A study of process variables for the photo-catalytic degradation of rhodamine-B using TiO2 and Nb2O5
Year: 2013
Type: article
Abstract: Department of Chemical Engineering, Bharati Vidyapeeth Deemed University, College of Engineering, Pune-411 043, Maharashtra, India E-mail : [email protected] Department of Chemical Engineering, College of Engineering & Technology, Akola-444 I 04, Maharashtra, India Manuscript received online 24 November 2012, revised 28 December 2012, accepted 08 January 2013 This study involves the photo-catalytic degradation of rhodamine-B (RB) employing heterogeneous photo-catalytic process. Photo-catalytic activity of different semiconductors such as titanium dioxide (TiO2) and niobium pentaoxide (Nb2O5) has been investigated. An attempt has been made to study the effect of process parameters through amount of catalyst, initial concentration of dye, and operating pH on photo-catalytic degradation of RB. The experiments were carried out by varying pH (2-11), amount of catalyst (0.25-1.5 g/L), and initial concentration of dye (10-50 mg/L). The optimum catalyst dose was found to be 1 g/L of TiO2 and 1.25 g/L of Nb2O5 for RB at 30 mg/L respectively. The maximum rate of degradation was observed in acidic medium at pH 3 for catalyst TiO2 and Nb2O5 respectively. It was observe that the photocatalytic activity of TiO2 is greater than Nb2O5.
Language: English
Field: Energy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W4297908098