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Venture capital firms have invested almost $20 billion into hundreds of greentech startups since 2005.
BP Oil Disaster
Modern life depends upon energy and with each passing day it becomes more evident that clean, climate-friendly, and affordable energy technologies must be deployed as rapidly as possible. To that end, the United States and other nations are striving to make wind, solar, geothermal, hydrogen, and other “green” technologies a larger part of their overall energy mix.
Gasification is a process where substances such as wood, corn cobs, coal, cow manure, peach-pits, and other dried biomasses are reacted (burned). The process takes place in a device called a gasifier or gas producer, which can range in size, shape, and design, depending on application or design year. Instead of burning fast and bright like a campfire, the fuel in the gasifier has limited oxygen and separates the combustion of the fuel in multiple stages.
2.4.1 Need for selection of the right gasifier for each fuel 2.4.2 Energy content of the fuel 2.4.3 Moisture content of the fuel 2.4.4 Volatile matter content of the fuel 2.4.5 Ash content and ash chemical composition 2.4.6 Reactivity of the fuel 2.4.7 Particle size and size distribution 2.4.8 Bulk density of the fuel 2.4.9 Charring properties of the fuel 2.4.10 Assessment of the suitability of various types of biomass as gasifier fuel 2.4.1 Need for selection of the right gasifier for each fuel
Gasification is a thermo-chemical process in which carbonaceous (carbon-rich) feedstocks such as coal, petro-coke or biomass are converted into a gas consisting of hydrogen and carbon monoxide (and lesser amounts of carbon dioxide and other trace gases) under oxygen depleted, high pressure, high-heat and/or steam conditions. The resulting gaseous compound is called Syngas . Carried out under proper conditions, gasification is an efficient energy extracting process that can return double benefits as a waste stream disposal system.
Water Benefits Accounting considers the different ways in which we value water.
Feb. 18, 2010 — A five-year research project has come up with a way of generating green energy from a humble everyday grass.
NPR has a good, quick introduction to switch grass, which snuck its way into this week's State of the Union address as an example of a new energy technology available to help replace oil imports.
Ethanol made from a prairie grass shows promise as a viable fuel that could be much more environmentally friendly and energy-efficient than corn ethanol, a new study says. Ethanol is often touted as a cleaner-burning gasoline alternative that lessens dependence on oil. ( Get the basics on greenhouse gases and global warming. ) But a key criticism of the biofuel is that large amounts of fossil fuels are required to farm and refine it.
Energy & Sustainability :: Greenwire :: November 25, 2009 :: :: Email :: Print Could seaweed farming prove a boon for biofuels?
Turning seaweed into a fuel source could help ease competition on land for growing crops.
Pilot seaweed and algae farms are needed to assess Scotland's marine biomass potential, experts have urged. The recommendation comes in a report on using biomass for heating and fuel while avoiding the use of valuable agricultural land. Scientists want to see pilot farms and research into the most energy-rich types of seaweed.
A tanker carrying liquefied natural gas that was made from harvesting the naturally occurring gas produced from the decomposition of organic trash.
Demand grows for natural gas waste hauling The sudden rise in the cost of gasoline and diesel fuel has sent shockwaves throughout the American economy.