ABSTRACT
Abstract ..........................................................................................................................................290 9.1 Introduction .......................................................................................................................... 291
9.1.1 Co-Occurrence of Cr(VI) and As(V) ....................................................................... 291 9.1.2 Toxicity of Cr(VI) ..................................................................................................... 291 9.1.3 Toxicity of As(V) ...................................................................................................... 293
9.2 Common Methods of Simultaneous Removal of Cr(VI) and As(V) ....................................294 9.2.1 Electrocoagulation ....................................................................................................294 9.2.2 Zero-Valent Iron and/or Iron-Oxide-Coated Sand ................................................... 295
9.2.2.1 Application of Zero Valent Iron in As and Cr(VI) Removal ..................... 295 9.2.2.2 Application of Iron Oxides in As and Cr(VI) Removal ............................ 295 9.2.2.3 Application of ZVI/IOCS in As and Cr(VI) Removal .............................. 295
9.2.3 Nanoparticles ............................................................................................................296 9.3 The Principle and Performance of Simultaneous Removal of Cr(VI)
and As(V) by Fe(II) ............................................................................................................ 297 9.3.1 Principles of Simultaneous Removal of Cr(VI) and As(V) by Fe(II) ......................297 9.3.2 Performance of Simultaneous Removal of Cr(VI) and As(V) by Fe(II)..................297
