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Element that Affects The Adsorption Performance Of Activated Carbon

May. 28, 2018

There are many kinds of activated carbon used in our daily life. Especially activated carbon for water treatment or called powder activated carbon for drinking water. Do you know element that affects adsorption performance of activated carbon?

Activated Carbon for Water Treatment

The nature of activated carbon adsorbent

The larger the surface area, the stronger the adsorption capacity. The activated carbon is a non-polar molecule, and it is easy to adsorb non-polar or very polar adsorbate; the size of activated carbon adsorbent particles, the structure and distribution of pores, and surface chemical properties, etc. It also has a great influence on adsorption.

Adsorbent properties

It depends on its solubility, surface free energy, polarity, size and unsaturation of adsorbate molecules, concentration of attached substances, and the like.

Wastewater PH

Activated carbon generally has a higher adsorption rate in acidic solutions than in alkaline solutions.

The pH value will influence the state and solubility of the adsorbate in the water, thus affecting the adsorption effect.

Coexisting substances

When multiple adsorbates are coexisted, the adsorption capacity of activated carbon for a certain adsorbent is poorer than that of adsorbent only when it is contained.

Temperature

The effect of temperature on the adsorption of activated carbon is small.

Contact time

It should be ensured that the activated carbon has a certain contact time with the adsorbent so that the adsorption is close to equilibrium and the adsorption capacity is fully utilized.


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