Hamid Kazemi Hakki
Lecturer and Doctorate student, Faculty of Chemical Engineering, Sahand University of Technology, Iran
Title: Investigation of advantages and challenges in photocatalytic wastewater treatment in order to improvement and increasing process efficiency
Biography
Biography: Hamid Kazemi Hakki
Abstract
Nowadays, due to the stability and complex structure of pollutants which discharged from various industrials have caused environmental problems and various diseases which is required more effective and Affordable methods for decomposition of pollutants. Photocatalytic oxidation method is one of the effective, affordable and environmentally friendly methods for water and wastewater treatment. Challenges in photocatalytic treatment are divided in two categories. The first category is Challenges existing in the field of photocatalyst structure and chemical reaction engineering which include electron-hole recombination, possibility of using sunlight as light source, instability of photocatalysts in operation condition, morphological effects of photocatalyst surface, etc. The second category is challenges are related to photoreactor design and controlling of transformation phenomena such as photoreactor design, light intensity and distribution in photoreactor, improvement of mass transfer and heat transfer, distribution of residence time, etc. In order to overcome the mentioned challenges and obstacles, various strategies have been used such as doping the metal or non-metal elements in photocatalyst structure, heterostructure synthesis, new photoreactor design, etc.