Modeling for Volatilization and Bioremediation of Toluene-contaminated Soil by Bioventing

隋红; 李鑫钢

doi:10.1016/S1004-9541(11)60174-2

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Modeling for Volatilization and Bioremediation of Toluene-contaminated Soil by Bioventing

Updated：2026-01-06

- Modeling for Volatilization and Bioremediation of Toluene-contaminated Soil by Bioventing
- Chinese Journal of Chemical Engineering Vol. 19, Issue 2, Pages: 340-348(2011)
- Affiliations：
  
  1. National Engineering Research Center for Distillation Technology, Tianjin University,Tianjin,China,300072
  2. School of Chemical Engineering and Technology, Tianjin University,Tianjin,China,300072
- Author bio：
- Funds：
- DOI：10.1016/S1004-9541(11)60174-2
  CLC：
- Published：2011
- Accepted：
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SUI Hong, LI Xingang. Modeling for Volatilization and Bioremediation of Toluene-contaminated Soil by Bioventing[J]. , 2011, 19(2): 340-348.
DOI：

SUI Hong, LI Xingang. Modeling for Volatilization and Bioremediation of Toluene-contaminated Soil by Bioventing[J]. , 2011, 19(2): 340-348. DOI： 10.1016/S1004-9541(11)60174-2.

摘要

Abstract

A two-dimensional numerical model is developed to simulate the flow

transport and biodegradation of toluene during bioventing (BV) processes in the unsaturated zones.The simulation for a single well BV system is used to illustrate the effect of air injection rate on remediation efficiency.The air is injected into the vadose zone to create a positive pressure.Simulation results show that air injection rate is a primary parameter governing the dispersal

redistribution and surface loss of contaminant.At injection rates of 81.504 m

·d

-1

(Run 1) and 407.52 m

·d

-1

(Run 2)

the total removed mass of toluene is 169.14 kg and 170.59 kg respectively.Ratios of volatilization to bio-degradation in Run 1 and Run 2 are 0.57:1 and 0.89:1

respectively

indicating that lower air injection rate enhances the biodegradation efficiency greatly.Air injection rate should be optimized to meet oxygen demand and to minimize the operational cost.

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