|
|
|
| Simulation on remediation of 2,4-DNT in groundwater by zero-valent iron |
|
|
|
|
Abstract The removal effect of aqueous-phase 2,4-DNT by zero-valent iron and the degradation kinetics parameters were investigated by laboratory tests. Visual Modflow was used to simulate the removal effect of 2,4-DNT in groundwater by using permeable reactive barrier (PRB) technology with zero-valent iron(ZVI-Fe0) as reactive material and estimate its feasibility at a hypothetical site. The results showed that the pollution plume was effectively controlled and reduced by the technology. 8.76×104 kg ZVI should be consumed to remove 1.46×104kg 2,4-DNT after four years’ contamination. The simulation also showed that as the increasing of the hydraulic conductivity, more pollutant flowed downstream due to the insufficiency contact of 2,4-DNT and ZVI. Numerical simulation is a effective approach to evaluate the remediation efficiency of PRB and determine the parameters of PRB.
|
|
Received: 11 September 2012
|
|
|
|
|
|
|
