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ORIGINAL RESEARCH article

Front. Chem.
Sec. Green and Sustainable Chemistry
Volume 12 - 2024 | doi: 10.3389/fchem.2024.1393791
This article is part of the Research Topic Advances in Nanotechnology for the Removal and Detection of Emerging Contaminants From Water View all 4 articles

Retrieval of Cu 2+ and Cd 2+ ions from Aqueous Solutions Using Sustainable Guar gum/PVA/montmorillonite Nanocomposite Films: Effect of Temperature and Adsorption Isotherms

Provisionally accepted
Dr. Haifa Abdul Aziz AL-Haithloul Dr. Haifa Abdul Aziz AL-Haithloul 1Ibtisam M. Alsudays Ibtisam M. Alsudays 2Elsayed G. Zaki Elsayed G. Zaki 3*Shimaa Saeed Shimaa Saeed 3*Amal Mubark Amal Mubark 4Lurana Salib Lurana Salib 5Gehan Safwat Gehan Safwat 5*Gniewko Niedbała Gniewko Niedbała 6Ayman Diab Ayman Diab 5*Mohamed A. Abdein Mohamed A. Abdein 7Amr A. Elkelish Amr A. Elkelish 8
  • 1 Jouf University, Sakakah, Al Jawf, Saudi Arabia
  • 2 Qassim University, Buraidah, Al-Qassim, Saudi Arabia
  • 3 Egyptian Petroleum Research Institute, Cairo, Cairo, Egypt
  • 4 Nuclear Materials Authority (Egypt), Cairo, Cairo, Egypt
  • 5 October University for Modern Sciences and Arts, 6th of October City, Giza, Egypt
  • 6 Poznań University of Technology, Poznań, Greater Poland, Poland
  • 7 Independent researcher, Mansoura, Egypt
  • 8 Suez Canal University, Ismaïlia, Egypt

The final, formatted version of the article will be published soon.

    Uncontrolled or improperly managed wastewater is considered toxic and dangerous to plants, animals, and people, as well as negatively impacting the ecosystem. In this research, the use of we aimed to prepare polymer nanocomposites (guar gum/ polyvinyl alcohol, and nano-montmorillonite clay) for eliminating heavy metals from waterbased systems, especially Cu 2+ and Cd 2+ ions. The synthesis of nanocomposites was done by the green method with different ratios of guar gum to PVA (50/50), (60/40), and (80/20) wt%, in addition to glycerol that acts as a crosslinker. Fourier-transform infrared spectroscopy (FT-IR) analysis of the prepared (guar gum/PVA/MMT) polymeric nano-composites' structure and morphology revealed the presence of both guar gum and PVA's functional groups in the polymeric network matrix. Transmission electron microscopy (TEM) analysis was also performed, which verified the creation of a nanocomposite. Furthermore, theromgravimetric analysis (TGA) demonstrated the biocomposites' excellent thermal properties. For those metal ions, the extreme uptake was found at pH 6.0 in each instance. The Equilibrium uptake capacities of the three prepared nanocomposites were achieved within 240 minutes. The maximal capacities were found to be 95, 89 and 84 mg/g for Cu 2+ , and for Cd 2+ were found to be 100, 91, 87 mg/g for guar gum (80/20, 60/40 and 50/50), respectively. The pseudo-2 nd -order model with R 2 > 0.98 was demonstrated to be followed by the adsorption reaction, according to the presented results. In less than four hours, the adsorption equilibrium was reached. Furthermore, a 1% EDTA solution could be used to revitalize the metalion-loaded nanocomposites for several cycles. The most promising nanocomposite with efficiency above 90% for the removal of Cu 2+ and Cd 2+ ions from wastewater was found to have a guar (80/20) weight percentage, according to the results obtained.

    Keywords: wastewater, heavy metal, guar gum, Polyvinyl Alcohol, isotherms, nanocomposite

    Received: 29 Feb 2024; Accepted: 29 May 2024.

    Copyright: © 2024 AL-Haithloul, Alsudays, Zaki, Saeed, Mubark, Salib, Safwat, Niedbała, Diab, Abdein and Elkelish. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

    * Correspondence:
    Elsayed G. Zaki, Egyptian Petroleum Research Institute, Cairo, Cairo, Egypt
    Shimaa Saeed, Egyptian Petroleum Research Institute, Cairo, Cairo, Egypt
    Gehan Safwat, October University for Modern Sciences and Arts, 6th of October City, 12585, Giza, Egypt
    Ayman Diab, October University for Modern Sciences and Arts, 6th of October City, 12585, Giza, Egypt

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