Abstract: Intensification techniques are described for enhancing biocatalytic CO2 absorption operations, and may include the use of a rotating packed bed, a rotating disc reactor, a zig-zag reactor or other reactors that utilize process intensification. Carbonic anhydrase can be deployed in the high intensity reactor free in solution, immobilized with respect to particles that flow with the liquid, and/or immobilized to internals, such as packing, that are fixed within the high intensity reactor.

Abstract: A process for capturing CO2 includes contacting a CO2-containing gas with an absorption mixture optionally within a packed reactor is provided. The absorption mixture includes a liquid solution and micro-particles. The micro-particles include a support material and biocatalyst supported by the support material and are sized and provided in a concentration such that the absorption mixture flows through the packed reactor and that the micro-particles are carried with the liquid solution to promote dissolution and transformation of CO2 into bicarbonate and hydrogen ions. The absorption mixture and micro-particles may be provided in an absorption reactor so as to be pumpable. Furthermore, a process for desorbing CO2 gas from an ion-rich aqueous mixture includes providing biocatalytic micro-particles and feeding the mixture to a desorption reactor, to promote transformation of the bicarbonate and hydrogen ions into CO2 gas and water.

Abstract: A method for producing an alkali metal iodide salt solution including combusting a liquid for combustion so as to combust a combustible component of the liquid for combustion; and subsequently cooling a resultant gas containing a decomposition product. The method comprises the steps of (a) providing a liquid containing (i) an alkali metal iodide salt, (ii) an inorganic-salt-forming substance capable of forming, at combustion, an inorganic salt containing an alkali metal and (iii) an organic compound; (b) adding to the liquid a precipitation solvent capable of depositing the inorganic-salt-forming substance; (c) removing from the liquid the inorganic-salt-forming substance precipitated in the step (b) so as to obtain the liquid for combustion; and (d) combusting the liquid for combustion and subsequently cooling the resultant gas containing a decomposition product.

Abstract: The present invention concerns a high vacuum in-situ refining method for high-purity and superhigh-purity materials and the apparatus thereof, characterized in heating the upper part and lower part of crucible separately using double-heating-wires diffusion furnace under vacuum, thereby forming the temperature profile which is high at upper part and low at lower part of crucible, or in reverse during different stages; then heating the crucible in two steps to remove impurities with high saturation vapor pressure and low saturation vapor pressure respectively in efficiency; and obtaining high-purity materials eventually. The whole procedure is isolated from atmosphere, reducing contamination upon stuff remarkably. The present invention could provide products with high-quality and high production capacity, which are stable in performance, therefore is reliable and free from contamination.

Abstract: 1,3,5-(2H2,4H2,6H2) tripropanediamine N,N,N?,N?,N?,N? hexamethyl is used to scavenge sulfur compounds from hydrocarbons. A novel method of making the triazine comprises autocondensing (CH3)2NCH2CH2CH2N?CH2.

Abstract: An abrasive precipitated calcium carbonate is provided that provides excellent cleaning properties without being excessively abrasive or damaging to gums or tooth surfaces. The abrasive, precipitated calcium carbonate has a primary particle size of about 1 ?m to about 4 ?m, and an aggregate size of about 3 ?m to about 10 ?m. Also disclosed is a method for forming calcium carbonate comprising the steps of: providing a reaction medium; introducing carbon dioxide and the calcium hydroxide slurry simultaneously into a reaction medium to form calcium carbonate while maintaining constant pH during calcium carbonate precipitation; and optionally drying the calcium carbonate slurry to form a dried calcium carbonate product. Also disclosed is a dentifrice containing the aforementioned abrasive, precipitated calcium, and one or more ingredients selected from the group consisting of humectants, thickening agents, binders, gums, stabilizing agents, antibacterial agents, fluorides, sweeteners, and surfactants.

Abstract: An improved method and apparatus for recovering metal values from Electric Arc Furnace dust, particularly zinc and iron values, by mixing EAF dust and carbonaceous fines to form a particulate mixture; heating the mixture at a sufficient temperature and for a sufficient time to reduce and release volatile metals and alkali metals in a flue gas; collecting the released metals, and removing the metal values from the process as product.

Abstract: Sodium alumino-silicates are produced by silicate/clay reactions under hydrothermal conditions with increased solids during processing while still producing structural materials characterized by low oil absorption values, high total pore volume and increased differential pore volumes. The products are useful as coating pigments for paper and paperboard, paper fillers, paint pigments and as reinforcing pigments for rubber.

Abstract: Sodium Aluminosilicates (SAMS) are produced by silicate/clay reactions under hydrothermal conditions, the SAMS being characterized by low oil absorption values and high total pore volumes. The SAMS products are useful as coating pigments for paper, paper fillers and paint pigments.

Abstract: A process for recovering Platinum Group metals from material comprising one or more Platinum Group metals and one or more Group IA metals supported on carbon comprises heating at a temperature between 700.degree. C. and 1150.degree. C. in a stream of an inert gas or vacuum then in a stream of carbon dioxide.

Abstract: A system for extracting sodium, particularly radioactive .sup.22 Na, from aluminum utilizes a monel exhaust system for exhausting sodium vapor emitted from a molten aluminum target, in a draft of helium gas. The aluminum target is heated until it is melted in a graphite support cup. The graphite support does not react with the sodium. Moreover, the graphite is understood to be permeable to the helium gas, its porosity being believed to provide the significant advantage that the graphite holder will not absorb much of the sodium vapor. The use of graphite avoids a disadvantageous monel-aluminum reaction whereby an alloy from which sodium cannot be distilled is formed. The resulting sodium vapor is precipitated in a monel exhaust tube which is subjected to temperature control. Sodium can be rinsed from the monel exhaust tube with water.

Abstract: A method of recovering alkaline chemicals from a material containing sodium or potassium compounds. The material is gasified by an external heat source after which the gas is rapidly cooled by arranging it to contact with cooled solid particles separated from the gas.

Abstract: A process for selective vaporization of oxides from recovered waste dust collected from a bag house. Pellets are formed from the waste dust and dried to permit charging in an oxidizing chamber wherein an oxidizing atmospheric is maintained. The chamber is heated to a temperature sufficient to vaporize lead oxide and, if present, also oxides of cadmium, potassium and sodium. The vapors are cooled and separated from furnace gas. The residual oxidized mass is cooled after removal from the oxidizing chamber and fed into a reduction chamber wherein a reducing atmosphere is maintained. The reduction chamber is heated to a temperature of between 1800 and 2000 degrees Fahrenheit to reduce zinc oxide and form zinc vapors which are cooled and separated from furnace gas. Lead oxide particles recovered from the oxidizing process are reduced to lead.

Abstract: A fully integrated process is provided for the recovery of valuable components from waste materials generated in electrolytic aluminum reduction systems. The waste materials, such as spent pot linings, channel and trench cleanings, floor sweepings and spent alumina from offgas purifying dry scrubbers, are combined, then pyrohydrolyzed at elevated temperature. Fluoridic values, such as NaF and HF can be recovered from the offgas generated by pyrohydrolysis, while alumina and Na.sub.2 O values, or if desired, sodium aluminate, is reclaimed from the solid residue of pyrohydrolysis.The fluoridic values from the pyrohydrolysis offgas can be used for the manufacture of both electrolytes for aluminum reduction cells and also for the production of anhydrous HF. The alumina from the pyrohydrolysis residue can be reclaimed by a Bayer process-type leach with a caustic solution and the recovered high purity alumina utilized, for example, as reduction cell feed and/or for scrubbing reduction cell offgases.