Prediction of Arsenic Removal from Contaminated Water Using Artificial Neural Network Model

• Published in: Applied sciences 2022-02, Vol.12 (3), p.999
• Main Authors: Al-Yaari, Mohammed, Aldhyani, Theyazn H. H., Rushd, Sayeed
• Format: Article
• Language: English
• Subjects: adaptive network-based fuzzy inference system (ANFIS); Adsorbents; Adsorption; Aqueous solutions; Arsenates; Arsenic; Arsenic removal; Artificial intelligence; artificial neural network (ANN); Correlation coefficient; Correlation coefficients; Datasets; Fuzzy logic; Fuzzy sets; Heavy metals; Inoculum; Machine learning; Membrane separation; Neural networks; Optimization; Pollutant removal; Process parameters; Root-mean-square errors; Water pollution
• ISSN: 2076-3417; 2076-3417
• DOI: 10.3390/app12030999

Arsenic is a deleterious heavy metal that is usually removed from polluted water based on adsorption processes. The latest mode of modeling such a process is to implement artificial intelligence (AI). In the current work, a new artificial neural network (ANN) model was developed to predict the adsorption efficiency of arsenate (As(III)) from contaminated water by analyzing different architectures of an adaptive network-based fuzzy inference system (ANFIS). The database for the current study consisted of the experimental data of the adsorption of As(III) by different adsorbents/biosorbents. The data were randomly divided into two sets: 70% for the training phase and 30% for the testing phase. Four statistical evaluation metrics, namely, mean square error (MSE), root-mean-square error (RMSE), Pearson’s correlation coefficient (R%), and the determination coefficient (R2) were used for the analysis. The best performing ANFIS model was characterized with the average values of 97.72%, 0.9333, 0.137, and 0.274 of R%, R2, MSE, and RMSE, respectively. In addition, a parametric investigation revealed that the most dominating parameters on the adsorption process efficiency were in the following order: pH, As initial concentration, contact time, adsorbent dosage, inoculum size, and temperature. The results of the current study would be useful in the adsorption process scale-up and optimization.