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Chemical Activation Activated Carbon

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Classification Introduction

Chemical Activation Activated Carbon Diameter Activated Carbons Activated carbon preparation Chemical activation is a one-step process in which the raw materials are impregnated with a chemical activating agent, e.g. phosphoric acid, zinc chloride, potassium hydroxide, and then carbonised at moderately high temperatures (400-700 °C). As a result of this more energy-efficient activation process, activated carbons are produced with very high surface areas, with highly developed porosity. Because of the chemical activation route, the size distribution of the pores can be controlled very accurately, particularly leading to the development of more mesopores than in physical activation, which are useful for the sorption of large molecules and organic compounds. This route of production leads to the choice of wide variety of precursor materials such as wood and other agricultural by-products, peat, etc., leading to activated carbons with great adsorption capacities tailored for specific applications in liquid phase purification and special industrial processes.

Product Advantages and Characteristics

  • Unusually high surface areas: Typical surface areas are between 1000 and 2000 m²/g due to development of a large proportion of the pore volume by chemical means during activation.
  • Mesopore structure: Chemical activation generates a suitable mesopore distribution for adsorption of materials of high molecular weight, such as colour bodies, or for the adsorption of smaller molecules.
  • Lower activation temperature: Chemical activation may be accomplished at a lower temperature than physical activation.
  • Control of pore size: The choice of chemical and the ratio used in the impregnation give control over the pore size distribution produced.

Why Choose Us

Production

We combine chemical impregnation technology with tailored temperature profiles to consistently produce high-surface-area products with minimal residual chemicals.

Sales

Our supply contracts with chemical vendors stabilize our costs for raw resources and for pricing our chemically activated carbon products.

Service

We provide specialised consultation on chemical activation and washing procedures.

Relevant Application Scenarios

Water Treatment
Food & Beverage
Chemical

Water Treatment

Classification Description: Chemically activated carbon is employed for liquid phase adsorption of organic substances. Its high surface area and mesoporous structure or range of porosities provides large adsorptive area for organic compounds.

Wastewater treatment

Used to remove complex organic materials/colours/COD from industrial wastewaters. Waste water treatment/discharge. Removes colouring materials and COD from industrial effluents.

Drinking Water Treatment

Removal of synthetic organic chemicals, pesticides and disinfection by products precursors from drinking water

Food & Beverage

Classification Description: The strong decolorizing ability of chemically activated carbon fills the requirements of this industry well.

Food De-colourizing

Black carbon removal from sugar and oils etc. Cleaning of food processing streams.

Chemical

Classification Description: The maximum total surface area etc can be detailed exactly as requirements arise in the chemical from chemical use of solid sorbents.

Catalytic

Removes VOCs and odours in the treatment of air for commercial and industrial premises.

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