Granular
GRANULAR ACTIVATED CARBON
The Granular Activated Carbon (GAC) is a highly porous form of carbon, derived from coconut shells, to remove contaminants through a process called adsorption. It's widely used for its effectiveness in improving water quality by reducing undesirable taste, odors, and specific chemical impurities.
Common Applications
8 x 16 Mesh (1.70~2.36mm):
- Water Treatment: Used in large carbon tanks, municipal filtration systems, and point-of-entry whole-house filters to effectively adsorb chlorine, PFAS, VOCs (Volatile Organic Compounds), and odor-causing impurities.
- Gold Recovery: Utilized in mining processes such as Carbon-in-Pulp (CIP), Carbon-in-Leach (CIL), and Carbon-in-Column (CIC) circuits to extract gold from cyanide solutions.
- Wastewater & Industrial Purification: Deployed in gravity filters and pressure vessels for chemical processing, electric power plants, and aquaculture systems requiring deep carbon beds and minimized backpressure.
- Air & Gas Phase Filtration: Serves as a reliable adsorption media in large-scale industrial air purifiers, exhaust systems, and gas masks.
Physical and Chemical Characteristics
Raw material
Mesh size
Iodine number
Hardness
Bulk density
pH
Ash content
Moisture content
CTC absorption
: Coconut shell
: 8 x 16 mesh
: 900 mg/g
: 95%
: 0.50~60 g/cc
: 8~10 pH
: 5%
: 3%
: 3%
12 x 40 Mesh (0.425~1.70mm):
- Dechlorination: Rapidly breaks down and removes free chlorine from municipal water supplies to protect downstream equipment like reverse osmosis (RO) membranes.
- Organics Removal (TOC, VOCs): Adsorbs volatile organic compounds, trihalomethanes (THMs), pesticides, and industrial solvents that affect water safety.
- Taste and Odor Improvement: Highly effective at trapping geosmin and 2-methylisoborneol (MIB), the compounds responsible for earthy or musty tastes in drinking water.
- Point-of-Use (POU) & Point-of-Entry (POE) Systems: Used extensively in residential under-sink filters, countertop units, and whole-house media tanks.
- Pre-Treatment for Commercial RO: Used in multi-media filtration setups to strip out oxidizers before the water reaches polyamide RO membranes, preventing premature membrane degradation.
Physical and Chemical Characteristics
Raw material
Mesh size
Iodine number
Hardness
Apparent density
pH
Ash content
Moisture content
CTC absorption
: Coconut shell
: 12 x 40 mesh
: 1000 mg/g
: 98%
: 0.45~0.55 g/ml
: 9~11
: 5%
: 5%
: 3%
?
