ABSTRACT

Department of Chemical Engineering, Harcourt Butler Technological Institute, Kanpur, Uttar Pradesh, India

7.1 Introduction .................................................................................... 98 7.1.1 Lead .................................................................................... 99 7.1.2 Cadmium .......................................................................... 100 7.1.3 Chromium ........................................................................ 100 7.2 Materials and Methods ................................................................. 101 7.2.1 Sample Collection and Preparation of Adsorbent ............ 101 7.2.2 Stock Solutions ................................................................. 102 7.3 Result and Discussion .................................................................. 102 7.3.1 Cadmium .......................................................................... 102 7.3.1.1 Effect of Contact Time ...................................... 102 7.3.1.2 Effect of Adsorbent Dose .................................. 103 7.3.1.3 Effect of Initial Concentration ........................... 104 7.3.1.4 Effect of pH ....................................................... 105 7.3.1.5 Effect of Particle Size ........................................ 106 7.3.2 Chromium ........................................................................ 106 7.3.2.1 Effect of Contact Time ...................................... 106

7.3.2.2 Effect of Adsorbent Dose .................................. 107 7.3.2.3 Effect of Initial Concentration ........................... 108 7.3.2.4 Effect of pH ....................................................... 109 7.3.2.5 Effect of Particle Size .........................................110 7.3.3 Lead ...................................................................................111 7.3.3.1 Effect of Contact Time .......................................111 7.3.3.2 Effect of Adsorbent Dose ...................................112 7.3.3.3 Effect of Initial Concentration ............................112 7.3.3.4 Effect of pH ........................................................113 7.3.3.5 Effect of Particle Size .........................................114 7.4 Conclusion ....................................................................................115 Keywords ...............................................................................................116 References ..............................................................................................116

7.1 INTRODUCTION