Question

You have 30;000 liters of a fermentation beer containing 66 mg/liter of an enzyme used to control coatings in the paper industry. You plan to extract this enzyme with an isoosmotic polyethylene glycol solution which does not dissolve significantly in the beer. The equilibrium for this extraction at the operating level of pH 6.6 is y = 103x where y and x are the concentrations in polyethylene glycol and beer, respectively. You plan to extract 99% of this enzyme with staged cross flow (not countercurrent) extraction. In such an extraction, you use pure enzyme-free extractant in each stage. How much extractant should you use to achieve your goal in four stages?

          You have 30;000 liters of a fermentation beer containing 66 mg/liter of
an enzyme used to control coatings in the paper industry. You plan to
extract this enzyme with an isoosmotic polyethylene glycol solution
which does not dissolve significantly in the beer. The equilibrium for
this extraction at the operating level of pH 6.6 is
y = 103x
where y and x are the concentrations in polyethylene glycol and beer,
respectively. You plan to extract 99% of this enzyme with staged cross
flow (not countercurrent) extraction. In such an extraction, you use
pure enzyme-free extractant in each stage. How much extractant should
you use to achieve your goal in four stages?

You have 30;000 liters of a fermentation beer containing 66 mg/liter of
an enzyme used to control coatings in the paper industry. You plan to
extract this enzyme with an isoosmotic polyethylene glycol solution
which does not dissolve significantly in the beer. The equilibrium for
this extraction at the operating level of pH 6.6 is
y = 103x
where y and x are the concentrations in polyethylene glycol and beer,
respectively. You plan to extract 99% of this enzyme with staged cross
flow (not countercurrent) extraction. In such an extraction, you use
pure enzyme-free extractant in each stage. How much extractant should
you use to achieve your goal in four stages?

Added by Katie W.

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