Abstract
To protect groundwater resources against pesticides,
bioaugmentation with microorganisms immobilized in solid carriers has been considered as a soil remediation strategy. We have developed a mathematical model to assess this bioremediation approach to remove the pesticide linuron from soils at various water saturation levels. A bacterium mineralizing linuron is heterogeneously distributed within a 3-D model domain in spherical hotspots
of 2-mm diameter size. Diffusion and advection due to infiltration are the transport processes, and microbial growth follows first order kinetics. Without advection, a bead spacing distance of 5 mm at saturated conditions is
required to achieve a bioremediation goal of 90% linuron mineralization in 1 year. The gas phase is an important parameter affecting the transport of linuron, however, linuron biodegradation is growth kinetics limited within a
broad water saturation range. It is hypothesized that the selection of faster degraders can compensate for high amounts of required beads.
Original language | English |
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Title of host publication | GQ10 : CD-ROM |
Volume | Keynote S6 |
Publisher | IAHS Press |
Publication date | 2010 |
Publication status | Published - 2010 |
Event | Groundwater Quality Management in a Rapidly Changing World : 7th International Groundwater Quality Conference - Zurich, Switzerland Duration: 13 Jun 2010 → 18 Jun 2010 Conference number: 7 http://www.eawag.ch/medien/veranstaltungen/events/gq2010/index_EN |
Conference
Conference | Groundwater Quality Management in a Rapidly Changing World : 7th International Groundwater Quality Conference |
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Number | 7 |
Country/Territory | Switzerland |
City | Zurich |
Period | 13/06/2010 → 18/06/2010 |
Internet address |