Hydrocarbon degradation and accumulation by sansevierialiberica gerome and labroy polluted with crude oil | Blazingprojects Postgraduate Thesis
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Hydrocarbon degradation and accumulation by sansevierialiberica gerome and labroy polluted with crude oil

 

Table Of Contents


Chapter ONE

INTRODUCTION

  • 1.1Introduction
  • 1.2Background of study
  • 1.3Problem Statement
  • 1.4Objective of the study
  • 1.5Limitation of the study
  • 1.6Scope of the study
  • 1.7Significance of the study
  • 1.8Structure of the research
  • 1.9Definition of terms

Chapter TWO

LITERATURE REVIEW

  • 2.1Overview of hydrocarbon degradation
  • 2.2Types of hydrocarbons
  • 2.3Mechanisms of hydrocarbon degradation
  • 2.4Factors influencing hydrocarbon degradation
  • 2.5Sansevieria liberica and its characteristics
  • 2.6Effects of crude oil pollution on plants
  • 2.7Phytoremediation of crude oil pollution
  • 2.8Previous research on hydrocarbon accumulation
  • 2.9Role of microbes in hydrocarbon degradation
  • 2.10Importance of studying hydrocarbon degradation

Chapter THREE

RESEARCH METHODOLOGY

  • 3.1Research methodology introduction
  • 3.2Research design and approach
  • 3.3Sampling techniques
  • 3.4Data collection methods
  • 3.5Data analysis procedures
  • 3.6Experimental setup
  • 3.7Variables and control measures
  • 3.8Ethical considerations in the research

Chapter FOUR

DATA PRESENTATION AND ANALYSIS

  • 4.1Analysis of research findings
  • 4.2Hydrocarbon degradation in Sansevieria liberica
  • 4.3Accumulation of hydrocarbons in polluted plants
  • 4.4Comparison with control plants
  • 4.5Effects of different hydrocarbon types
  • 4.6Microbial community analysis
  • 4.7Plant response to crude oil pollution
  • 4.8Discussion on the implications of findings

Chapter FIVE

SUMMARY, CONCLUSION AND RECOMMENDATIONS

  • 5.1Conclusion and summary of research
  • 5.2Summary of key findings
  • 5.3Interpretation of results
  • 5.4Theoretical implications
  • 5.5Practical implications
  • 5.6Recommendations for future research
  • 5.7Contribution to the field
  • 5.8Conclusion statement

Thesis Abstract

The capability of Sansevierialiberica to withstand crude oil pollution, degrade and/or accumulate the contaminant was investigated using 0.3, 1.3 and 6.3% v/w concentrations of crude oil to pollute soil vegetated with the stem cuttings of the plant. These treatments were repeated in unvegetated soils and the control had no crude oil pollution. The experiment was carried out in 3 replicates in a completely randomized design. Total Petroleum Hydrocarbons (TPH) were determined for all soil samples (vegetated and unvegetated)as well as the leaves, stem and roots using Gas Liquid Chromatography (GLC). Vegetative parameters namely; number of leaves, leaf area, plant height and stem circumference were determined for both control and polluted plants before and after pollution. The results showed that percentage TPH degraded in the vegetated soil was 95.8, 88.5 and 68.1% for 0.3, 1.3 and 6.3% v/w concentrations, respectively. S liberica alone degraded 0.87, 2.92 and 2.29% for the same treatments. Percentage accumulations rof 0.3% v/w crude oil pollution for the leaf, stem and root were 0.002, 0.036 and 0.209%, respectively, those of 1.3% v/w were 0.004, 0.067 and 0.315%, respectively while those of 6.3% v/w were 0.008, 0.085 and 0.43%, respectively. Means for the vegetative parameters for the plant parts showed that there were significant (P< 0.05) differences in some vegetative parameters after contamination with crude oil. Therefore there was phytoremediation and accumulation of hydrocarbons by S. liberica.

Thesis Overview

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