The Influence of Different Parameters for the Removal of Pb and Zn Ions on Unmodified Waste Eggshells.

Elena Petronela Bran, Oana-Irina Patriciu, Luminița Grosu, Irina-Claudia Alexa, Brîndușa Bălănucă, Adrian-Ionuț Nicoară, Adriana-Luminița Fînaru

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Article in Materials (Basel, Switzerland), 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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1 · What the graph read from it

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5 · Who and what money

Authors and funding

7 authors.

Elena Petronela BranDoctoral School, "Vasile Alecsandri" University of Bacău, 157, Calea Mărăşeşti, 600115 Bacău, Romania.

Oana-Irina PatriciuDepartment of Chemical and Food Engineering, Faculty of Engineering, "Vasile Alecsandri" University of Bacău, 157, Calea Mărăşeşti, 600115 Bacău, Romania.ORCID 0000-0002-5926-8023

Luminița GrosuDepartment of Chemical and Food Engineering, Faculty of Engineering, "Vasile Alecsandri" University of Bacău, 157, Calea Mărăşeşti, 600115 Bacău, Romania.

Irina-Claudia AlexaDepartment of Chemical and Food Engineering, Faculty of Engineering, "Vasile Alecsandri" University of Bacău, 157, Calea Mărăşeşti, 600115 Bacău, Romania.ORCID 0000-0003-0569-0090

Brîndușa BălănucăDepartment of Organic Chemistry "C. Nenitescu", Faculty of Chemical Engineering and Biotechnologies, National University of Science and Technology Politehnica Bucharest, 1-7, Gheorghe Polizu Street, 011061 Bucharest, Romania.

Adrian-Ionuț NicoarăDepartment of Science and Engineering of Oxide Materials and Nanomaterials, Faculty of Chemical Engineering and Biotechnologies, National University of Science and Technology Politehnica Bucharest, 1-7, Gheorghe Polizu Street, 011061 Bucharest, Romania.ORCID 0000-0002-4133-7377

Adriana-Luminița FînaruDepartment of Chemical and Food Engineering, Faculty of Engineering, "Vasile Alecsandri" University of Bacău, 157, Calea Mărăşeşti, 600115 Bacău, Romania.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The need to use environmentally friendly and cost-effective methods to remove heavy metals from wastewater is a permanent concern worldwide. Eggshells have been indicated as a worthy biosorbent for the adsorption of heavy metals due to their bioavailability and composition. In the present study, the absorption capacity of untreated chicken (CEs) and quail (QEs) eggshells for the removal of Pb and Zn ions from aqueous solutions was evaluated at room temperature and 40 °C, using four types of agitation systems: classical and orbital agitation and ultrasonic and microwave-assisted activation. The monitoring of aqueous solutions was performed by electrochemical and spectro-analytical (AAS) procedures before and after the adsorption process. FTIR and RAMAN spectroscopy, SEM-EDAX microanalysis, and X-ray diffraction were used to investigate the characteristics of eggshell samples post-exposure to Pb

Indexed as

agitation-activation systembiosorptionfood wasteheavy metal

Identifiers

PMID40572925

DOI10.3390/ma18122794

PMCPMC12195198

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