Table 2 Initial concentration of various dynamic state variables considered in the model for the batch studies.

From: A general framework to model the fate of trace elements in anaerobic digestion environments

	Variable	Scenario 1 COM	Scenario 2 Variable TEs			Scenario 3 Ca–Mg	Scenario 4 EDTA	Scenario 5 Variable Binding density			Unit
	Variable	Scenario 1 COM	Fe	Co	Ni	Scenario 3 Ca–Mg	Scenario 4 EDTA	Biomass	Inert	Precipitate	Unit
1	S_su	0	0	0	0	0	0	0	0	0	g COD L⁻¹
2	S_aa	0	0	0	0	0	0	0	0	0	g COD L⁻¹
3	S_fa	0	0	0	0	0	0	0	0	0	g COD L⁻¹
4	S_va	0	0	0	0	0	0	0	0	0	g COD L⁻¹
5	\(S_{{bu^{-} }}\)	0	0	0	0	0	0	0	0	0	g COD L⁻¹
6	\(S_{{pro^{-} }}\)	0	0	0	0	0	0	0	0	0	g COD L⁻¹
7	\(S_{{ac^{-} }}\)	0	0	0	0	0	0	0	0	0	g COD L⁻¹
8	S_h2	0	0	0	0	0	0	0	0	0	g COD L⁻¹
9	S_ch4	0	0	0	0	0	0	0	0	0	g COD L⁻¹
10	S_co2	0	0	0	0	0	0	0	0	0	g COD L⁻¹
11	S_nh3	0	0	0	0	0	0	0	0	0	g COD L⁻¹
12	S_I	0	0	0	0	0	0	0	0	0	g COD L⁻¹
13	X_c	Variable^a	2	2	2	2	2	2	2	2	g COD L⁻¹
14	X_ch	0	0	0	0	0	0	0	0	0	g COD L⁻¹
15	X_pr	0	0	0	0	0	0	0	0	0	g COD L⁻¹
16	X_li	0	0	0	0	0	0	0	0	0	g COD L⁻¹
17	X_su	0.12	0.12	0.12	0.12	0.12	0.12	0.12	0.12	0.12	g COD L⁻¹
18	X_aa	0.12	0.12	0.12	0.12	0.12	0.12	0.12	0.12	0.12	g COD L⁻¹
19	X_fa	0.12	0.12	0.12	0.12	0.12	0.12	0.12	0.12	0.12	g COD L⁻¹
20	X_c4	0.12	0.12	0.12	0.12	0.12	0.12	0.12	0.12	0.12	g COD L⁻¹
21	X_pro	0.12	0.12	0.12	0.12	0.12	0.12	0.12	0.12	0.12	g COD L⁻¹
22	X_ac	0.12	0.12	0.12	0.12	0.12	0.12	0.12	0.12	0.12	g COD L⁻¹
23	X_h2	0.12	0.12	0.12	0.12	0.12	0.12	0.12	0.12	0.12	g COD L⁻¹
24	X_I	0	0	0	0	0	0	0	0	0	g COD L⁻¹
31	S_hva	0	0	0	0	0	0	0	0	0	g COD L⁻¹
32	S_hbu	0	0	0	0	0	0	0	0	0	g COD L⁻¹
33	S_hpro	0	0	0	0	0	0	0	0	0	g COD L⁻¹
34	S_hac	0	0	0	0	0	0	0	0	0	g COD L⁻¹
35	\(S_{{hco3^{-} }}\)	0	0	0	0	0	0	0	0	0	M
36	\(S_{{nh4^{+} }}\)	0.006	0.006	0.006	0.006	0.006	0.006	0.006	0.006	0.006	M
37	\(S_{{co3^{2-} }}\)	0.004	0.004	0.004	0.004	0.004	0.004	0.004	0.004	0.004	M
38	\(S_{{Ca^{2+} }}\)	0.0025	0.0025	0.0025	0.0025	Variable^a	0.0025	0.0025	0.0025	0.0025	M
40	\(S_{{Mg^{2+} }}\)	0.0025	0.0025	0.0025	0.0025	Variable^a	0.0025	0.0025	0.0025	0.0025	M
42	\(S_{{Ni^{2+} }}\)	0.00001	0.00001	0.00001	Variable^a	0.00001	0.00001	0.00001	0.00001	0.00001	M
44	\(S_{{Co^{2+} }}\)	0.0000001	0.0000001	Variable^a	0.0000001	0.0000001	0.0000001	0.0000001	0.0000001	0.0000001	M
46	\(S_{{Fe^{2+} }}\)	0.0001	Variable^a	0.0001	0.0001	0.0001	0.0001	0.0001	0.0001	0.0001	M
51	\(S_{{po4^{3-} }}\)	0.006	0.006	0.006	0.006	0.006	0.006	0.006	0.006	0.006	M
58	\(S_{{hs^{-} }}\)	0.001	0.001	0.001	0.001	0.001	0.001	0.001	0.001	0.001	M
71	\(S_{{edta^{4-} }}\)	0.0001	0.0001	0.0001	0.0001	0.0001	Variable^a	0.0001	0.0001	0.0001	M

^aRefer Table 1.

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Table 2 Initial concentration of various dynamic state variables considered in the model for the batch studies.

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