Question

You have been asked to determine the impacts of the Crafty Moon Possum brewery in North...

You have been asked to determine the impacts of the Crafty Moon Possum brewery in North Melbourne, the owners pride themselves on good craft beer and sustainable practices. They have a beer bottling plant and use steam generated from a waste timber boiler to clean and provide heat to their process.

a) What are the most likely emissions and discharges from a brewery, how many can you list?

Each time a beer bottle is filled, a small amount of ethanol is discharged to the environment via a stack.

The brewery is expected to be able to bottle 4,500 beers an hour.

b) Calculate the concentration of ethanol in the stack in g/m3

Information that you will need

· A beer is 375mL

· Stack velocity 7m/s

· Stack diameter 0.3m

· Emissions of ethanol from production is 0.066 kg of ethanol / kL of beer

Homework Answers

Answer #1

Likely emissions and discharges from brewery are ethanol, carbon di-oxide, brewary effluent with organic materials from process activities, spent grains, resulting yeast from fermentation, odor due to wort boiling, dust resulting from malt, sugar, grains etc.

Concentration of ethanol in stack is calculated by the formula, emission rate = flow rate X concentration. Detailed calculation is shown below:

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