Main Raw Materials for Honeycomb Activated Carbon
A brief introduction to the differences among the three main raw materials for honeycomb activated carbon.
Main Raw Materials for Honeycomb Activated Carbon
Raw Material Sources and Pore Structure
Coconut Shell-based: Made from coconut shells via high-temperature carbonization and activation. The dense raw material develops highly microporous structure after activation, with micropores accounting for 80%–90% of total pore volume and specific surface area of 1,000–1,400 m²/g.
Coal-based: Made from bituminous coal, anthracite, and other coal types. Abundant resources, low cost, suitable for large-scale production. Pore structure combines micropores and mesopores with broad pore size distribution and specific surface area of 800–1,100 m²/g.
Wood-based: Made from wood chips, sawdust, and other wood processing residues. Carbonization and activation produce well-developed mesopores and macropores, with a lower proportion of micropores. Specific surface area ranges from 900–1,200 m²/g.
Comparison of Adsorption Performance
Parameters | Coconut Shell-based | Coal-based | Wood-based |
Iodine Adsorption Value (mg/g) | 1000-1200 | 800-1000 | 900-1100 |
Methylene Blue Adsorption (mg/g) | 150-200 | 100-150 | 200-300 |
Ash Content (%) | 2-5 | 10-20 | 3-8 |
Compressive Strength | High | Relatively High | Moderate |
Cost | Highest | Lowest | Moderate |
Typical Application Scenarios
Application Fields | Recommended Raw Materials | Rationale |
VOCs Waste Gas Treatment | Coal-based, Coconut Shell-based | High mechanical strength, resistant to airflow impact, large adsorption capacity |
Indoor Air Purification | Coconut Shell-based | Well-developed microporosity, high adsorption efficiency for small-molecule pollutants, low ash content |
Solvent Recovery | Coconut Shell-based, Coal-based | Excellent performance in adsorption-desorption cycles |
Wastewater Treatment (Dyes & Dyeing) | Wood-based | Well-developed mesoporosity, strong adsorption capacity for large-molecule organic substances |
Desulfurization & Denitrification | Coal-based | Low cost, can be modified via catalyst impregnation |
Drinking Water Purification | Coconut Shell-based | Low ash content, no chemical leaching, high safety |
Odor & Formaldehyde Removal | Coconut Shell-based | Well-developed microporosity, high adsorption efficiency |
Key Selection Criteria
Based on Target Adsorbate:
Small-molecule gases (formaldehyde, benzene, VOCs) → Coconut-shell based
Large-molecule organic substances (dyes, colloids) → Wood-based
Mixed pollutants → Coal-based (broad pore size distribution)
Based on Operating Conditions:
High airflow velocity, high impact → Coconut-shell or coal-based (high mechanical strength)
Low velocity, static adsorption → Wood-based is sufficient
Based on Regeneration Requirements:
Requires multiple thermal regeneration cycles → Coconut-shell or coal-based (retains strength well)
Single-use application → Wood-based offers cost advantages
Based on Safety Requirements:
Drinking water, food contact applications → Coconut-shell based (low ash content, contaminant-free)
Industrial waste gas treatment → Coal-based or wood-based are both suitable
Summary
These three raw materials exhibit significant differences in terms of pore structure, adsorption performance, and application scenarios. Material selection requires a comprehensive assessment based on the specific adsorbate and operating conditions. We are a China-based supplier of honeycomb activated carbon; for further information, please contact us via email at annayu@169chem.net or via WhatsApp at +8618909016373.