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Chemometrics optimization for simultaneous adsorptive removal of ternary mixture of Cu(II), Cd(II), and Pb(II) by Fraxinus tree leaves
Author(s) -
Zolgharnein Javad,
Shahmoradi Ali,
Bagtash Maryam,
Frahani Saeideh Dermanaki,
Zolgharnein Peyman
Publication year - 2017
Publication title -
journal of chemometrics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.47
H-Index - 92
eISSN - 1099-128X
pISSN - 0886-9383
DOI - 10.1002/cem.2935
Subject(s) - biosorption , chemistry , sorbent , ternary operation , nuclear chemistry , aqueous solution , chemometrics , metal ions in aqueous solution , chromatography , sorption , analytical chemistry (journal) , metal , adsorption , organic chemistry , computer science , programming language
Fraxinus tree leaves were successfully used to remove ternary mixture of Cu(II), Cd(II), and Pb(II) from an aqueous solution in a batch system. The simplex‐centroid mixture design was used for optimization of the biosorption process. The effective factors on biosorption process, such as pH, s (amount of biosorbent), and C i initial concentrations of metal ions, were considered via a crossed mixture–process design. Optimal conditions were found to be as follows: pH = 5, s (sorbent mass) = 0.05 g, C Cu (initial Cu(II) concentration) = 100.0 mg/L, C Cd (Initial Cd(II) concentration) = 129.1 mg/L, and C Pb (Initial Pb(II) concentration) = 70.9 mg/L. The results clearly show competitive effects between mixture ingredients in favor of Pb(II), and also an interaction between process and mixture variables was observed. It was found that, with increasing Pb(II) contribution, the removal efficiency increases to its highest value. The pH has a positive effect and sorbent mass a negative effect on the response. To characterize the biosorption, Fourier transform infrared analysis was performed and, according to the results, the main functional groups of sorbent were involved in the biosorption process.