Evenmore interesting results
appear when comparing the methane production from microalgae with
substrates commonly used in anaerobic digestion, such as sewage sludge,
which under similar conditions produced around 350mLCH4/gVS [19]. The
methane production from several substrates such as municipal solid
wastes, swine manure,maize silage and straw, etc., was also exceeded [4].
The theoretical methane production resulted in 533 ± 5 mLCH4/gVS
and 567 ± 1 mLCH4/gVS for C. kessleri and C. vulgaris respectively. The
biodegradability resulted in 65% and 66% for C. kessleri and C. vulgaris respectively,
higher than the values reported for other microalgae species