| Title |
A study on the Fate and Transport of TNT and its Metabolites in Phytoremediation |
| Authors |
성기준 ( Seong Gi Jun ) ; 장윤영 ( Jang Yun Yeong ) |
| Keywords |
Phytoremediation; Trinitrotoluene; Model Application; Sequential Degradation; Fate and Transport; 식물상 복원공법; 모형 적용; 연속적 분해반응; 거동 특성 |
| Abstract |
The fate and transport of trinitrotoluene (TNT) and its metabolites, amino-dinitrotoluene (ADNT) that can be produced by sequential reactions in phytoremediation were investigated using a two-region phytoremediation model. The data acquired from the experiments conducted for 50 days at Indian mallow planted soil whose top 20 ㎝ of 1 m PVC column was packed with TNT contaminated soil at concentration of 126 ㎎/㎏, were used for model applications. Although the results showed that increase of microbial activity in the planted soil could enhanced degradation of TNT and ADNT, the decrease of mass transfer rate between soil water and solid phases was also observed. Therefore, bioavailability in soil was believed to be an important factor affecting the overall fate of TNT and its metabolites. The enhanced degradation due to increased microbial activity, decreased mass transfer rate due to the root exudates, and contaminant retardation due to root water uptake suggested that phytoremediation could play an important role for reducing TNT and its metabolites leaching to the ground water and/or nearby water system. |