And
the total lipid contents of C. vulgaris with the inoculum densities
from 100 to 250 mg L1 in cathode chamber were higher than
the other reports which was reported that total lipid content of
Chlorella ranged from 16.4% to 25.8% (Chan et al., 2010; Tang
et al., 2011). Furthermore, inoculated with 150 mg L1 algae at
0 h, the biomass productivity and total lipid content of C. vulgaris
were 207 mg L1 d1 and 31%, which were roughly 2.7 times and
1.2 times higher than control group (Fig. 5 and 150 b). This phenomenon
was consisted with the report by Pant et al. (2012)
who found that electric treatment was better for the growth of
Anabaena variabilis. The results indicated that C. vulgaris which
promoted food waste treatment and electricity production of
MFC, biomass productivity was also promoted by MFC stimulation.