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

Table 3

Methane rate, methane yield, and methane content of methanogenic reactors with (MR) and without (CR) magnetic foam glass particles during periods of constant OLR and HRT.

Reactor days (—)	HRT (d)	OLR; (g VScorr L^−1 d^−1)	Methane rate; (L L^−1 d^−1)		Methane yield (L (g VScorr)^−1)		Methane content (%)
			MR	CR	MR	CR	MR	CR
35–75 (start-up)	40	4.15 ± 0.18	1.63 ± 0.16	1.60 ± 0.18	0.393 ± 0.037	0.385 ± 0.045	56.3 ± 1.0	55.9 ± 1.5
125–137	32	1.51 ± 0.04	0.49 ± 0.04	0.47 ± 0.04	0.324 ± 0.025	0.310 ± 0.024	53.5 ± 1.9	52.8 ± 1.2
138–151	23	2.02 ± 0.10	0.65 ± 0.05	0.64 ± 0.04	0.322 ± 0.020	0.316 ± 0.011	53.2 ± 2.1	53.1 ± 2.0
152–159	18	2.54 ± 0.00	0.83 ± 0.03	0.81 ± 0.03	0.328 ± 0.012	0.321 ± 0.013	52.8 ± 0.8	52.7 ± 0.9
160–187	15	3.07 ± 0.17	0.97 ± 0.05	0.95 ± 0.08	0.318 ± 0.023	0.310 ± 0.020	52.5 ± 1.6	52.2 ± 1.1
188–199	14	3.38 ± 0.12	1.11 ± 0.06	1.10 ± 0.05	0.328 ± 0.010	0.327 ± 0.023	52.9 ± 0.4	53.0 ± 1.0
200–208	12	3.93 ± 0.22	1.25 ± 0.06	1.18 ± 0.09	0.318 ± 0.022	0.302 ± 0.029	53.8 ± 0.4	53.0 ± 1.1
209–218/211	11	4.60 ± 0.07	1.35 ± 0.05	1.08 ± 0.07	0.295 ± 0.011	0.239 ± 0.017	51.3 ± 0.9	48.7 ± 1.2