Shrikrishna H Gurlhosur, Sridhar Mathad, V M Patil
Dr Shrikrishna H Gurlhosur1*, Dr Sridhar Mathad2, Dr V M Patil3
1Department of Engineering Science, Rural Engineering College, Hulkoti.
2Department of Engineering Science, KLEIT, Hubli.
3Department of Engineering Science, Rural Engineering College, Hulkoti.
Volume - 13,
Issue - 5,
Year - 2020
The present study examines the photo catalytic reduction of Chromium (VI) and Cadmium (II) from aqueous solution by recycling used hematite (a-Fe2O3) nanoparticles. a-Fe2O3 nanoparticles which were successfully synthesized by sol gel method. Predetermined IONP had crystalline size of 11.5 nm and flower shape. The photocatalytic reduction studies were earlier carried out for Chromium (VI) and Cadmium (II) solution using Ironoxide nanoparticles (IONP) in aqueous solution. Different parameters like metal concentration, dosage of nanoparticles, contact time and pH were studied. Best five results obtained in the experiments carried out while optimizing variable parameters using Response surface methodology were taken for regeneration study. Combination of 2ppm,4pH,150mg gave 92.27% Reduction :10ppm,4pH,150mg gave 81.25% Reduction: 2ppm,4pH,50mg gave 61.96% reduction:6ppm,4pH,100mg gave 59.42% reduction:6ppm,7pH,150mg gave 59.25% reduction These values were obtained for reduction of Chromium (VI) and were taken for regeneration study. Similarly for Cadmium (II) reduction, following best five results was taken for regeneration studies. 2ppm,4pH,150mg gave 94.43% reduction: 2ppm,10pH,150mg gave 75.52% reduction:2ppm,7pH,100mg gave 67.92% reduction:6ppm,7pH,150mg gave 65.02% reduction: 10ppm,7pH,100mg gave 58.65% reduction were taken for regeneration study. The regeneration and reusable experiments were performed and it was observed that the prepared a-Fe2O3 was stable and regenerable using strong acid (HCl) as desorbing agent.
Cite this article:
Shrikrishna H Gurlhosur, Sridhar Mathad, V M Patil. Regeneration of used Ironoxide nanoparticles (α-Fe2O3) in reduction of Chromium (VI) and Cadmium (II). Asian J. Research Chem. 2020; 13(5):319-322. doi: 10.5958/0974-4150.2020.00061.9
1. Hu, Jin‐Song, et al. "Synthesis of hierarchically structured metal oxides and their application in heavy metal ion removal." Advanced Materials 20.15 (2008): 2977-2982.
2. Kakavandi, Babak, et al. "Enhanced chromium (VI) removal using activated carbon modified by zero valent iron and silver bimetallic nanoparticles." Journal of Environmental Health Science and Engineering 12.1 (2014): 115.
3. Park, Hyunwoong, et al. "Surface modification of TiO2 photocatalyst for environmental applications." Journal of Photochemistry and Photobiology C: Photochemistry Reviews 15 (2013): 1-20.
4. Tayeb, Aghareed M., and Dina S. Hussein. "Synthesis of TiO2 nanoparticles and their photocatalytic activity for methylene blue." American Journal of Nanomaterials 3.2 (2015): 57-63.
5. Khan, S. H., B. Pathak, and M. H. Fulekar. "Spherical Surfaced Magnetic (Fe3O4) Nanoparticles as Nano Adsorbent Material for Treatment of Industrial Dye Effluents." International Journal of Nanoscience and Nanotechnology13.2 (2017): 169-175.
6. Hussein, F. M., S. S. Al-Saleh, and S. M. Aliwi. "Photoreduction of Cd+ 2 in aqueous TiO2 suspention." Iraqi National Journal of Chemistry 24 (2006): 587-595
7. Athapaththu, Samindika. "A Comprehensive Study of Cd (II) Removal from Aqueous Solution via Adsorption and Solar Photocatalysis." (2013)
8. Dave, Pragnesh N., and Lakhan V. Chopda. "Application of iron oxide nanomaterials for the removal of heavy metals." Journal of Nanotechnology 2014 (2014).
9. Esfahani, A. Ramazanpour, et al. "Pb (II) removal from aqueous solution by polyacrylic acid stabilized zero-valent iron nanoparticles: process optimization using response surface methodology." Research on Chemical Intermediates40.1 (2014): 431-445.
10. Sharafi, Kiomars, et al. "Apllication of response surface methodlogy (RSM) for statistical analaysis, modeling and optimization of removal of phenol from aqueous solutions by aluminum- modified scoria powder." Int Res J Appl Basic Sci9.10 (2015): 1789-98.
11. Gowda, M. S., P. Shiva K. Kumar, and R. M. Kulkarni. "Photo catalytic deprivation to methylene blue via ZnO nano particles by advanced oxidation process." Int. Res. J.