Chemical Process
Penicillin is separated from fermented broth by

Extraction with amyl or butyl acetate
Evaporation in calendria
Extractive distillation
Ternery azeotropic distillation

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Chemical Process
In the manufacture of H₂SO₄, vanadium catalyst as compared to platinum catalyst

All of these
Handles lower SO₂ content gas (7 -10% SO₂), thus increasing the capital cost of the plant
Has a longer life and is not poisoned by arsenic
Gives higher conversion efficiency

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