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Handbook of Solvents - George Wypych - ChemTech - Ventech!

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23.1 Natural attenuation <strong>of</strong> chlorinated solvents 1593<br />

Aerobic oxidation<br />

In situ & laboratory<br />

In situ studies a<br />

Laboratory<br />

Aerobic cometabolism<br />

Field & laboratory<br />

In situ studies a<br />

Laboratory<br />

Overall aerobic<br />

Aerobic/anaerobic (field<br />

studies)<br />

Reductive dechlorination<br />

Field & laboratory<br />

Field/in situ studies a<br />

Laboratory<br />

Anaerobic oxidation<br />

Field & laboratory<br />

Field/in situ studies a<br />

Laboratory<br />

Number <strong>of</strong><br />

rates<br />

Number <strong>of</strong><br />

reported<br />

rates<br />

Number <strong>of</strong><br />

calculated<br />

rates b<br />

5<br />

3<br />

2<br />

2<br />

2<br />

0<br />

3<br />

1<br />

2<br />

mean<br />

0.476<br />

0.885<br />

0.187<br />

standard<br />

deviation<br />

0.787<br />

0.843<br />

0.250<br />

90 th<br />

percentile<br />

1.680<br />

1.820<br />

0.399<br />

geometric<br />

mean c<br />

0.476<br />

0.885<br />

0.187<br />

range<br />

reported<br />

rates<br />

0.081-1.96<br />

0.281-1.96<br />

0.081-0.434<br />

4 4 0 0.000 0.003 0.006 0.000 0-0.008<br />

25<br />

17<br />

8<br />

18<br />

13<br />

5<br />

7<br />

4<br />

3<br />

0.004<br />

0.002<br />

0.014<br />

0.048<br />

0.031<br />

0.069<br />

0.069<br />

0.013<br />

0.117<br />

0.004<br />

0.002<br />

0.014<br />

0-0.200<br />

0-0.130<br />

0.001-0.200<br />

DCE (all other isomers)<br />

All studies<br />

Aerobic oxidation<br />

In situ & laboratory<br />

In situ studies<br />

27 14 13 0.149 0.302 0.666 0.003 0-1.150<br />

a<br />

Laboratory<br />

Aerobic cometabolism<br />

Field & laboratory<br />

In situ studies a<br />

8 2 6 0.458 0.416 0.845 0.002 0-1.150<br />

4 0 4 0.720 0.316 1.012 0.670 0.390-1.150<br />

Laboratory<br />

Overall aerobic<br />

Aerobic/anaerobic (field<br />

studies)<br />

Reductive dechlorination<br />

4 2 2 0.196 0.347 0.521 0.000 0-0.714<br />

Field & laboratory<br />

Field/in situ studies a<br />

19 12 7 0.019 0.061 0.012 0.004 0.001-0.270<br />

16 12 4 0.003 0.001 0.005 0.003 0.001-0.006<br />

Laboratory<br />

3 0 3 0.101 0.147 0.220 0.039 0.010-0.270

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