Szczegóły publikacji
Opis bibliograficzny
Copper flotation waste from KGHM as potential sorbent for heavy metal removal from aqueous solutions / Bartosz MIKODA, Agnieszka GRUSZECKA-KOSOWSKA, Agnieszka KLIMEK // Human and Ecological Risk Assessment ; ISSN 1080-7039. — 2017 — vol. 23 iss. 7, s. 1610–1628. — Bibliogr. s. 1625–1628, Abstr. — Publikacja dostępna online od: 2017-06-22
Autorzy (3)
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 107861 |
|---|---|
| Data dodania do BaDAP | 2017-09-07 |
| Tekst źródłowy | URL |
| DOI | 10.1080/10807039.2017.1332476 |
| Rok publikacji | 2017 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Czasopismo/seria | Human and Ecological Risk Assessment |
Abstract
Sorption affinity of copper flotation waste from KGHM toward Cd(II), Cr(III), Cu(II), and Pb(II) ions was investigated in this work. Batch sorption studies, using single-element synthetic aqueous solutions at various pH (2–12), contact time (10–300 min), initial concentration (100–5000 mg dm−3; 1–100 mg dm−3 for Cd(II)) and adsorbent dose (25–200 g dm−3), were performed. Bonding strength of adsorbed metals was tested from the degree of desorption. The maximum metal removal was observed at pH 5–8, ≥120 min reaction time, and 25 g dm−3 adsorbent dose. Maximum sorption capacities of studied material were 41.6, 58.8, and 83.8 mg g−1 for Cr(III), Cu(II), and Pb(II), respectively, for 5000 mg dm−3 initial concentration, and 0.86 mg g−1 for Cd(II) for initial concentration of 50 mg dm−3. Sorption isotherms were very well fitted to Langmuir (Cd, Cr, Pb) and Freundlich (Cu) models. Sorption kinetics was nearly ideally fitted to pseudo-second-order kinetic model. Desorption studies showed that most of Cr(III) (98.5%) and Pb(II) (67.3%) ions remained bound to the surface, indicating that the chemisorption dominated as a controlling process. On the other hand, mostly desorbed were Cd(II) (98.5%) and Cu(II) (90.3%) ions, which indicated that processes like physisorption or precipitation were prevailing.
