Research
Study of Production Parameters of Bioethanol from Neem Fruit Pulp (Azadirachta Indica)
This study is a contribution to the valorisation of neem fruit pulp (Azadirachta indica) to produce bioethanol by alcoholic fermentation. During this study, a physical characterization of neem fruit and physicochemical neem pulp were performed. Also, the variation of the concoction pH of the fermentation tests was carried out in order to find the ideal pH for optimal production of bioethanol by the yeast Saccharomyces cerevisiae. The results obtained show that the pulp represents about 48% of the total mass of neem fruit. And also reveals that the neem pulp is very rich in total sugars (74% for Makabaye and 73% for Baoliwol) and that they can be converted into bioethanol by alcoholic fermentation. The unadjusted wort pH (pH = 5.4) resulted in a maximum bioethanol production of 5.1 mL / 100g DM in 05 days of fermentation compared to other fermentation tests (pH = 4.3 , 4.5 and 4.7). Also, the distillation of the fermented concoction allowed to obtain bioethanol with an alcohol content of 85% (v / v). This study has shown that neem fruit pulp can be used as an organic material rich in sugars, with a view to intensive production of bioethanol.
Optimization of the use of Betterave (Beta Vulgaris) for the Production of Green Energy
This work aimed to conduct optimization method of ethanol production from using beet. To attain this objective, we propose to produce the distillation energy through biogas, and fertilizer for the culture of beet. We carried out some tests by using samples of red beets. These samples were subjected to fermentation, distillation with Vigreux column and methanization. The red beet was, a grinder, juice extractor, fermenters, fresh yeast, water, distillation device with a Vigreux column, two batch digesters, a balance and graduated containers. During the tests 376 mL of ethanol, 31 L of biogas and fertilizer evaluated at 1 KWh were obtained. The energy efficiency of production with this method stood at 58, 54 %. This discovery could be a solution to energy problems of many regions, an alternative to fossil energy while being a source of fertilizer. The proposed system does not reject waste: the carbon cycle and even that of nitrogen is closed. It is less costly and easy to put in place. He is environment friendly and has a good energetic performance.
