Activated Carbon
Activated Carbon is a form of carbon that is activated by a carefully controlled oxidation process to develop a porous carbon structure. The imperfect structure results in a high degree of porosity and over a broad range of pore sizes, from visible cracks and crevices to gaps and voids of molecular dimensions. The specified structure of carbon gives it a very large surface area which allows the carbon to adsorb a wide range of compounds.
Activated carbon has the highest volume of adsorbi...
Activated carbon has the highest volume of adsorbing porosity of any material available to mankind. To put this into perspective, 5gms of Activated carbon would have the surface area of a football field.
Activated carbon can be made from many substances containing high carbon content such as coconut shells, coal and wood. The raw material has a very large influence on the characteristics and performance of activated carbon and plays a major part in determining ability to adsorb certain molecular species. Environmental concerns boost demand - Increasing concern over environmental pollution and quest for pure water has resulted in growing demand for activated carbon in the removal of contaminants from both liquid and gas streams. The global importance of activated carbon as a filtration and purification technology has led to the development of a variety of products for various applications.
Forms of Activated Carbon:
- Granular Activated Carbon - Irregular shaped particles with sizes ranging from 0.2 to 5 mm.
- Powder Activated Carbon - Carbon with a size predominantly less than 0.21mm (70 US mesh)
- Pelleted Activated Carbon - Extruded and cylindrical shaped with diameters from 0.8 to 5 mm.
Structure of Activated Carbon
- Micropores having radius less than 1nm
- Mesopores having radius 1 - 25nm
- Macropores having radius greater than 25nm
The major portion of the surface area is derived from the small diameter micro pore and the medium diameter mesopore regions. Micro pores have been found to be the most effective in trapping small molecules in gas and liquid phase applications.
The mesopore region is most suitable for adsorbing large molecular species such as colour molecules. Activated carbons produced from coconut shells exhibit a predominance of micro pores; while coal based carbons have a wider range of mesopores. The development of an extensive macro pore structure is found when either peat or wood is used as the raw material.
Our Products
Indocarb products are made from selected shells of coconut to ensure the highest quality during the manufacturing process. Our production facilities in India has the capability to carefully control particle size distribution, adsorption capacity and other critical carbon properties as required by our customers.
Advantages of Indocarb products,
- High hardness levels and low dust levels. This improves material handling characteristics and especially important where carbon fines cannot be tolerated.
- High surface area, up to 1350 m2/g. This allows for long life and high adsorption capacity.
- High retentivity, preventing unwanted desorption of adsorbed species
- Large fraction of micropores (< 20 Angstroms). This is important for removal of low-molecular-weight organics and for removal of trace levels of contaminant
- Low ash and fewer impurities
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