Powdered Activated Carbon (PAC)
PAC (Powdered Activated Carbon) is a type of activated carbon that consists of a finely ground form with small particles and a large surface area. As an adsorbent material, PAC is versatile, and is produced from a variety of raw materials including coconut shells, wood or coal which is treated with activation and pulverization.
Key characteristics of Powdered Activated Carbon include:
Key Characteristics Of Powdered Activated Carbon (PAC)
Physical Properties:
- Fine particle size, typically ranging from 150 to 350 mesh
- High surface area, often exceeding 800 m²/g
- Low bulk density, usually between 220-550 kg/m³
Structural Features:
- Well-developed microporous structure
- High total pore volume
- Rapid adsorption kinetics due to small particle size
Chemical Properties:
- Low ash content, generally less than 5%
- Moisture content typically below 5-10%
- Adjustable pH value, commonly between 3-9
Performance Attributes:
- High iodine number, ranging from 800 to 1300 mg/g
- Methylene blue adsorption value between 100-230 mg/g
- Carbon tetrachloride activity (CTC) from 50% to 100%
Raw Material Sources:
- Primarily derived from coconut shells or wood
- Available in various grades, including wood-based phosphoric acid activated carbon
The unique particle size, surface area, and pore structure of Powdered Activated Carbon make it desirable for numerous applications where fast adsorption and high-performance are required. Sourcing raw materials and control over the activation process allows the properties of Powdered Activated Carbon to be customized for different industries.
related types of activated carbon
- Iodine Value: 700-1200 mg/g
- Surface Area: 700-1200 m²/g
- Apparent Density: 320-550 kg/m³
- Iodine Value: 700-1200 mg/g
- Surface Area: 700-1200 m²/g
- Apparent Density: 320-550 kg/m³
- Iodine Value: 700-1200 mg/g
- Surface Area: 700-1200 m²/g
- Apparent Density: 300-650 kg/m³
- Iodine Value: 700-1200 mg/g
- Surface Area: 700-1200 m²/g
- Apparent Density: 320-550 kg/m³
- Activation Method: Steam/gas activation at high temperatures
- Pore Structure: Microporous-dominated, uniform pore distribution
- Environmental Profile: Chemical-free, low ash content
- Primary Applications: Gas-phase adsorption, drinking water purification
- Activation Method: Chemical activation (e.g., H₃PO₄/ZnCl₂) at moderate temperatures
- Pore Structure: Mesoporous-rich, higher surface area
- Process Efficiency: Shorter activation time, 30-50% higher yield
- Post-Treatment: Acid-washing required to remove residues
- Functionalization: Loaded with active agents (e.g., I₂/Ag/KOH)
- Targeted Adsorption: Enhanced capture of specific pollutants (e.g., Hg⁰/H₂S/acid gases)
- Customization: Chemically optimized for target contaminants
- Core Applications: Industrial gas treatment, CBRN protection
Benefits
High Surface Area
PAC offers an exceptionally high surface area, ranging from 800 to 1300 m²/g, providing superior adsorption capacity.
Versatile Particle Size
Available in various mesh sizes (150/200/300/350), allowing for customization to specific application requirements.
Low Ash Content
Consistently low ash content (＜5%), ensuring high purity and minimal interference in treatment processes.
Customizable pH
Adjustable pH values (3-8 or 6-9) to suit different environmental conditions and treatment needs.
Excellent Adsorption Performance
High iodine value (800-1300 mg/g) and methylene blue adsorption (100-230 mg/g) indicate superior adsorption capabilities.
Diverse Raw Materials
Produced from various sources like coconut shells and wood, offering different characteristics to meet specific requirements.
Rapid Dispersion
Fine particle size allows for quick dispersion in liquids, enabling fast adsorption kinetics.
Applications
Water Treatment
PAC is extensively used in water purification processes, effectively removing organic compounds, taste, and odor-causing substances from drinking water and wastewater.
Food Industry
In food processing, PAC helps in decolorization, purification, and removal of impurities, ensuring high-quality products in various applications such as sugar refining and edible oil production.
Pharmaceutical Applications:
PAC plays a crucial role in the pharmaceutical industry for purification of medicines, removal of toxins, and as an ingredient in certain medical treatments.
Soil Improvement:
When applied to soil, PAC can help in remediation efforts by adsorbing contaminants and improving soil structure, benefiting agricultural and environmental restoration projects.
