Table 3.

Different mode of bioreactors applied for ethanol production using different substrates and microorganism

S. no	Type of bioreactor	Substrate	Microorganism involved	Ethanol concentration/productivity	References
1	Pervaporation membrane bioreactor	Glucose	S. cerevisiae	Maximum ethanol concentration was 22.085 g/l in feed side and 435.47 g/l in permeate side after 44 h	[105]
2	Batch reactor	Sugarcane bagasse	Scheffersomyces stipis	Maximum ethanol production after 72 h was 7.34 g/l	[106]
3	Batch reactor	Sugarcane bagasse	Scheffersomyces shehatae	Maximum ethanol production after 72 h was 18 g/l	[106]
4	Fed batch	Corn stover	S. cerevisiae SyBE005	Maximum ethanol concentration was 48.2 g/l	[107]
5	Continuous mode bioreactor	Sugarcane bagasse	S. cerevisiae	Maximum ethanol concentration in the permeate was 43.2 g/l after 19 h	[108]
6	Packed bed Biofilm reactor (repeated batch)	Rice straw hydrolysate	Zymomonas mobilis	Ethanol yield after 3 days was 0.36 to 0.38 g/g	[109]
7	Stirred tank bioreactor (single step batch)	Cassava starch	Kluyveromyces marxianus SS106	Ethanol concentration after 72 h was 7.91% (v/v)	[110]
8	Fed-batch bioreactor	Glycerol	Klebsiella pneumoniae Kp17	Final ethanol production after 30 h was 17.30 g/l	[111]
9	Fed-batch bioreactor	Sugarcane juice and molasses mix	S. cerevisiae	Ethanol concentration of 135.0 g/l after 30 h	[112]
10	Continuous mode bioreactor	Glucose	Immobilized Z. mobilis ATCC 29,191 cells	Ethanol productivity was 31.09 g/l/h	[113]