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Books > Professional & Technical > Energy technology & engineering > Alternative & renewable energy sources & technology
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Waste-to-Energy (WtE) (Hardcover)
Loot Price: R5,052
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Waste-to-Energy (WtE) (Hardcover)
Expected to ship within 12 - 19 working days
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Shale gas is natural gas that is tightly locked within low
permeability sedimentary rock. Recent technological advances are
making shale gas reserves increasingly accessible and their
recovery more economically feasible. This resource is already being
exploited in South Africa, China, the United States and Canada.
Shale gas is being produced in large volumes, and will likely be
developed in coming years on every continent except Antarctica.
Depending on factors such as future natural gas prices and
government regulations, further development of shale gas resources
could potentially span many decades and involve the drilling of
tens of thousands of hydraulically fractured horizontal wells. This
development is changing long-held expectations about oil and gas
resource availability; several observers have characterized it as a
game changer. Abundant, close to major markets, and relatively
inexpensive to produce, shale gas represents a major new source of
fossil energy. However, the rapid expansion of shale gas
development over the past decade has occurred without a
corresponding investment in monitoring and research addressing the
impacts on the environment, public health, and communities. The
primary concerns are the degradation of the quality of groundwater
and surface water (including the safe disposal of large volumes of
wastewater); the risk of increased greenhouse gas (GHG) emissions
(including fugitive methane emissions during and after production),
thus exacerbating anthropogenic climate change; disruptive effects
on communities and land; and adverse effects on to human health.
Other concerns include the local release of air contaminants and
the potential for triggering small- to moderate-sized earthquakes
in seismically active areas. These concerns will vary by region.
The shale gas regions can be found near urban areas, presenting a
large diversity in their geology, hydrology, land uses, and
population density. The phrase environmental impacts from shale gas
development masks many regional differences that are essential to
understanding these impacts.
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