Home / Biochemistry / Life cycle assessment of the environmental impact of biosurfactant production from oil waste by a diculture of azotobacter vinelandii and pseudomonas sp.

Life cycle assessment of the environmental impact of biosurfactant production from oil waste by a diculture of azotobacter vinelandii and pseudomonas sp.

 

Table Of Contents


Chapter ONE

1.1 Introduction
1.2 Background of Study
1.3 Problem Statement
1.4 Objective of Study
1.5 Limitation of Study
1.6 Scope of Study
1.7 Significance of Study
1.8 Structure of the Research
1.9 Definition of Terms

Chapter TWO

2.1 Overview of Biosurfactants
2.2 Types of Biosurfactants
2.3 Environmental Impact of Biosurfactant Production
2.4 Oil Waste as a Raw Material for Biosurfactant Production
2.5 Azotobacter Vinelandii and Pseudomonas sp. as Biosurfactant Producers
2.6 Production Processes of Biosurfactants
2.7 Applications of Biosurfactants
2.8 Market Trends of Biosurfactants
2.9 Regulation and Sustainability of Biosurfactant Production
2.10 Future Prospects in Biosurfactant Research

Chapter THREE

3.1 Research Methodology Overview
3.2 Selection of Azotobacter Vinelandii and Pseudomonas sp. as Cultures
3.3 Collection and Preparation of Oil Waste
3.4 Biosurfactant Production Process
3.5 Experimental Design and Parameters
3.6 Data Collection and Analysis Methods
3.7 Quality Control Measures
3.8 Ethical Considerations in Research

Chapter FOUR

4.1 Analysis of Biosurfactant Production Efficiency
4.2 Comparison of Biosurfactant Yields
4.3 Characterization of Biosurfactants Produced
4.4 Environmental Impact Assessment
4.5 Cost Analysis of Biosurfactant Production
4.6 Market Potential and Economic Feasibility
4.7 Discussion on Regulatory Compliance
4.8 Implications and Recommendations for Future Research

Chapter FIVE

5.1 Summary of Findings
5.2 Conclusion
5.3 Contributions to Knowledge
5.4 Implications for Industry and Environment
5.5 Recommendations for Further Research

Thesis Abstract

During the bioprocess of the biosurfactant production (by the consortium), the volume of CO2 evolved was 28.23 ± 5.08 cm3, which is equivalent to 0.056 ± 0.01g CO2 per 100 ml of broth. In terms of gCO2/1000Kg biosurfactant, this gave a value of 4545 ± 817.93g CO2 in this bioprocess. Following from above, the life cycle impact assessment (LCIA) of biosurfactant production by this consortium, based on global warming potential (GWP) was 0.046 tonnes/1000Kg biosurfactant. Other impact values calculated for acidification and eutrophication potentials were 0.008 tonnes / 1000 Kg and 0.0014 tonnes/1000Kg of biosurfactant. These values were considered insufficient in terms of environmental pollution when compared with the regular methods of surfactants production. In this work also, the consortium of Pseudomonas sp/Azotobacter vinelandii produced 1.22 ± 0.04 mg biosurfactant per 100ml of cell – free broth. However, the individual organisms (Pseudomonas sp. and Azotobacter vinelandii) produced 1.03 ± 0.02 and 0.08 ± 0.001 mg of biosurfactants per 100 ml cell – free broth respectively. The microbial growth kinetics during the production of the biosurfactant by the consortium gave a specific maximum growth (µmax) of 1.306 ± 0.201 hr-1), a saturation constant (Ks) of 0.017 ± 0.007 mg/l, an Inhibition constant (Ki) of 121.83 ± 21.18 mg/land a Death constant (Kd) of 0.017 ± 0.006 mg/l. These values when compared with those of individual organisms shows that using a consortium for the bioprocess is more sustainable.

Thesis Overview

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