1.

In what PH range does anaerobic digestion occurs at best?

A. 6.8 – 8.0
B. 0 – 5.0
C. 2.3 – 4.5
D. 3.5 – 7.2
Answer» B. 0 ‚Äö√Ñ√∂‚àö√ë‚àö¬® 5.0


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