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Anaerobic Degradation of Chlorinated Ethenes in a Low-pH, High ...

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Microcosm Analysis<br />

6.0<br />

4.0<br />

µM<br />

2.0<br />

Test #1: Killed control<br />

DCE<br />

TCE<br />

6.0<br />

4.0<br />

µM<br />

2.0<br />

Test #2: Lactoil & m<strong>in</strong>eral amended, B12, <strong>pH</strong> 7,<br />

<strong>in</strong>digenous population<br />

ppm<br />

SO4<br />

TCE<br />

DCE<br />

2000 6.0<br />

1600<br />

4.0<br />

1200<br />

ppm µM<br />

SO4<br />

800<br />

2.0<br />

400<br />

Test #3. Lactoil & m<strong>in</strong>eral amended B12, <strong>pH</strong> 7<br />

Bioaug days w/<strong>High</strong> Salt Culture<br />

bio<br />

aug<br />

day 19<br />

|<br />

ppm<br />

SO4<br />

TCE<br />

|<br />

bio<br />

aug<br />

day 56<br />

|<br />

DCE<br />

VC<br />

2000<br />

1600<br />

1200<br />

ppm<br />

SO4<br />

800<br />

400<br />

0.0<br />

VC<br />

0 20 40 days 60 80 100<br />

0.0<br />

VC<br />

FDSA<br />

0 20 40 days 60 80 100<br />

0<br />

0.0<br />

Ethene<br />

0 20 40 days 60 80 100<br />

0<br />

6.0<br />

4.0<br />

µM<br />

2.0<br />

ppm SO4<br />

DCE<br />

Test #4. Lactoil & m<strong>in</strong>eral amended<br />

Accelerite, <strong>pH</strong> 6.1, <strong>in</strong>digenous population<br />

TCE<br />

2000 6.0<br />

1600<br />

4.0<br />

1200<br />

µM<br />

ppm<br />

SO4<br />

800<br />

2.0<br />

400<br />

DCE<br />

Test #5. Lactoil & m<strong>in</strong>eral amended B12, <strong>pH</strong> 6.1.<br />

low <strong>pH</strong> culture & high salt culture<br />

bioaug<br />

day 19<br />

|<br />

ppm<br />

SO4<br />

TCE<br />

bioaug<br />

day 56<br />

|<br />

2000<br />

1600<br />

1200<br />

ppm<br />

SO4<br />

800<br />

400<br />

0.0<br />

14<br />

VC<br />

0 20 40 days 60 80 100<br />

0<br />

0.0<br />

VC<br />

0 20 40 days 60 80 100<br />

0

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