Product Overview
High iodine coal granular carbon GAC-P is a high-activity coal-based granular activated carbon engineered for enhanced drinking water and ultra-pure water treatment. Manufactured from premium bituminous coal through optimized carbonization and steam activation, it delivers an iodine adsorption value exceeding 1000 mg/g and a specific surface area above 1000 m²/g.
With controlled ash content, low floating rate, and high mechanical strength, GAC-P offers elevated adsorption capacity compared to standard coal-based GAC. It is designed for high-duty municipal, industrial, and food-grade water systems where maximum organic removal per unit volume is required.
Key Application Areas
- Ultra-Pure Water Systems — Provides enhanced TOC and trace organic removal in semiconductor, pharmaceutical, and power generation deionized water loops.
- Beverage & Food Processing — Purifies high-throughput ingredient water for breweries, soft drink bottling, and food manufacturing where rapid dechlorination and consistent quality are critical.
- Point-of-Entry (POE) Water Treatment — Handles higher organic loading and extended service intervals in whole-house and commercial building water treatment systems.
Specifications
| Technical Specifications | GAC-P 830 | GAC-P 1240 | Unit |
|---|---|---|---|
| Iodine Adsorption Value | >1000 | >1000 | mg/g |
| Moisture Content | <5 | <5 | % -wt |
| Ash Content | <15 | <15 | % -wt |
| Floating Rate | <6 | <6 | % -wt |
| Crush Strength | >90 | >90 | % |
| Specific Surface Area | >1000 | >1000 | m²/g |
| Particle Size >8 Mesh (1.70 mm) | <15 | - | % -wt |
| Particle Size >12 Mesh (1.70 mm) | - | <5 | % -wt |
| Particle Size <30 Mesh (0.6 mm) | <5 | - | % -wt |
| Particle Size <40 Mesh (0.43 mm) | - | <5 | % -wt |
Available particle size
- 8×30 Mesh ( 0.6 ~ 2.36 mm)
- 12×40 Mesh ( 0.43 ~ 1.7 mm)
- Other customized particle sizes
Packaging
- The 25kg / Package
- The 500 kg / Package
Key Advantages
- Enhanced Adsorption Capacity: Iodine >1000 mg/g delivers 10–15% higher organic removal capacity than standard 900 mg/g grades, extending time-to-breakthrough and reducing changeout frequency.
- High-Strength Granular Form: >90% crush strength and low floating rate ensure stable bed performance through repeated backwashing and hydraulic stress.
- Cost-Effective High Performance: Bituminous coal base provides premium adsorption capacity at a lower cost than equivalent coconut shell grades for large-volume installations.
- Compatible with Existing Systems: Same granular geometry and density as standard GAC allows direct upgrade in existing vessels without system modification.
How GAC-P Delivers High Iodine Coal Granular Carbon Performance
Standard coal-based water treatment carbons with 900 mg/g iodine perform reliably under normal municipal conditions. However, in high-throughput beverage plants, semiconductor UPW loops, or POE systems with elevated organic loading, standard grades may experience premature breakthrough—requiring more frequent changeouts, increasing labor costs, and risking downstream contamination.
GAC-P solves this through optimized activation. The high iodine coal granular carbon manufacturing protocol develops additional micropore volume beyond standard 900 mg/g grades, achieving >1000 mg/g iodine and >1000 m²/g surface area. This enhanced capacity extends time-to-breakthrough in fixed-bed vessels, reducing changeout frequency in continuous operations. The robust coal structure maintains >90% crush strength and low floating rate through repeated backwashing, ensuring stable bed performance in high-flow municipal and industrial installations.
GAC-P vs Standard GAC and Acid-Washed Variants
Standard GAC delivers >900 mg/g iodine for reliable drinking water and POE treatment at an economical price. GAC-P S offers the acid-washed variant with pH 5–8 for sensitive applications, though with slightly reduced iodine (>950 mg/g) due to the washing process.
GAC-P bridges this gap as the capacity-optimized high iodine coal granular carbon. It provides 10–15% higher organic removal capacity than standard GAC without the premium cost of coconut shell alternatives, making it a direct upgrade for existing vessels. The same granular geometry and density as standard GAC allow replacement without system modification. Choose standard GAC for routine municipal duty; select GAC-P S when pH-neutral effluent is required; choose high iodine coal granular carbon GAC-P when maximum capacity and extended service life are the priorities.