Volume No. 11 Issue No.: 2 Page No.: 250-262 October-December 2016
SYNTHESIS OF A SPINEL CATALYST BY MECHANOCHEMICAL REACTION FOR THE DEGRADATION OF RB21 DYE
Pardiwala J. M.*, Patel F. J. and Patel S. S.
Institute of Technology, Chemical Engineering Department, Nirma University, Ahmedabad, Gujarat (INDIA)
Received on : September 15, 2016
In this paper the spinel catalyst NiFe2O4/TiO2 and NiFe2O4/ZnO prepared using high energy planetary ball-mill subjected to dye waste water treatment is reported. Catalysts were characterized by XRD, SEM, EDS, FTIR, LCMS/MS and Band-gap techniques etc. Activity of spinel catalyst were carried out under UV-light photocatalytic reactor using RB21 dye. The samples were collected and analysed by COD degradation and UV-visible spectrophotometer for color removal. The products formed after 240 min of dye degradation were identified. Spinel ferrites are having magnetic property which can be easily separated from the suspension with the help of external magnetic source and can be reused for the next cycles. Kinetic study shows the first order reaction kinetics in terms of COD degradation.
Keywords : Planetary ball milling, Nickel ferrite, Reactive turquoise blue dye, Photocatalytic treatment, Kinetic analysis