Prof. Hossein Ganjidoust
Environmental Engineering Division, Civil and Environmental Engineering Faculty, Tarbiat Modares University, Tehran, Iran
Title: REMOVAL OF ACID BLUE 25 USING SILICA-DOPED GRAPHENE OXIDE (GO-SIO2)
Abstract:
Acid Blue 25 (AB25) is an anthraquinone dye widely used in the cosmetics, fabric, and aluminium finishing industries. Due to its high toxicity, mutagenicity and the presence of complex carcinogenic aromatic structures, the removal of AB25 is an environmental imperative. Graphene oxide (GO) is a promising catalyst due to its unique structural properties; however, it is reportedly incapable of effectively activating persulfate.
This study investigates the impact of silica doping on enhancing GO’s catalytic performance for persulfate activation in the decolorization of Acid Blue 25 (AB25). The results indicate that an equal weight proportion of GO to silica was selected as the most efficient ratio. Additionally, pH had no significant effect on removal efficiency, while temperature had the greatest impact. Within 150 minutes with 0.075 gr/L of GO-SiO2 as the catalyst and 1 gr/L of Na2S2O8 as the oxidant, the investigated process removed Acid Blue 25 up to 82%, which was 9% higher than when GO alone was used as the catalyst. For COD removal, silica doping significantly improved performance, achieving 37% removal, which is 17% higher than using GO alone.
Biography:
Hossein Ganjidoust received his BS in Chemical Engineering from Kansas State University, Manhattan, Kansas in 1976, 1st MS in Industrial Management from Central Missouri State University, Warrensburg, Missouri in 1977 and 2nd MS in Sanitary Engineering from the University of Missouri-Columbia in 1978 and PhD in Environmental Engineering from the University of Missouri-Rolla in 1988. From March 1995 to April 1996.
He was on a Year of Sabbatical Leave at The National Institute for Resources & Environment (NIRE), Tsukuba Science City, Tsukuba, and Ibaraki, Japan. For three years since March 2013.He has over 30 years’ experience in teaching and research in graduate levels and is presently engaged as Full Professor in the Department of Environmental Engineering, Civil & Environmental Engineering Faculty, at Tarbiat Modares University in Tehran, I.R. Iran. Dr. Ganjidoust’s research interests include water & wastewater, industrial and hazardous waste handling, treatment, and disposal. In addition, he has given many lectures related to Culture, Archeology & humanity Sciences. He has supervised more than 30 research projects, and many PhD and MS students’ theses. At present time, he is supervisor of 6 PhD theses and 8 MS theses. He has published over 150 papers in scientific and ISI Journals and over 200 conference proceedings on his research. He was engaged in the books entitled: Principles of construction debris Landfill Site Selection (Case study: Tehran), Department of Housing and Urban Development, Building and Housing Research Center, Feb. 2013 (in Persian), "Application of Moving Bed Biofilm Reactor (MBBR) in Sanitary & Industrial Wastewater Treatment", Tarbiat Modares Univ. Published in February 2011 and a chapter on: “Hazardous Waste Management in Islamic Republic of Iran, HWM Policies and Practices in Asian Countries” published by Asian Productivity Organization (APO), Tokyo in October 2001.