Integrated algal and oil palm biorefinery as a model system for bioenergy co-generation with bioproducts and biopharmaceuticals

Bioresources and Bioprocessing

Table 1 Production of biogas from the multi-algal co-digestion with EFB, POME and sludge inoculum (Ahmad et al. 2016)

Expt	Independent variables				Specific production of biogas rate (m³/kg COD/day)	Biomethane (mL CH₄/ L POME/day)	CO₂ (mL CO₂/L POME/day)
Run	N. oculata (mL/mL POME)	Chlorella sp. (mL/mL POME)	T. suecica (mL/mL POME)	EFB (g/mL POME)	Specific production of biogas rate (m³/kg COD/day)	Biomethane (mL CH₄/ L POME/day)	CO₂ (mL CO₂/L POME/day)
Group A
28	0	0	0	0.12	0.125	3539.0	3534.0
6	1	1	0	0.12	0.124	4651.9	2265.9
3	1	0	1	0.12	0.101	2765.2	2036.6
22	0	1	1	0.12	0.104	3541.6	1556.5
Group B
17	1	0	0	0.06	0.095	3030.6	1730.0
10	0	1	0	0.06	0.121	3165.0	1883.4
8	0	0	1	0.06	0.099	2853.6	1550.6
23	1	1	1	0.06	0.108	3132.2	1853.6
9	1	1	1	0.06	0.111	3072.2	2272.0
Group C
27	0	0	0	0	0.104	2540.0	2532.0
7	1	1	0	0	0.099	2579.8	2301.5
13	1	0	1	0	0.099	2778.9	1475.1
19	0	1	1	0	0.099	2353.0	1939.8
Group D
18	2	1	1	0.12	0.097	4018.9	2079.5
2	1	2	1	0.12	0.099	2787.5	2272.4
26	1	1	2	0.12	0.108	1064.8	914.38
Group E
24	2	1	0	0.06	0.124	1224.8	873.7
14	2	0	1	0.06	0.121	2123.6	1643.4
1	0	2	1	0.06	0.104	2224.8	1654.3
15	1	2	0	0.06	0.107	2787.5	1753.9
5	1	0	2	0.06	0.106	1229.4	1153.9
16	0	1	2	0.06	0.089	1026.7	934.6
Group F
12	2	2	1	0.06	0.077	952.74	864.8
11	2	1	2	0.06	0.081	943.74	853.8
21	1	2	2	0.06	0.082	952.74	863.8
Group G
4	2	1	1	0	0.108	3601.3	1543.3
20	1	2	1	0	0.096	2424.0	1984.9
25	1	1	2	0	0.088	870.5	803.4