Implementation of Magnetic Nanostructured Adsorbents for Heavy Metals Separation from Textile Wastewater

Marco Barozzi, Sabrina Copelli, Eleonora Russo, Paolo Sgarbossa, Maria Cristina Lavagnolo, Annalisa Sandon, Cristiana Morosini and Elisabetta Sieni ()
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Marco Barozzi: Department of Science and High Technology, University of Insubria, via Valleggio 9, 22100 Como, Italy
Sabrina Copelli: Department of Science and High Technology, University of Insubria, via Valleggio 9, 22100 Como, Italy
Eleonora Russo: Department of Industrial Engineering, University of Padova, via F. Marzolo 9, 35131 Padova, Italy
Paolo Sgarbossa: Department of Industrial Engineering, University of Padova, via F. Marzolo 9, 35131 Padova, Italy
Maria Cristina Lavagnolo: Department of Civil, Environmental and Architectural Engineering, University of Padova, via F. Marzolo 9, 35131 Padova, Italy
Annalisa Sandon: Department of Civil, Environmental and Architectural Engineering, University of Padova, via F. Marzolo 9, 35131 Padova, Italy
Cristiana Morosini: Department of Science and High Technology, University of Insubria, via Valleggio 9, 22100 Como, Italy
Elisabetta Sieni: Department of Theoretical and Applied Sciences, University of Insubria, via Jean Henry Dunant 3, 21100 Varese, Italy

Sustainability, 2022, vol. 14, issue 18, 1-13

Abstract: In the framework of sustainability, water shortages and water pollution are two important aspects to be considered. Proposing efficient and low-impact technologies is of paramount importance to promote circular economies associated with the use of water in the industrial context, especially in the textile industry. In this work, the application of a set of magnetic nanostructured adsorbents (MNAs) to cleanse metal ions from textile wastewaters was studied and analyzed. MNAs were generated with a low-cost process, involving iron (II/III) salts (e.g., chlorides), sodium or ammonium hydroxide solutions, and graphene oxide, obtained from graphite by a modified Hummers’ method at room temperature. The shape and the size were studied with transmission electron microscopy. Adsorbents were tested with different metal ions (e.g., copper, chromium (III), and nickel). Metal ion concentrations were analyzed by means of inductively coupled plasma optical emission spectroscopy (ICP-OES), and adsorption isotherms were characterized. From the results, the MNAs exhibited the capability of removing metal ions up to a yield of 99% for Cr 3+ , 94.7% for Cu 2+ , and 91.4% for Ni 2+ , along with adsorption loads up to 4.56 mg/g of MNAs.

Keywords: wastewater; adsorption; nanoadsorbents; graphene oxide; magnetic nanoparticles (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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