Photocatalytic degradation of Acid Red dye stuff in the presence of activated carbon-TiO2 composite and its kinetic enumeration. (August 2016)

• Record Type: Journal Article
• Authors: Singh, Pardeep; Vishnu, M.C.; Sharma, Karan Kumar; Borthakur, Anwesha; Srivastava, Pratap; Pal, D.B; Tiwary, Dhanesh; Mishra, Pradeep Kumar
• Is Part Of: Journal of water process engineering. Volume 12(2016)
• Page Start: 20
• Page End: 31
• Publication Date: 2016-08
• Subjects: Photo-catalytic reactor -- Activated carbon -- TiO2- composite -- Organic dye -- Reaction kinetics; Water-supply engineering -- Periodicals; Saline water conversion -- Periodicals; Seawater -- Distillation -- Periodicals; Sanitary engineering -- Periodicals; Sewage -- Purification -- Periodicals; 627
• DOI: 10.1016/j.jwpe.2016.04.007
• Languages: English
• ISSNs: 2214-7144

Abstract

Highlights: Preparation and characterization of TiO2 /activated carbon photo-catalyst. Photo-catalytic degradation analysis of Acid Red 131 in a photochemical reactor. Mathematical modeling and kinetics elucidation of the reaction. Effect of spent catalyst on the seed germination of Vigna radiata . Abstract: The present paper deals with photocatalytic degradation of effluents from dye industries which have known toxic impacts on flora and fauna. Nano composite of titanium dioxide having activated carbon (TiO2 /AC) base was synthesized using sol-gel method. The synthesized catalyst was then characterized by Fourier Transform-Infrared (FT-IR) spectroscopy, Scanning Electron Microscopy (SEM), X-ray Diffractometry (XRD) and Brunauer Emmet Teller (BET) surface area analyzer. A synthetic solution of AR-131 dye was subjected to photocatalytic degradation using TiO2 /AC nano composite as catalyst. The degradation mechanisms of dye (AR-131) via photo-catalysis were found to follow a first order kinetics mechanism (vis. Langmuir- Hinshelwood Model). Toxicity of spent catalysts was further investigated in seed germination of Vigna radiata . Enhanced seed germination along with elongation of root and shoot was noticed up to the concentration of 500 ppm confirming its non toxicity.