Microbial Fuel Cells for Direct Electrical Energy Recovery from Urban Wastewaters

Table 1

SW2 synthetic wastewater composition. Compounds’ mixtures were dry-stored in 50 mL sterile Falcon tubes until use, when they were dissolved into the proper amount of distilled water and then fed to the cell. Trace metals solution was added too (1 mL/L). Measured pH of the final solution was equal to 6.8±0.6; conductivity was 1025.5±128 μS/cm.

Compounds	(mg/L)	COD (mg/L)	𝑁 (mg/L)	𝑃 (mg/L)
Urea	69.2	17.5	32.3	0.0
NH4Cl	9.6	0.0	2.7	0.0
CH3COONa	59.8	47.3	0.0	0.0
Peptone	13.1	15.7	0.5	0.0
KH2PO4	17.6	0.0	0.0	2.4
FeSO4⋅7H2O	4.4	0.0	0.0	0.0
Sucrose	92.0	103.3	0.0	0.0
Milk powder	87.6	106.8	5.2	0.9
Yeast	39.4	39.4	4.7	0.0
MnSO4⋅H2O	0.1	0.0	0.0	0.0
NiSO4⋅6H2O	0.3	0.0	0.0	0.0
ZnCl2	0.2	0.0	0.0	0.0
Total	—	330.0	45.4	3.2