Abstract:
The present invention relates to a method of utilizing the aerodynamic interlacing process to produce a chemical filter media, comprising the steps of: (a) utilizing the airflow to bring short-cut fibers and functional particulates to a composite air blower, thereby enabling the blowing air of the short-cut fibers and the functional particulates to enter into diffusing mixing conveying area at the same time so that the mixed airflow diffuses the short-cut fibers and the functional particulates from the top to the bottom which flow afterwards through an air guide device so that the airflow is able to smoothly bring them to a multilayer interlacing forming area beneath; (b) utilizing an air suction device under the multilayer interlacing forming area to adsorb the short-cut fibers and the functional particulates for sequentially piling up on a moving forming matrix so that the filter media is formed with a laminated structure having several layers of from sparse to dense, (c) heating the filter media and (d) cooling the filter media. The formed filter media consists of a protection layer at the bottom, an adsorptive layer in the middle and a flow equalizing layer at the top.
Abstract:
Solid materials have been developed to remove contaminating metals and organic compounds from aqueous media. The contaminants are removed by passing the aqueous phase through the solid materials which can be in molded, granular, or powder form. The solid materials adsorb the metals and the organics leaving a purified aqueous stream. The materials are sol-gel and or sol-gel and granulated activated carbon (GAC) mixtures. The species-specific adsorption occurs through specific chemical modifications of the solids tailored towards the contaminant(s). The contaminated solid materials can then be disposed of or the contaminant can be removed and the solids recycled.
Abstract:
The present invention relates to air filtering devices for removing malodor and ethylene from the air. Such devices are useful for example for storing and preserving fluid in closed compartments such as refrigerators. The air filtering device of the present invention is characterized in that a first filtering member is capable of removing malodors from the air and a second filtering members capable of removing ethylene from the air.
Abstract:
Inert magnesium support based on meerschaum, that has a larger volume of pores due to the elimination of an important part of its magnesium ions through an appropriate complexing agent, and composition to preserve perishable materials that is made up of the said support, with at least one active substance adsorbed on it and that acts with compounds present in the environment of the said materials, in a manner that favors their preservation, and also the procedure for preparing the said support and the said composition.
Abstract:
A dephosphorizing material containing iron and/or an iron-containing compound, a cementitious material, water, and a mixing agent for accelerating bleeding as the starting material, and having fine pores therein formed by solidifying the starting materials while bleeding not less than 2.0% by weight of the water contained in the starting materials to render the percent water absorption of not less than 10%; and a dephosphorizing method which includes bringing the dephosphorizing material into contact with a phosphorus-containing aqueous solution. This dephosphorizing material can effectively reduce the phosphorus concentration in sewages, rivers, or the like by fixing the phosphorus component on its surface. The dephosphorizing method is so simple that it can be effected merely by bringing the dephosphorizing material into contact with a phosphorus-containing aqueous solution, thus being capable of removing the phosphorus component effectively without necessity for any special controls.
Abstract:
High Capacity solid state cyanocobaltate complexes represented by the chemical formula:[(A).sub.a (R.sub.4 N).sub.b ].sup.z+.sub.x/z [Co(CN).sub.n ].sup.x- .multidot.pSwhere:A is alkali metal atom, alkaline earth metal atom, Zn, Cd or Hg atom;a is any number from 0 to 2.5each R is independently C.sub.1 -C.sub.1O substituted or unsubstituted alkyl, aryl or aralkyl; or a long chain hydrocarbon polymerb is any number from greater than zero to 3z is 1, 2 or 3;n is any number from 3 to 5;x is n-2;p is any number from greater than zero to 6; andS is a ligand which is capable of coordinating with [(A).sub.a (R.sub.4 N).sub.b 9 .sup.z+, Co or both.are capable of chemically binding oxygen to form novel oxygen adducts, thereby selectively removing oxygen from an oxygen-containing fluid stream. The bound oxygen may be recovered from the complexes by increasing the temperature or by reducing the partial pressure of O.sub.2 above the adduct.
Abstract translation:由[化学式为[(A)a(R4N)b] z + x / z [Co(CN)n] x-xpS表示的高容量固态氰钴酸盐络合物,其中:A为碱金属原子,碱土金属原子, Zn,Cd或Hg原子; a为0至2.5的任何数,每个R独立地为C 1 -C 10取代或未取代的烷基,芳基或芳烷基; 或长链烃聚合物b是大于0至3的任何数为1,2或3; n是从3到5的任何数字; x是n-2; p是从大于零到6的任何数字; 并且S是能够与[(A)a(R 4 N)b 9 z +,Co或两者配位的配体。 能够化学结合氧以形成新的氧加合物,从而从含氧流体物流中选择性地除去氧。 可以通过增加温度或通过降低加合物上方的O 2分压来从络合物中回收结合的氧。
Abstract:
The invention relates to compositions and methods for removing oil from water surfaces. The composition comprises a fine grained particulate material, such as expanded perlite or vermiculite, or sand, coated with an oleophilic/hydrophobic layer comprising sulfur, a metallic sulfate, an alkali metal nitrate, and burned hydrocarbon oil. The invention is particularly applicable to the treatment of oil spills on the surfaces of open bodies of water, such as lakes, rivers and oceans. The invention also relates to methods for preparing the oil removal composition, and for stripping and recycling the compositions after use.
Abstract:
Trialkyl arsines are removed from fluids, in particular gases, by contacting with a solid sorbent material containing at least one gold component (preferably AuCl and/or AuCl.sub.3 and/or NH.sub.4 AuCl.sub.4) and a support material (preferably alumina and/or silica). This process can be used for colorimetrically detecting the presence of arsines in gases.
Abstract:
Inert gas-permeable granular support materials impregnated with alkali ferrates wherein the ferrates are iron compounds having an oxidation state of +4, +5, or +6 are disclosed. When they are used as a granular filter material in combination with a tobacco product, hydrogen cyanide can be significantly reduced in the smoke obtained from the tobacco product. Activated carbon or alumina impregnated with sodium permanganate and a basic sodium compound may also be combined with the granular filter material.
Abstract:
Novel compositions are prepared by impregnating activated alumina with sodium permanganate and a basic sodium compound. When used as a granular filter material in combination with a tobacco product as in a smoking article comprising a cigarette in combination with the filter materials, nitrogen oxides can be significantly reduced in the smoke obtained from the tobacco product after the filter material is stored for long periods of time in the presence of the volatile components of the tobacco product and/or moisture. Activated carbon may also be combined with the composition.