TABLE OF CONTENTS

CHAPTER / PAGE

List of Tables v
List of Figures vi
Abstract vii

1. INTRODUCTION 1
1.1 Significance of the Study 1
1.2 Objectives 3
1.3 Date and Place of Study 4
1.4 Limitations of the Study 4

2. REVIEW OF LITERATURE 5
2.1 Chemical Oxygen Demand (COD) 5
2.2 Adsorption 7
2.3 Activated Carbon 12
2.4 Wastewater Treatment by Activated Carbon Adsorption 14
2.5 Coconut Shell Activated Carbon 17

3. MATERIALS AND METHODS 21
3.1 Materials 21
3.2 Equipment 21
3.3 Methods 24
3.3.1 Sample Collection and Preservation 24
3.3.2 Characterization of the Pasig River Water Samples 24
3.3.3 Characterization of Activated Carbon 25
3.3.4 Determination of Equilibrium Contact Time 27
3.3.5 Determination of Optimum pH 27

4. RESULTS AND DISCUSSION 28
4.1 Characteristics of the Pasig River Samples 28
4.2 Characteristics of the AC 29
4.3 Equilibrium Contact Time 30
4.4 Optimum pH for Maximum Adsorption 32
4.5 Kinetics of Adsorption 34
4.6 Minimum Amount AC that will give Satisfactory COD Removal 37

5. SUMMARY AND CONCLUSIONS 39

6. RECOMMENDATIONS 40

7. REFERENCES 41

8. APPENDICES 43