Helping the industry produce fresh water while keeping operations reliable and sustainable through membrane degassing
The DuPont™ Ligasep™ membrane degassing product line utilizes a PMP (polymethylpentene) hollow fiber membrane which is used to remove dissolved gases, such as oxygen and carbon dioxide, from water to prevent oxidation and reduce the ionic load on downstream processing equipment. Control of these gasses is an integral part of producing high quality water used in the power generation, industrial manufacturing and semiconductor industries. These modules can be installed in series within the same water treatment system, ensuring efficient degasification and achieve ppb levels (parts-per-billion) of dissolved gasses for a wide range of flow rates in water treatment applications.
The Ligasep™ membrane degassing product advantages:
- Membrane barrier prevents contaminants on the gas side to transfer to water side.
- Surrounding air quality does not affect performance.
- Membrane technology maintains performance under variable flow conditions.
- High packing density translates into smaller footprint and modular design.
Learn more about Ligasep™ Degassing Modules
Membrane degasification technology brings the gas and liquid phases in contact with each other across a gas permeable membrane. The membrane does not allow water to permeate through the membrane while it will readily allow gasses through. This creates a large contact area that maximizes the gas removal efficiency. The gas concentrations and operating pressure on one side of the membrane are adjusted to ensure an efficient gas removal from the water.
Ligasep™ Membrane Degassing Technology:
- Utilizes a hollow fiber membrane with a skin layer that reduces the passage of water vapor through the membrane. Low water vapor passage across the membrane allows blowers and other vacuum pump technologies to be used on the gas side of the membrane.
- The membrane offers a barrier that prevents mixing between the gas and the liquid, hence avoiding any cross-contamination between both fluids.
- Provides a stable and efficient contact area, allowing the modules to achieve low dissolved gas levels at the outlet.
- Immediate transfer of gas allows for a rapid start-up.
- Break tanks are not required, which eliminates the need for a booster pump, reducing energy consumption.
- Inline installation ensures continuous operation and improving process reliability.
- CO2 removal in DI water systems (Industrial Utility Water)
- Between cationic-anionic Ion Exchange beds
- Upstream Ion Exchange Mixed Bed or EDI
- pH neutralization without chemicals
- O2 removal
- Boiler feedwater to prevent corrosion
- Ultra Pure Water for microelectronics
- Heavy industries (petrochemical, refineries, fertilizers)
- Light industries
- Power generation
- Microelectronics and semiconductor industry
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How they work?
Membrane degasification technology brings the gas and liquid phases in contact with each other across a gas permeable membrane. The membrane does not allow water to permeate through the membrane while it will readily allow gasses through. This creates a large contact area that maximizes the gas removal efficiency. The gas concentrations and operating pressure on one side of the membrane are adjusted to ensure an efficient gas removal from the water.
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Features
Ligasep™ Membrane Degassing Technology:
- Utilizes a hollow fiber membrane with a skin layer that reduces the passage of water vapor through the membrane. Low water vapor passage across the membrane allows blowers and other vacuum pump technologies to be used on the gas side of the membrane.
- The membrane offers a barrier that prevents mixing between the gas and the liquid, hence avoiding any cross-contamination between both fluids.
- Provides a stable and efficient contact area, allowing the modules to achieve low dissolved gas levels at the outlet.
- Immediate transfer of gas allows for a rapid start-up.
- Break tanks are not required, which eliminates the need for a booster pump, reducing energy consumption.
- Inline installation ensures continuous operation and improving process reliability.
- Utilizes a hollow fiber membrane with a skin layer that reduces the passage of water vapor through the membrane. Low water vapor passage across the membrane allows blowers and other vacuum pump technologies to be used on the gas side of the membrane.
-
Applications
- CO2 removal in DI water systems (Industrial Utility Water)
- Between cationic-anionic Ion Exchange beds
- Upstream Ion Exchange Mixed Bed or EDI
- pH neutralization without chemicals
- O2 removal
- Boiler feedwater to prevent corrosion
- Ultra Pure Water for microelectronics
- CO2 removal in DI water systems (Industrial Utility Water)
-
Industries
- Heavy industries (petrochemical, refineries, fertilizers)
- Light industries
- Power generation
- Microelectronics and semiconductor industry
Find Ligasep™ products
View a list of our industry-leading Ligasep™ products, including product data sheets.
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