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Riboflavin (vitamin B2) is a nutrient that is used as a food additive (mainly in animal feed, but also in breakfast cereal). It can be produced by fermentation of glucose using strains of the yeast species Candida fermata, as described in US 5,164,303 (Heffner, Weaver, Yaris, & Burdzinski, 1992). Example IV in the patent gives the following yields in a 450 liter fed-batch fermentation tank operated at 30 °C and 40% of oxygen saturation. The glucose concentration was maintained above a critical level of 30 g/l by feeding additional 600 g/l glucose solution during the fermentation.
Design a reactor system to produce 40 metric tons per year of riboflavin using the strain given in the patent.
A human being (75 kg ) consumes about 6000 Kj of food per day. Assume that the food is all glucose and that overall reaction is- C6H12O6 +6O2 ------à 6CO2 +6H20 , Δ H= -2816 KJ
A gas stream is entering a separator at 1 mole/sec with mole fractions 15% A and 85% B. (Component 1 is A, component 2 is B.) At surface, the gas stream is 8 bar and 350K. Two streams exit the separator, one primarily of A (0.99 A1, 0.01 A2), and one..
Give a description of the product and its physical and chemical properties, including a chemical structure drawing - Identify at least one company the produces your product and where the production facilities are located (city, country).
prepare the design and evaluation of a new chemical manufacturing process.1 acetylation reactor2 separation of
What mass of ethylene glycol, HOCH2CH2OH, must be dissolved in 4.510 kg of water to result in a freezing point of 18.0°C? What is the boiling point of the same solution?
collect two journal articles related to process modeling/ simulation and review each article to summarize the contents. present the summary in paragraphs explaining the methodology, process and experimental procedure used in the study
a. How many design variables must be specified in order to calculate the output stream compositions and flow rates? b. How would you optimize these variables if the objective of the separator was to maximize recovery of condensable components into ..
Select suitable valve types for the following applications: a. Isolating a heat exchanger. b. Manual control of the water flow into a tank used for making up batches of sodium hydroxide solution.
describe the principles of a vapour adsorption refrigeration system and compare this to a vapour recompression system.
question 1a with the help of a labeled drawing discriminate between the first-stage biochemical oxygen demand bod and
In Uniformly varying load in simply supported beam, when we are calculating reaction at support we say centorid of triangle will be at 2x/3 from a to b. but, when calculating moment we say centroid will lies at x/3 from a to b, why?
Select any process/chemical engineering topic of your interest and in about 1000 words explain how modeling is involved in its study and development. regards Mohammed
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