{"id":4010,"date":"2016-05-02T14:44:24","date_gmt":"2016-05-02T12:44:24","guid":{"rendered":"http:\/\/mirror.s-vt.net\/begasen\/"},"modified":"2026-10-26T17:29:19","modified_gmt":"2026-10-26T16:29:19","slug":"aeration","status":"publish","type":"page","link":"https:\/\/www.s-vt.net\/en\/aeration\/","title":{"rendered":"Aeration"},"content":{"rendered":"

Aeration means introducing gases into a liquid. It serves two purposes: replacing a gas that is present or dissolved with another one, or supplying gas so that aerobic fermentation or gas-liquid reactions can take place. A large interface between liquid and gas is crucial.<\/p>

<\/i>Small gas bubbles<\/strong>A large interface between gas and liquid.<\/span><\/div>
<\/i>Gentle<\/strong>Cell cultures remain undamaged.<\/span><\/div>
<\/i>Little foam<\/strong>Exhaust air filters stay clear.<\/span><\/div><\/div>

Side effects of aeration<\/h2>

Introduced gas can form foam, separate mixtures and create shear forces through rising air bubbles. As a result, the product can separate or important ingredients can be destroyed. Therefore, the geometry of the agitator is especially important, and agitation<\/a> must be planned as part of the process.<\/p>

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Decoupling gas supply and mixing<\/h3>

Porous feed nozzles create the small gas bubbles. The agitator then only mixes the liquid.<\/p><\/div>

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One fast agitator<\/h3>

For simple processes, a fast-running agitator can do both.<\/p><\/div><\/div>

The gas flow should break up into as many small bubbles as possible. In fermentation, however, the shear energy must not destroy the cell cultures.<\/p>

Applications<\/h2>