目次

Chapter 1 - General Introduction1.1 Background1.2 Problem description 1.3 Research objectives 1.4 Structure of the thesis 1.5 References Chapter 2 - Selenium: Environmental significance, pollution, and biological treatment technologies Abstract 2.1 Introduction 2.2 Why is selenium important? 2.3 Selenium-laden wastewaters 2.4 Biotreatment technologies 2.5 Challenges in selenium biotechnologies 2.6 Future perspective in selenium biotechnologies 2.7 Conclusions 2.8 References Chapter 3 - Effect of elevated nitrate and sulfate concentrations on selenate removal by mesophilic anaerobic granular bed reactors Abstract 3.1 Introduction 3.2 Materials and methods 3.3 Results 3.4 Discussion3.5 Conclusions 3.6 References Chapter 4 - Selenate removal in biofilm systems: effect of nitrate and sulfate on selenium removal efficiency, biofilm structure, and microbial communityAbstract 4.1 Introduction 4.2 Materials and methods 4.3 Results 4.4 Discussion4.5 Conclusions 4.6 References Chapter 5 - Biological treatment of selenium-laden wastewater containing nitrate and sulfate in an upflow anaerobic sludge bed reactor at pH 5.0 Abstract 5.1 Introduction 5.2 Materials and methods 5.3 Results 5.4 Discussion5.5 Conclusions 5.6 References Chapter 6 - Comparative performance of anaerobic attached biofilm and granular sludge reactors for the treatment of model mine drainage wastewater containing selenate, sulfate and nickel Abstract 6.1 Introduction 6.2 Materials and methods 6.3 Results 6.4 Discussion6.5 Conclusions 6.6 References Chapter 7 - Amberlite® IRA-900 ion exchange resin for the sorption of selenate and sulfate: Equilibrium, kinetic and regeneration studies Abstract 7.1 Introduction 7.2 Material and methods 7.3 Results 7.4 Discussion7.5 Conclusions 7.6 References Chapter 8 - Simultaneous removal of sulfate and selenate from wastewater by process integration of an ion exchange column and upflow anaerobic sludge blanket bioreactor Abstract 8.1 Introduction 8.2 Materials and methods 8.3 Results 8.4 Discussions 8.5 Conclusions 8.6 References Chapter 9 - General discussion and future perspective 9.1 General discussion 9.2 Future perspectives 9.3 Conclusions 9.4 References AppendicesAppendix 1 Supporting information for Chapter 3 Appendix 2 Supporting information for Chapter 4 Appendix 3 Supporting information for Chapter 5 Appendix 4 Supporting information for Chapter 6 Appendix 5 Supporting information for Chapter 7 Appendix 6 Supporting information for Chapter 8 Appendix 7 Microbial community analysis