Degassing Process
Degassing Process - Related Videos
08:18
Degassing Liquids with Freeze-Pump-Thaw Cycling
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2023
Source: Laboratory of Dr. Neil Branda — Simon Fraser University Degassing refers to the process by which dissolved gases are removed from a liquid. The presence of dissolved gases such as oxygen or carbon dioxide can impede chemical reactions that utilize sensitive reagents, interfere with spectroscopic measurements, or can induce unwanted bubble formation. A number of different techniques are available for degassing liquids; some of these include heating, ultrasonic agitation, chemical...
10:32
Fabrication Process of Silicone-based Dielectric Elastomer Actuators
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Cited by 102 •
2016
This manuscript shows the fabrication process for the manufacture of dielectric elastomer soft actuators based on silicone membranes. The three key stages of production are presented in detail: blade casting of thin silicone membranes; pad printing of compliant electrodes; and the assembly of all the components.
01:30
Processes at Electrodes
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2026
The electrode interacts with ions in the electrolyte solution at its interface. The rate of oxidation and reduction depends on the speed at which electrons can transfer through this interface. As ions attach to or leave the electrode surface, the electrode acquires a charge, and an electrical potential forms across the interface, making the process more difficult to reach equilibrium. The charge on the electrode affects the local ion concentrations in the solution, though thermal motion...
01:21
Isothermal Processes
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2025
A thermodynamic process that occurs at constant temperature is called an isothermal process. Heat slowly flows into the system or out of the system to maintain thermal equilibrium. Processes involving phase changes like water evaporation into steam or freezing water into ice at a constant temperature are examples of Isothermal Processes. An ideal gas can also undergo isothermal expansion or compression. For example, consider 1 mole of an ideal gas inside an isolated cylinder at initial volume V...
01:20
Work Done in an Adiabatic Process
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2025
Consider the adiabatic compression of an ideal gas in the cylinder of an automobile diesel engine. The gasoline vapor is injected into the cylinder of an automobile engine when the piston is in its expanded position. The temperature, pressure, and volume of the resulting gas-air mixture are 20 °C, 1.00 x 105 N/m2, and 240 cm3 , respectively. The mixture is then compressed adiabatically to a volume of 40 cm3. Note that, in the actual operation of an automobile engine, the compression is not...
FAQs
Reduced pressure lowers the pressure surrounding a liquid, making dissolved gases less soluble. Oxygen and carbon dioxide can then leave the liquid and form bubbles that escape from the material. In biological solutions, this mechanism helps reduce trapped air before pipetting, microscopy, flow-based work, or microfluidic measurements, where bubbles can disrupt handling and observations.
Heating promotes gas release by lowering the amount of gas that remains dissolved in a liquid. As solubility decreases, trapped oxygen or carbon dioxide can escape more readily. This approach is one of several available mechanisms, alongside vacuum and gas displacement, and its use is relevant when the goal is to reduce dissolved gases in media, buffers, or experimental solutions.
Gas displacement changes the surrounding gas environment so that dissolved gases can leave the liquid, whereas reduced pressure directly lowers the pressure acting on the solution. Both approaches can reduce trapped gases, but they provide different ways to influence gas release. In biological experiments, the choice can be relevant when controlling oxygen exposure is important for anaerobic or oxygen-sensitive organisms.
Bubbles can interfere with pipetting, microscopy, flow systems, and microfluidic measurements, creating physical disturbances that reduce experimental consistency. Dissolved gases also influence the chemical and physical behavior of solutions, particularly when oxygen levels affect biological systems. Degassing therefore helps limit gas-related artifacts and supports more reproducible handling and measurement in laboratory workflows.
The method should match the intended gas-control requirement and the material being treated. Reduced pressure, heating, and gas displacement offer different ways to lower dissolved gases or alter oxygen exposure. Researchers may therefore select an approach based on whether the priority is removing trapped air from a solution, controlling oxygen levels, or improving compatibility with a particular experimental system.
Degassing is useful when bubbles or dissolved gases could affect cell culture, biochemical assays, or laboratory instrumentation. It can improve solution handling and reduce artifacts in measurements, while controlled oxygen levels support studies involving anaerobic or oxygen-sensitive organisms. The process is also relevant to microscopy, flow systems, and microfluidic experiments that are easily disrupted by trapped air.
Removing trapped air from culture media, buffers, and experimental solutions can make pipetting and other handling steps more consistent. Lowering unwanted gases also reduces artifacts that might complicate biochemical measurements or cell-culture procedures. When oxygen must be controlled, the same general approach can support experiments focused on anaerobic or oxygen-sensitive organisms and their responses to defined conditions.
In flow systems and microfluidic devices, trapped bubbles can interrupt liquid movement and interfere with measurements or imaging. Treating the working solution to reduce dissolved gases helps limit bubble formation during use. This improves the reliability of fluid handling and observation, making degassing a practical preparation step when biological experiments depend on stable flow or unobstructed microscopy.