Coal Based Activated Carbon for Air Purification and Water Purification

Activated Carbon:
1:strong adsorption capacity
2:for purifying of poisonous gas and wastewater
3:rich experience in exporting
Coal based Activated Carbon:
A
ctivated carbon
, also called
activated charcoal
or
activated coal
is a form of carbon that has been processed to make it extremely porous and thus to have a very large surface area available for adsorption or chemical reactions.
Activated carbon is carbon produced from carbonaceous source materials like nutshells, peat, wood, coir, lignite, coal and petroleum pitch. It can be produced by one of the following processes:
Physical reactivation
: The precursor is developed into activated carbons using gases. This is generally done by using one or a combination of the following processes:
Carbonization
: Material with carbon content is pyrolyzed at temperatures in the range 600-900 °C, in absence of oxygen (usually in inert atmosphere with gases like argon or nitrogen)
Activation/Oxidation
: Raw material or carbonized material is exposed to oxidizing atmospheres (carbon monoxide, oxygen, or steam) at temperatures above 250 °C, usually in the temperature range of 600–1200 °C.
Chemical activation
: Prior to carbonization, the raw material is impregnated with certain chemicals. The chemical is typically an acid, strong base, or a salt (phosphoric acid, potassium hydroxide, sodium hydroxide, zinc chloride, respectively). Then, the raw material is carbonized at lower temperatures (450–900 °C). It is believed that the carbonization / activation step proceeds simultaneously with the chemical activation. Chemical activation is preferred over physical activation owing to the lower temperatures and shorter time needed for activating material.
. Classification :Powdered activated carbon (PAC) Granular activated carbon (GAC) Extruded activated carbon(EAC) impregnated carbon.polymer coated carbon.
Application:
Activated carbon is used in gas purification, gold purification, metal extraction, water purification, medicine, sewage treatment, air filters in gas masks and respirators, filters in compressed air and many other applications.
One major industrial application involves use of activated carbon in the metal finishing field. It is very widely employed for purification of electroplating solutions. A variety of organic chemicals are added to plating solutions for improving their deposit qualities and for enhancing properties like brightness, smoothness, ductility, etc. Due to passage of direct current and electrolytic reactions of anodic oxidation and cathodic reduction, organic additives generate unwanted break down products in solution.

specifications :

Analysis project
test data
Analysis project
test data
Iodine adsorptive value
>800mg/g
strength
>90%
specific surface

>850m2/g
MB(methylene blue number )
120-200mg/g
pack density
0.45-0.75g/cm3
Residual chlorine a adsorption rate
>85%
Mesh size
various size
PH
5--12