Guidelines for optimal design of electron acceptor injection wells to enhance bioremediation of contaminated groundwater

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

The finite element model METABIOTRANS, which simulates the fate and transport of contaminants in the subsurface, is used to identify general guidelines for the optimal design of electron acceptor injection wells to enhance bioremediation of contaminated groundwater aquifers. Several scenarios were simulated to examine the sensitivity of remediation effectiveness to the number and locations of wells and injection rates of electron acceptors. Results show that an injection well placed near the plume core, where highest contaminant concentrations exist, is always desired. The nearest injection well to the source zone caused higher stimulation to bacterial growth than further downgradient injection wells. It also exhibited longer resident time for the electron acceptors in the aquifer; and therefore yielded higher biodegraded contaminant mass. Higher injection rates of electron acceptors are not always needed to increase bioremediation efficiency. This should be noticed in real practices of groundwater remediation design.

Original languageEnglish
Title of host publicationGQ10
Subtitle of host publicationGroundwater Quality Management in a Rapidly Changing World
Pages346-349
Number of pages4
Publication statusPublished - 2011
Event7th International Groundwater Quality Conference: Groundwater Quality Management in a Rapidly Changing World, GQ10 - Zurich, Switzerland
Duration: Jun 13 2010Jun 18 2010

Publication series

NameIAHS-AISH Publication
Volume342
ISSN (Print)0144-7815

Other

Other7th International Groundwater Quality Conference: Groundwater Quality Management in a Rapidly Changing World, GQ10
Country/TerritorySwitzerland
CityZurich
Period6/13/106/18/10

Keywords

  • Bioremediation
  • Electron acceptors
  • Groundwater
  • Modelling

ASJC Scopus subject areas

  • General Earth and Planetary Sciences

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