Magnetic Biofilm Carriers: The Use of Novel Magnetic Foam Glass Particles in Anaerobic Digestion of Sugar Beet Silage

Table 2

Chemical analysis of the sugar beet silage.

Parameter	Charge 1	Charge 2
pH (—)	3.41 ± 0.10	3.36 ± 0.06
Conductivity (mS cm^−1)	3.14 ± 3.10	1.35 ± 0.97
TS105^∘C (% FM)	18.09 ± 0.92	19.05 ± 0.40
VS550^∘C (% TS)	69.77 ± 4.72	79.16 ± 0.57
Acetic acid (g (kg FM)^−1)	10.77 ± 4.60	8.16 ± 0.58
Propionic acid (g (kg FM)^−1)	0.62 ± 0.47	0.15 ± 0.04
Sum of VFA C2–C6 (g (kg FM)^−1)	11.89 ± 5.41	8.40 ± 0.69
Ethanol (g (kg FM)^−1)	19.30 ± 8.78	8.40 ± 0.59
Propanol (g (kg FM)^−1)	1.14 ± 0.34	1.20 ± 0.35
Lactic acid (g (kg FM)^−1)	24.95 ± 6.08	20.61 ± 1.42
NH4-N (g (kg FM)^−1)	0.067 ± 0.006	0.075 ± 0.012
NKjel (g (kg FM)^−1)	1.359 ± 0.028	1.442 ± 0.125
Sugar content (g (kg FM)^−1)	37.95 ± 9.07	44.91 ± 4.05
COD (g (kg FM)^−1)	136.52 ± 15.91	167.51 ± 3.61