Welcome

Due to industrialization, both surface and ground-water has been heavily contaminated. Nano particles have their unique physical and chemical properties and are found to be powerful in water treatment. In this talk, the approaches for fabrication of nano particles will be first presented. Several materials such as adsorbents and membranes can be further used in association of the nano particles in order that the separation of nano particles after use can become easier. A series of research works will be presented to illustrate the application of the technology in water treatment. In particular, the treatment of toxic substances such as arsenic and fluoride will be discussed in details. It has been demonstrated that the materials outperform the commercially available adsorbents, ion exchange resin and membranes. pH plays an important role in the treatment. The presence of competing substances such as heavy metal, anions and organic matters seems to have less effect on the treatment. Several mathematical models have been developed to illustrate the removal mechanisms. Finally, such important issues as toxicity study of nano particles and industrial-scale application of the technology will be presented.