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UASB was developed in __________

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in Fermentation Technology by (72.1k points)
UASB was developed in __________

(a) America

(b) Netherlands

(c) London

(d) Japan

I had been asked this question in an interview.

The question is from Effluent topic in chapter Recovery and Purification of Fermentation Products, Effluent Treatment, Bioreactor Design Considerations of Fermentation Technology

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Correct choice is (b) Netherlands

To elaborate: Up-Flow Anaerobic Sludge Blankets (UASB) was a system developed in the Netherlands. In this system, very high-levels of biomass is retained in the reactor by flocculation. In this, no support media is added to the reactors and it acts as a fluidized-bed.

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