The present invention relates to an aquarium pressurized gas vessel for supplying an aquarium (12) with CO2 gas generated in the aquarium pressurized gas vessel (10), the aquarium pressurized gas vessel (10) having a receiving vessel (14) for receiving a nutrient substrate and a reactant interacting with the nutrient substrate such that the nutrient substrate and the reactant react with each other to generate CO2 gas; a closing device (16) for closing the receiving vessel (14) in a pressure-tight manner; a gas outflow device (18) for extracting CO2 gas from the aquarium pressurized gas vessel (10) for the aquarium (12), the CO2 gas having a gassing pressure (p_B) when flowing into the gas outflow device (18); a gas vessel pressure regulator (20) for adjusting a gas vessel pressure (p_G) which substantially corresponds to the gassing pressure (p_B). Further, the present invention relates to a CO2 gassing system (28) which includes the aforementioned aquarium pressurized gas vessel (10).

The disclosure provides a system to capture on-site greenhouse gas, such as carbon dioxide, from exhausts of greenhouse gas emission sources. The carbon dioxide is mixed with water to form a carbonated fracking fluid portion to combine with a proppant fracking fluid to form the fracking fluid for injection into a subsurface. The carbon dioxide in the carbonated fracking fluid portion is then sequestered into the formation through chemical attraction. The system can be an in-situ closed loop system in that the capture of the wellsite's carbon dioxide emissions and injection into the formation occur at the same wellsite or nearby wellsites in the same field to avoid long-term surface storage and transportations. The system can be modular, scalable, and transportable. The system can be installed as decentralized individual units coupled with each greenhouse gas generating equipment at the wellsite.

Containers for the production of a foamed sclerosant composition are provided. The containers includes a container body for foaming having one or more sidewalls extending between a top and a bottom of the container body, a foaming space being defined in an interior of the container body. Further, the foaming space contains a mixing component configured for rotating, particularly on the bottom of the container body, and including a magnetic part and a shape suitable for mixing. The container also includes a female coupling member for mating with a tip of a syringe, such that the syringe can be used for extracting the foamed sclerosant composition, and the container includes at least one opening which is covered by a gas-permeable barrier.

The invention relates to an ultrafine bubble (UFB) generator and a method for generating UFB. The invention also provides an ultrafine bubble-containing liquid and a production method of the liquid. An ultrafine bubble generator is prepared by combining (A) a sophorolipid containing acidic sophorolipid and lactonic sophorolipid in a ratio (mass ratio) of 78:22 to 100:0, (B) a free fatty acid or salt thereof, and (C) a gas generation component.

The object of the invention is to achieve a more efficient and complete mix between a liquid and gas by means of a system comprising 4 components in order to carry out a reaction or mixing process that improves the contact, and as a result, the reaction or mixing between a liquid and a gas, followed by a recovery stage of the gas that does not react during the reaction or formation of said mixture. This gas is recycled to the reaction or mixing zone, permitting the improvement of the efficiency and the cost of the reaction or mixing process between the liquid and the gas.

Provide is a carbonated cement slurry production system capable of efficiently fixing carbon dioxide in a cement slurry with a larger amount. A carbonated cement slurry production system for producing a carbonated cement slurry formed by carbonation of a cement slurry containing cement and water by a carbon dioxide-containing gas, the carbonated cement slurry production system including: a carbonation apparatus for bringing the cement slurry into contact with the carbon dioxide-containing gas; and carbon dioxide-containing gas supply apparatus for supplying the carbon dioxide-containing gas to the carbonation apparatus at a pressure larger than an atmospheric pressure, wherein the carbonation apparatus includes a carbonation tank for storing the cement slurry and the carbon dioxide-containing gas so that a gas phase formed of the carbon dioxide-containing gas is positioned above a liquid phase of the cement slurry.

Integrating direct air capture techniques in a novel manner with a novel process for using subterranean coal formations to filter CO.sub.2 from mixed gas streams thereby reducing the energy input and cost of removing CO.sub.2 from the atmosphere.

An integrated infuser/mixer pump system features a liquid inlet configured to receive a liquid drawn from a liquid source, a gas inlet configured to receive an inlet gas from a gas source, a pump and motor combination configured to received the liquid and provide pumped liquid, a gas/liquid mixture chamber configured to receive the pumped liquid and the inlet gas, and mix the liquid and the inlet gas into a gas-infused mixture, and a gas-infused mixture outlet configured to provide the gas-infused mixture; the gas inlet having a gas liquid mixing valve with a mixing orifice that has a mixing orifice size dimensioned to provide the inlet gas to the gas/liquid mixture chamber with an inlet gas volumetric flow rate in order to mix the pumped liquid and the inlet gas with a predetermined mixture ratio that depends on the mixing orifice size.

A method for preparing a foamed sclerosant composition. One method includes introducing a liquid sclerosant composition into a foaming space of an interior of a container, the foaming space containing a mixing component having a magnetic part. Rotation of the mixing component is achieved by generating for a first holding time a rotating magnetic field at a first speed and after the first holding time generating for a second holding time the rotating magnetic field at a second speed greater than the first speed.

A device for CO.sub.2 microbubble flooding comprises a microbubble generating device, a stirring and liquid storage device, an injection pump, a gas compressor, a gas-liquid mixer and a pressure stabilizing system, wherein the microbubble generating device adopts an integrally formed multi-layer cylindrical metal powder-sintered porous plate, and the diameters of microchannels on the porous plate are sequentially reduced from inside to outside. A solution containing additives in the storage device is stirred uniformly and then enters into a downhole gas injection base pipe through the gas-liquid mixer to be injected into a stratum, then a carbon dioxide gas compressed by the gas compressor is pumped into the downhole gas injection base pipe through the gas injection pump, and the gas generates microbubbles in situ when passing through the multi-layer porous device under the action of pressure difference.