CAJ | 학술논문

以菲、蒽和芘为研究对象,通过淋溶实验考察抑菌和未抑菌条件下三者在土壤中的迁移过程,结果表明,微生物的存在抑制PAHs淋出:抑菌条件下180 d时菲、蒽和芘的淋出率分别为8.74%、28.53%和13.56%,未抑菌条件下240 d时菲、蒽和芘的淋出率分别为0.95%、1.47%和0.37%.抑菌和未抑菌条件下3种PAHs均易吸附于表层土壤中:淋滤240 d时,约75%的菲分布在进水端0～2 cm;超过90%的蒽分布在进水端10 cm以内;85%的芘分布在4 cm以内;微生物通过阻滞作用和降解作用影响PAHs的迁移,菲、蒽和芘在土壤中都能被土著微生物降解;60 d以前土柱中PAHs降解以好氧降解为主,60 d以后, PAHs的生物降解转为厌氧降解.
이비、은화비위연구대상,통과림용실험고찰억균화미억균조건하삼자재토양중적천이과정,결과표명,미생물적존재억제PAHs림출:억균조건하180 d시비、은화비적림출솔분별위8.74%、28.53%화13.56%,미억균조건하240 d시비、은화비적림출솔분별위0.95%、1.47%화0.37%.억균화미억균조건하3충PAHs균역흡부우표층토양중:림려240 d시,약75%적비분포재진수단0～2 cm;초과90%적은분포재진수단10 cm이내;85%적비분포재4 cm이내;미생물통과조체작용화강해작용영향PAHs적천이,비、은화비재토양중도능피토저미생물강해;60 d이전토주중PAHs강해이호양강해위주,60 d이후, PAHs적생물강해전위염양강해.
The transport of selected polycyclic aromatic hydrocarbons(PAHs),phenanthrene (Phe),anthracene (Ant) and pyrene (Pyr),under conditions with and without bacteriostasis was studied through leaching experiments.The results showed that ,microorganisms inhibited leaching of PAHs with a leaching rate of 8.74%,28.53% and 13.56% of Phe,Ant and Pyr respectively after 180 days' leaching under the condition with bacteriostasis and 0.95%,1.47% and 0.37% after 240 days' leaching under the condition without bacteriostasis. The tested 3 PAHs tended to be attached on the top of the soil under both conditions with and without bacteriostasis with 75% of Phe distributing at 0-2 cm from the feeding side,above 90% of Ant distributing at 10 cm from the feeding side and 85% of Pyr distributing at 4 cm from the feeding side after 240 days' leaching.Microorganisms affected the PAHs transport by blocking and degrading.All of Phe,Ant and Pyr could be biodegraded.Before 60 d,PAHs were mainly degraded through the aerobic process while through the anaerobic process after 60 d.