| 主权项 |
1. A method of providing an adsorptive filtering unit having an extended in-service and/or on-stream life, in particular having improved and/or increased stability and/or resistance to biocontamination and/or biofouling, in particular an adsorptive filtering unit for treating and/or cleaning a fluidic medium, preferably water, more preferably wastewater or tapwater, and/or in particular for adsorptive removal of inorganically or organically, in particular organically, based impurities,
comprising the step of endowing and/or equipping the filtering unit with at least one particulate adsorbent in the form of a spherical activated carbon, wherein the activated carbon has a total pore volume, in particular a Gurvich total pore volume, in the range from 0.15 cm3/g to 3.95 cm3/g, wherein not less than 60% (i.e., ≧60%) of the total pore volume, in particular of the Gurvich total pore volume, of the activated carbon is formed by pores having pore diameters of not more than 50 nm (i.e., ≦50 nm), in particular by micro- and/or mesopores, and wherein the activated carbon has a hydrophilicity, determined as water vapor adsorption behavior, such that at a partial pressure p/p0 of 0.6 not more than 30% of the maximum water vapor adsorption capacity of the activated carbon is exhausted and/or utilized, and/or wherein at a partial pressure p/p0 of 0.6 not more than 30% of the maximum water vapor saturation loading of the activated carbon is reached. |
