Binary adsorption of copper and sulfates on barium-modified clinoptilolite
| creativework.keywords | Binary adsorption, Cu2+ cations, Modified clinoptilolite, SO4 2- anions | |
| creativework.publisher | University of Chemical Technology and Metallurgyjournal@uctm.edu | en |
| dc.contributor.author | Lavrova-Popova S. | |
| dc.contributor.author | Yaneva Z. | |
| dc.date.accessioned | 2024-07-16T11:16:48Z | |
| dc.date.accessioned | 2024-07-16T11:18:51Z | |
| dc.date.available | 2024-07-16T11:16:48Z | |
| dc.date.available | 2024-07-16T11:18:51Z | |
| dc.date.issued | 2018-01-01 | |
| dc.description.abstract | The binary adsorption of copper cations and sulfate anions by surface modified natural clinoptilolite was investigated. The efficiency of the adsorbent was studied using batch adsorption technique under different experimental conditions by varying parameters such as initial ions concentration in the aqueous solution, clinoptilolite mass and contact time. An assessment of the equilibrium and the kinetics of copper and sulfates ions sorption was made. The experimental results were fitted to the Freundlich, Baudu, and the Multilayer isotherms. It was established that the Baudu isotherm best describe the binary removal of Cu2+ and SO4 2- by modified clinoptilolite with incorporated barium ions on its surface (CLIBa). Before the clinoptilolite modification (CLI), the removal of both copper and sulfate ions was best described by Baudu and Multilayer isotherms, respectively. The removal of Cu2+ is probably due to physiosorption, while that of SO4 2- - to at least two different in nature mechanisms - complexation and adsorption. The Ba-modification of the natural clinoptilolite led to a 1.1 times decrease and 4.8 times increase of the copper and sulfate removal efficiency. The kinetics of Cu2+ and SO4 2- adsorption onto modified clinoptilolite followed pseudo second-order model which suggests that both ions were adsorbed on the CLIBa surface via chemical interaction and intraparticle diffusion mechanisms. | |
| dc.identifier.issn | 1314-7978 | |
| dc.identifier.issn | 1314-7471 | |
| dc.identifier.scopus | SCOPUS_ID:85047398133 | en |
| dc.identifier.uri | https://rlib.uctm.edu/handle/123456789/1217 | |
| dc.language.iso | en | |
| dc.source.uri | https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85047398133&origin=inward | |
| dc.title | Binary adsorption of copper and sulfates on barium-modified clinoptilolite | |
| dc.type | Article | |
| oaire.citation.issue | 4 | |
| oaire.citation.volume | 53 |