1. Waste Production & P2 Application
Brewing Industry
Waste Production
&
P2 Application

2. Beer Making Process: Waste Production
Waste produced
1. Malting
2. Milling
3. Mashing
4. Lautering
5. Boiling (brewing)
6. Whirlpool (removing hops) + Wort cooling

3. Using “-” for “no waste produced “
Process
Waste produced
7. Fermenting
8. Maturing/
Conditioning/
Aging
9. Filtering
10. Bottling & Pasteurization
Using “-” for “no waste produced “

4. Waste Production
Barley grains

5. Waste Production
Spent grains
Spent hops

6. Beer Making Process: P2 Application
Waste produced
P2 application
1. Malting
Discarded grains
2. Milling
Spill grist
3. Mashing
- (no waste produced )
4. Lautering
Spent grains
5. Boiling (brewing) -
6. Whirlpool (remove hops) +
Wort cooling
Spent hops
Cooling water

7. Process
Waste produced
P2 application
7. Fermenting
Excess yeast
8. Maturing/
Conditioning/
Aging
Spill beer
9. Filtering
Spent yeast
10. Bottling & Pasteurization
Broken / rejected bottles and/or cans
Waste Cardboard

8. Beer Making Process: Waste production & P2 Application
Waste produced
P2 application
1. Malting
Discarded grains (grains of less than 2.2 mm in diameter, removed when grain is cleaned)
Store at low temperature and low moisture (improve operation, B1)
Chicken feed (reuse, D1)
2. Milling
Spill grist
3. Mashing
- (no waste produced )
4. Lautering
Spent grain (accounting to about 85% of the waste produced)
Animal feed (concentration waste (dry by evaporation)/ reuse (wet)) (C2/D1)
Making compose (recycle) (D2)
5. Boiling (brewing) -
6. Whirlpool (remove hops) +
Wort cooling
Spent hops
Cooling water
Animal feed (adding to spent grain)
Making compose
Reuse of wort cooling water as the process water for the next mash (D1)=reducing energy use

9. Process Waste produced P2 application
7. Fermenting
Excess yeasts
Use in the next fermentation (reuse)
8. Maturing/
Conditioning
Spill beer
Adding to spent grain that is being dried through evaporation and then use as animal feed (D1)
9. Filtering
Spent yeasts
Animal feed
Making compose
10. Bottling & Pasteurization
Broken / rejected bottles and/or cans
Waste Cardboard
Making new bottles/cans (recycle) (D2)
Making new boxes (recycle)

10. spent grain has a lot of fiber and is high in protein.

11. Cows eating spent yeast
Yeast Contains Beneficial Protein and
Thiamine (Vitamin B1)

12. Spent grains have a ton of nitrogen and organic matter, which are just the stuff plants need to grow.