| dc.creator | Oliveira T.F.D. | |
| dc.creator | Ribeiro E.S. | |
| dc.creator | Segatelli M.G. | |
| dc.creator | Tarley C.R.T. | |
| dc.date | 2013 | |
| dc.date | 2015-06-25T19:18:35Z | |
| dc.date | 2015-11-26T15:16:19Z | |
| dc.date | 2015-06-25T19:18:35Z | |
| dc.date | 2015-11-26T15:16:19Z | |
| dc.date.accessioned | 2018-03-28T22:26:10Z | |
| dc.date.available | 2018-03-28T22:26:10Z | |
| dc.identifier | | |
| dc.identifier | Chemical Engineering Journal. , v. 221, n. , p. 275 - 282, 2013. | |
| dc.identifier | 13858947 | |
| dc.identifier | 10.1016/j.cej.2013.02.008 | |
| dc.identifier | http://www.scopus.com/inward/record.url?eid=2-s2.0-84874556841&partnerID=40&md5=7554975c159c7a8595e228b31f99c471 | |
| dc.identifier | http://www.repositorio.unicamp.br/handle/REPOSIP/89769 | |
| dc.identifier | http://repositorio.unicamp.br/jspui/handle/REPOSIP/89769 | |
| dc.identifier | 2-s2.0-84874556841 | |
| dc.identifier.uri | http://repositorioslatinoamericanos.uchile.cl/handle/2250/1259229 | |
| dc.description | The main goal of the present work was to evaluate the effect of protoporphyrin (PP) (as pendant group) incorporated into a poly(vinylpyridine) [poly(VPY)] polymer network on the sorption of Mn2+ ions from an aqueous medium. The sorbent materials - poly(PP-co-VPY) and poly(VPY) - were characterized by SEM, FTIR, elemental analysis and nitrogen adsorption-desorption measurements (BET - Barrett-Joyner-Halenda and BJH - Brunauer-Emmett-Teller). It was observed that the pseudo-second-order kinetic model fitted the experimental data very well (R2=0.9967), confirming that the Mn2+ sorption onto poly(PP-co-VPY) took place via chemical reactions (chemisorption). To describe the equilibrium between the Mn2+ ions and sorbents and estimate the maximum sorption capacity, different models, including Langmuir, Freundlich, Dubinin-Radushkevich and dual-site non-linear Langmuir-Freundlich equations, were applied to the experimental data. The dual-site Langmuir-Freundlich model provided the best fit for poly(PP-co-VPY) and poly(VPY), yielding the maximum sorption capacity of 5.0 and 1.79mgg-1, respectively. These findings suggest the presence of homogeneous and heterogeneous binding sites able to sorb Mn2+ ions. Binary solutions of Mn2+/Zn2+, Mn2+/Pb2+ and Mn2+/Fe3+ were submitted to competitive sorption in the polymers. The results obtained for these systems demonstrated 4.75, 18.24 and 388-fold increases in the rate of the Mn2+ sorption onto poly(PP-co-VPY), when compared with poly(VPY). The protoporphyrin incorporation into poly(VPY) network appears to be an interesting approach to polymer synthesis by the homogeneous solution method focused on the preparation of solid-phase extraction columns. © 2013 Elsevier B.V. | |
| dc.description | 221 | |
| dc.description | | |
| dc.description | 275 | |
| dc.description | 282 | |
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| dc.language | en | |
| dc.publisher | | |
| dc.relation | Chemical Engineering Journal | |
| dc.rights | fechado | |
| dc.source | Scopus | |
| dc.title | Enhanced Sorption Of Mn2+ Ions From Aqueous Medium By Inserting Protoporphyrin As A Pendant Group In Poly(vinylpyridine) Network | |
| dc.type | Artículos de revistas | |
