Chemical Process
Tall oil obtained as a by-product from the black liquor recovery is

Composed mainly of rosin & fatty acids
All of these
Used in the manufacture of greases, emulsions & soaps
A black, sticky & viscous liquid

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

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

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