화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.20, No.4, 2421-2427, July, 2014
DOI10.1016/j.jiec.2013.10.022  Export Citation
Application of high order derivative spectrophotometry to resolve the spectra overlap between BG and MB for the simultaneous determination of them: Ruthenium nanoparticle loaded activated carbon as adsorbent
S. Hajati†, M. Ghaedi1, †, B. Barazesh1, F. Karimi1, R. Sahraei2, A. Daneshfar2, and A. Asghari3
  • Department of Physics, Yasouj University, Yasouj 75918-74831, Iran
  • 1Chemistry Department, Yasouj University, Yasouj 75918-74831, Iran
  • 2Chemistry Department, Ilam University, Ilam, Iran
  • 3Department of Chemistry, University of Semnan, Semnan 35195-363, Iran
E-mail:,
Because of technological importance of simultaneous analysis and removal of dyes in their mixtures, we studied the competitive adsorption of brilliant green (BG) and methylene blue (MB) dyes onto Ruthenium nanoparticles on activated carbon (Ru/C). Due to overlap between the spectra of the dyes, it was needed to apply a suitable method to resolve this overlap. Recently, first derivative method was successfully used to study binary solutions. However, it was failed to apply for the binary solution of BG and MB. Therefore, we successfully applied high order derivative spectrophotometry for resolving the spectra overlap between BG and MB and for the simultaneous determination of them in their mixture. The presence of multi-solute pollutants in most industrial wastewater necessitates investigating the effect of multi-solute systems on adsorption capacity. The optimal pH at which the adsorption capacity is maximum, was found to be close to the pH of natural aqueous solutions that is an advantage. A low dosage (0.015 g) of the prepared carbon-supported Ru nanoparticles (Ru/C) with high surface area (1266 m2/g according BET) was efficiently used for the dyes removal at pH 6.0 (close to the pH of natural aqueous solutions) and at room temperature that is an advantage of Ru/C. Isotherm constants were obtained for BG and MB after modeling experimental data by using different isotherms. A better consistency to Freundlich isotherm model was found. Thermodynamic parameters showed an endothermic and a spontaneous nature for the adsorption of the dyes.
Keywords:Ruthenium nanoparticle;Activated carbon;Methylene blue (MB);Brilliant green (BG);Binary mixture;Derivative spectrophotometry
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