Environmental Geotechnology Bioremediation of Nebraska Sites Adam Charlesworth Lorato S. Tshaakane_Ditiro.

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Presentation transcript:

Environmental Geotechnology Bioremediation of Nebraska Sites Adam Charlesworth Lorato S. Tshaakane_Ditiro

History of Site Used by Blaine Naval Ammunition In the 1942 for 15 years Producing U.S Navy ammunition

Problems Contaminates of Ground water by plumes Mostly TCE (Trichloroethylene) Contaminate does not pass the confining clay layer

Solutions Use the In-situ Bioremediation method - Breaking living organism to a less toxic substance

Method Horizontal well installed down to the contaminates. Natural gas & triethyl phosphate (TEP) injected through the wells Indigenous micro-organisms rise

Method (Continuos) Micro-organisms produce enzymes to metabolise methane One of the produced enzymes breaks TCE down to the TCE-epoxide.

Method (Continuos) TCE - epoxide breaks further into carbon dioxide and chloride salts

Why Bioremediation method It is Cheaper methods depletes the ground water as well

The End