ABSTRACT

Water constitutes over 70% of the earth’s surface and it is undeniably the most valuable natural resource that exists on our planet. Without this invaluable compound, which is composed of hydrogen and oxygen, life on earth would be nonexistent. Although we as humans recognize this fact, we sometimes disregard it by polluting our water resources. Consequently, we are slowly but surely harming our planet to the point where organisms are dying at an alarming rate. In addition, our drinking water has been greatly affected and, in many instances, has lost its original purpose. In order to combat water

CONTENTS

6.1 Introduction ................................................................................................ 137 6.2 Biosorption .................................................................................................. 139

6.2.1 Biosorption Mechanism ................................................................ 141 6.2.2 Biosorption Process ....................................................................... 142

6.2.2.1 Batch Biosorption ............................................................ 143 6.2.2.2 Column Biosorption ....................................................... 146

6.2.3 Desorption and Regeneration ...................................................... 148 6.2.4 Scope and Future Directions of Biosorption .............................. 149

6.3 Bioaccumulation ......................................................................................... 150 6.3.1 Scope and Future Directions of Bioaccumulation .................... 152

6.4 Phytoremediation ...................................................................................... 152 6.4.1 Rhizo‹ltration ................................................................................ 153 6.4.2 Phytoextraction .............................................................................. 154 6.4.3 Phytostabilization .......................................................................... 155 6.4.4 Phytovolatilization ......................................................................... 155 6.4.5 Scope and Future Directions of Phytoremediation .................. 156

6.5 Conclusions ................................................................................................. 156 References ............................................................................................................. 157

pollution, we must understand the problems associated with it and become part of the solution.