Co-Products Flashcards

1
Q

Co-products

A

Useful or sellable materials produced alongside beer.
-Spent grain
-CO2
-Spent yeast

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2
Q

Spent grains for animal feed

A

Great animal feed because of cellulose, sugars, proteins, and lipid content. Must comply with HACCP and local regulation.

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3
Q

Spent grains as energy production

A

Burning dried grains to produce heat/electricity. Grains must first be dried, then burned in a boiler to produce steam, drive a generator, or feed into local supply network.

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4
Q

Spent grains as biogas production

A

Microbes breakdown cellulose, hemicellulose, and sugars into methane gas in an anaerobic digestion plant.

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5
Q

Spent grain for bioethanol production

A

Cellulose and hemicellulose pre-treated and fed into bioreactor full of fungus, which further break down cellulose into sugars which are fed to yeast, which gives us ethanol.

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6
Q

CO2 collection and recovery

A

CO2 leaving fermenter is passed through washer, compressed, deodorized using activated carbon, condensed/liquified, and stored.

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7
Q

Spent yeast as animal feed

A

First yeast must be killed with heat treatment. Can be sold directly as a slurry, or dried in a heated drum.

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