Showing posts with label bio-ethanol. Show all posts
Showing posts with label bio-ethanol. Show all posts

Thursday, 1 February 2024

Estimation of the Required Bio-Fuels Substituting Petroleum-Based Fuels in Road-Transportation in the Island of Crete, Greece and Their Climate Change Impacts | Chapter 4 | Contemporary Perspective on Science, Technology and Research Vol. 4

Climate change consists of the most important global environmental problem in our era and its mitigation requires the elimination of the fossil fuels use in all sectors. Transportation consumes large amounts of fossil fuels and has a high share in carbon emissions. According to the current EU policies the conventional vehicles using petrol-based fuels should substitute by 2030 at least 14% of their fuels with bio-fuels including bio-ethanol and bio-diesel. The vehicles in the island of Crete, Greece currently use conventional fuels. The present study investigates the feasibility of substituting 14% of their petrol-based fuels with bio-fuels that could be produced locally. The consumption of gasoline and diesel oil during 2021 in Crete was estimated at 309,766 tons while their carbon emissions at 1,005,182 tnCO2. The required bio-ethanol substituting 14% of the gasoline currently used is estimated at 33,475 tons/year while the bio-diesel substituting the diesel oil at 28,260 tons/year. The annual carbon emission savings due to substitution of conventional fuels with bio-fuels are calculated in the range of 57,207 tnCO2 to 68,105 tnCO2. The land required for the cultivation of the crops producing the abovementioned quantities of bio-fuels corresponds at 4.33% of the total island’s area. The cultivation of energy crops in Crete for bio-fuels production is not foreseen in the future and the required bio-fuels to meet the EU quota should be imported from other territories. It is foreseen that the future de-carbonization in vehicles’ transportation in Crete should be achieved with the electrification of the transportation sector using green electricity generated locally by the abundant solar and wind energy resources.

Author(s) Details:

John Vourdoubas,
107B El. Venizelou Str., 73132, Chania, Crete, Greece.


Please see the link here: https://stm.bookpi.org/CPSTR-V4/article/view/13137


Friday, 17 July 2020

Experimental Investigation on Physico-chemical Properties of Bio-ethanol/Gasoline Blends and the Qualitative Effect of Different Blends on Gasoline Quality and Engine Performance | Chapter 12 | Current Strategies in Biotechnology and Bioresource Technology Vol. 2

Physico-chemical and operational properties of various gasoline bio-ethanol blends were evaluated. Bio-ethanol was obtained through distillation from maize (Zea mays), sugar cane (Saccharum L), raffia (Raffia vinefera) wine, and palm wine and then purified using a rotavapor. Engine trails involved combinations of various ratios of gasoline/bio-ethanol as fuel in a small unmodified gasoline engine connected to a dynamometer. The vapour pressure, octane number, flash point, specific gravity, and energy density of various compositions of the blends were evaluated. Sugar cane gave the highest yield of alcohol 97.99 g per kg of produce while the lowest amount of alcohol of 10.5 ml per kg of produce was obtained from palm wine. Engine power decreased from 0.400 kW with 100% gasoline as fuel to 0.108 kW with a gasoline ethanol ratio of 1: 10. The octane number increased from 93 at E10 to 106 at E90. The energy density decreased from 33.180 MJ/l at E10 to 23.600 MJ/l at E90. Other physical observations suggest that to successfully run a gasoline engine with bio ethanol/gasoline blends some modifications would have to be done on the engine, including advancing of ignition timing, provision of air tight fuel conduit network, and modification of piston heads to improve pre-combustion fuel homogenisation. 

Author(s) Details

 J. K. Tangka,
Renewable Energy Laboratory, Department of Agricultural Engineering, University of Dschang, P.O. Box 373, Dschang, Cameroon
View Book :- http://bp.bookpi.org/index.php/bpi/catalog/book/206