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DOI: https://doi.org/10.4491/eer.2019.138
Application of feed-forward and recurrent neural network in modelling the adsorption of boron by amidoxime-modified poly(Acrylonitrile-Co-Acrylic Acid)
Lau Kia Li1, Siti Nurul Ain Md Jamil2, Luqman Chuah Abdullah1,3, Nik Nor Liyana Nik Ibrahim1, Abel Adekanmi Adeyi1, and Mohsen Nourouzi4
1Department of Chemical and Environmental Engineering, Faculty of Engineering, Universiti Putra Malaysia, UPM Serdang 43400, Malaysia
2Department of Chemistry, Faculty of Science, Universiti Putra Malaysia, UPM Serdang 43400, Malaysia
3Centre of Foundation Studies for Agricultural Science, Universiti Putra Malaysia, UPM Serdang 43400, Malaysia.
4Institute of Tropical Forestry and Forest Product, Universiti Putra Malaysia, UPM Serdang 43400, Malaysia
5Department of Chemical and Petroleum Engineering, College of Engineering, Afe Babalola University Ado-Ekiti, ABUAD, KM. 8.5, Afe Babalola Way, Ado-Ekiti, Ekiti, Nigeria
6Department of Environment, Islamic Azad University of Esfahan, Isfahan 81595-158, Iran
Corresponding Author: Siti Nurul Ain Md Jamil ,Tel: +603 8946 6998, Email: ctnurulain@upm.edu.my
Received: April 5, 2019;  Accepted: October 20, 2019.
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This research reports application of artificial neural network (ANN) in investigation and optimisation of boron adsorption capacity in aqueous solution using amidoxime-modified poly(acrylonitrile-co-acrylic acid) (AO-modified poly(AN-co-AA)). Both feed-forward and recurrent ANN have been utilized to predict the adsorption potential of synthesised polymer. Three operational parameters, which are adsorbent dosage, initial pH and initial boron concentration during adsorption process, were designed to study their effects on the removal capacity. The ANN was trained from experimental data and serviced to optimize, develop and create various prediction models in the process of boron adsorption by AO-modified poly(AN-co-AA). Among several models, radial basis function (RBF) with orthogonal least square (OLS) algorithm displayed good prediction on boron adsorption capacity with mean square error (MSE) and coefficient of determination (R2) at 0.000209 and 0.9985, respectively. With desirable the MSE and R2 values, ANN worked as a promising prediction tool that was able to generate good estimate. The simulated maximum adsorption capacity of the synthesized polymer is 15.23 ± 1.05 mg boron/g adsorbent. Besides, from the results of ANN, the AO-modified poly(AN-co-AA) was proven to be a potential adsorbent for the removal of boron in wastewater treatment.
Keywords: Copolymerisation | Metal removal | Optimization
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