macro- and mesopores can generally be regarded as the highways into the carbon particle, and are crucial for adsorption kinetics. macro pores are used for the transport, and absorption occurs in the meso- and micropores.
small molecules, such as methylene blue, which has a molecular weight of 319.86 daltons, are mainly captured in micropores.
for larger impurity molecules, other pore structures in the carbon must b available to nsure optimal adsorption. carbon, whch can capture larger molecules, tends to adsorb smaller impurities as well, whereas dedicated carbons for small molecules do not remove larger contaminants.
table 1 provides an overview of how different aks grades may suit an application based on their general characteristics. however, due to the various factors that may affect the adsorption process, pall recommends scaled-down testing of several seitz aks filter media using pall upscalesm program test kits as the most reliable way of selecting a suitable grade.
