Bioremediation
Bioremediation is preferred when a client has time,
space and little money to eliminate hydrocarbons from soil or water. Since it
was developed in the early 1990’s, System E.T.20 has exceeded the
performance of its competitors for low cost, efficiency and simplicity. Its
non-water-soluble nutrient allows it to be used on shoreline oil-spills, river
oil-spills and in rain-prone areas of the world.
Comparative Results of System E.T.20 can be examined on
the U.S. EPA’s NCP Product Schedule; http://www.epa.gov/oem/content/ncp/tox_tables.htm#bio.
Since it was developed in 1990, System E.T.20 has been commercially used on
millions of cubic meters of oil contaminated soil.
System E.T.20 is comprised of
proprietary protocols, a proprietary nitrogen formulation and indigenous
bacteria or a naturally occurring, aggressive blend of bacteria. E.T.20’s
activation protocols are based on soil chemistry, contaminant volume, oil types
and oil concentrations for each project. This protocol overcomes obstacles to
success normally encountered by bioremediation products utilizing water soluble
nitrogen sources like urea, DAP and MAP.
Nitrogen is the major product cost of oil
bioremediation. E.T.20’s proprietary nitrogen type is designed to reduce overall
project costs including time on the job and equipment while enhancing the
bioremediation rate of oil. This nitrogen is a non-water soluble polymer that
sticks to oil upon contact. This ‘sticking’ or oleophilic factor prevents oil
leaching and accelerates degradation by placing oil and E.T.20’s bacteria in
close proximity accelerating the oil degradation process. E.T.20’s non-water
soluble nitrogen will not dissolve away due to rain or soil irrigation. Because
of its polymerized structure, it releases nitrogen only to bacteria developed
using E.T.20’s protocols.
A contractor using E.T.20 nitrogen and following our protocols
will not add to the nitrification of local ground water, a growing environmental
issue. Compared to water-soluble nitrogen, far less System E.T.20 nitrogen is
required to degrade a given volume of oil easing the stress of logistics as well
as costs at a project.
System microorganisms: Indigenous organisms naturally
adapted to existing conditions are ideal for System E.T.20. If indigenous
bacteria are not available, a blend of naturally occurring bacteria selected for
aggressive consumption of alkanes to C45 and most PAHs can be supplied with
System E.T.20’s nitrogen. Due to bioactivation protocols used, E.T.20 bacteria
(indigenous or supplied) have the unique ability to access the E.T.20 nitrogen,
allowing these bacteria to become the dominant organism population in the biota.
In the presence of its hydrocarbon food, these bacteria reach and sustain
population densities in excess of 109 CFUs per volume. This high density
promotes greater frequency of contact with oil molecules, a prerequisite for
bioremediation. The density of effective oil degrading bacteria combined with
E.T.20 nitrogen’s oleophilic ability to combine bacteria and oil result in
faster degradation rates. Faster degradation rates mean less project time, lower
equipment, labor and administrative costs.
Protocol: Bacteria are grown onsite using a unique
activation protocol that eliminates rejection or the killing of
System E.T.20 bacteria by hostile indigenous organisms. The protocol also
maximizes the bacteria’s effectiveness with targeted hydrocarbon types. System
E.T.20 can be applied with commonly-available construction equipment.
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