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

Author

Listed:
  • Alina Marilena Dura

    (Faculty of Chemical Engineering and Biotechnologies, National University of Science and Technology POLITEHNICA Bucharest, 1-7 Polizu Street, 011061 Bucharest, Romania)

  • Daniela Simina Stefan

    (Faculty of Chemical Engineering and Biotechnologies, National University of Science and Technology POLITEHNICA Bucharest, 1-7 Polizu Street, 011061 Bucharest, Romania)

  • Florentina Laura Chiriac

    (National Institute for Research and Development for Industrial Ecology—INCD ECOIND, 57-73 Drumul Podu Dambovitei Street, District 6, 060652 Bucharest, Romania)

  • Roxana Trusca

    (Faculty of Engineering in Foreign Languages (FILS), National University of Science and Technology POLITEHNICA Bucharest, 313 Splaiul Independenței Street, 011061 Bucharest, Romania)

  • Adrian Ionut Nicoara

    (Faculty of Chemical Engineering and Biotechnologies, National University of Science and Technology POLITEHNICA Bucharest, 1-7 Polizu Street, 011061 Bucharest, Romania)

  • Mircea Stefan

    (Pharmacy Faculty, University Titu Maiorescu, No. 22 Dâmbovnicului Street, District 4, 040441 Bucharest, Romania)

Abstract

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 ((Na 1.32 K 1.28 Ca 1.72 Mg 0.52 ) (Al 6.77 Si 29.23 O 72 )(H 2 O) 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.

Suggested Citation

  • Alina Marilena Dura & Daniela Simina Stefan & Florentina Laura Chiriac & Roxana Trusca & Adrian Ionut Nicoara & Mircea Stefan, 2023. "Clinoptilolite—A Sustainable Material for the Removal of Bisphenol A from Water," Sustainability, MDPI, vol. 15(17), pages 1-15, September.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:17:p:13253-:d:1232654
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    Cited by:

    1. Thaaer Hameed Abed & Daniela Simina Stefan & Daniela Cristina Berger & Nicolaie Cicerone Marinescu & Mircea Stefan, 2024. "Performance Evaluation of a Romanian Zeolite: A Sustainable Material for Removing Ammonium Ions from Water," Sustainability, MDPI, vol. 16(18), pages 1-17, September.

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