Biomedical Engineering Reference
In-Depth Information
Table 3 Hydrogen production capability of the two-step dark fermentation and photofermentation
Bacteria for dark fermentation
Bacteria for photofermentation
Feedstock/light source
H
2
production
(mol H
2
/mol substrate)
References
Microflora
Rhodobacter sphaeroides SH2C
Sucrose/tungsten
6.63
[
81
]
Caldimonas taiwanensis On1
Rhodopseudomonas palustris WP3-5
Starch/tungsten
3.09
[
82
]
Activated sludge
Rhodopseudomonas palustris
Starch/tungsten
402 ml/g starch
[
83
]
Clostridium pasteurianum CH4
Rhodopseudomonas palustris WP3-5
Sucrose/tungsten
10.0
[
84
]
Clostridium pasteurianum CH4
Rhodopseudomonas palustris WP3-5
Sucrose/optical fibers
14.2
[
84
]
Table 4
Performances in different types of microbial electrolysis cells
Architecture and material
Reactor
Anode and surface area
Applied voltage (V)
Conversion (%)
Hydrogen yield (substrate)
References
Carbon cloth, 68 cm
2
2-chamber
0.5
11.6
0.5 mol H
2
/mol (acetate)
[
86
]
Carbon cloth, 36 cm
2
2-chamber
0.5
25
1.0 mol H
2
/mol (acetate)
[
87
]
Activated carbon granular, 94,500 m
2
2-chamber
0.5
35.5
1.4 mol H
2
/mol (acetate)
[
87
]
Brush, 0.22 m
2
Single-chamber
0.7
78 ± 4
3.0 mol H
2
/mol (acetate)
[
88
]
Brush, 0.22 m
2
Single-chamber
0.6
—
21.0 mmol H
2
/g COD (protein)
[
89
]
Methane control
Reactor
Strategies
Performance
References
Single-chamber
Increased applied voltage from 0.3 to 0.7 V
CH
4
reduced from 10 to 4%
[
90
]
2-chamber
Exposed anode biofilm in air
CH
4
reduced
[
91
]
Single-chamber
Low temperature
No CH
4
production at 4 and 9 C
[
92
]
COD chemical oxygen demand
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