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Which of following physical methods cannot be used for harvesting algal biomass of waste water?

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in Environmental Biotechnology by (64.7k points)
Which of following physical methods cannot be used for harvesting algal biomass of waste water?

(a) Sedimentation

(b) Floatation

(c) Filtration

(d) Chlorination

The question was asked at a job interview.

My doubt is from Microalgal Culture topic in chapter Biotechnological Approaches of Microalgal Culture of Environmental Biotechnology

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Best answer
The correct answer is (d) Chlorination

For explanation I would say: Chlorination is a chemical process used for treatment of water whereas sedimentation, floatation, filtration are physical methods used for waste water treatment. It can also be used for harvesting algal biomass of waste water.

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