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Activated Carbon Adsorption Meenakshi Goyal, Roop Chand Bansal
Publisher: CRC Press

Scottish physicist James Dewar extensively studied the gas absorption capacity of activated carbon. Adsorption capacity increased with increase in activation temperature but beyond 400 degrees celsius resulted in thermal decomposition. What can be removed and what can't? Activated carbon adsorption is an effective means for reducing organic chemicals, chlorine, lead, and unpleasant tastes and odours in effluent or coloured substances from gas or liquid streams. Activated carbon, also referred to as activated charcoal, is an amorphous form of carbon. The use of activated carbon in filtering mechanisms is an effective way of removing chlorine (and its by-products) as well as volatile organic compounds such as atrazine, benzene, radon, PCBs and toluene, along with many others. Walnut shells serve as an alternative source of Activated Carbon. Charcoal has the ability to adsorb contaminants, removing them from the water as the water flows past the charcoal (aDsorb means to stick to a surface in a thin layer as opposed to soaking in like aBsorb). Let's take a look at the science of activated carbon as a medium for adsorbing various types of chemicals and odors. When the activated carbon is removed, the chemicals are removed with it.