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Abstract

Advanced Adsorbent Materials for the Remediation of Contaminated Waters with Heavy Metals via Enhanced Adsorption Mechanisms †

by
Andreea Miron
1,2,*,
Iulia Elena Neblea
1,
Sorin-Viorel Dolana
1,
Anamaria Zaharia
1,
Ana-Mihaela Gavrilă
1,
Artur J. M. Valente
3,
Tanța-Verona Iordache
1 and
Anita-Laura Chiriac
1
1
National Institute for Research & Development in Chemistry and Petrochemistry—ICECHIM Bucharest, 202 Spl. Independentei, 6th District, 060021 Bucharest, Romania
2
Advanced Polymer Materials Group, University Politehnica of Bucharest, 1-7 Gh. Polizu Street, 011061 Bucharest, Romania
3
Department of Chemistry, Coimbra Chemistry Centre (CQC), University of Coimbra, Rua Larga, 3004-535 Coimbra, Portugal
*
Author to whom correspondence should be addressed.
†
Presented at the 19th International Symposium “Priorities of Chemistry for a Sustainable Development”, Bucharest, Romania, 11–13 October 2023.
Proceedings 2023, 90(1), 6; https://doi.org/10.3390/proceedings2023090006
Published: 6 December 2023
(This article belongs to the Proceedings of 19th International Symposium “Priorities of Chemistry for a Sustainable Development”)
Versions Notes

Abstract

:
The study depicts the synthesis and potential application of composite materials based on natural polymers (such as chitosan, alginate) with incorporated inorganic substance in their matrix (zeolites, TiO2, CNT) to adsorb heavy metals ions from contaminated aqueous sources.

Introduction: Heavy metals in water can lead to significant environmental and human health problems. These kinds of toxic substances, such as lead, copper, nickel, mercury, cadmium, and arsenic, can infiltrate inside water bodies through industrial discharge, agricultural, and some natural geological processes. Drinking and bathing water sources can become contaminated and can affect the aquatic ecosystem when the quantity of heavy metals is excessive. Additionally, heavy metal pollution of water sources can harm aquatic life. Therefore, it is crucial to control and remove heavy metals from water sources in order to safeguard the ecosystem and the health of the general public [1].
The need to discover new, economically viable techniques (in terms of low cost, simplicity, and fast appliance) and materials that can be used to successfully remove heavy metals from water has become a new trend in research [2].
In this manner, adsorption of heavy metal ions using adsorbent materials can be efficiently used over other typical removal methods (such as reverse osmosis, ion exchange, electrochemical treatments, and chemical precipitation).
Composite materials based on natural polymers (such as chitosan, alginate) with inorganic substances incorporated in their matrix (zeolites, TiO2, CNT) have attracted attention due to the combination of the properties of two different classes of compounds in a single material. The adsorption process generally depends on several factors, such as pH, temperature, and the nature of the adsorbent material [3].
Materials and methods: Adsorbent materials were synthesized from natural polymers as an organic matrix, and a zeolite-based composite was used as a filler. In this study, the method of obtaining adsorbent materials based on natural polymers and an inorganic matrix did not require a long time or resource-intensive processes. To determine the adsorption capacity of heavy metals in simulated laboratory waters, a kinetic study was carried out.
Results: The adsorption capacity of the composite material was analyzed using atomic absorption spectroscopy (AAS). In addition, Fourier-transform infrared spectroscopy (FTIR) and thermal gravimetric analysis (TGA) were used to evaluate the chemical composition and thermal properties of the adsorbents.
Conclusions: In summary, adsorbent materials based on natural polymers and inorganic fillers offer a viable solution for the removal of heavy metals from water.

Author Contributions

Conceptualization, A.-L.C. and T.-V.I.; methodology, A.M. and A.-L.C.; validation, A.J.M.V., A.-L.C. and T.-V.I.; formal analysis, I.E.N., A.Z., S.-V.D., and A.-M.G.; investigation, A.M., A.-L.C.; writing—original draft preparation, A.M.; writing—review and editing, T.-V.I.; supervision, A.-L.C.; project administration, A.-L.C. All authors have read and agreed to the published version of the manuscript.

Funding

This work was supported by the Ministry of Research, Innovation and Digitization through development system, Subprogram 1.2—Institutional performance—Projects to finance excellence in RDI, contract no. 15PFE/2021, and by UEFISCDI under project 135TE/2022 I-ON-MEM.

Institutional Review Board Statement

Not applicable.

Informed Consent Statement

Not applicable.

Data Availability Statement

The supporting data are available from the corresponding author.

Conflicts of Interest

The authors declare no conflict of interest.

References

  1. Mitra, S.; Chakraborty, A.J.; Tareq, A.M.; Emran, T.B.; Nainu, F.; Khusro, A.; Idris, A.M.; Khandaker, M.U.; Osman, H.; Alhumaydhi, F.A.; et al. Impact of heavy metals on the environment and human health: Novel therapeutic insights to counter the toxicity. J. King Saud Univ. Sci. 2022, 34, 101865. [Google Scholar] [CrossRef]
  2. Rui, M.P.S.; Joao, P.H.M.; Joaquim, R.C.R.; Ricardo, J.L.L. A comparative study of alginate beads and an ion-exchange resin for the removal of heavy metals from a metal plating effluent. J. Environ. Sci. Health A 2008, 43, 1311–1317. [Google Scholar]
  3. Qasem, N.A.A.; Mohammed, R.H.; Lawal, D.U. Removal of heavy metal ions from wastewater: A comprehensive and critical review, NPJ. Clean Water 2021, 4, 36. [Google Scholar] [CrossRef]
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Share and Cite

MDPI and ACS Style

Miron, A.; Neblea, I.E.; Dolana, S.-V.; Zaharia, A.; Gavrilă, A.-M.; Valente, A.J.M.; Iordache, T.-V.; Chiriac, A.-L. Advanced Adsorbent Materials for the Remediation of Contaminated Waters with Heavy Metals via Enhanced Adsorption Mechanisms. Proceedings 2023, 90, 6. https://doi.org/10.3390/proceedings2023090006

AMA Style

Miron A, Neblea IE, Dolana S-V, Zaharia A, Gavrilă A-M, Valente AJM, Iordache T-V, Chiriac A-L. Advanced Adsorbent Materials for the Remediation of Contaminated Waters with Heavy Metals via Enhanced Adsorption Mechanisms. Proceedings. 2023; 90(1):6. https://doi.org/10.3390/proceedings2023090006

Chicago/Turabian Style

Miron, Andreea, Iulia Elena Neblea, Sorin-Viorel Dolana, Anamaria Zaharia, Ana-Mihaela Gavrilă, Artur J. M. Valente, Tanța-Verona Iordache, and Anita-Laura Chiriac. 2023. "Advanced Adsorbent Materials for the Remediation of Contaminated Waters with Heavy Metals via Enhanced Adsorption Mechanisms" Proceedings 90, no. 1: 6. https://doi.org/10.3390/proceedings2023090006

APA Style

Miron, A., Neblea, I. E., Dolana, S. -V., Zaharia, A., Gavrilă, A. -M., Valente, A. J. M., Iordache, T. -V., & Chiriac, A. -L. (2023). Advanced Adsorbent Materials for the Remediation of Contaminated Waters with Heavy Metals via Enhanced Adsorption Mechanisms. Proceedings, 90(1), 6. https://doi.org/10.3390/proceedings2023090006

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