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Tampilkan postingan dengan label green fuel. Tampilkan semua postingan

Rabu, 28 Mei 2008

Green Fuel

Humans have used biomass fuels in the form of solid biofuels for heating and cooking since the discovery of fire. Following the discovery of electricity, it became possible to use biofuels to generate electrical power as well. However, the discovery and use of fossil fuels: coal, gas and oil, have dramatically reduced the amount of biomass fuel used in the developed world for transport, heat and power.

Biofuel (if cultivated, then also called agrofuel or agrifuel) can be broadly defined as solid, liquid, or gas fuel consisting of, or derived from recently dead biological material, most commonly plants. This distinguishes it from fossil fuel, which is derived from long dead biological material.

Biofuel can be theoretically produced from any (biological) carbon source. The most common by far is photosynthetic plants that capture solar energy. Many different plants and plant-derived materials are used for biofuel manufacture.

Biofuels are used globally and biofuel industries are expanding in Europe, Asia and the Americas. The most common use for biofuels is as liquid fuels for automotive transport. The use of renewable biofuels provides increased independence from petroleum and enhances energy security.[1]

There are various current issues with biofuel production and use, which are presently being discussed in the popular media and scientific journals. These include: the effect of moderating oil prices, the "food vs fuel" debate, carbon emissions levels, sustainable biofuel production, deforestation and soil erosion, impact on water resources, human rights issues, poverty reduction potential, biofuel prices, energy balance and efficiency, and centralised versus decentralised production models.

One of the greatest technical challenges is to develop ways to convert biomass energy specifically to liquid fuels for transportation. To achieve this, the two most common strategies are:

1. To grow sugar crops (sugar cane, and sugar beet), or starch (corn/maize), and then use yeast fermentation to produce ethanol (ethyl alcohol).There is a new sugar crop for Ethanol production - Sweet sorghum (see here)
2. To grow plants that (naturally) produce oils, such as oil palm, soybean, algae, or jatropha. When these oils are heated, their viscosity is reduced, and they can be burned directly in a diesel engine, or the oils can be chemically processed to produce fuels such as biodiesel.
Wood and its byproducts can be converted into biofuels such as woodgas, methanol or ethanol fuel. Some researchers are working to improve these processes.

Related link at http://www.biofuels-news.com

Selasa, 27 Mei 2008

The Fact and the Act

Start from now on, we are need and must apply "Green Technology", Our Blue planet (Earth) already in crisis and need help. Many anomalies happen such as the Rise of air Temperature, Flood, Dry season, etc. This is what we call as the Effect of "Global Warming".

Have you seen the Movie "An Inconvenient Truth”, which showing to us the fact that already happens in our daily life, Global Warming caused by Human contribution of CO2 gas. Our Earth is crying.

Research and Development about Green Technology are in progress. In Newspaper, Television, and Internet, we can start hear many new innovation of green tech product, such as Green Fuel, auto pot, environmentally battery, Recycling trash, etc. These were good news for us and for our Earth.

Let's open our mind and start supporting, by starting with our self, our home, our office, our city, our country, and our planet. Let’s get greener.