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Coupled Abiotic–Biotic Mineralization of 2,4,6-Trinitrotoluene (TNT) in Soil Slurry

Paul S. Schradera and Thomas F. Hessb,*

a Department of Environmental and Chemical Engineering, Yale University, New Haven, CT 06520
b Center for Hazardous Waste Remediation and Research, University of Idaho, Moscow, ID 83844-0904



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  		Fig. 1. Mineralization of TNT (5000 mg kg–1) in modified Fenton reactions comparing abiotic with coupled abiotic–biotic treatments in sandy soil with (A) 10% soil slurry solution and 1470 mM H2O2 and (B) 20% soil slurry solution and 1470 mM H2O2. Abiotic reaction alone (•); abiotic + biotic reaction ({circ}). Arrow indicates time of application of biomass. Error bars on symbols indicate standard error of means (n = 3, p = 0.05); where absent, bars fall within symbols. All biotic reactions were conducted after solution neutralization.

 


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  		Fig. 2. Mineralization of TNT (5000 mg kg–1) in modified Fenton reactions comparing abiotic with coupled abiotic–biotic treatments in silt loam soil with (A) 5% soil slurry solution and 294 mM H2O2 and (B) 5% soil slurry solution and 1470 mM H2O2. Abiotic reaction alone (•); abiotic + biotic reaction ({circ}). Arrow indicates time of application of biomass. Error bars on symbols indicate standard error of means (n = 3, p = 0.05); where absent, bars fall within symbols.

 




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