Abstract: Provided is a release device including a housing having an inlet and an outlet, a heating element arranged in the housing, a first fan arranged to move air into the inlet and around the heating element, and a second fan arranged to move vapor out of the outlet. Other embodiments and arrangements are disclosed.

Abstract: A sterilization particle includes a porous carrier material having at least one of the following: a microporous material, a mesoporous material, a macroporous material, or a combination thereof; and a sterilization material contained in pores of the porous carrier material or adsorbed on a surface of the porous carrier material. The sterilization material includes at least 4 weight percent of the sterilization particle. A sterilization device, a method for preparing a sterilization particle, and a method for sterilizing a space are also disclosed.

Abstract: A process for producing polyurethane foam filter material with adsorption capabilities, containing a solid adsorbent, that comprises a one shot process of reacting a polyurethane foam-forming formulation, comprising isocyanates and polyesters or polyethers, catalysts, silicone oils and water, characterized in that particles of the adsorbent material are included directly in the foam-forming formulation, without any surface pretreatment, after cleansing by heating. The resulting filter material can be sliced in plates of various thicknesses according to the intended particular use, and this use can be in air filtering systems, for purification of air or water, ion-exchange, deodorization, drying, prevention of public hazards, or the separation and purification.