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Frontiers of Agricultural Science and Engineering

ISSN 2095-7505

ISSN 2095-977X(Online)

CN 10-1204/S

Postal Subscription Code 80-906

Front. Agr. Sci. Eng.    0, Vol. Issue () : 1-12    https://doi.org/10.15302/J-FASE-2015052
REVIEW
Biofuels and food security
Dmitry S. STREBKOV()
All-Russian Research Institute for Electrification of Agriculture (VIESH), 1-st. Veshnyakovsky proezd, 2, Moscow 109456, Russia
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Abstract

The major source of energy comes from fossil fuels. The current situation in the field of fuel and energy is becoming more problematic as world population continues to grow because of the limitation of fossil fuels reserve and its pressure on environment. This review aims to find economic, reliable, renewable and non-polluting energy sources to reduce high energy tariffs in Russian Federation. Biofuel is fuel derived directly from plants, or indirectly from agricultural, commercial, domestic, and/or industrial wastes. Other alternative energy sources including solar energy and electric power generation are also discussed. Over 100 Mt of biomass available for energy purposes is produced every year in Russian. One of the downsides of biomass energy is its potential threatens to food security and forage industries. An innovative approach proved that multicomponent fuel (80% diesel oil content for motor and 64% for in stove fuel) can remarkably reduce the costs. This paper proposed that the most promising energy model for future is based on direct solar energy conversion and transcontinental terawatt power transmission with the use of resonant wave-guide technology.

Keywords fossil fuels      biofuels      food security      electric power      solar energy     
Corresponding Author(s): Dmitry S. STREBKOV   
Just Accepted Date: 22 April 2015   Online First Date: 18 May 2015    Issue Date: 22 May 2015
 Cite this article:   
Dmitry S. STREBKOV. Biofuels and food security[J]. Front. Agr. Sci. Eng. , 0, (): 1-12.
 URL:  
https://academic.hep.com.cn/fase/EN/10.15302/J-FASE-2015052
https://academic.hep.com.cn/fase/EN/Y0/V/I/1
Fig.1  Sorghum plantations in the Rostov area of a selection by the member of Russian Academy of Agricultural Sciences B.N. Malinovsky (on the right) yields 130 t·hm–2, producing 15 t·hm–2 biofuel.
ParameterValue
Expenses for sorghum cultivation100 USD·hm–2
Yield of dry biomass30 t·hm–2
Manufacture of biofuel15 t·hm–2
The production cost of biofuel250 USD·t–1
Sale price of biofuel500 USD·t–1
Annual volume of sales per hectare500 USD·t–1
Wheat cultivation
Average yield2 t·hm–2
Sale price300 USD·t–1
Annual volume of sales per hectare600 USD·t–1
Tab.1  Economic parameters of biofuel manufacture from sorghum and wheat
Fig.2  Comparative data on raw oil production per hectare of area allocated for crop cultivation
Fig.3  Industrial cultivation of microalgae in open ponds[8]
Fig.4  Cultivation of microalgae in photo bioreactors[8]
Fig.5  Equipment for testing fast pyrolysis at VIESH
Fig.6  Plasma conversion of liquid organic wastes. (a) Electric plasma generator; (b) burning of liquid organic wastes.
Fig.7  Equipment for multicomponent fuel production with 2?t·h-1capacity at the Bioenergy Department of VIESH
No.Fuel charateristicsSummer diesel fuelMunticompotent motor fuel with 80% diesel content
1Lowest combustion value/(kJ·kg–1)4277644327
2Mass fraction of sulfur/%0.1300.038
3Kinematic coefficient of viscosity at 20°C/cSt4.83.9
4Flash temperature in a closed cup/°C7573
5Cetane number5061 (Standard Euro-4)
6Industrial purity class12Over 17
7Fuel storage time per year1
Tab.2  Comparison of the characteristics of diesel, and multicomponent motor fuel
No.Fuel charateristicsHigh-sulfur mazutMunticompotent fuel with 80% mazut content
1Loweset combustion value/(kJ·kg–1)4181644101
2Mass fraction of sulfur/%1.710.87
3Kinematic coefficient of viscosity at 20°C/cSt7.35.9
4Flash temperature in a closed cup/°C9397
5Fuel storage time per year-1
Tab.3  Comparison of characteristics of mazut and multicomponent motor fuel
Reaction numberFuelCalorific efficiency
1Silicon858.294 kJ·mol–1
2Silicon858.294 kJ·mol–1
2 ÷ 3Silicon1.144 MJ·mol–1
4Silicon753.624 kJ·mol–1
Methane879.228 kJ·mol–1
Coal393.559 kJ·mol–1
3Hydrogen285.958 kJ·mol–1
5Sodium silicate35.587 GJ·mol–1
Heavy oil35.587 MJ·mol–1
Tab.4  Comparison of calorific efficiency of silicon and hydrocarbons
Fig.8  Resonant system for electric power transmission. 1 – converter; 2, 4 – resonant high-frequency Tesla transformers; 3 – single-conductor high-voltage line connecting the transformers; 5 – inverter.
Fig.9  20 kW, 5 kHz resonant electric power transmission system
Fig.10  Experimental models. (a) Non-contact high frequency electric vehicle; (b) a model of an electric tractor, using non-contact trolley.
Fig.11  Mega project global solar power system
Fig.12  Experimental model of a non-tracking solar concentrator module with 800 W peak capacity. The photoreceiver area is reduced by a factor of three in comparison with solar power plants without concentrators.
Fig.13  High voltage PV module
Fig.14  Solar power plant with 1150 W capacity and with 40-50 years of service life
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