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:
The invention is directed to a process to treat a hydrogen sulphide and carbon dioxide comprising gas comprising the following steps. (a) contacting the hydrogen sulphide and carbon dioxide comprising gas with an aqueous alkaline solution further comprising regenerated sulphide-oxidising bacteria under anaerobic conditions and at a temperature of between 35 and 48°C thereby obtaining a loaded aqueous solution. (b) contacting the loaded aqueous solution with an oxidant to regenerate the sulphide-oxidising bacteria to obtain a liquid effluent comprising regenerated sulphide-oxidising bacteria. (c) separating elemental sulphur from the loaded aqueous solution of step (a) and/or from the liquid effluent of step (b).
Abstract:
A process, system or apparatus for recovering C02 from a gas has an absorption section, cooling section, regeneration section and more than three heating sections and involves a split in the C02 rich stream from the first heating section. A solvent for recovering C02 from a gaseous mixture comprising a primary amino hindered alcohol or tertiary amine in combination with a derivative of piperazine with three or more amino groups as promoter and a carbonate buffer is also disclosed.
Abstract:
Multi-fiber, fiber optic cable assemblies may be configured so that the terminal ends of the cables have pre-assembled back-post assemblies that include pre-assembled ferrules, such as MPO ferrules that meet the requisite tolerances needed for fiber optic transmissions. To protect the pre-assembled components from damage prior to and during installation, pre-assembled components may be enclosed within a protective housing. The housing with pre-assembled components may be of a size smaller than fully assembled connectors so as to be sized to fit through a conduit. The remaining connector housing components for the multi-fiber connectors may be provided separately and may be configured to be attached to the back-post assembly after installation of the cable.
Abstract:
A process for capturing CO 2 includes contacting a CO 2 -containing gas with an absorption mixture optionally within a packed reactor. 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 CO 2 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 CO 2 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 CO 2 gas and water.
Abstract:
A highly alkalized humic and fulvic filter reagent for the removal of multiple contaminants from a gas is provided. The contaminants removed from the gas stream may include, but are not limited to, Carbon Dioxide, Sulfur Oxide, Nitrogen Oxides, Hydrogen Sulfides, radionuclides, mercaptans, ammonia, toxic metals, particulates, volatile vapors, and organics. The present invention further includes the disposal of the filter reagent by way of using the highly alkalized humic and fulvic filter for soil fertility, releasing the carbon dioxide from the filter reagent, converting the liquid filter reagent into a solid for disposal or for use as a contaminant removal filter for waters, wastes, and chemicals.
Abstract:
The disclosure is about a desiccant box comprising at least one wall defining an inside compartment containing a desiccant material. The box is designed so that : - at a first temperature value, the inside compartment is a substantially vapor tight closed compartment, - at a second temperature value superior to the first temperature value, at least a portion of the box is permeable to vapor so that vapor can penetrate into the inside compartment.
Abstract:
An off gas purification system provides superior results to other systems for removing volatile organic compounds from off gas, especially off gas from soil, groundwater, industrial processes, pipelines and storage tanks. Off gas is extracted, followed by compression and condensation. Compression and condensation produce an off gas that must be further treated to produce pollutant-free exhaust. A separation device cleans the influent gas/air by separating residual chemical vapor from the gas stream and returning that chemical vapor to the compression and condensation step. After removal of all detectable volatile organic compounds, the air stream may be further separated into segregated gases, and heated gas is used to thermally enhance the desorption or degradation of volatile organic compounds from the off gas source or a separation device. Methods of accomplishing the same are similarly provided, including unique business methods for conforming extraction and processing plans with current environmental regulations and compliance impact generation based on an evolved knowledge base.
Abstract:
A solid material is disclosed for reversibly adsorbing carbon dioxide. The material comprises a porous carrier material. Deposited on the carrier material is a salt that is capable of reacting with carbon dioxide. Optionally the solid material further contains a particulate, water-insoluble inorganic material. The material can be used in a process for recovering carbon dioxide from a carbon dioxide containing gas mixture. The gas mixture can be atmospheric air. The process comprises a temperature swing between an adsorption temperature (T1) and a desorption temperature (T2). The difference between (T2) and (T1) is less than 200 °C.