Question

What can be a hazardous waste in the purification processes for organic solvents?

(a) Spent carbon

(b) Methane

(c) High water content

(d) Less water contents

This question was posed to me by my college director while I was bunking the class.

Question is taken from Treatment of Hazardous Wastes topic in portion Biotechnology for Solid Waste Management of Environmental Biotechnology

Answer 1

Right answer is (a) Spent carbon

To explain: Hazardous waste in the purification processes for organic solvents usually generate wastes like spent carbon, spent catalyst and filters with organic liquids in them. Methane, high water content, less water content, are the wastes generated in other treatment methods and not in the purification processes for organic solvents.