Q: Assume a rough estimate of MSW composition is as follows: % by weightMoisture content (%)Paper (assume dry mass all cellulose, C6H10O5)408%Glass10-Steel10-Aluminum10-Food waste (assume dry mass all sugar, C6H12O6)3080% a) If 20,000 metric tonnes of this waste is for anaerobic digestion, how much methane gas would theoretically be produced?b) If 20,000 metric tonnes of this waste is for aerobic composting. How much oxygen would theoretically be demanded?

Question
Asked Oct 29, 2019
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Q: Assume a rough estimate of MSW composition is as follows:

 

% by weight

Moisture content (%)

Paper (assume dry mass all cellulose, C6H10O5)

40

8%

Glass

10

-

Steel

10

-

Aluminum

10

-

Food waste (assume dry mass all sugar, C6H12O6)

30

80%

 

a) If 20,000 metric tonnes of this waste is for anaerobic digestion, how much methane gas would theoretically be produced?

b) If 20,000 metric tonnes of this waste is for aerobic composting. How much oxygen would theoretically be demanded?

 

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Expert Answer

Step 1

In anaerobic digestion, starch, sugars, and cellulose produce equal amount of methane and carbon dioxide. Glass and steel do not produce any significant amo...

a)
Acceli to uatin
Paper wayht
fo 20,000 metric tonnes d ste
to Cmojs to)
Ppes
8000 melnic tanne
2 000p x io
Loe
Dweyh per 8000-(Roasx
mastore
Ro00-640
7360 meini tonnes
tcal wte 30/ maistur toy
2o o00 memc lones
food waste6000
tool wauke Oo00-Gobo rRo
Dy wes
1ob
Gono-4800
12 ob ymalnc lone
Melute prodered is San frm eah canby dale
Papn waste prodics 1360/2 368
1200/
3Pead waste prndaces
42to tonne
Totl meliau prodo ctd
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a) Acceli to uatin Paper wayht fo 20,000 metric tonnes d ste to Cmojs to) Ppes 8000 melnic tanne 2 000p x io Loe Dweyh per 8000-(Roasx mastore Ro00-640 7360 meini tonnes tcal wte 30/ maistur toy 2o o00 memc lones food waste6000 tool wauke Oo00-Gobo rRo Dy wes 1ob Gono-4800 12 ob ymalnc lone Melute prodered is San frm eah canby dale Papn waste prodics 1360/2 368 1200/ 3Pead waste prndaces 42to tonne Totl meliau prodo ctd

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