Table 4
Ethanol yields obtained in previous studies.
Reference Substrates Pretreatment description Ethanol
yield
[19] Asli and Qatibi, 2009 Olive Oil production wastes OP treated with 1.75 w/v sulphuric acid and heated it at 140 !C for 10 min 5.40%
[20] Tayed et al., 2014 Olive Oil production wastes No pretreatment 5.00%
[26] Echegaray et al., 2000 Sugar cane molasses Acid Pretreatment (pH ¼ 4 for 24 h) 34.61%
[34] Roukas, 1996 Beet molasses Not Pretreated 25.20%
[35] Dombek and Ingram, 1987 Glucose Not Pretreated 25.63%
[36] Singh et al., 2013 Sugarcane bagasse Basic (pH ¼ 12 for 20 min) and thermal pretreatment (500 W for 20 min) 30.80%
[37] Da Silva Martins et al.,
2015
Cellulosic fraction of sugarcane
bagasse
H2O2 and NaOH addition till to reach the pH of 11.5 and thermal pretreatment
(90 !C)
10.08%
[38] Alting and Zhaoping, 2015 Cellulosic material Na Alginate pretreatment (pH 4.5) 19.31%