Szczegóły publikacji
Opis bibliograficzny
Adsorptive removal of Cr(III) ions from aqueous solutions using magnetic activated carbon / Jakub MOKRZYCKI, Agnieszka ORZECHOWSKA-ZIĘBA, Waldemar TOKARZ, Katarzyna BERENT, Eliza WOLAK // Chemical and Process Engineering: New Frontiers [Dokument elektroniczny]. — Czasopismo elektroniczne ; ISSN 2300-1925 . — Tytuł poprz.: Inżynieria Chemiczna i Procesowa. — 2026 — vol. 47 no. 1 art. no. e128, s. 1–12. — Wymagania systemowe: Adobe Reader. — Bibliogr. s. 10–12, Abstr.
Autorzy (5)
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Dane bibliometryczne
| ID BaDAP | 166915 |
|---|---|
| Data dodania do BaDAP | 2026-04-08 |
| Tekst źródłowy | URL |
| DOI | 10.24425/cpe.2026.158126 |
| Rok publikacji | 2026 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Creative Commons | |
| Czasopismo/seria | Inżynieria Chemiczna i Procesowa = Chemical and Process Engineering |
Abstract
Water contamination with heavy metals, including chromium ions, poses a significant environmental and health threat because of their toxic, carcinogenic, and mutagenic properties. Although Cr(III) is an essential trace element, its potential oxidation to Cr(VI) necessitates effective removal strategies. Among various techniques, adsorption is considered the most cost-effective and efficient method for chromium removal. Activated carbons (ACs), owing to their high surface area and porosity, are widely used adsorbents. However, their recovery from aqueous systems is challenging. To address this, magnetic activated carbons were synthesized by impregnating ACs with iron oxide (Fe3O4) nanoparticles via co-precipitation, enabling easy separation using an external magnetic field. The modified activated carbons obtained were characterised by XRD, N2 sorption at −196 ◦C, FT-IR, SEM-EDS, iodine adsorption number analysis, and magnetisation measurements. Their adsorption performance for the removal of Cr(III) ions was evaluated at an adsorbent dose of 1 g · L−1 and a solution pH of 5.00, using initial Cr(III) concentrations ranging from 30 to 400 mg · L−1 , which fall within the moderate concentration range typical of industrial wastewater. The data were fitted to Langmuir and Freundlich isotherm models to elucidate the adsorption mechanisms. From the obtained results it was proved, that the introduction of iron nanoparticles onto the surface of the AC, did not cause a significant decrease in the adsorption properties. The adsorption capacity varied in the range from 22.37 to 25.84 mg Cr(III) g−1. In addition, the effects of solution pH, adsorbent dose, adsorption temperature, and three successive adsorption cycles were investigated using single-point adsorption experiments.
