Table 3
(continued)
Strain
Processing
conditions
Method of
pretreatment
Operating conditions
Biogas production
Reference
Before
pretreatment
After
pretreatment
Rhizoclonium
28 days (53 °C)
Size reduction
(cutting)
5 cm, 1 cm
0.23–0.24 L
CH
4 /g TS
0.093–
0.100 L
CH
4 /g TS
Ehimen et al. (2013)
Size reduction
(grinding)
<0.1 mm
0.100–0.113
L CH
4 /g TS
Sonication
20 kHz, 10 min
0.113–
0.127 L
CH
4 /g TS
Enzymes
Combination of enzymes
(lipase, xylanase,
a-amylase, protease,
cellulase)
0.143 L
CH
4 /g TS
Microalgal
biomass
HRT 15 days
(35 °C)
Microwave
900 W, t = 3 min, 110 °C,
200 kJ/kg VS
0.13 L CH
4 /
g VS
0.17 L CH
4 /
g VS
Passos et al. (2014)
20 days (35 °C)
0.17 L CH
4 /
g VS
0.27 L CH
4 /
g VS
Algae biomass
28 days (38 °C)
Thermal
100 °C, 8 h
0.34 g
MSGP g/L
0.45 MSGP
g/L
Chen and Oswald
(1998)
Chlorella
vulgaris
25 days (35 °C)
Ultrasound
200 J/mL
0.230 L
CH
4 /g VS
0.440 L
CH
4 /g VS
Park et al. (2013)
Scenedesmus
obliquus,
Chlorella
vulgaris
46 days (35 °C)
Microwave
21,800 kJ/kg TS
0.172 L
biogas/g VS
0.2120 L
biogas/g VS
Passos et al. (2013)
43,600 kJ/kg TS
0.245 L
biogas/g VS
65,400 kJ/kg TS
0.307 L
biogas/g VS
(continued)
76
S. Joshi and P. Gogate