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Optimization of process parameters for rapid adsorption of Pb(II), Ni(II), and Cu(II) by magnetic/talc nanocomposite using wavelet neural network

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Abstract

Artificial neural networks have been widely used to solve problems because of their reliable, robust, and salient characteristics in capturing nonlinear relationships between variables in complex systems. In this study, a wavelet neural network (WNN) based on the incremental backpropagation (IBP) algorithm was used in conjunction with an experimental design. To optimize the network, independent variables including ion concentration, adsorbent dose, and removal time were used as input parameters, while the removal percentage of Pb(II), Ni(II), and Cu(II) by magnetic/talc nanocomposite were selected as outputs. The network was trained by the IBP and four other algorithms as a model. To determine the number of hidden-layer nodes in the model, the root-mean-square error of a testing set was minimized. After minimizing this error, the topologies of the algorithms were compared based on the coefficient of determination and absolute average deviation. This comparison indicated that the IBP algorithm had the minimum root-mean-square error and absolute average deviation, and maximum coefficient of determination, for the test dataset. The importance values included 35.16 % for initial ion concentration, 32.74 % for adsorbent dose, and 32.11 % for removal time, showing that none of these were negligible. These results show that the WNN has great potential ability for prediction of removal of heavy-metal ions from aqueous solution with residual standard error less than 1.2 %.

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Authors and Affiliations

  1. Department of Chemical and Environmental Engineering, Faculty of Engineering, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia

    Negisa Darajeh

  2. Department of Chemistry, Faculty of Science, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia

    Hamid Reza Fard Masoumi, Katayoon Kalantari, Mansor B. Ahmad, Mahiran Basri & Roshanak Khandanlou

  3. Japan International Institute of Technology (MJIIT), Universiti Teknologi Malaysia, 54100, Kuala Lumpur, Malaysia

    Kamyar Shameli

Authors
  1. Negisa Darajeh
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  2. Hamid Reza Fard Masoumi
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  3. Katayoon Kalantari
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  4. Mansor B. Ahmad
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  5. Kamyar Shameli
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  6. Mahiran Basri
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  7. Roshanak Khandanlou
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Correspondence to Katayoon Kalantari or Mansor B. Ahmad.

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Darajeh, N., Fard Masoumi, H.R., Kalantari, K. et al. Optimization of process parameters for rapid adsorption of Pb(II), Ni(II), and Cu(II) by magnetic/talc nanocomposite using wavelet neural network. Res Chem Intermed 42, 1977–1987 (2016). https://doi.org/10.1007/s11164-015-2129-8

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  • DOI: https://doi.org/10.1007/s11164-015-2129-8

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