Correction to 7% oxygen

Standards of Performance for New Stationary Sources-emissions limits for municipal waste combustors 0.080 mg/m3 or 15% of the potential mercury emission concentration corrected to 7% oxygen 40 CFR 60, Subpart Cb EPA 1995a... 

Inlet loading = 1.17gr/dscf corrected to 7% oxygen Outlet loading = 0.015 gr/dscf corrected to 7% oxygen Flue gas flowrate = 20,000 acfm... 

Many current waste regulations require that emissions be corrected to 7% oxygen in the stack on a dry basis. The correction formula provided in the regulations (see 40 CFR Part 264.343) is as follows ... 

Primary RCRA regulations call for a DRE of at least 99.99% of all POHCs. The regulations also require 99% removal of HCl from the incinerator flue gas or a maximum of 41b/h (1.8kg/h). Federal regulations require a maximum particulate emission of 0.08 gr/dscf corrected to 7% oxygen in the flue gas. In addition, many states require BACT (best available control technology). Metals emissions are dealt with in the next problem. 

Some state regulations limit stack emissions of particulate material from a hazardous waste incinerator to an outlet loading of 0.08 gr/dscf (grains of particulate per dry standard cubic foot of stack gas), corrected to 7% oxygen (or an approximate excess air level of 50%). 

Standard cubic foot), corrected to 7% oxygen (or an approximate excess air level of... 

Each of the four organic compounds makes up 5% (by weight) of the waste/fuel feed of 5000 Ib/h. The excess air is 35%. The stack gas flowrate, corrected to 7% oxygen and standard conditions (1 atm, 25°), is 21,300dscfm. 

Federal particulate standard is 0.08 gr/dscf corrected to 7% oxygen in the flue gas. 

When the indicator radionuclide has a half-life short with respect to the counting time, as in the determination of oxygen via 14 MeV neutron activation to produce 7.37 sec half-life16N, additional corrections to the above equations are required 18>. 

Direct Measurements—UVNIS Techniques. The conjugated diene (CD) formed among the polyene hydroperoxide products that are formed as a result of oxidation of polyunsaturated fatty acids (PUFAs) have a UV absorbance that can be monitored to follow the progress of the oxidation. The effect of antioxidants on the suppressed rate of product formation can be followed with time. For example, conjugated dienes from oxidation of linoleate lipid molecules absorb at 234 nm and can be monitored directly , or else after HPLC separation (via normal phase or reverse phase j of the individual isomers. In order to use these findings to calculate the antioxidant activity of phenols and relate it to oxygen uptake studies (equations 7 and 14), one also has to make a correction to account for loss of absorbance due to loss (from decomposition) of hydroperoxides (equation 22) . 

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