ENGLISH TASK " RENEWABLE SOURCE & UNRENEWABLE SOURCE "

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Renewable Resource is a natural resource which

can replenish with the passage of time, either through

biological reproduction or other naturally recurring

processes. Renewable resources are a part of Earth's

natural environment and the largest components of its

ecosphere. A positive life cycle assessment is a key

indicator of a resource's sustainability.

EXPLANATION

BIOMASS WATER GEOTHERMAL WIND

SOLAR BIOFUEL BIOETHANOL BIODIESEL

BIOGAS HYDROPOWER BIOPLASTICS BIOASPHALT

RENEWABLE

RESOURCES

BIOMASS

WATER

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Water can be considered a renewable material when carefully

controlled usage, treatment, and release are followed. If not, it would

become a non-renewable resource at that location. For example,

groundwater is usually removed from an aquifer at a rate much

greater than its very slow natural recharge, and so groundwater is

considered non-renewable. Removal of water from the pore spaces

may cause permanent compaction (subsidence) that cannot be

renewed. 97.5% of the water on the Earth is salt water, and 3% is

fresh water; slightly over two thirds of this is frozen in glaciers and

polar ice caps. The remaining unfrozen freshwater is found mainly as

groundwater, with only a small fraction (0,008%) present above

ground or in the air.

GEOTHERMAL

Geothermal energy comes from harnessing heat from the

Earth. A large utility company, for example, can directly use a

geothermal reservoir to drive generators and produce electricity for

their municipality. In contrast, residential heat pumps use the

shallow ground temperature of the Earth to heat and cool a home on

a smaller scale. The shallow ground temperature remains between 50

and 60 degrees Fahrenheit. Other applications put geothermal heat

to use in commercial buildings, roads, agriculture and industrial

factories.

WIND

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Wind is just moving air created as the sun heats the Earth's

surface. As long as the sun is shining, the wind remains an

infinite, renewable resource. Wind power is clean energy

because wind turbines do not produce any emissions. The classic

Dutch windmill harnessed the wind's energy hundreds of years

ago. Modern wind turbines with three blades dot the landscape

today, turning wind into electricity. Although wind only

generated little power in the United States in 2009, it is the

fastest-growing source of new electric power, according to U.S.

Energy Information Administration.

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A biofuel is a type of fuel whose energy is

derived from biological carbon fixation. Biofuels

include fuels derived from biomass conversion, as

well as solid biomass, liquid fuels and various

biogases.

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Bioethanol is an alcohol made

by fermentation, mostly from

carbohydrates produced in

sugar or starch crops such as

corn, sugarcane or switchgrass.

Biodiesel is made from

vegetable oils and animal fats.

Biodiesel is produced from oils or fats

using transesterification and is the

most common biofuel in Europe.

BIODIESEL

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Biogas is methane produced by the

process of anaerobic digestion of organic

material by anaerobes., etc. is also a

renewable source of energy.

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Hydropower is energy derived from the movement of water in

rivers and oceans, originally used for irrigation and the operation of

various mechanical devices. Since the early 20th century, the term is

used almost exclusively in conjunction with the modern development of

hydro-electric power. Conventional hydroelectric power involves

creating a dam, and using the resulting water force to turn a water

turbine and generator. Other electricity generating methods are run-

of-the-river hydroelectricity, which captures the kinetic energy in

rivers or streams, without the use of dams, and pumped-storage

hydroelectricity, which stores water pumped during periods of low

demand to be released for generation when demand is high.

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Bioplastics are a form of plastics derived from

renewable biomass sources, such as vegetable fats and

oils, lignin, corn starch, pea starch or microbiota. The

most common form of bioplastic is thermoplastic

starch. Other forms include Cellulose bioplastics,

biopolyester, Polylactic acid, and bio-derived

polyethylene.

BIOPLASTICSBACK

BIOASPHALT

Bioasphalt is an asphalt alternative made from non -

petroleum based renewable resources. Manufacturing

sources of bioasphalt include sugar, molasses and rice,

corn and potato starches, and vegetable oil based

waste. Asphalt made with vegetable oil based binders

was patented by Colas SA in France in 2004.

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