Biodegradation of Organic Compounds in Anti Traction Material

摘要

Biodegradation of polyacrylamide, acrylamide, and total petroleum hydrocarbons (TPH) in soil takes place under aerobic conditions. This work considers the fate and transport of acrylamide, polyacrylamide, and various constituents of TPH in a potential Anti Traction Material (ATM) that can be applied to soil and other surfaces. The hydrocarbon phase (TPH) in ATM contains kerosene-range compounds which were analyzed by gas chromatography. Experiments were conducted to study the evolution of CO_2 produced through biodegradation and to estimate time of disappearance of TPH in soil. An extraction procedure was formulated to carry out the optimal extraction of TPH from soil. Peaks in TPH are detected by gas chromatography with mass spectroscopy. Modeling of vapor pressures of TPH components of ATM was done to get an estimate of equilibrium partial pressures and to compare estimated gas phase equilibrium concentrations with the Recommended Exposure Limit of indoor air. A study of the removal of JP-8 from soil showed that higher molecular weight hydrocarbons were removed significantly faster in soil with an active microbial population than in soils treated to kill microorganisms, indicating that biodegradation could enhance the removal rate of these hydrocarbons. The present study was undertaken to obtain soil biodegradation data on TPH in ATM, which is being developed as a crowd-controlling agent.