Abstract:
Sorbents for removal of mercury and other pollutants from gas streams, such as a flue gas stream from coal-fired utility plants, and methods for their manufacture and use are disclosed. Embodiments include brominated sorbent substrate particles having a carbon content of less than about 10%. Other embodiments include one or more oxidatively active halides of a nonoxidative metal dispersed on sorbent substrate particles mixed with activated carbon in an amount up to 30% by weight.
Abstract:
A method for producing a substantially desulfurized a hydrocarbon fuel stream at temperatures less than 100° C. The method includes providing a nondesulfurized fuel cell hydrocarbon fuel stream that may include water and passing the fuel stream sequentially through a zeolite Y adsorbent and a selective sulfur adsorbent. The zeolite Y adsorbent may be exchanged with copper ions. The method produces a substantially desulfurized hydrocarbon fuel stream containing less than 50 ppb sulfur.
Abstract:
A filtration media is disclosed comprising functionalized particles distributed throughout a sintered porous matrix, the sintered porous matrix derived from a combination of components comprising first ultra-high molecular weight polyethylene initially comprising a plurality of non-porous particles having a first shape that is substantially spherical; second ultra-high molecular weight polyethylene initially comprising a plurality of non-spherical perforated particles having a second shape that is convoluted; and third ultra-high molecular weight polyethylene initially comprising a plurality of non-spherical perforated particles having a third shape that is convoluted, wherein the functionalized particles comprise a range from about 20% by weight to about 90% by weight of the sintered porous matrix.
Abstract:
Methods and apparatus relate to treating fluid to at least reduce selenium content within the fluid. The treating includes conditioning stages to alter a composition of the fluid prior to removal of the selenium content from the fluid. The composition of the fluid after the conditioning stages facilitates the removal of the selenium content or at least limits detrimental impact to selenium removal efficiency.
Abstract:
Adsorbent compositions useful in adsorption, separation and purification processes are made using silicone-derived binding agents. The adsorbent compositions having enhanced adsorption rate and crush strength properties are made from agglomerated crystallite particles bound with silicone-derived binding agents. The silicone binder precursors are calcined during the manufacturing process to produce the silicone-derived binding agents. The adsorbent compositions are preferably used in air separation processes.
Abstract:
A sorptive-filtration system for removing at least one of negatively or positively charged ions, complexes or particulates from an aqueous stream. The system includes a) flow formed substantially from at least one of rainfall-runoff or snowmelt-runoff; b) a filter containment communicating with the runoff stream such that at least part of the stream passes through the filter containment; and c) a granular filter media disposed within the filter containment, the filter media having an amphoteric material applied thereto, wherein the amphoteric material comprises a metal selected from at least one of Fe, Al, Mn, or Si.
Abstract:
The present invention relates to a new synthetise for the preparation of mesoporous structures including mesoporous materials with chiral morphologies and mesoporous materials with local or surface chirality. The method can be used for manufacturing controlled drug delivery devices, for example for delivery of folic acid, and fluorescent particles.
Abstract:
A device for selectively removing contaminants from a crude product mixture which includes a production reactor for producing a crude oil product mixture, the production reactor includes a lipid reservoir and an alcohol reservoir and a first organic acid removal reactor in fluid communication with the production reactor. The first organic acid removal reactor includes a first housing defining an interior volume the housing configured to receive the crude oil products and disposed within the interior volume of the removal reactor housing is metal oxide media selected from the group consisting of zirconia, alumina, hafnia and titania for removing organic acidic contaminants from the crude oil product to product a purified biodiesel fuel.
Abstract:
A hydrotalcite-like substance capable of ion exchange with target anions, being of small crystal size that exhibits large basal spacing and excels at anion exchange performance; a process for producing the same; and a method of immobilizing hazardous substances. The hydrotalcite-like substance is produced by mixing an acidic solution containing aluminum and magnesium ions with an alkaline solution containing an alkali to synthesize a hydrotalcite-like substance, followed by, without ageing, water removal or neutralization. The molar ratio of aluminum ions and magnesium ions is preferably in the range of 1:5 to 1:2. Hazardous substances can be immobilized by pulverizing the hydrotalcite-like substance after synthesis and adding the powder to a subject, or adding a hydrotalcite-like substance in slurry form to a subject, or carrying out addition so as to cause the synthesis directly at the position of the subject. Furthermore, anion adsorption can be performed by a filter containing the hydrotalcite-like substance.