Good Adsorption Granulated Water Purification Coal Based Activated
Activated carbon (AC) is a universal adsorbent. It is used to
purify the water we drink, the air we breathe, many of the foods we eat and numerous industrial chemicals that we use
every day. In drinking water treatment, AC is used to remove taste and odor, VOCs and a myriad of unwanted
organic materials. US EPA lists granular activated carbon (GAC) as a best available technology (BAT) to remove
specific organics from drinking water. In home water filtration devices, it is also used to remove disinfectants
such as chlorine and chloramines, as well as DBPs.
The three most common types of raw materials used to make AC are
coal, coconut shell and wood. Other types of raw materials are used to a much lesser extent, including fruit and
olive pits, nut shells, bamboo and rice hulls. The most common types of AC used for water treatment are coal-,
coconut- and wood-based. Activated carbon can be used in powdered form (PAC), in granular form (GAC) or in pellet
form, known as extruded activated carbon (EAC).
Powdered activated carbon is dosed into the water and then filtered
out. Granular activated carbon and, to a lesser extent, EAC, is used in fixed-bed-adsorber columns.
Application of granular activated carbon:
1. Purifying the poisonous gas;
2. Processing industrial waste gas;
3. Industrial and domestic water purification treatment;
4. Solvent recovery;
5. Purify and separate hydrogen, nitrogen, hydrogen chloride etc;
6.gas masks and respirators, to guard against poison.