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Table 5

Digestate characteristics of the pilot digesters during the ACoD period

Phase	Parameter	Unit	Control	Pilot A	Pilot B
Solid	TS	g kg⁻¹	120 ± 8	130 ± 5	100 ± 4
	VS	g kg⁻¹	80 ± 1	90 ± 1	70 ± 2
	Lipids (D.W.)	%	4.8 ± 0.2	4.6 ± 0.2	4.6 ± 0.2
	TKN	g L⁻¹	<0.5	0.91 ± 0.08	1.27 ± 0.04
	Phosphorus	mg g⁻¹	9.2 ± 0.1	8.5 ± 0.1	9.0 ± 0.1
	Methane yield (BMP test)	NmlCH₄ gVS_added⁻¹	64.7 ± 10.8	28.4 ± 4.4	24.8 ± 0.9
Liquid	TS	g L⁻¹	3.20 ± 0.02	2.40 ± 0.10	3.28 ± 0.03
	VS	g L⁻¹	2.29 ± 0.03	1.59 ± 0.07	1.98 ± 0.05
	TAC	mg_CaCO3L⁻¹	4,067 ± 38	3,250 ± 50	5,675 ± 43
	VFA	mg_HAc L⁻¹	430 ± 9	330 ± 15	600 ± 15
	TCOD	mg L⁻¹	4,300 ± 20	2,480 ± 20	3,370 ± 10
	SCOD	mg L⁻¹	3,620 ± 24	1,770 ± 6	2,760 ± 14
	TKN	g L⁻¹	4.2 ± 0.2	4.6 ± 0.1	3.4 ± 0.2

Phase	Parameter	Unit	Control	Pilot A	Pilot B
Solid	TS	g kg⁻¹	120 ± 8	130 ± 5	100 ± 4
	VS	g kg⁻¹	80 ± 1	90 ± 1	70 ± 2
	Lipids (D.W.)	%	4.8 ± 0.2	4.6 ± 0.2	4.6 ± 0.2
	TKN	g L⁻¹	<0.5	0.91 ± 0.08	1.27 ± 0.04
	Phosphorus	mg g⁻¹	9.2 ± 0.1	8.5 ± 0.1	9.0 ± 0.1
	Methane yield (BMP test)	NmlCH₄ gVS_added⁻¹	64.7 ± 10.8	28.4 ± 4.4	24.8 ± 0.9
Liquid	TS	g L⁻¹	3.20 ± 0.02	2.40 ± 0.10	3.28 ± 0.03
	VS	g L⁻¹	2.29 ± 0.03	1.59 ± 0.07	1.98 ± 0.05
	TAC	mg_CaCO3L⁻¹	4,067 ± 38	3,250 ± 50	5,675 ± 43
	VFA	mg_HAc L⁻¹	430 ± 9	330 ± 15	600 ± 15
	TCOD	mg L⁻¹	4,300 ± 20	2,480 ± 20	3,370 ± 10
	SCOD	mg L⁻¹	3,620 ± 24	1,770 ± 6	2,760 ± 14
	TKN	g L⁻¹	4.2 ± 0.2	4.6 ± 0.1	3.4 ± 0.2

D.W., Dry Weight.