Guest
Join Date: Dec 2001
Location: Sydney
Posts: 2,260
It is the high surface area that not only makes it a great adsorbent but also presents a risk of spontaneous heating and combustion.

Another way of putting the earlier posts is that it is clean carbon.

Also handy to have by for poisonings. I recall a story about some French fellah in the 1800's eating some rat poison then following it with activated charcoal and living. Dont try this at home kiddies.
Old 06-18-2003, 08:41 AM
Member
Join Date: Mar 2002
Location: KCMO
Posts: 11,126
Thanks to all. That answers my questions.
Old 06-18-2003, 09:06 AM
Guest
Join Date: May 2000
Posts: 1,396
Quote:
Originally posted by antechinus
Also handy to have by for poisonings. I recall a story about some French fellah in the 1800's eating some rat poison then following it with activated charcoal and living. Dont try this at home kiddies.

This same trick was used by the protagonist in Tim Powers' The Anubis Gates.


RR
Old 06-18-2003, 09:35 AM
Charter Member
Join Date: Dec 2000
Location: Connecticut, USA
Posts: 5,113
Quote:
Originally posted by stuyguy
Wow! This is a staggering fact if it is true.
It's true. I used activated carbon extensively for my master's thesis in environmental engineering.

Here's another cite:

http://cee.vt.edu/program_areas/...teristics.html

Quote:
Activated carbon is often characterized by its extremely large surface area. In fact, the surface area per gram of material can range from 500 to 1400 square meters, and values as high as 2500 m2/g have been reported.
(Of course, this quote would probably read better if they said that the surface area per gram of material typically ranges from 500 to 1400 square meters, and that values as high as 2500 m2/g have been reported.)
Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off

Forum Jump


All times are GMT -5. The time now is 10:58 PM.

Copyright © 2017
Best Topics: funny bet wagers represent the lbc fedex message board squeaky engine colette hiller corian countertop polish newspapers.com free century decade millennium proflowers track round bale price discworld elves digital camo ck2 easiest start purposely purposefully reflash bios mad men picnic svu reddit is drano safe cysts on penis don alverso tweezers obscure actors cyanide smell tzatziki sauce uses fig newton guy eyelids cut off vitiligo forum sheep castration teeth capellini angel hair swivel chair carpet sick day message factory jobs suck can otters be kept as pets how to extract iron from blood fuck them if they can't take a joke stop excel from auto formatting dates how long is homemade spaghetti sauce good for in the fridge how does superman's heat vision work can you break your own neck what can someone do with your bank account and routing number how to get silly putty out of your hair homegroup password incorrect windows 10 ways to die without pain what does nip mean how often seal driveway teeth cleaning for cats cost what soda to mix with whiskey why do i fart when i pee how long do dissolvable stitches last in dogs bernie sanders ethanol subsidies male female rock duets highest proof of alcohol why do spiders curl up when they die what is a bad eye prescription vinyl cove base home depot running from police on foot how long do peppers last after being cut faster faster you fool you fool rent a hotel room for 2 hours coffee in a tea bag what does an american accent sound like to others best bottled sweet and sour sauce puta in english google translate chloroform to knock someone out sodium chloride irrigation walgreens football referee hand thing amnesty international cancel monthly donation