2013•China Environmental ScienceRequires access
Simulation on remediation of 2,4-DNT in groundwater by zero-valent iron.
Zhifei Ma, Xinying Lian, Jinbao Zhang, Yonghai Jiang, Queping Yang, LüFengChun, Beidou Xi, Yang Yu
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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.