Background Information
Environmental
As the human population exponentially increases, the
environments capacity to accept waste will undoubtedly be exceeded. When human
waste is released into aqueous systems, the nitrogenous material facilitates the growth of
algae. Algae blooms, or large populations of algae, act to cover the surface of the
water, blocking sunlight and preventing the proliferation of seaweed. In addition,
the increased eutrophication
depletes the amount of oxygen in the water. Deoxygenation occurs as the bacteria in
the aqueous environment extract dissolved oxygen to fuel the decomposition of
photosynthetic organisms. In time, this
creates anoxic conditions, killing
fish, manatees, and other animals that depend on oxygen for cellular respiration.
These conditions are fairly common and have been observed in such places as Lake Michigan
and the Chesapeake Bay.
lthough some would argue thatb the problem is inconsequential, there is
evidence that accelerated eutro phication has been responsile for the deaths of as
many as 151 manatees in southwest |
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Curtesy of
Ficus USF
If we do not change the way we manage our water, the natural beauty of Florida's lakes and
rivers will be lost. |
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Florida; surprisingly more deaths are caused
by eutrophication than by boats. |
| Air Pollution The greenhouse effect is a natural
phenomenon that helps to regulate earth's temperature. Greenhouse gases act like the
glass in an arboretum,
entrapping radiant heat while allowing ambient light to pass through the atmosphere.
Two of the major greenhouse gases are carbon dioxide and methane. Of these gases,
carbon dioxide accounts for over one-half the strengthening of the greenhouse effect at
present, while methane accounts for approximately one-sixth. The greenhouse effect
perpetrates increases in the torridity
of the atmosphere, melting the polar ice caps and creating world-wide environmental
problems. |
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Today, nearly 85 percent of the world's 11 terawatts of energy is
generated by the combustion of fossil fuels. The problem is so serious that some
researchers believe that in order to reduce carbon emissions to a stable level by the
year 2050 there needs to be a tenfold increase in carbon-emission-free power
generation. Progressive power plants have begun using biomass conversions to
produce energy while effectively reducing the levels of carbon dioxide
emissions.
Methane,
although less common than carbon dioxide, is a potent greenhouse gas. As quantities
of anthropogenic gases
increase, the expense of abating methane emissions will also rise. Using biomass
conversion prevents methane emissions from landfills, capturing the gas that
indigenous anaerobic bacteria would change into methane, which would escape into the
atmosphere. Therefore, this is both an economically and environmentally beneficial
process. By utilizing anaerobic digestion and harnessing methane
gas to use as fuel, waste water treatment plants can meet government
standards as well as contribute to the environmental conservation
effort. |
| Used
with Permission One of the
major impacts of the ozone changes we attempt to predict is the effect they will have on
the amount of biologically harmful ultra-violet (UV) radiation reaching the Earth's
surface. |
| Water Pollution As Floridas population increases, domestic
wastewater becomes a major source of pollution around densely populated urban areas,
primarily in central and southern Florida. Groundwater
contaminated with human waste seeps into the rivers and springs, which causes significant
eutrophication and detrimental algael blooms. Biomass to bio-gas conversions using
anaerobic bacteria could potentially solve these problems. In addition to the
improvements in environmental air quality, biomass conversions also have immeasurable
ramifications in the area of water quality. This process can effectively stop the
growth of algae blooms by substantially decreasing the portion of biomass that is
allocated to landfills. This stops the formation of landfill wells that can leak
into the aquifer. |
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The Floridian Aquifer is
subject to direct infiltration or discharge of pesticides, fertilizers, and high-nitrate
sewage via overland runoff. Major problems for the Floridian Aquifer result from the
unconfined area in which contaminating wastes are applied to the land surface. In
addition, nearby surface waters receive large quantities of nutrient-rich runoff.
Pollutants carried to the river by overland runoff from farms and dairies enter the
Floridian Aquifer by river water intrusion. This affects 44% of all consumed
groundwater in Florida. One hundred percent of water which is provided by public
works facilities comes from the Floridian Aquifer, threatening human and aquatic
life. Utilizing biomass conversions techniques epurate water, resulting in potable water.
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Curtesy of Ficus USF
Freshwater aquifers are Florida's primary source of drinkingwater and are tapped by
drilling wells. However, infiltration by pollutants may deprive us of readily
available water in a time when resources are scarce. |
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