PAH로 오염된 토양의 미생물 분해 가속화 연구

Bioremediation of hazardous hydrophobic organic compounds, such as polycyclic aromatic hydrocarbons (PAHs), is a major environmental concern due to their toxic and carcinogenic properties. Bue to their low solubility in water, the compounds are microbiologically persistent. This work investigates optimal conditions to enhance the biodegradation of phenanthrene in water and soil-slurry systems. Biodegradation tests were performed with three different types of supplements: glucose as a general carbon source, salicylate as an enzyme inducer, and Triton X-100 as a surfactant. The tests indicate that glucose and Triton X-100 were not very effective to increase biodegradation rate, even though the number of microorganisms are highly increased in the case of glucose addition. Salicylate accelerated biodegradation of phenanthrene, but the addition above optimal concentration inhibited microbial growth. Salicylate is considered to be an attractive alternative for the successful bioremediation of PAH-contaminated soil.