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| Charcoal Filters [ http://ezinearticles.com/?Charcoal-Filters&id=227299 ] Charcoal Water Filters is basically made from the husk of coconut. One of the reasons that charcoal is worked with extensively as a water filter is because the charcoal water filter acts as an absorbent. The advantage in using charcoal is because the charcoal will absorb impurities, often toxic, when the water runs past the charcoal in the water filter. - [Read more] |
| Howstuffworks "What is activated charcoal and why is it used in filters? [ http://www.howstuffworks.com/question209.htm ] Activated charcoal is good at trapping other carbon-based impurities ("organic" chemicals), as well as things like chlorine. Many other chemicals are not attracted to carbon at all -- sodium, nitrates, etc. -- so they pass right through. This means that an activated charcoal filter will remove certain impurities while ignoring others. It also means that, once all of the bonding sites are filled, an activated charcoal filter stops working. At that point you must replace the filter. - [Read more] |