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..

A rapid and continuous separator or equilibrator to separate a gas from a liquid includes a venturi and injector, a mixer and a free overfall stream to separate a gas from a liquid. The injector introduces a carrier medium into the liquid which provides a reservoir for the gas to diffuse into as the liquid and carrier make a single transit through the apparatus. The separator was developed to enable real-time estimation of methane concentrations in ground water during purging. Real-time monitoring allows evaluation of trends during water well purging, spatial trends between water wells, and temporal comparisons between sampling events. These trends may be a result of removal of stored casing water, pre-purge ambient borehole flow, formation physical and chemical heterogeneity, or vertical flow outside of well casing due to poor bentonite or cement seals. Real-time information in the field can help focus an investigation, aid in determining when to collect a sample, save money by limiting costs (e.g. analytical, sample transport and storage), and provide an immediate assessment of local methane concentrations, Four domestic water wells, one municipal water well, and one agricultural water well were sampled for traditional laboratory analysis and compared to the field separator or equilibrator results. Applying a paired t-test comparing the new separator or equilibrator method and traditional laboratory analysis yielded a p-value 0.383, suggesting no significant difference between the two methods for the current study. Additional field and laboratory-based experimentation and potential modification of this device are necessary to justify use beyond screening at this time. However, early separator or equilibrator use suggests promising results and applications.

A passive gas exchange transfer apparatus for exchanging carbon dioxide from a flue gas to a water supply is disclosed. The apparatus includes several upper rods and several lower rods to hold a membrane in place. The membrane provides increased surface area for the gas and the water to meet. The upper rods may be the source of the water supply, and the lower rods may be the source of the gas. The upper rods may disperse the water onto one side of the membrane, and the lower rods may disperse the gas onto the other side. The two may therefore meet at the surface created by the membrane as gravity draws the water downward, and convection draws the gas upward.

There is provided an ammonia gas removal system, including a fine bubble generation device which is configured to receive at least a portion of scrubber process water from a storage tank, and to generate fine bubbles containing carbon dioxide gas in the received scrubber process water, the storage tank being configured to store the scrubber process water to be provided to a gas scrubber, the gas scrubber being configured to spray the process water onto ammonia-containing gas.

A method is provided for producing fine-bubble water by resonance foaming and vacuum cavitation, and a device for manufacturing each of ultra-fine-bubble water of hydrogen gas having a reducing radical function, ultra-fine-bubble water of air and oxygen gas having an oxidizing radical function, ozone ultra-fine-bubble water having a sterilization function enabled by ozone, and fine-bubble water of nitrogen/carbon dioxide gas for increasing the ability to preserve the freshness of raw agricultural products, livestock products, and marine products.

A gas-liquid mixing control system includes a liquid supply unit, a liquid pressure regulating valve, a gas supply unit, a gas pressure regulating valve, a mixing tank, an output pipe, and a non-electric control flow regulator. The mixing tank communicates with said regulating valves; liquid and gas are mixed in the mixing tank to form mixed fluid. The first end and second end of output pipe communicate with the mixing tank and the machine respectively, making mixed fluid output from mixing tank to machine through the output pipe. The mixed fluid in first end and second end have third flow and fourth flow respectively. Said flow regulator communicates with the output pipe; the mixed fluid passing through said flow regulator has fifth flow. The first flow is not lower than at least one of the fourth and the fifth flow. Additionally, a control method for gas-liquid mixing is disclosed.

A control method of a carbonated water machine and a carbonated water machine are provided. The carbonated water machine includes a mixer, a liquid supply assembly, and a gas supply assembly. A mixing cavity is formed in the mixer, and the mixer is provided with a gas-liquid inlet and an outlet connected to the mixing cavity, a liquid outlet of the liquid supply assembly and a gas outlet of the gas supply assembly are both connected to the gas-liquid inlet, the control method includes: receiving a carbonated water production instruction; and turning on the liquid supply assembly to inject liquid into the mixing cavity, and turning on the gas supply assembly to inject carbon dioxide into the mixing cavity, so that the liquid and the carbon dioxide are mixed in the mixing cavity to form carbonated water. The present application can improve a convenience of carbonated water production.

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.

An apparatus, buffer solutions and a method are provided for pH control of in vitro dissolution tests used to monitor the drug release rate from solid unit dosage forms which are used to predict their in vivo effects or for quality control purposes. A method of preparing a continuous condition and a clear bicarbonate ion based solution for in vitro dissolution testing of pharmaceutical products is also provided.

An enclosure device is also provided for use in the provision of pH control and stabilization to a bicarbonate based solution used in the in vitro dissolution testing of pharmaceutical products.

Apparatus for introducing a gas into a main medium, comprising: a main conduit for guiding the main medium, a multitude of injection lines for guiding the gas, wherein each of the injection lines has a respective end section with a respective outlet opening situated within the main conduit, and wherein the end sections are oriented essentially parallel to each other and to the main conduit. With the apparatus a gas can be introduced in particular into waste water for obtaining a biologically activated sludge. Thereby, interaction between the gas and the waste water can be particularly pronounced due to a particularly large liquid-gas-interface caused by particularly extensive turbulences. Further, shear stress acting on particles in the activated sludge can be advantageously low, thus avoiding damage of the biological particles.