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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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Activated Carbon What is Adsorption? • Organic molecules bond to the internal pores of activated carbon
SomeDefinitions • Adsorption • Absorption • Sorption • Adsorbent • Adsorbate
Applications • Drinking water treatment • Groundwater remediation • Industrial wastewater treatment • Polishing of treated municipal waste • In a variety of gas-phase applications
Activated Carbon The Three Types/Forms of AC Powdered Granular Pelleted / Extruded
Activated Carbon Water Treatment Methods for GAC & PAC
Activated carbon is prepared in two steps • Carbonization step • Activation step: • Macropores: >25nm • Mesopores: >1 nm and <25nm • Micropores: <1nm
ActivationTypes • Steamactivation • Chemicalactivation
Charge on NOM The point of zero charge (pHPZC) pH at which the GAC surface charge =0 pH> pHPZC (-) charge pH< pHPZC (+) charge pHPZC