کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
160153 | 457064 | 2005 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Measurement of local gas holdup in bubble columns via a non-isokinetic withdrawal method
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
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چکیده انگلیسی
An inexpensive method was developed to measure local gas holdup based on withdrawal of the air–liquid dispersion in bioreactors under non-isokinetic conditions. The method was tested with several suction probe designs and withdrawal pressures using coalescing and non-coalescing model media as well as during yeast fermentations. Simultaneously, gas holdup was measured manometrically. With a straight end probe and vacuum pressure of 3 kPa, local gas holdup measurements presented a relative error <6%<6% compared to the manometric method, independently of the media composition. This method was used to characterize local gas holdup in a bubble column. Two new parameters are proposed to characterize non-gassed volume and gas holdup homogeneity.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Engineering Science - Volume 60, Issue 24, December 2005, Pages 6929–6938
Journal: Chemical Engineering Science - Volume 60, Issue 24, December 2005, Pages 6929–6938
نویسندگان
Sergio García-Salas, Carlos Orozco-Alvarez, R. Michael Porter, Frederic Thalasso,