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{ BIO NATIONAL CORPORATION <br /> 2 AIR POLLUTION CONSIDERATIONS <br /> 2.1 The following data is an explanation of the air pollution parameters <br /> when dealing with bioremediation of hydrocarbons. <br /> Since bioremediation consists of oxidative reduction of organic contaminants, <br /> an air supply is needed. <br /> 2.1.1 Because of the nature of the microbes, the lighter ends are broken <br /> down preferentially, and therefore yield a lesser problem to <br /> volatilization. <br /> 2.1.2 Since the process is biological, it will be operated at temperatures <br /> that are low enough to minimize volatilization. <br /> 2.1.3 By gravity and capillary action, the aerated watery inoculum is <br /> spread from the top, into the soil. The microbes act quite efficiently on <br /> the entrained hydrocarbons, yielding mostly water and carbon dioxide as <br /> a by-product. <br /> 2 1.4 The system kinetics are so low that there is expected to be an <br /> insignificant release of volatiles. <br /> 2 1.5 Covering the contaminants with a plastic membrane is not <br /> recommended. Minimal volatile control will be achieved because the <br /> surface will be water moist, the microbes digest lighter fractions first <br /> and a negative pressure is placed on the material by the aeration <br /> system, which is drawn back to the bioreactor for controlled release. <br /> 2.2 MONITORING VOLATILES RELEASED FROM THE BIOREACTOR HEAD SPACE <br /> Since a negative pressure will be maintained on the material, exhausting <br /> through the aerated inoculum and past a condenser plate, its the bioreactor <br /> and out the top vent, we will monitor the exhaust with a portable gas <br /> detection instrument. <br /> If the system is exhausting volatiles above the required limit, a carbon <br /> canister or ozone air scrubber, till be attached to the system exhaust to <br /> meet emissions requirements. <br /> 2 THORS01 <br />