Preface List of Contributors Part I The Selenium Cycle Chapter 1 Selenium in the environment Martina Cappelletti, Valerio Funari, Giorgio Gasparotto, Enrico Dinelli and Davide Zannoni Chapter 2 Radioactive selenium: origin and environmental dispersion scenarios Teba Gil-Díaz, Frank Heberling and Elisabeth Eiche Chapter 3 Microbial reduction of selenium oxyanions: energy-yielding and detoxification reactions Silvia Lampis and Giovanni Vallini Chapter 4 Microbial ecology of selenium-respiring bacteria Joshua P. Boltz and Bruce E. Rittmann Part II Remediation of Selenium Contamination Chapter 5 Reactivity and selectivity of zerovalent iron toward selenium oxyanions under aerobic conditions Jinxiang Li, Yuankui Sun and Xiaohong Guan Chapter 6 Biological treatment technologies Robert Simm Chapter 7 In situ and ex situ bioremediation of seleniferous soils and sediments Shrutika L. Wadgaonkar, Piet N. L. Lens Part III Selenium biofortification Chapter 8 Selenium hyperaccumulation in plants Leonardo Warzea Lima and Michela Schiavon  Chapter 9 Selenium biofortification for human and animal nutrition Jun Li, Gijs Du Laing, Ivet Ferrer and Piet N. L. Lens   Part IV Selenium nanoparticles and quantum dots   Chapter 10 Se nanoparticle manufacturing for medical applications Alessandro Presentato, Elena Piacenza and Raymond J. Turner   Chapter 11 Biological synthesis of metal selenide nanoparticles and their applications Raj Mohan Balakrishnan and Vrushali Vinayak Kadam   Chapter 12 Biosynthesis of selenium nanomaterials by anaerobic bacteria for environmental technologies Piet N. L. Lens   Index