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ADSORPTION

ADSORPTION. Activated Carbon. What is A d sorption? Organic molecules bond to the internal pores of activated carbon. Some Definitions. Adsorption Absorption Sorption Adsorbent Adsorbate. Applications. Drinking water treatment Groundwater remediation Industrial wastewater treatment

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ADSORPTION

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  1. ADSORPTION

  2. Activated Carbon What is Adsorption? • Organic molecules bond to the internal pores of activated carbon

  3. SomeDefinitions • Adsorption • Absorption • Sorption • Adsorbent • Adsorbate

  4. Applications • Drinking water treatment • Groundwater remediation • Industrial wastewater treatment • Polishing of treated municipal waste • In a variety of gas-phase applications

  5. Activated Carbon The Three Types/Forms of AC Powdered Granular Pelleted / Extruded

  6. Activated Carbon Water Treatment Methods for GAC & PAC

  7. Activated carbon is prepared in two steps • Carbonization step • Activation step: • Macropores: >25nm • Mesopores: >1 nm and <25nm • Micropores: <1nm

  8. ActivationTypes • Steamactivation • Chemicalactivation

  9. Charge on NOM The point of zero charge (pHPZC)  pH at which the GAC surface charge =0 pH> pHPZC (-) charge pH< pHPZC (+) charge pHPZC

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