Product Overview
DCS is an acid-washed coal-based granular activated carbon engineered for decolorization and purification applications where pH stability is critical. Manufactured from select bituminous coal through carbonization, steam activation, and extended acid washing, it achieves a neutral pH range of 5–8 while maintaining high adsorption capacity.
Available in two mesh configurations—DCS 830 and DCS 1240—this grade delivers iodine adsorption exceeding 950 mg/g and methylene blue above 160 mg/g. The acid-washing protocol removes soluble ash and alkaline residues, making DCS ideal for pharmaceutical, sugar, and chemical processing where standard coal carbons would introduce pH excursions or metallic contamination.
Specifications
| Technical Specifications | DCS 830 | DCS 1240 | Unit |
|---|---|---|---|
| Iodine Adsorption Value | >950 | >950 | mg/g |
| Moisture Content | <5 | <5 | % -wt |
| Methylene Blue Adsorption Value | >160 | >160 | mg/g |
| pH | 5-8 | 5-8 | - |
| Average Particle Size | 1.4-1.7 | 1.2-1.4 | mm |
| Crush Strength | >90 | >90 | % |
| Specific Surface Area | >900 | >900 | m²/g |
| Particle Size >8 Mesh (1.70 mm) | <10 | - | % -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 |
Key Application Areas
- Organic Acid Purification — Removes color bodies and impurities from organic acid process streams without altering acid chemistry or introducing alkaline contaminants.
- Inorganic Acid Treatment — Polishes inorganic acids by adsorbing organic contaminants and trace color bodies, maintaining product clarity and specification compliance.
- Chemical Processing & Purification — Purifies intermediates, solvents, and fine chemicals where pH-neutral adsorption prevents unwanted side reactions.
- Sugar Decolorization — Treats cane and beet sugar syrups to achieve target brightness while maintaining neutral pH that avoids inversion or degradation of sucrose.
- Pharmaceutical Purification — Decolorizes active pharmaceutical ingredients and excipients where low ash and pH stability are required for regulatory compliance.
Key Advantages
- Acid-Washed pH Stability: The 5–8 pH range eliminates alkaline spikes common in standard coal carbons, protecting pH-sensitive processes and reducing post-treatment correction needs.
- Dual-Indicator Performance: Iodine >950 mg/g ensures rapid small-molecule adsorption, while methylene blue >160 mg/g confirms effective large-molecule and color body removal.
- Low Extractable Content: Acid washing reduces soluble ash and metal ions, minimizing contamination risk in pharmaceutical and food-contact applications.
- Dual Mesh Options: DCS 830 (1.4–1.7 mm) suits high-flow systems; DCS 1240 (1.2–1.4 mm) offers enhanced kinetics for tighter purification requirements.
Available particle size
- 8×30 Items ( 0.6 ~ 2.36 mm)
- 12×40 Items ( 0.43 ~ 1.7 mm)
Packaging
- The 25kg / Package
- The 500 kg / Package
