Granular activated carbons are mostly made from Coconut Shells on petroleum coke, bituminous coal or lignite. Granular activated carbon is used in continuous process in areas like water treatment(drinking & effluent water), removal of mercury from effluents or alkali cells, solvent recovery, gold recovery, removal of odour, gas masks, as catalyst carrier, for decholorination of water, purification & separation of gases, kitchen hoods, dry cleaning etc.
Specification for Coconut Shell based Granular Activated Carbon
| Properties | Units | Grades of granular activated carbon | |||
|---|---|---|---|---|---|
| ASTM | SG-500 | SG-800 | SG-1000 | SG-1100 | |
| Iodine Value | No | 550 | 850 | 1000 | 1100 |
| Apparent Density | kg/m3 | 580 | 550 | 510 | 480 |
| CTC Adsorption | % | 25 | 50 | 55 | 60 |
| Hardness | % | 99 | 98 | 98 | 98 |
| Ash Content | % | 5 | 4 | 3 | 3 |
| pH Value | 8-10 | ||||
| Sieve Size | Any Desired Size | ||||