Download e-book for iPad: Biochemical Engineering and Biotechnology by Ghasem Najafpour

By Ghasem Najafpour

ISBN-10: 0444528458

ISBN-13: 9780444528452

Vast program of bioprocesses has generated a diffusion in biotechnological wisdom, generated through the appliance of biochemical engineering to biotechnology. Microorganisms produce alcohols and acetone which are utilized in business strategies. the information concerning commercial microbiology has been revolutionized by means of the facility of genetically engineered cells to make many new items. Genetic engineering and gene mounting has been built to augment commercial fermentation. finally, those bioprocesses became a brand new means of constructing advertisement items. Biochemical Engineering and Biotechnology demonstrates the appliance of organic sciences in engineering with theoretical and sensible points to augment knowing of data during this box. The publication adopts a realistic process, exhibiting comparable case reviews with unique study information. it's a fantastic textual content ebook for faculty and college classes, which courses scholars in the course of the lectures in a transparent and well-illustrated demeanour. · Demonstrates the applying of organic sciences in engineering with theoretical and sensible points. · distinctive functional strategy, utilizing case stories, exact experiments, unique study facts and difficulties and attainable options. · offers specified experiments with uncomplicated layout equations and the necessary calculations.

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8 * CAL CAL CPR kLa OUR RQ x xmax qO2 NOMENCLATURE Equilibrium concentration of A at the liquid phase, mmol/g Concentration of A at liquid phase, mmol/g Carbon dioxide production rate, mmol/gиs Mass transfer coefficient at liquid phase, sϪ1 Oxygen uptake rate, mmol/gиs Respiration quotient, mmol CO2/mmol O2 Biomass concentration, mg/l The maximum biomass production, sϪ1 Specific oxygen uptake rate, sϪ1 REFERENCES 1. C. L. L. Dunnill, P. E. , “Fermentation and Enzyme Technology”. John Wiley & Sons, New York, 1979.

5 ppm. 7 ppm at 40 °C. The above data show that in case of high oxygen demand for SCP production, oxygen drastically depletes in 12–24 hours of incubation. Therefore pure oxygen is commonly used to enhance oxygen availability in the fermentation media. 2 MEASUREMENT OF DISSOLVED OXYGEN CONCENTRATIONS The concentration of dissolved oxygen in a fermenter is normally measured with a dissolved oxygen electrode, known as a DO probe. qxd 10/27/2006 10:49 AM Page 15 DISSOLVED OXYGEN MEASUREMENT AND MIXING 15 electrodes and polarographic electrodes.

3. 4. qxd Substrate Product Cell 40 30 20 10 0 0 4 8 12 Length of reactor, m 16 20 FIG. 4. Substrate, product and cell concentration versus length of plug flow bioreactor. 19) Bioreactor with the assumption of tank diameter is equal to the height of the liquid (Dt ϭ H). qxd 10/27/2006 40 10:47 AM Page 40 BIOCHEMICAL ENGINEERING AND BIOTECHNOLOGY Dilution rate is defined as the number of tank volume pass through per unit time, D ϭ F/V. The residence time is defined as the time required for one unit volume of reactor to be replaced by the flow rate, t ϭ V/n.

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Biochemical Engineering and Biotechnology by Ghasem Najafpour


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