A bioreactor holds 1500 L of culture. At the end of the batch, every litre holds 3.2 g of the…
Contributed by StemPy LabTry it on paper first. A hint, the key idea and the worked solution are here when you need them.
A bioreactor holds L of culture. At the end of the batch, every litre holds g of the product. The downstream processing keeps per cent of the product.
- How many grams of product are in the culture at the end of the batch?
- How many grams are left after the downstream processing?
Need a reminder? The key ideaShow
A stirred-tank reactor mixes with a stirrer. A sparged stirred-tank reactor also bubbles sterile air. The parts are the agitator, the oxygen delivery, the foam control, the temperature control, the pH control and the sampling ports. Air flow volume air rate. Product of a batch volume product in each litre.
The worked solution
Have you tried it?
Work it out on paper first. It is fine to get stuck or make a mistake: that is how we learn. When you are ready, go through the solution one step at a time, and check each step against your own.
Given. L, g/L, per cent kept.
Plan. Product volume grams per litre. Then multiply by the share that is kept.
Step 1. (a) g.
Step 2. (b) g.
Answer: g; g.
Check. The product that is left is less than the product in the culture, as it must be.
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