Adsorption is the core function of activated carbon. It refers to the carbon’s ability to trap and hold molecules from gases or liquids onto its surface.
This capacity is commonly measured by the iodine number (for liquid phase) and CTC value (for vapor phase). The higher the values, the greater the adsorption capacity.
A high adsorption capacity is critical in applications such as water treatment, air purification, gold recovery, and industrial wastewater treatment.
For example, YRD Carbon's coconut-based activated carbon typically delivers iodine values exceeding 1100 mg/g, making it ideal for drinking water purification.
The BET (Brunauer–Emmett–Teller) surface area measures the total area available for adsorption in square meters per gram.
High-quality activated carbon can reach over 1000 m²/g—a massive surface area packed into just a few grams of material. The larger the surface area, the more molecules it can capture.
This property is controlled through the activation process (steam or chemical), which is precisely engineered by YRD to create a tailored pore structure for your application.
The raw material used to produce activated carbon strongly influences its properties—hardness, ash content, porosity, and performance.
Here’s a quick comparison:
Coconut shell: High hardness, low ash, excellent microporosity – best for water purification and precious metal recovery.
Coal: Strong adsorption for organic vapors – ideal for air and gas filtration.
Wood: Wider pore distribution – used in food and pharmaceutical industries.
At YRD, we focus on coconut-derived activated carbon due to its renewable nature and outstanding performance consistency.
Each application demands a different combination of adsorption performance, surface area, and raw material properties.
Air purification → Needs high CTC (A) and stable pore structure (B).
Gold recovery → Requires hard coconut-based carbon (C) with high BET surface area (B).
Industrial wastewater → Prioritize iodine number (A) and micropore strength.
Understanding these ABCs allows you to make smarter, data-backed choices when sourcing activated carbon.
At YRD Carbon, we go beyond supply—we offer guidance. Our technical team can:
Analyze your performance requirements
Recommend the best product fit
Support you in custom solutions
Ningxia Yongruida Carbon Co,.Ltd was founded in
2003.With an area of over 50000 square meters ,our
factory is located in the city of Shizuishan Ningxia .
