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https://hdl.handle.net/1822/75592
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Campo DC | Valor | Idioma |
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dc.contributor.author | Silva, Mónica A. | por |
dc.contributor.author | Belmonte-Reche, Efres | por |
dc.contributor.author | Amorim, M. T. Pessoa de | por |
dc.date.accessioned | 2022-01-19T12:21:29Z | - |
dc.date.available | 2022-01-19T12:21:29Z | - |
dc.date.issued | 2021-10-18 | - |
dc.identifier.citation | Silva, M.A.; Belmonte-Reche, E.; de Amorim, M.T.P. Combining Experimental Data with Statistical Methods to Evaluate Hydrolyzed Reactive Dye Removal by α-Fe2O3 in a Cellulose-Based Membrane. Fibers 2021, 9, 61. https://doi.org/10.3390/fib9100061 | por |
dc.identifier.uri | https://hdl.handle.net/1822/75592 | - |
dc.description.abstract | Water contaminated with toxic dyes poses serious problems for human health and environmental ecosystems. Unfixed reactive dyes and their hydrolyzed form are soluble in water, thus, their removal is particularly challenging. Among the different methodologies, adsorption is probably the most common since it is easy to handle and has a low cost. Here, the removal by adsorption of hydrolyzed Reactive Black 5 (hydRB5) from a model wastewater through cellulose acetate/hematite membranes (CA/α-Fe<sub>2</sub>O<sub>3</sub>), designated as M1, M2 and M3, was performed. The pristine cellulose acetate membrane (CA) was designated as M0. Toward understanding the adsorption mechanism of hydRB5 on membranes, the rate of adsorption and maximum value of the adsorption capacity were evaluated using kinetic and isothermal studies, respectively. The results showed that the adsorption mechanism follows pseudo-first-order kinetics, and data are best fitted by the Langmuir isotherm method with a maximum adsorption capacity of 105.26 mg g<sup>−1</sup> in pH~7. Furthermore, these membranes can be also regenerated by washing with NaOH and NaCl solutions, and the regeneration efficiency remains effective over five cycles. To complete the work, two statistical models were applied, an Analysis of Variance (ANOVA) and a Response Surface Methodology (RSM). The optimum value found is located in the usable region, and the experimental validation shows good agreement between the predicted optimum values and the experimental data. These composite membranes are also good candidates for the adsorption of other pollutants, even at industrial scale, due to their effective regeneration process and low production costs. | por |
dc.description.sponsorship | This work was funded by NORTE2020, funding reference NORTE-01-0145-FEDER-000015, within the Project TSSiPRO-Technologies for Sustainable and Smart Innovative Products, and also by national funds through FCT—Foundation for Science and Technology within the scope of the PROJECT UID/CTM/00264/2013. | por |
dc.language.iso | eng | por |
dc.publisher | Multidisciplinary Digital Publishing Institute | por |
dc.relation | info:eu-repo/grantAgreement/FCT/5876/147331/PT | por |
dc.rights | openAccess | por |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | por |
dc.subject | Nanocomposite membranes | por |
dc.subject | Cellulose acetate | por |
dc.subject | Nanoparticles | por |
dc.subject | Reactive dyes | por |
dc.subject | Hydrolysis | por |
dc.subject | Adsorption capacity | por |
dc.subject | Pseudo-first-order | por |
dc.subject | Langmuir | por |
dc.subject | Regeneration | por |
dc.subject | Design of experiments | por |
dc.title | Combining experimental data with statistical methods to evaluate hydrolyzed reactive dye removal by α-Fe2O3 in a cellulose-based membrane | por |
dc.type | article | por |
dc.peerreviewed | yes | por |
dc.relation.publisherversion | https://www.mdpi.com/2079-6439/9/10/61 | por |
oaire.citationStartPage | 1 | por |
oaire.citationEndPage | 23 | por |
oaire.citationIssue | 10 | por |
oaire.citationVolume | 9 | por |
dc.date.updated | 2021-10-22T13:55:30Z | - |
dc.identifier.eissn | 2079-6439 | - |
dc.identifier.doi | 10.3390/fib9100061 | por |
dc.subject.wos | Science & Technology | por |
sdum.journal | Fibers | por |
oaire.version | VoR | por |
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fibers-09-00061.pdf | 2,65 MB | Adobe PDF | Ver/Abrir |
Este trabalho está licenciado sob uma Licença Creative Commons