Thạc Sĩ Evaluation of the spatial removal of nitrogen in the marshland

Table of Contents
Acknowledgements ii
List of Tables .v
List of Figures .vii
Abstract ix
Chapter 1: Global Introduction 1
1.1 Introduction 1
1.2 MUS Background .4
1.3 Bayou Segnette Background 7
1.3.1 Bayou Segnette System Description 8
1.4 Treatment Wetlands 10
1.4.1 Nitrogen Forms in Treatment Wetlands .11
1.5 Nitrogen Fate and Transport .12
1.5.1 Nitrogen Transport .12
1.5.2 Nitrogen Fate 13
1.6 Research Objectives .14
Chapter 2: Estimation of the First-Order Reduction of Nitrogen in the Marshland Upwelling
System Under Low Salinity Background Conditions . 16
2.1 Introduction 16
2.2 Materials and Methodology 19
2.2.1 Site and System Description 19
2.2.2 Soil Characterization 22
2.2.3 Sample Collection and Analysis 23
2.2.4 Data Analysis .27
2.3 Results and Discussion .28
2.3.1 System Loadings 34
2.3.2 First-Order Nitrogen Reduction .38
2.4 Conclusions 46
Chapter 3: Spatial Evaluation of Nitrogen Reduction in the Marshland Upwelling System.48
3.1 Introduction 48
3.2 Materials and Methodology 50
3.2.1 System Description and Operation .50
3.2.2 Sample Collection and Analysis 55
3.2.3 Data Analysis .56
3.3 Results and Discussion .60
3.3.1 Exploratory Analysis and General Linear Regression .60
3.3.2 Structural Data Analysis and Kriging Estimation 65
3.4 Conclusions 71
Chapter 4: The Influence of Salinity on the Ammonium Adsorptive Capacities of Wetland
Soils .73
4.1 Introduction 73
4.2 Materials and Methodology 76
iv
4.2.1 Soil Characteristics .76
4.2.2 Batch Adsorption Study .78
4.2.3 Sorption Isotherms .80
4.3 Results and Discussion .82
4.3.1 Ammonium Batch Adsorption Study .82
4.3.2 Ammonium Sorption Isotherms .87
4.3.3 Design Implications .94
4.4 Conclusions 96
Chapter 5: Global Discussion and Conclusion 98
Chapter 6: Design Implications and Research Recommendations 101
References .103
Vita 107