Influence of low- and high-frequency heating on biodegrading microorganisms in soil: microbial degradation.
The influence of low-frequency (50 Hz) resistive and high-frequency (13.56 MHz, radio-frequency) dielectric heating in comparison to conventional heating on the microbial degradation of pollutants in soil was studied. The investigation of the biodegradation of model substances (benzoic acid, acetic acid, glucose, sodium acetate) added to a standard soil showed no significant influence of the electrical heating methods when compared with samples heated to the same temperature in a water bath. Therefore, a hindrance of the microbial degradation could be excluded as it was done for soil respiration in a previous study. This finding is especially relevant for the application of these electrical heating methods for thermally enhanced soil bioremediation as an option for making in situ or ex situ clean-up processes more efficient.
Ulf
U
Roland
Frank
F
Holzer
Frank-Dieter
FD
Kopinke
D018407:Bacterial Physiological Phenomena / Q000528:radiation effects*; D001673:Biodegradation, Environmental / Q000528:radiation effects; D004307:Dose-Response Relationship, Radiation; D006361:Heating / Q000379:methods*; D008872:Microwaves; D010101:Oxygen Consumption / Q000502:physiology* / Q000528:radiation effects; D011829:Radiation Dosage; D012987:Soil / Q000737:chemistry*; D012988:Soil Microbiology
D012987:Soil