LIST OF FIGURES


Figure Page

3-1 Structural formulas for some common PCP
 degradation products........................ 32

4-1 Experimental setup for hydraulic conductivity test 39

4-2 Experimental setup for conservative tracer test.. 46

4-3 Experimental setup for column degradation studies 47

5-1 Phenol sorption isotherms on plain soil........... 65

5-2 Phenol sorption isotherms on soil with sludge.... 66

5-3 2,4-DCP sorption isotherms on plain soil.......... 67

5-4 2,4-DCP sorption isotherms on soil with sludge... 68

5-5 PCP sorption isotherms on plain soil.............. 69

5-6 PCP sorption isotherms on soil with sludge........ 70

5-7 Column breakthrough curves for phenol, 2,4-DCP
 and PCP ......................................... 74

5-8 Phenol degradation curves in single-compound
 systems (initial concentration 5 ppm) ........ 79

5-9 Phenol degradation curves in single-compound
 systems (initial concentration 1 ppm) ........ 80

5-10 2,4-DCP degradation curves in single-compound
 systems (initial concentration 5 ppm) ........ 83

5-11 2,4-DCP degradation curves in single-compound
 systems (initial concentration 1 ppm) ........ 84

5-12 PCP degradation curves in single-compound
 systems (initial concentration 5 ppm) ........ 85

5-13 PCP degradation curves in single-compound
 systems (initial concentration 1 ppm)........ 86

5-14 PCP degradation curves using bacteria which are
 acclimated to phenol and 2,4-DCP
 (initial concentration 5 ppm) ................ 87