DEVICES AND METHODS FOR CHEMICAL REACTIVE FILTRATION

摘要

A gas contaminant is filtered using fibers (2) having internal cavities (10) containing a chemically reactive oxidizing agent (12), an acid or base, a coordinating agent, a complexing agent, or a deliquescing agent. Where the contaminant is basic, the reagent (12) is preferably an oxidizing agent. Where the contaminant is acidic, the reagent (12) is preferably basic, and more preferably comprises a group 1 or group 2 metal cation. The reagent (12) may also advantageously comprise a phosphate, chitosan, hypochlorite, borate, carbonate, hydroxide, or oxide. Where the contaminant is neutral, the reagent (12) is preferably an oxidizing agent, complexing agent, coordinating agent, or deliquescing agent. The reagent (12) is preferably impregnated into an adsorptive solid, including, for example, carbon powder, zeolite, aluminum oxide, or silica. The fibers (2) are preferably multilobal, and most preferably either trilobal or quadrilobal. It is also preferred that the fibers (2) contain a plurality of T shaped lobes (6).