Response surface methodology and artificial neural network for prediction and validation of bisphenol a adsorption onto zeolite imidazole framework

Mahmad, Afzan; Zango, Zakariyya Uba; Noh, Teh Ubaidah; Usman, Fahad; Aldaghri, O.; Ibnaouf, K.H.; Shaharun, Maizatul Shima

doi:10.1016/j.gsd.2023.100925

Cited by 17 publications

(2 citation statements)

References 54 publications

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“…Highly porous ZIF-8 was used in the experiments that included the following factors: BPA concentrations, pH, doses of ZIF-8, and contact time. A combination of these factors led to the best performance, with a BPA removal efficiency of 99.93% [25].…”

Section: Introductionmentioning

confidence: 99%

Clinoptilolite—A Sustainable Material for the Removal of Bisphenol A from Water

Dura,

Stefan,

Chiriac

et al. 2023

Sustainability

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Bisphenol A is a remarkable chemical compound as it has many applications, mainly in the plastics industry, but it also has toxic effects on the environment and human health. This article presents a comparative study regarding the adsorption of BPA on Active carbon and zeolitic tuff, ZTC. In this paper, the characterization of the zeolitic tuff, adsorbent, was carried out from an elemental and mineralogical point of view, and it noted the pore size and elemental distribution, using SEM, EDAX, and XRD analysis. The pore size varies from 30 nm to 10 µm, the atomic ratio is Si/Al ≥ 4, and 80% of the mineralogical composition represents Ca Clinoptilolite zeolites and Ca Clinoptilolite zeolites ((Na1.32K1.28Ca1.72Mg0.52) (Al6.77Si29.23O72)(H2O)26.84). Moreover, a comparative study of the adsorption capacity of bisphenol A, using synthetic solutions on an activated carbon type—Norit GAC 830 W, GAC—as well as on Clinoptilolite-type zeolitic tuff—ZTC, was carried out. The experiments were carried out at a temperature of 20 °C, a pH of 4.11, 6.98, and 8.12, and the ionic strength was assured using 0.01 M and 0.1 M of KCl. The adsorption capacities of GAC and ZTC were 115 mg/g and 50 mg/g, respectively, at an 8.12 pH, and an ionic strength of 0 M. The Langmuir mathematical model best describes the adsorption equilibrium of BPA. The maximum adsorption capacity for both adsorbents increased with an increasing pH, and it decreased with increasing ionic strength.

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Section: Introductionmentioning

confidence: 99%

Clinoptilolite—A Sustainable Material for the Removal of Bisphenol A from Water

Dura,

Stefan,

Chiriac

et al. 2023

Sustainability

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“…Products containing BPA are widely used, and, thus, we can find it in the environment: in the air, soil, natural surface waters and sediments, underground water in landfills, and in wastewater [2]. BPA has the potential to disturb wildlife health and human health [3][4][5][6]. It can influence enzymatic, androgenic, neurological, liver, and reproductive systems at different stages of human life, such as in foetal, child and adult stages [7,8].…”

Section: Introductionmentioning

confidence: 99%

Enhanced Degradation of Bisphenol A via Ultrasound, Assisted by Chemical Treatment

Pahontu (Dura),

Stefan,

Chiriac

et al. 2023

Sustainability

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Ultrasonic technology (US) can be considered a very sustainable and efficient method to remove bisphenol A (BPA) from water. Compared with other methods, the proposed method has some advantages: a simple implementation on existing water treatment and purification facilities, it does not generate residual compounds that produce sludge, a relatively fast time is required for degradation (1–2 h), and high degradation efficiencies. In this work, we present the results regarding BPA degradation efficiency using the ultrasonic technique. The influence of frequency and of some additional compounds, such as carbon tetrachloride (CCl4), FeSO4 7H2O (FS), and ethyl anthraquinone (EAC), were studied. Three different frequencies were used: 1146 kHz, 864 kHz, and 580 kHz, at 50 W. The sampling, performed every 15 min, revealed that the highest BPA degradation was achieved after 60 min. Using the liquid chromatography tandem mass spectrometry (LC-MS/MS) technique, the degradation compounds were identified. Pathways of BPA degradation were also proposed. The use of additives such as CCl4, FS, and EAC proved to have a positive effect on the BPA degradation process assisted by ultrasound. After 60 min of exposure, the degradation capacities reached values of between 50% and 75%, while the mineralization capacities were situated between 20% and 35%. CCl4 and EAC had a more pronounced stimulating action than FS, with the EAC having the highest mineralization capacity, representing around 75% of the degradation capacity.

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