Product Overview
GAC is our standard coal-based granular activated carbon—the workhorse product that has served water treatment plants, industrial facilities, and municipalities for decades. Manufactured from select bituminous coal through carbonization and steam activation, GAC delivers the balanced performance that makes coal-based carbon the most widely used activated carbon type globally.
The coal base provides inherent advantages: high carbon content for excellent activation yield, natural hardness for durability in fixed-bed systems, and a well-balanced pore structure that handles both small molecules (like chlorine) and larger organics (like pesticides and herbicides) effectively.
Specifications
| Technical Specifications | GAC 830 | GAC 1240 | Unit |
| Iodine sorption value | > 900 | > 900 | mg/g |
| Moisture content | < 5 | < 5 | % -wt |
| Ash content | < 15 | < 15 | % -wt |
| Floating rate | < 6 | < 6 | % -wt |
| Intensity | > 90 | > 90 | % |
| Specific area | > 900 | > 900 | m²/g |
| > 8 Items (1.70 mm) | < 15 | - | % -wt |
| > 12 Items (1.70 mm) | - | < 5 | % -wt |
| <30 Items (0.6 mm) | < 5 | - | % -wt |
| <40 Items (0.43 mm) | - | < 5 | % -wt |
Key Application Areas
- Municipal drinking water treatment — taste, odor, and organic contaminant removal
- Industrial process water — protecting downstream equipment and product quality
- Wastewater tertiary treatment — polishing before discharge or reuse
- Groundwater remediation — pump-and-treat systems for contaminated sites
- Air purification — general VOC and odor control in industrial settings
Why Coal-Based Carbon
- Cost-Effective: Coal is abundant and consistently priced, making GAC economical for large-scale applications
- High Strength: Natural coal hardness translates to >90% crush strength, reducing fines generation during backwash
- Balanced Pores: The activation process develops both micropores (for small molecules) and mesopores (for larger organics)
- Regenerable: Thermal reactivation restores capacity for multiple cycles, reducing long-term costs
