10.1007/s40097-018-0292-3

Removal of heavy metals (Cu2+ and Cd2+) from effluent using gamma irradiation, titanium dioxide nanoparticles and methanol

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  • Behnam Asgari Lajayer1,
  • Nosratollah Najafi*1,
  • Ebrahim Moghiseh2,
  • Mohammad Mosaferi3,
  • Javad Hadian4,
  1. Department of Soil Science, Faculty of Agriculture, University of Tabriz, Tabriz, 5166616422, IR
  2. Nuclear Agriculture Research School, Nuclear Science and Technology Research Institute, Karaj, IR
  3. Health and Environment Research Center, Tabriz University of Medical Sciences, Tabriz, IR
  4. Medicinal Plants and Drugs Research Institute, Shahid Beheshti University, Tehran, 1483963113, IR
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Published in Issue 27-11-2018

How to Cite

Asgari Lajayer, B., Najafi, N., Moghiseh, E., Mosaferi, M., & Hadian, J. (2018). Removal of heavy metals (Cu2+ and Cd2+) from effluent using gamma irradiation, titanium dioxide nanoparticles and methanol. Journal of Nanostructure in Chemistry, 8(4 (December 2018). https://doi.org/10.1007/s40097-018-0292-3
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Abstract

Abstract Heavy metal pollution has become one of the most serious environmental problems. The aim of this study was to achieve an efficient treatment process of effluents containing 1 mM copper (Cu 2+ ) and cadmium (Cd 2+ ) ions using a combination of gamma irradiation, methanol and TiO 2 nanoparticles under different pH values. The results showed that in acidic conditions, removal of Cu 2+ and Cd 2+ ions by physical adsorption was less than 15% and adsorption of Cd 2+ was more than that of Cu 2+ . In the same condition, the Cu 2+ removal percentage by irradiation was greater than that of Cd 2+ . In basic solutions, due to precipitation of Cd and Cu hydroxides, it was not possible to carry out adsorption experiments on Cd 2+ and Cu 2+ ions removal by TiO 2 and gamma irradiation. Cu 2+ and Cd 2+ ions removal processes under different conditions could be depicted by the first order kinetics model. The combined application of TiO 2 and methanol enhanced Cu 2+ and Cd 2+ ions removal at all pH levels examined. However, using the combination of TiO 2 and methanol at acidic solutions facilitated completely removal of Cu 2+ and Cd 2+ ions. So that, only using 50 kGy irradiation dose with combination of TiO 2 nanoparticles and methanol led to the removal of 99% of coexisting Cu 2+ and Cd 2+ ions from the acidic wastewater.

Keywords

  • Gamma irradiation,
  • Heavy metals,
  • Methanol,
  • Nanoparticles,
  • Radiocatalysis,
  • Wastewater
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