Biosorptive Potential of Vigna radiata Biomass for Removal of Copper (II) and Cadmium (II) from Aqueous Medium

Bachelor Thesis , 2017 , 120 Pages , Grade: A

Chemistry - Other

This study is based on the investigation of the biosorptive potential of Vigna radiata for removal of copper (II) and cadmium (II) from aqueous medium. Effects of different parameters like amount of dosage, agitation time, pH and temperature of the medium on adsorption process were studied. It was observed that Vigna radiata showed maximum adsorption potential for copper and cadmium at pH 5 and 7, respectively.

Different models like Langmuir, Freundlich, Tempkin and DR were employed to analyze the insight of adsorption process of heavy metals. Maximum adsorption capacity for copper and cadmium were found to be 2.426 mg/g and 6.82 mg/g respectively. Biosorption process of Vigna radiata for removal of heavy metals followed pseudo 2nd order kinetics. Thermodynamic parameters of adsorption process indicated the feasibility and spontaneity of adsorption process. Desorption of Vigna radiata biomass was also done using HCl solution as eluting agent and adsorption potential of recycled adsorbent was also studied.

Inhaltsverzeichnis (Table of Contents)

• CHAPTER 1: INTRODUCTION
  • 1.1 Water pollution
  • 1.2 Heavy metal pollution
  • 1.3 Toxicity of heavy metals in waste water
    • 1.3.1 Nickel
    • 1.3.2 Lead
    • 1.3.3 Chromium
    • 1.3.4 Mercury
    • 1.3.5 Manganese
    • 13.6 Zinc
    • 13.7 Arsenic
  • 1.4 Emission of heavy metals
  • 1.5 Chemistry of heavy metal pollution
  • 1.6 Methods for removal of heavy metals
    • 1.6.1 Biosorption
    • 1.6.2 Chemical Precipitation
    • 1.6.3 Membrane Processing
    • 1.6.4 Adsorption
  • 1.7 Factors affecting rate of adsorption
    • 1.7.1 Amount of Adsorbent
    • 1.7.2 Effect of temperature
    • 1.7.3 Effect of pH
    • 1.7.4 Effect of Time
  • 1.8 Adsorption isotherm models
    • 1.8.1 Langmuir adsorption isotherm
    • 1.8.2 Freundlich isotherm model
    • 1.8.3 Tempkin Isotherm Model
    • 1.8.4 Dubinin-Radushkevich Model
  • 1.9 Kinetic modelling
    • 1.9.1 Pseudo first order model
    • 1.9.2 Pseudo second order model
    • 1.9.3 Elovich model
    • 1.9.4 Intra particle diffusion model
  • 1.10 Thermodynamic parameters of adsorption
  • 1.11 Removal of cadmium from aqueous medium (Adsorbate)
  • 1.12 Removal of copper from aqueous medium (Adsorbate)
  • 1.13 Vigna radiata as an adsorbent
    • 1.13.1 Applications of Vigna radiata
• RATIONALE
• OBJECTIVES
• CHAPTER 2: LITERATURE REVIEW
• CHAPTER 3: EXPERIMENTAL
  • 3.1 Analytical technique
    • 3.1.1 Atomic absorption spectrophotometer
    • 3.1.2 Instrumentation
    • 3.1.3 Working
    • 3.1.4 Types of atomic absorption spectrophotometer
      • 3.1.4.1 Single beam atomic absorption spectrophotometer
      • 3.1.4.2 Double beam atomic absorption spectrophotometer
  • 3.2 Experimental work
    • 3.2.1 Apparatus and chemicals
    • 3.2.2 Apparatus used
    • 3.2.3 Chemicals used
    • 3.2.4 Instrument/ Equipment used
  • 3.3 Methodology
    • 3.3.1 Sample collection
    • 3.3.2 Sample preparation
    • 3.3.3 Preparation of solutions
      • 3.3.3.1 Preparation of stock solution of copper
      • 3.3.3.2 Preparation of stock solution of cadmium
      • 3.3.3.3 Preparation of standard solutions of cadmium
      • 3.3.3.4 Preparation of standard solutions of copper
    • 3.3.4 Factors affecting the adsorption process
      • 3.3.4.1 Amount of dosage
      • 3.3.4.2 pH factor
      • 3.3.4.3 Contact time
      • 3.3.4.4 Temperature
    • 3.3.5 Adsorption isotherm models
    • 3.3.6 Vigna radiata regeneration
• CHAPTER 4: RESULTS
  • 4.1. FTIR analysis of adsorbent
  • 4.2 Factors affecting the adsorption process of copper
    • 4.2.1 Effect of adsorbent dose on adsorption of copper
    • 4.2.2 Time factor
    • 4.2.3 pH factor
    • 4.2.4 Temperature factor
  • 4.3 Adsorption isotherm
    • 4.3.1 Langmuir isotherm model
    • 4.3.2 Freundlich Isotherm
    • 4.3.3 Tempkin isotherm model

• Grade: A
• Author: Aiman Shahbaz (Author)
• Publication Year: 2017
• Pages: 120
• Catalog Number: V911570
• ISBN (eBook): 9783346227133
• ISBN (Book): 9783346227140
• Language: English
• Tags: biosorptive, potential, vigna, biomass, removal, copper, cadmium, aqueous, medium