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Uniform reuse

Life Science

Beer can be brewed from industrial wastewater.

Now a research team from Singapore is using the wastewater from soybean production to create sustainable feed for fish farming. Usually, feed is made from wild-caught fish (sometimes very wild-caught indeed!).

The team cultivated a single-cell protein in a bioreactor over four months at 30°C using the protein-rich wastewater and the micro-organisms contained within.

A group of young Asian seabass was given an even mix of traditional fishmeal and the new protein over a period of 24 days. For comparison purposes, a different group was reared on standard fishmeal.

Both groups developed as expected, but the sizes of the protein-group were more uniform.

Interestingly enough, fish sludge can be used as plant fertiliser.

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