English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Zendy Plus

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Zendy Tools

Zendy Open

The hydrodynamic behaviour of a 60 l threephaseairlift bioreactor, of the concentric draught tubetype, with an enlarged degassing zone has been studied.Ca-alginate beads were used as the solid phase. Airflowrate (from 1.9 to 90.2 l/min), solids loading (0% to 40%(v/v)) and solids density (1016 and 1038 kg/m³) weremanipulated and their influence on solids and gas holdup,circulation and mixing times and in the interstitial liquidvelocity was determined. Riser and downcomer solidsholdup was found to decrease with the increase of airflowrate and to increase with solids loading and density. Onthe contrary, gas holdup in the riser and in the downcomerincreased with airflow rate and decreased with solidsloading and density. By increasing airflow rate, a decreasein circulation time was observed while the effects of solidsloading and density were negligible. Mixing time decreasedwith airflow rate, increased with solids density, inthe studied range, and presented a maximum for solidsloading of approximately 20% (v/v).Junta Nacional de Investigação Científica e Tecnológica (JNICT) Instituto de Biotecnologia e Química Fina (IBQF) - GGP XXI/BD/2937/9

Hydrodynamic studies in an airlift reactor with an enlarged degassing zone