Abstract: Dry-scrubbing media compositions, methods of preparing same, and methods of use are provided. The compositions contain activated alumina and potassium carbonate. Optionally, activated carbon and other impregnates, such as sulfates of group 1A metals, are included in the compositions. The compositions exhibit improved efficiency and capacity for the removal of compounds such as chlorine or sulfur dioxide from an air-stream. The compositions are particularly useful for reducing or preventing the release of toxic gaseous compounds from the areas such as petroleum storage areas, refineries, drinking water systems, sewage treatment facilities, swimming pools, hospital morgues, animal rooms, and pulp and paper production sites.

Abstract: A method for forming a filtration media from waste media includes combining the waste media with a binder to form a dry mixture, adding a liquid composition to the dry mixture to form a slurry, and extruding the slurry to form a filtration media. The waste media may include fines or oversized media resulting from a prior media production process that have been subjected to a hydration process. The waste media may be ground and sized prior to combining it with the binder. The binder may include clay, cellulose materials, and combinations thereof. The liquid composition may include water and optionally one or more additional additives selected from the group consisting of permanganates, acids, bases, amines and combinations thereof. In one embodiment, the slurry is extruded into a honeycomb matrix.

Abstract: A scrubber that employs a dry chemical medium includes a first vessel defining a first cavity. A second vessel adjoining the first vessel defines a second cavity, and the first and second cavities combine to form a common chamber. A fan draws a gaseous stream into the chamber at a first location and extracts the gaseous stream from the chamber at a second location. A plurality of partitions extend substantially from the upper end of the chamber to the floor. A dry chemical medium is disposed within the spaces between the partitions for neutralizing a pollutant in a gaseous stream. The partitions have openings of a sufficiently large size to permit gas to flow therethrough but of a sufficiently small size to prevent the dry chemical medium from passing therethrough. A method for converting a wet scrubber to a dry scrubber of the type described is also disclosed.

Abstract: A solid air filtration medium includes an impregnate with an organic amine and an inorganic metal salt. The medium has from about 0.1 to about 25% by weight of impregnate. The impregnate contains from about 0.1 to about 5% by weight organic amine, and the organic amine includes aqueous urea, solid urea, melamine or mixtures thereof. The impregnate contains from about 0.1 to about 5% by weight metal salt, and the metal salt includes magnesium oxide, calcium oxide or mixtures thereof. The impregnate optionally further includes a surfactant such as polyacrylic acid. Methods for forming a solid air filtration medium having an impregnate containing an organic amine and an inorganic metal salt and methods for removing contaminants from a fluid stream are also provided.

Abstract: Dry-scrubbing media compositions, methods of preparing same, and methods of use are provided. The compositions contain activated alumina and potassium carbonate. Optionally, activated carbon and other impregnates, such as sulfates of group 1A metals, are included in the compositions. The compositions exhibit improved efficiency and capacity for the removal of compounds such as chlorine or sulfur dioxide from an air-stream. The compositions are particularly useful for reducing or preventing the release of toxic gaseous compounds from the areas such as petroleum storage areas, refineries, drinking water systems, sewage treatment facilities, swimming pools, hospital morgues, animal rooms, and pulp and paper production sites.

Abstract: Methods and apparatuses for mounting a filtration housing for solid filtration media. One aspect of the invention includes a method for mounting an air circulation component to an air circulation system, wherein the air circulation component includes a center of gravity. The method includes providing a notch associated with an air circulation component wherein the notch includes a contact surface; providing a guide associated with the air circulation system, wherein the guide includes a load bearing surface; and positioning the air circulation component with respect to the air circulation system such that a portion of the contact surface is adjacent to a portion of the load bearing surface, wherein the adjacent surfaces comprise a contact angle that is substantially coplanar with a center of gravity of the air circulation component, and wherein a portion of the weight of the air circulation component transferred between the surfaces causes a sealing pressure against a portion of the air circulation system.

Abstract: A fiber filter, method of preparing the fiber filter, and method of treating a fluid stream with the fiber filter are disclosed. The fiber filter comprises an inert fiber matrix, water, and a substrate bound to the fiber matrix that is capable of oxidizing or neutralizing a contaminant. More specifically, the substrate bound to the fiber matrix is sodium bicarbonate, impregnated activated alumina, impregnated zeolite, or a mixture thereof. The impregnate is a permanganate salt, sodium bicarbonate, or a mixture thereof. Improved efficiency of removal of undesirable compounds such as hydrogen sulfide and sulfur dioxide from fluid streams is achieved.

Abstract: An improved filtration media, method of preparing the media, and method of treating a fluid stream with the media are disclosed. The improved media comprises a substrate having elevated levels of permanganate and water in one embodiment. More specifically, the improved media comprises a porous substrate impregnated with at least approximately 5% permanganate, and at least approximately 10% water, by weight. In another embodiment, the media further comprises sodium bicarbonate. Improved efficiency of removal of undesirable compounds such as hydrogen sulfide is achieved.

Abstract: A fiber filter, method of preparing the fiber filter, and method of treating a fluid stream with the fiber filter are disclosed. The fiber filter comprises an inert fiber matrix, water, and a substrate bound to the fiber matrix that is capable of oxidizing or neutralizing a contaminant. More specifically, the substrate bound to the fiber matrix is sodium bicarbonate, impregnated activated alumina, impregnated zeolite, or a mixture thereof. The impregnate is a permanganate salt, sodium bicarbonate, or a mixture thereof. Improved efficiency of removal of undesirable compounds such as hydrogen sulfide and sulfur dioxide from fluid streams is achieved.

Abstract: A disposable paperboard container for holding a bed of solid filtration media is disclosed. The container is strong enough to prevent excessive pillowing, has sufficient open area to minimize the pressure drop across the bed, avoids bypass gaps caused by settling of media, is made of environmentally safe disposable materials which do not react with the media or absorb excess moisture, and is inexpensive enough to be discarded rather than refilled. In accordance with other aspects of the invention, space within a media container created by settling is automatically occupied by expandable plugs to prevent bypass. Container units embodying the invention may be combined to form filtration modules which are strong, yet light enough to be handled easily.

Abstract: A method and apparatus for using a coated piezoelectric crystal to monitor and report corrosion in terms recognized as conforming to an industry standard is disclosed. The present invention provides a method of and system for monitoring corrosion in a corrosive atmosphere, comprising and carrying out the steps of exciting in the atmosphere a crystal, coated with a corrodible metallic substance and having a known vibration frequency; measuring the change in the frequency of vibration resulting from corrosion of the corrodible substance during each of a plurality of intervals of time, including a reference interval and at least one subsequent measurement interval; generating a thickness signal representing the thickness of corrosion corresponding to the measured change in frequency during the measurement interval; and converting the corrosion thickness signal for the measurement interval to a reference signal representing the thickness of corrosion accumulated during the reference interval.

Abstract: An adsorbent composition, method of preparing same, and method of treating a fluid stream with the absorbent are disclosed. Alumina and carbon are combined with water in preferred proportions in one embodiment. Sodium bicarbonate and impregnates such as Group 1A metal hydroxides and Group 7A salts of Group 1A metals can be added. Improved efficiency of removal of compounds such as hydrogen sulfide is achieved, and ignition temperature is reduced.