MODELLING OF ADSORPTION EFFICIENCY FOR THE REMOVAL OF LEAD AND COPPER FROM WASTE WATER

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  • Department: Civil Engineering
  • Project ID: CVE0140
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Abstract 

The focus of this research work is to derive a model that will be used to obtain the adsorption efficiency of an adsorbent for the removal of lead and copper from waste water. To date, the prevalence of adsorption separation remains an aesthetic attention and consideration abroad the nations owning to its low cost, simplicity of design, ease of operation, insensitivity to toxic substances and complete removal of pollutants even from solutions. The data points for this work were collected from literature. Two numerical methods were used in deriving the model, both the multiple regression analysis for data formulation and the Gauss reduction methods for the solutions of the equation. In adsorption procedures, the effects of temperatures, effect of pH, effect of contact time and effect of adsorbent dosage must be available and can be easily implemented into the model equations. Results obtained showed an increase in the adsorption with increasing temperature, contact time, adsorbent dosage and pH. The coefficient of correlation R2 values indicates a very good fitness of the adsorption data signifying the application of the model is suitable for obtaining adsorption efficiency of an adsorbent for the removal of lead and copper in waste water treatment.



TABLE OF CONTENTS

Acknowledgement ii

Table of Contents iii

List of Tables vii

List of Figures viii

List of Abbreviations ix

List of Symbols x

Abstract xi

CHAPTER ONE

INTRODUCTION

1.1. Background of study ………………………………….. 1

1.2. Statement of problem …………………………………... 4

1.3. Objectives of Study …………………………………... 5

1.4. Scope of Work ………………………………….. 5

1.5. Relevance of Research Work ………………………………….. 5

CHAPTER TWO

LITERATURE REVIEW ………………………………….. 6

2.1. Introduction to Adsorption theory ……………………………… 8

2.2. Relevance of Adsorption ……………………………… 8

2.3. Methods of adsorption ………………………………. 9

2.4. Factors affecting adsorption include …………………………. 10

2.5. Adsorption Equilibria ………………………………….. 10

2.5.1. Langmuir Adsorption Isotherm ………………………………. 11

2.5.2. Freundlich Adsorption Isotherm …………………………….. 12

2.5.3. BET adsorption isotherm ……………………………………… 12

2.6. Activated Carbon ……………………………………………. 13

2.6.1. History of activated carbon and summary of its uses ………… 14

2.6.2. Properties of Activated Carbon …………………………….. 16

2.6.2.1. Iodine number ……………………………………………… 17

2.6.2.2. Molasses …………………………………………..... 18

2.6.2.3. Tannin ……………………………………………….. 19

2.6.2.4. Methylene blue ……………………………………………… 19

2.6.2.5. Dechlorination …………………………………………….. 20

2.6.2.6. Apparent density …………………………………………. 20

2.6.2.7. Hardness/abrasion number ………………………………… 20

2.6.2.8. Ash content ……………………………………………. 20

2.6.2.9. Carbon tetrachloride activity …………………………….. 21

2.6.2.10.Particle size distribution ……………………………… 21

2.6.3. Preparation of Activated Carbon …………………………… 21

2.6.3.1. Physical Activation ………………………………………. 22

2.6.3.2. Chemical activation ……………………………………… 24

2.6.4. Types of Activated Carbon ………………………………….. 26

2.6.4.1. Powdered activated carbon (PAC) ………………………… 26

2.6.4.2. Granular Activated Carbon (GAC) ………………………… 26

2.6.4.3. Extruded activated carbon (EAC) ………………………… 27

2.6.4.4. Impregnated carbons ……………………… 27

2.6.4.5. Polymer coated carbon ……………………………… 28

2.6.4.6. Pellet Activated Carbon …………………………… 28

2.7. Common Adsorbents ……………………………….. 28

2.8. Copper in the environment ………………………………. 29

2.8.2. Effects of copper ……………………………………………….. 31

2.9. Lead in the Environment ……………………………………… 33

2.9.1. Effects of lead …………………………………………….. 35

2.10. Wastewater; Concept / Principle ………………………………. 37

2.10.1. Sources of Wastewater ……………………………………… 37

2.10.2. Wastewater constituents ……………………………………… 39

2.10.2.1. Physical Characteristics ………………………............. 40

2.10.2.2. Biological Characteristics ……………………...................... 40

2.10.2.3. Chemical Characteristics ………………………………... 41

2.10.3. Wastewater Treatment Methods & Disposal ………………… 41

2.10.3.1. Physical wastewater treatment methods ………………......... 42

2.10.3.2. Chemical wastewater treatment methods ………………….. 44

2.10.3.3. Biological wastewater treatment methods ………………….. 45

2.10.3.4. Preliminary Treatment ………………………………………. 47

2.10.3.5. Primary Treatment ………………………………………. 47

2.10.3.6. Secondary Treatment ……………………………………… 48

2.10.3.7. Sludge Treatment ……………………………………….. 50

2.10.3.8. Tertiary and Advanced Wastewater Treatment ………………… 51

CHAPTER THREE

RESEARCH METHODOLOGY ………………………………..... 53

3.1. Model formulation ……………………………………….. 53

3.2. Data analysis ……………………………………………… 54

3.3. Solution of the equations …………………………………… 54

3.4. Investigation of adsorption parameters …………………….. 54

3.4.1. Effect of temperature ……………………………………… 54

3.4.2. Effect of pH ……………………………………………….. 55

3.4.3. Effect of contact time …………………………………. 55

3.4.4. Effect of adsorbent dosage ……………………………... 55

3.4.5. Adsorption efficiency, η ……………………………....... 56

3.5. Model formation …………………………………... 56

3.6. Data Analysis for Lead …………………………………… 58

3.7. Data analysis for Copper ………………………………….. 63

CHAPTER FOUR

RESULTS AND DISCUSSION ………………………………… 68

4.1. Result Analysis ………………………………………… 68

4.1.1. Effect of pH ………………………………………… 68

4.1.2. Effect of Adsorbent Dosage, ……………………………… 71

4.1.3. Effect of Contact Time, t ………………………………….. 73

4.1.4. Effect of Temperature, θ ………………………………… 75

CHAPTER FIVE

SUMMARY, CONCLUSION AND RECOMMENDATION …. 78

5.1 Summary ………………………………………………………. 78

5.2. Conclusion ……………………………………………. 78

5.3. Recommendation ……………………………………… 79

REFERENCE …………………………………………… 80

MODELLING OF ADSORPTION EFFICIENCY FOR THE REMOVAL OF LEAD AND COPPER FROM WASTE WATER
For more Info, call us on
+234 8130 686 500
or
+234 8093 423 853

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  • Type: Project
  • Department: Civil Engineering
  • Project ID: CVE0140
  • Access Fee: ₦5,000 ($14)
  • Pages: 26 Pages
  • Format: Microsoft Word
  • Views: 515
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    Details

    Type Project
    Department Civil Engineering
    Project ID CVE0140
    Fee ₦5,000 ($14)
    No of Pages 26 Pages
    Format Microsoft Word

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