Agricultural residues have high potential to produce biogas, but they contain lignocellulosic materials which are not easily degradable, so the pretreatment is required. Chemical pretreatment increases the rate of degradation and efficiency of biogas production. This study has been investigated the effect of 4% -urea, 5%-ammonia and 8%-sodium hydroxide on degradation of rice straw and production of biogas combined with sheep manure with three Carbon to Nitrogen ratios (15, 20 and 29) in anaerobic digester at temperature of 40±2 °C. The process was performed in a factorial design with two factors in three replications. Results showed that the cumulative production of biogas and the maximum percent of Methane are 594 (ml/VSadd ) (that is 133.33% more than the control) and 71% that they achieved by 8%-NaOH-pretreated straw combined with manure in Carbon to Nitrogen ratio of 29. The results show the positive effect of chemical pretreatment of rice straw on efficiency of biogas production combined with sheep manure.
Saeidi, S., Hashemi, S. J., & Kazemi, S. Y. (2013). Investigation of chemical pretreatment of rice straw with ammonia, urea and
sodium hydroxide. Iranian Journal of Biosystems Engineering, 44(1), 67-75. doi: 10.22059/ijbse.2013.36165
MLA
Soudabeh Saeidi; Seyyed Jafar Hashemi; Seyed Yahya Kazemi. "Investigation of chemical pretreatment of rice straw with ammonia, urea and
sodium hydroxide", Iranian Journal of Biosystems Engineering, 44, 1, 2013, 67-75. doi: 10.22059/ijbse.2013.36165
HARVARD
Saeidi, S., Hashemi, S. J., Kazemi, S. Y. (2013). 'Investigation of chemical pretreatment of rice straw with ammonia, urea and
sodium hydroxide', Iranian Journal of Biosystems Engineering, 44(1), pp. 67-75. doi: 10.22059/ijbse.2013.36165
VANCOUVER
Saeidi, S., Hashemi, S. J., Kazemi, S. Y. Investigation of chemical pretreatment of rice straw with ammonia, urea and
sodium hydroxide. Iranian Journal of Biosystems Engineering, 2013; 44(1): 67-75. doi: 10.22059/ijbse.2013.36165
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