Ensemble meta machine learning for predicting the adsorption of anionic and cationic dyes from aqueous solutions using Polymer/graphene/clay/MgFeAl-LTH nanocomposite

被引：28

作者：

BinMakhashen G.M. ^{[1
,2
]}

Bahadi S.A. ^{[3
]}

Al-Jamimi H.A. ^{[1
,2
]}

Onaizi S.A. ^{[3
,4
]}

机构：

[1] Computer Science and Engineering, King Fahd University of Petroleum and Minerals, Dhahran

[2] Research Excellence, King Fahd University of Petroleum & Minerals, Dhahran

[3] Department of Chemical Engineering, King Fahd University of Petroleum and Minerals, Dhahran

[4] Interdisciplinary Research Center for Hydrogen and Energy Storage, King Fahd University of Petroleum and Minerals, Dhahran

来源：

Chemosphere | 2024年 / 349卷

关键词：

Artificial intelligence; Extra trees; Machine learning; Meta ensemble models; Polyethyleneimine/graphene oxide/bentonite clay/layered triple hydroxide (PGB-LTH) nanocomposite; Wastewater treatment;

D O I：

10.1016/j.chemosphere.2023.140861

中图分类号：

学科分类号：

摘要：

Adsorption is one of the most promising wastewater treatment methods due to its simplicity and efficacy at ambient temperature and pressure. However, the technical and economic feasibility of this process largely depends on the performance of the utilized adsorbents. In this study, a promising adsorbent made of polyethyleneimine, graphene oxide (GO), bentonite, and MgFeAl-layered triple hydroxide (MgFeAl-LTH) has been synthesized and characterized. The results revealed that the synthesized nanocomposite (abbreviated as PGB-LTH) possesses good porosity and crystallinity. The adsorption performance of the PGB-LTH nanocomposite towards two harmful water pollutants (i.e., methyl orange (MO) and crystal violet (CV)) was investigated, and the results revealed that the nanocomposite outperforms its parental materials (i.e., GO, bentonite, and MgFeAl-LTH). The maximum adsorption capacity (qmax) of MO and CV onto the nanocomposite could reach 1666.7 and 1250.0 mg/g, respectively, as predicted using the Langmuir adsorption isotherm. Additionally, the PGB-LTH nanocomposite is highly reusable with an insignificant decline in performance upon repetitive use. In terms of thermodynamics, MO adsorption onto the nanocomposite is exothermic while CV adsorption is endothermic despite that both dyes adsorb spontaneously as revealed by the negative values of the Gibbs free energy change at all the examined temperatures. The generated adsorption data were utilized for constructing and assessing ensemble meta-machine learning techniques aimed at cost-effective simulation and prediction of the proposed adsorption method. Bagging and boosting methods were developed and evaluated intensively using the obtained adsorption data. The Extra Trees model achieved promising results as evidenced by the high correlation coefficient of 99% as well as low computed RMSE and MAE errors of 11.42 and 5.11, respectively, during the testing phase. These results demonstrate the model strong capability to effectively simulate and predict the adsorption process in question. © 2023 Elsevier Ltd

引用

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