What is?

Activated carbon - is a form of carbon that has been processed to make it extremely porous and thus to have a very large surface area available for adsorption or chemical reactions 
Adsorption - is a process that occurs when a gas or liquid solute accumulates on the surface of a solid or a liquid (adsorbent), forming a film of molecules or atoms 
BAC – Biological Activated Carbon
BOD – Biological Oxygen Demand
Desorption is a phenomenon whereby a substance is released from or through a surface
DOC – Dissolved Organic Carbon
EBCT – Empty Bed Contact Time 
GAC – Granular Activated Carbon
Iodine number - is the mass of iodine in grams that is consumed by 100 grams of a chemical substance. Measures the amount of pores in the carbon
Macropores – the largest pores in a substance
Mesopores – the middle pores in a substance
Micropores– the smallest pores in a substance 
MTZ – Mass Transfer Zone 
NOM – Natural Organic Matter
PAC – Powder Activated Carbon
Pesticide- is a substance or mixture of substances used to kill a pest 
Sorption – encompasses both absorption and adsorption
Surface area - is the measure of how much exposed area an object has. 
Reactivation/regeneration – a process in which the carbon regain its original values