|
Activated Carbon Efficiency Table for Vapor GAC Some of the contaminants listed in the following table are specific chemical compounds. Some represent classes of compounds, and others are mixtures of variable composition. The activated carbon capacity for odors as noted in the table by the numbers 1-4, varies somewhat with the odors concentration in the air with humidity and temperature. The numbers listed in the Index represent typical or average conditions, and might vary in specific instances. These are some of the more common chemicals that we are asked to address. The capacity index numbers on the Carbon Efficiency Table are clarified by the following descriptions: (4) High capacity for all materials in this category. One pound of carbon adsorb approximately 20% to 50% of its own weight. This category includes most of the odor causing substances. (3) Satisfactory capacity for all items in this category. These constitute good applications but the capacity is not as high as for category 4. One pound of carbon adsorbs approximately 10% to 20% of its own weight. (2) Includes substances which are not highly adsorbed, but which might be taken up sufficiently to be of good service under the particular conditions of operations. These require individual checking. (1) Adsorption capacity is low for these materials. Activated carbon cannot be satisfactorily used to remove them under ordinary circumstances. Note: * These contaminants can be removed with specially impregnated carbon which will raise the category of efficiency for that contaminant to category 3 or 4.
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
|