摘要:
The invention is directed generally to a porous and durable ceramic filter monolith coated with one or more rare earth-containing compositions for removing contaminants from a fluid, particularly for removing one or more contaminants from water.
摘要:
The present invention provides a reactor containing catalysts that are situated on or within a cloth like material which is either in a filter cake-like shape or a spiral wound reactor configuration. One application is the desulfurization of synthesis gas.
摘要:
Systems and methods for treating a fluid with a body are disclosed. Various aspects involve treating a fluid with a porous body. In select embodiments, a body comprises ash particles, and the ash particles used to form the body may be selected based on their providing one or more desired properties for a given treatment. Various bodies provide for the reaction and/or removal of a substance in a fluid, often using a porous body comprised of ash particles. Computer-operable methods for matching a source material to an application are disclosed. Certain aspects feature a porous body comprised of ash particles, the ash particles have a particle size distribution and interparticle connectivity that creates a plurality of pores having a pore size distribution and pore connectivity, and the pore size distribution and pore connectivity are such that a first fluid may substantially penetrate the pores.
摘要:
It is an object of the present invention to make it possible to recover and recycle the rare metals such as gallium and indium safely from the III-V group compound semiconductors.A method for recovering the metals according to the present invention is characterized by recovering at least one metal selected from the group comprising gallium, indium and aluminum from the III-V group compound semiconductors or the semiconducting materials of them containing at least one element selected from the group comprising arsenic, antimony and selenium, and comprising the step of adsorbing the arsenic, antimony and selenium selectively to an adsorbent containing the rare-earth metal compound with the use of the adsorbent.
摘要:
Methods of disposing of sorbent bodies comprising at least one toxic element which is substantially prevented from leaching into the surrounding environment are disclosed. The at least one toxic element which is prevented from leaching into the surrounding environment may include, for example, mercury, selenium, or both. The methods of disposing of said sorbent bodies may include, for example, depositing the sorbent bodies in a landfill. Landfill-disposable sorbent bodies which are configured to substantially prevent leaching into the surrounding environment of at least one toxic element are also disclosed.
摘要:
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. The methods include mixing fly ash particles with a sulfide salt and a metal salt to form a metal sulfide on the outer surface of the fly ash particles.
摘要:
A deoxidizer for absorbing and removing oxygen from the surrounding atmosphere, comprising oxygen-deficient cerium oxide having a powder form with a specific surface area of 0.6 m2/g or less or the form of a formed body with a specific surface area of 3.0 m2/g or less. The deoxidizer reacts with oxygen even in a moisture-free atmosphere, does not trigger a metal detector nor heat up when microwaved in a microwave oven, and is prevented from abruptly reacting with oxygen and igniting even when brought into direct exposure to the air. The deoxidizer is therefore suited for oxygen removal, for example, inside food packages.
摘要:
Apparatus, process and article for treating an aqueous solution containing a chemical contaminant. The process includes contacting an aqueous solution containing a chemical contaminant with an aggregate composition comprising an insoluble rare earth-containing compound to form a solution depleted of chemical contaminants. The insoluble rare earth-containing compound can include one or more of cerium, lanthanum, or praseodymium. A suitable insoluble cerium-containing compound can be derived from a cerium carbonate, cerium oxalate and/or a cerium salt. The aggregate composition can include more than 10.01% by weight of the insoluble rare earth-containing compound, and in a particular embodiment consists essentially of one or more cerium oxides, and optionally a binder and/or flow aid. Although intended for a variety of fluid treatment applications, such applications specifically include removing or detoxifying chemical contaminants in water.
摘要:
A composition comprising a metal oxide and a promoter, wherein at least a portion of the promoter is present as a reduced valence promoter, and methods of preparing such composition are disclosed. The thus-obtained composition is employed in a desulfurization zone to remove sulfur from a hydrocarbon stream.
摘要:
In various embodiments, the present disclosure provides filtering compositions, their method of production, and methods for their use. In specific implementations, the filtering composition includes lanthanum and has a surface area of at least about 125 g/m2. In more specific examples, the filtering composition is free-flowing or has a moisture content between about 10 wt % about 30 wt %. Particular compositions include at least one of iron or magnesium. Some embodiments of the present disclosure provide filtering compositions that are resilient or leach-resistant.
摘要翻译:在各种实施方案中,本公开提供过滤组合物,其生产方法及其使用方法。 在具体实施方式中,过滤组合物包括镧,并且具有至少约125g / m 2的表面积。 在更具体的实例中,过滤组合物是自由流动的或具有约10重量%至约30重量%的水分含量。 特定的组合物包括铁或镁中的至少一种。 本公开的一些实施方案提供了具有弹性或耐水浸性的过滤组合物。