Ethanol Production of Biomass Rich in Sugar: Energy and Environmental Opportunity

Abstract

Of our days, fossil fuels, which are at the base of the oil, are scarce. In addition, the whole world knows at this time a growing commitment to a sustainable environment. Result? Use biofuel (ethanol and diesel) of biomass. The main motivation of the development of biofuels (ethanol and biodiesel) is the environmental gain potential that biofuel provide compared to petrochemical fuels.According to the International Energy Agency (IEA), biofuel will account for 12% of global stocks of liquid fuel by 2030, and this percentage will increase to 26% by 2050. In 2008, biofuel represented a little more than 1 per cent of the whole of the liquid fuels for engines. This paper interested in the realization of the alcoholic fermentation of biomass rich in sugar; the waste of dates of two varieties; at the laboratory scale in order to optimize the performance in bioethanol per kg of biomass; this reaction is governed by operating conditions very critical for this our first step of work has been to determine the parameters of the good functioning of the alcoholic fermentation.The results of our study has shown that the optimal temperature of the alcoholic fermentation is 30°C, the pH range of 6-5.5, agitation is 150 rpm, the residence time of the reaction is 72h and for a concentration of 300g/L glucose of waste soft dates of we produces a concentration of 280g/L of ethanol and a productivity of 3,88g/L/h of ethanol for 165g of biomass. In the case of waste dried dates of mass 173g, it was found for a concentration of 100g/L glucose, we produces 320g/L of ethanol with a productivity of 4,44g /l/h.

Determination of the Artificial Filtering Massif Location for Purification Quarry Wastewaters of Kamyshansky Open Pit Mine

“…A significant number of works [7][8][9][10][11][12][13][14][15][16][17] are devoted to the study of natural sorbents and adsorption processes characteristic of phase separation surfaces. Natural sorbents for effective purification of industrial wastewater from dissolved and very fine (colloidal) mechanical particles can act overburden rocks of the developed deposit, with a high specific surface area.…”