Carvão ativado em pó (PAC)
Buy 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)
Propriedades físicas:
- 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
Caraterísticas estruturais:
- Estrutura microporosa bem desenvolvida
- Volume total de poros elevado
- Rapid adsorption kinetics due to small particle size
Propriedades químicas:
- 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.
tipos relacionados de carvão ativado
- Valor de iodo: 700-1200 mg/g
- Área de superfície: 700-1200 m²/g
- Densidade aparente: 320-550 kg/m³
- Valor de iodo: 700-1200 mg/g
- Área de superfície: 700-1200 m²/g
- Densidade aparente: 320-550 kg/m³
- Valor de iodo: 700-1200 mg/g
- Área de superfície: 700-1200 m²/g
- Densidade aparente: 300-650 kg/m³
- Valor de iodo: 700-1200 mg/g
- Área de superfície: 700-1200 m²/g
- Densidade aparente: 320-550 kg/m³
- Método de ativação: Ativação por vapor/gás a altas temperaturas
- Estrutura de poros: Microporosa dominada, distribuição uniforme dos poros
- Perfil ambiental: Sem químicos, baixo teor de cinzas
- Aplicações principais: Adsorção em fase gasosa, purificação de água potável
- Método de ativação: Ativação química (por exemplo, H₃PO₄/ZnCl₂) a temperaturas moderadas
- Estrutura de poros: Mesoporoso-rico, maior área de superfície
- Eficiência do processo: Tempo de ativação mais curto, rendimento 30-50% mais elevado
- Pós-tratamento: É necessária uma lavagem com ácido para remover os resíduos
- Funcionalização: Carregado com agentes activos (por exemplo, I₂/Ag/KOH)
- Adsorção direcionada: Captura melhorada de poluentes específicos (por exemplo, Hg⁰/H₂S/gases ácidos)
- Personalização: Quimicamente optimizado para contaminantes alvo
- Aplicações principais: Tratamento de gases industriais, proteção CBRN
Benefícios
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.
Aplicações
Tratamento da água
PAC is extensively used in water purification processes, effectively removing organic compounds, taste, and odor-causing substances from drinking water and wastewater.
Indústria alimentar
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.
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