Content: Cover
Half Title
Title Page
Copyright Page
Dedication
Table of Contents
Acknowledgements
Summary
Samenvatting
1: General introduction
1.1 Background
1.1.1 Wastewater treatment with algal technologies
1.1.2 Wastewater treatment using microalgal-bacterial systems
1.2 Problem statement
1.3 Outline of thesis
2: Microalgal-bacterial consortia for wastewater treatment: a review
2.1 Microalgal-bacterial consortia
2.1.1 Interactions within microalgal-bacterial consortia
2.1.2 Nutrient removal by microalgal-bacterial consortia
2.1.3 Microalgal-bacterial systems and configurations 2.1.4 Limiting and operational conditions of microalgal-bacterial photobioreactors2.2 Microalgal-bacterial modelling
2.3 Aims of this PhD research
3: Nitrification by microalgal-bacterial consortia for ammonium removal in a flat panel sequencing photobioreactor
3.1 Introduction
3.2 Materials and methods
3.2.1 Reactor set-up
3.2.2 Inoculation
3.2.3 Composition of the synthetic wastewater
3.2.4 Experimental design
3.2.5 Sampling and analytical methods
3.2.6 Nitrogen balance
3.3 Results and discussion
3.3.1 Biomass concentration and production in the FPRs 3.3.2 Solids retention time and the effect on ammonium removal rates3.3.3 Fate of nitrogen in the FPRs
3.3.4 Total and specific ammonium removal rates by algae and nitrifiers in the FPRs
3.3.5 Implications of using microalgal-bacterial consortia for ammonium removal
3.4 Conclusions
4: Ammonium removal mechanisms in a microalgal-bacterial sequencing-batch photobioreactor at different SRT
4.1 Introduction
4.2 Materials and methods
4.2.1 Photobioreactor set-up
4.2.2 Growth medium, microalgal-bacterial consortia and inoculation
4.2.3 Sampling and analytical methods 4.2.4 Biomass productivity, nitrogen and oxygen mass balance equations4.2.5 Total specific and volumetric ammonium removal rate
4.2.6 Oxygen mass balance
4.3 Results and Discussion
4.3.1 Biomass concentration and chlorophyll-a
4.3.2 Nitrogen and ammonium removal efficiencies and rates
4.3.3 Nitrogen removal mechanisms and biomass characterization
4.3.4 Oxygen production in a microalgal-bacterial photobioreactor under different SRTs
4.3.5 Effects of SRT on the light penetration, ammonium removal mechanisms and oxygen production
4.4 Conclusions 5: Modelling of nitrogen removal using a microalgal-bacterial consortium5.1 Introduction
5.2 Materials and Methods
5.2.1 Experimental
5.2.2 Integrated microalgal-bacterial model
5.2.3 Statistical analysis
5.3 Results and Discussion
5.3.1 Experimental
5.3.2 Integrated microalgal-bacterial model
5.4 Conclusions
6: Modelling of nitrogen removal using a microalgal-bacterial consortium under different SRTs
6.1 Introduction
6.2 Materials and Methods
6.2.1 Microalgal-bacterial model
6.2.2 Sensitivity analysis
6.2.3 Reactor and data collected