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World is heading towards the crisis of fossil fuel. Energy crisis is more acute in Bangladesh, as there is no petro-fuel source but only natural gas. It has among the lowest per capita energy (240 kg oil equivalents) consumption in the world and is severely dependent on additional environmentally friendly renewable energy resources in the future. To cope up with present situation and to reduce dependency...
Seawater samples were collected from the coastal area along the Lebanese coast. The samples were fertilized using Guillards F/2 medium and cultured in 2 L flasks. Out of five promising blooms, three were selected and cultured in 70 L cylinders and in 300 L raceway ponds under greenhouse conditions. A culture of Chlorella "marine" was used as reference. The growth dynamics were determined...
Seawater samples were collected from various locations along the Lebanese coast. Four unilagal isolates were acquired using streaking and serial dilution methods. The four isolates were cultured in 20 L flat photo-bioreactors containing seawater fertilized with Guillards F/2 medium. The growth dynamics, dry matter yield, lipid content, fatty acid profile and potential biodiesel yield were determined...
Bangladesh, a fuel hungry nation of South Asia, is immensely polluted. Day by day both pollution and demand for fuel is increasing proportionally. Fossil Fuels; which a driving factor of our economy is extremely high priced compared to the living standard of Bangladesh. Keeping in context of the climatic change and price of oil barrel soaring each day, biofuel can be a cheap and fruitful alternative...
Biogas is a renewable energy carrier and the production of biogas is associated with double benefits: elimination of environmental pollution problems is coupled with the generation of useful energy. Biogas technologies commonly apply natural anaerobic consortia of microbes. This is partly due to the fact that, from a microbiological aspect, this is a very complicated and complex system. Moreover,...
Up to now the direct use of crude bio-oil as transportation fuel has been an impossible goal due to the thermal instability and some other drawbacks of bio-oil. In this paper, we use a simple method to accomplish the goal. Bio-oil and bio-diesel are potential renewable and carbon-neutral alternative to fossil fuel. We mix bio-oil and bio-diesel to get the emulsion using octanol as the emulsifier....
Renewable energy is one of the vital sources to meet partially the global energy demand of developed as well as developing countries. Biogas plant can be one of the major sources of renewable energy in Malaysia as huge amount of palm oil waste is available. Biogas plant can be of different types of which fixed dome and floating cover are in use in many countries for many years. The bag design is becoming...
The energy shortage and environment pollution is attracting more and more attention with the social development. Hence it is important to develop new energy and renewable energy that are bio-energy, wind energy, solar energy, small waterpower, tide energy, terrestrial heat energy, and hydrogen energy and so on. The research of distributed power system with the solar and wind power is the leading domain...
Urban sustainability is a subject of recent focus in North America, and Canada specifically. As our urban areas continue to grow and consume large quantities of energy and produce massive amounts of waste, we are faced with the challenge of how to manage this situation in a way which is both responsible and sustainable. One feasible urban waste-to-energy technology is anaerobic digestion. Anaerobic...
A brief history of the Brazilian ethanol industry and its success is presented, such as, today the ethanol consumption for car's fuel supply is higher, cheaper and very much cleaner than the gasoline fuel. In continuation, some of the fallacious myths against the Brazilian sugarcane ethanol are refuted. The evolution of the Brazilian ethanol power industry is showed. Brazil has a potential of, at...
Climate change as well as the growing import dependency - especially of the European Union - afford stringent measures. The new energy strategy of the EU sets challenging goals particularly regarding the future share of renewable energies. Especially the electricity production from renewable energies is of special interest because questions concerning storage and system integration are more difficult...
This document reports the development of a technical and economical study related to the use of a renewable energy source - biomass for electricity and heat production. It is a hybrid and autonomous system with solar PV panels and environment friendly process aiming the reduction of energy demand, costs and emissions. This energy model is a new sustainable standard about efficiency consumption energy...
Renewable energy systems such as wind, solar and biomass are significantly more land intensive than traditional fossil fuels. Moreover, their environmental implications are highly geographically heterogeneous. Consequently, they present a significant challenge to existing life cycle assessment techniques. Four specific issues are identified in this paper: determining changes in land use due to increased...
The phenomenon of gradual warming of the planet has occurred for thousands of years, but it has been increasing in the course of the twentieth century due to the high concentrations of gases, which are responsible for the greenhouse effect. Recently, the scientific community has been debating and searching for new sources of renewable energies and the effects of the increasing emissions. Taking these...
Fossil fuel reserves would be exhausted at the current rate of consumption in the near future. So an alternative renewable energy technique for producing alcohol by fermenting an alcohol spawn of grain has been developed in many countries. Cellulose is not easy to hydrolyze and lignin and hemi-cellulose are bad in accessibility, a manufacturing process is lengthy and not efficient. Therefore there...
The control of a pyrolysis process producing bio-oil, gas and char starting from vegetable biomasses is considered. The highly nonlinear model and the configuration of input variables is faced by maximizing the economic profit. The control procedures are designed so that the burden of the farm management is minimized. The cost reduction is essential in order to make possible the use of pyrolysis process...
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