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Degassing, also known as degasification, is the removal of dissolved gases from liquids, especially water or aqueous solutions. There are numerous methods for removing gases from liquids. Gases are removed for various reasons. Chemists remove gases from solvents when the compounds they are working on are possibly air- or oxygen-sensitive (air-free technique), or when bubble formation at solid-liquid interfaces becomes a problem. The formation of gas bubbles when a liquid is frozen can also be undesirable, necessitating degassing beforehand.

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  • Entgasung (de)
  • Desgasificación (es)
  • Degassing (en)
  • Degasifikasi (in)
  • Degasaggio (it)
  • Dégazage (chimie) (fr)
rdfs:comment
  • Entgasung bezeichnet die gesteuerte Entfernung von Gasen und anderer flüchtiger Substanzen wie Lösemittel oder Feuchtigkeit aus Flüssigkeiten und Festkörpern. Sie geschieht meist als Verfahrensschritt in dafür vorgesehenen Entgasungseinrichtungen. Das selbständige Entweichen von Gasen wird dagegen in der Regel meist als Ausgasen bezeichnet. Soll Feuchtigkeit entfernt werden, spricht man von Trocknung. (de)
  • Degassing, also known as degasification, is the removal of dissolved gases from liquids, especially water or aqueous solutions. There are numerous methods for removing gases from liquids. Gases are removed for various reasons. Chemists remove gases from solvents when the compounds they are working on are possibly air- or oxygen-sensitive (air-free technique), or when bubble formation at solid-liquid interfaces becomes a problem. The formation of gas bubbles when a liquid is frozen can also be undesirable, necessitating degassing beforehand. (en)
  • La desgasificación es el proceso de eliminación de un gas disuelto en un líquido, especialmente en agua o soluciones acuosas. Los gases son quitados por diversas razones; los químicos retiran gases de solventes cuando los compuestos con los que se trabaja son sensibles al aire o al oxígeno o cuando la formación de burbujas en la interfase sólido-líquido es un problema. La formación de burbujas de gas cuando un líquido se congela también puede ser un efecto indeseable, requiriendo la desgasificación previa del líquido. (es)
  • Le dégazage est l’élimination des gaz dissous des liquides, en particulier de l’eau, des solutions aqueuses ou organiques. Il existe de nombreuses méthodes possibles pour éliminer les gaz des liquides. (fr)
  • Degasifikasi atau pengawagasan (bahasa Inggris: degasification, degassing) adalah penghilangan gas terlarut dari cairan, terutama air atau larutan berair. Ada banyak metode untuk menghilangkan gas dari cairan. Gas dihilangkan karena berbagai alasan. Kimiawan menghilangkan gas dari pelarut ketika senyawa yang bekerja mungkin sensitif terhadap udara atau oksigen, atau ketika pembentukan gelembung pada antarmuka padat-cair menjadi masalah. Pembentukan gelembung gas ketika cairan dibekukan juga dapat tidak diinginkan yang mengharuskan pengawagasan terlebih dahulu. (in)
  • Nell'ingegneria chimica, il degasaggio è il procedimento che porta alla rimozione di gas disciolti nei liquidi (in genere acqua o soluzioni acquose). Il degasaggio può essere svolto per varie ragioni: ad esempio può essere effettuato quando si vuole ottenere un solvente privo di aria o ossigeno per evitare reazioni indesiderate con il soluto, oppure per evitare la formazione di bolle in un liquido che deve essere successivamente solidificato (la presenza delle bolle infatti incide sulle proprietà meccaniche del materiale). (it)
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  • Entgasung bezeichnet die gesteuerte Entfernung von Gasen und anderer flüchtiger Substanzen wie Lösemittel oder Feuchtigkeit aus Flüssigkeiten und Festkörpern. Sie geschieht meist als Verfahrensschritt in dafür vorgesehenen Entgasungseinrichtungen. Das selbständige Entweichen von Gasen wird dagegen in der Regel meist als Ausgasen bezeichnet. Soll Feuchtigkeit entfernt werden, spricht man von Trocknung. (de)
  • Degassing, also known as degasification, is the removal of dissolved gases from liquids, especially water or aqueous solutions. There are numerous methods for removing gases from liquids. Gases are removed for various reasons. Chemists remove gases from solvents when the compounds they are working on are possibly air- or oxygen-sensitive (air-free technique), or when bubble formation at solid-liquid interfaces becomes a problem. The formation of gas bubbles when a liquid is frozen can also be undesirable, necessitating degassing beforehand. (en)
  • La desgasificación es el proceso de eliminación de un gas disuelto en un líquido, especialmente en agua o soluciones acuosas. Los gases son quitados por diversas razones; los químicos retiran gases de solventes cuando los compuestos con los que se trabaja son sensibles al aire o al oxígeno o cuando la formación de burbujas en la interfase sólido-líquido es un problema. La formación de burbujas de gas cuando un líquido se congela también puede ser un efecto indeseable, requiriendo la desgasificación previa del líquido. (es)
  • Le dégazage est l’élimination des gaz dissous des liquides, en particulier de l’eau, des solutions aqueuses ou organiques. Il existe de nombreuses méthodes possibles pour éliminer les gaz des liquides. (fr)
  • Degasifikasi atau pengawagasan (bahasa Inggris: degasification, degassing) adalah penghilangan gas terlarut dari cairan, terutama air atau larutan berair. Ada banyak metode untuk menghilangkan gas dari cairan. Gas dihilangkan karena berbagai alasan. Kimiawan menghilangkan gas dari pelarut ketika senyawa yang bekerja mungkin sensitif terhadap udara atau oksigen, atau ketika pembentukan gelembung pada antarmuka padat-cair menjadi masalah. Pembentukan gelembung gas ketika cairan dibekukan juga dapat tidak diinginkan yang mengharuskan pengawagasan terlebih dahulu. (in)
  • Nell'ingegneria chimica, il degasaggio è il procedimento che porta alla rimozione di gas disciolti nei liquidi (in genere acqua o soluzioni acquose). Il degasaggio può essere svolto per varie ragioni: ad esempio può essere effettuato quando si vuole ottenere un solvente privo di aria o ossigeno per evitare reazioni indesiderate con il soluto, oppure per evitare la formazione di bolle in un liquido che deve essere successivamente solidificato (la presenza delle bolle infatti incide sulle proprietà meccaniche del materiale). Alcune metodiche possibili per effettuare l'operazione di degasaggio sono: * riduzione di pressione; * riscaldamento; * filtrazione a membrana; * sostituzione con gas inerte; * addizione di un riducente. (it)
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