Hyper-alkaline Waters in Calumet Wetlands (South Chicago, IL):

Transcription

1 Hyper-alkaline Waters in Calumet Wetlands (South Chicago, IL): Karel Waska and Melissa Lenczewski Northern Illinois University, Department of Geology and Environmental Geosciences

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4 Introduction Questions Methods Results Conclusion Future work 4/23 Chicago Calumet area

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12 Introduction Questions Methods Results Conclusion Future work 12/23 Roadcap et al.,2006, Groundwater 44(4):

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15 Introduction Questions Methods Results Conclusion Future work 15/23 All samples transported in ~ 5ºC and processed within one day

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17 Introduction Questions Methods Results Conclusion Future work 17/23 Roadcap et al.,2006, Groundwater 44(4):

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26 Introduction Questions Methods Results Future work Conclusion 16/29 CONSTRUCTED COLUMN EXPERIMENT: Started in December 2012 To determine remediation strategies Columns filled with sediment from site 1 and flushed with water from site 2 Different PRB (Permeable Reactive Barrier: dolomite gravel, quartz sand, Apatite II TM ) in different position inside the column (top or bottom) Incubation in two temperatures T = 4ºC and 25ºC

27 Introduction Questions Methods Results Future work Conclusion 17/29 CONSTRUCTED COLUMN EXPERIMENT: 8 columns in duplicates for the two temperature incubations: 1 natural control column 1 autoclaved ( kill ) control column 2 dolomite incubations (top or bottom of column) 2 quartz sand incubations 2 Apatite II TM incubations Monitoring influent and effluent on ph, geochemistry, and microbial activity

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36 Introduction Questions Methods Results Future work Conclusion 26/29 The image cannot be displayed. Your computer may not have enough memory to open the image, or the image may have been corrupted. Restart your computer, and then open the file again. If the red x still appears, you may have to delete the image and then insert it again.

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