Adsorption of Zn(II) IONS by Ziziphus joazeiro barks in aqueous solutions
In this study, five types of “Juá” bark (Ziziphus joazeiro) were investigated for the removal of Zn(II) ions from aqueous solutions. The tested samples were natural barks, natural powder, washed with water (WW), washed with ethanol at 80 % (EE), and washed with 0.5 N NaOH. The adsorptive tests inves...
| Հիմնական հեղինակներ: | , , , , , , , , |
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| Ձևաչափ: | Հոդված |
| Լեզու: | English |
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Elsevier
2024-01-01
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| Շարք: | Results in Chemistry |
| Խորագրեր: | |
| Առցանց հասանելիություն: | http://www.sciencedirect.com/science/article/pii/S2211715624000353 |
| _version_ | 1827369220808114176 |
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| author | Yannice Tatiane da Costa Santos Gilvânia Pereira da Costa Jorge Marcell Coelho Menezes João Victor Serra Nunes Ahmad Hosseini-Bandegharaei Henrique Douglas Melo Coutinho Diniz Sena Júnior Francisco José de Paula Filho Raimundo Nonato Pereira Teixeira |
| author_facet | Yannice Tatiane da Costa Santos Gilvânia Pereira da Costa Jorge Marcell Coelho Menezes João Victor Serra Nunes Ahmad Hosseini-Bandegharaei Henrique Douglas Melo Coutinho Diniz Sena Júnior Francisco José de Paula Filho Raimundo Nonato Pereira Teixeira |
| author_sort | Yannice Tatiane da Costa Santos |
| collection | DOAJ |
| description | In this study, five types of “Juá” bark (Ziziphus joazeiro) were investigated for the removal of Zn(II) ions from aqueous solutions. The tested samples were natural barks, natural powder, washed with water (WW), washed with ethanol at 80 % (EE), and washed with 0.5 N NaOH. The adsorptive tests investigated were kinetics, equilibrium isotherms, thermodynamics, and desorption. The WW adsorbent presented better adsorption with the metal confirmed by scanning electronic microscopy with electronic dispersive spectroscopy (SEM-EDS). After reaching the equilibrium time, all adsorbents, except NaOH, presented a reduction in the adsorptive capacity, indicating the behavior of disassociation of Zn(II) ions from the material when exposed to times greater than 60 min. Physical adsorption was confirmed for the WW adsorbent by associating the FTIR spectrum, as well as the ΔH° being less than 80 kJ.mol−1 and the easy recoverable due to desorption being 100 % of the metal after 10 min of contact with the solution acid. These conditions suggest an adsorption mechanism through hydrogen bonds between the water molecules solvated with zinc and the carboxylic groups of the adsorbent. The isotherm at 25 °C showed the formation of two distinct layers where the best fit for BET liquid phase adsorption isotherm, and a maximum removal of 71.9 % for the first stage. At first equilibrium, the best-fit isotherm (Sips) presented characteristics of homogeneous systems (monolayer), and the thermodynamic conditions demonstrate that adsorption is endothermic and viable adsorption mainly from 25 °C. |
| first_indexed | 2024-03-08T09:42:08Z |
| format | Article |
| id | doaj.art-c4c5759c280b48d4b973d9a0e8961737 |
| institution | Directory Open Access Journal |
| issn | 2211-7156 |
| language | English |
| last_indexed | 2024-03-08T09:42:08Z |
| publishDate | 2024-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Chemistry |
| spelling | doaj.art-c4c5759c280b48d4b973d9a0e89617372024-01-30T04:14:52ZengElsevierResults in Chemistry2211-71562024-01-017101339Adsorption of Zn(II) IONS by Ziziphus joazeiro barks in aqueous solutionsYannice Tatiane da Costa Santos0Gilvânia Pereira da Costa1Jorge Marcell Coelho Menezes2João Victor Serra Nunes3Ahmad Hosseini-Bandegharaei4Henrique Douglas Melo Coutinho5Diniz Sena Júnior6Francisco José de Paula Filho7Raimundo Nonato Pereira Teixeira8Federal Institute of Education, Science and Technology of Ceará – campus Juazeiro do Norte, Av. Plácido Aderaldo Castelo, 1646, 63.040-540 Juazeiro do Norte, Ceará, Brazil; Department of Biological Chemistry, Regional University of Cariri, R. Cel. Antonio Luis 1161, 63105000 Crato, Ceará, Brazil; Corresponding authors at: Federal Institute of Education, Science and Technology of Ceará – campus Juazeiro do Norte, Av. Plácido Aderaldo Castelo, 1646, 63.040-540 Juazeiro do Norte, Ceará, Brazil..Federal Institute of Education, Science and Technology of Ceará – campus Juazeiro do Norte, Av. Plácido Aderaldo Castelo, 1646, 63.040-540 Juazeiro do Norte, Ceará, BrazilScience and Technology Center, Federal University of Cariri, Av. Ten. Raimundo Rocha, 1639, 63048-080 Juazeiro do Norte, Ceará, BrazilAnalitycal Center, Federal University of Ceará – campus Pici, Av. Humberto Monte, N/N, 60.440-900 Fortaleza, Ceará, BrazilFaculty of Chemistry, Semnan University, Semnan, IranDepartment of Biological Chemistry, Regional University of Cariri, R. Cel. Antonio Luis 1161, 63105000 Crato, Ceará, Brazil; Corresponding authors at: Federal Institute of Education, Science and Technology of Ceará – campus Juazeiro do Norte, Av. Plácido Aderaldo Castelo, 1646, 63.040-540 Juazeiro do Norte, Ceará, Brazil..Department of Biological Chemistry, Regional University of Cariri, R. Cel. Antonio Luis 1161, 63105000 Crato, Ceará, BrazilScience and Technology Center, Federal University of Cariri, Av. Ten. Raimundo Rocha, 1639, 63048-080 Juazeiro do Norte, Ceará, BrazilDepartment of Biological Chemistry, Regional University of Cariri, R. Cel. Antonio Luis 1161, 63105000 Crato, Ceará, BrazilIn this study, five types of “Juá” bark (Ziziphus joazeiro) were investigated for the removal of Zn(II) ions from aqueous solutions. The tested samples were natural barks, natural powder, washed with water (WW), washed with ethanol at 80 % (EE), and washed with 0.5 N NaOH. The adsorptive tests investigated were kinetics, equilibrium isotherms, thermodynamics, and desorption. The WW adsorbent presented better adsorption with the metal confirmed by scanning electronic microscopy with electronic dispersive spectroscopy (SEM-EDS). After reaching the equilibrium time, all adsorbents, except NaOH, presented a reduction in the adsorptive capacity, indicating the behavior of disassociation of Zn(II) ions from the material when exposed to times greater than 60 min. Physical adsorption was confirmed for the WW adsorbent by associating the FTIR spectrum, as well as the ΔH° being less than 80 kJ.mol−1 and the easy recoverable due to desorption being 100 % of the metal after 10 min of contact with the solution acid. These conditions suggest an adsorption mechanism through hydrogen bonds between the water molecules solvated with zinc and the carboxylic groups of the adsorbent. The isotherm at 25 °C showed the formation of two distinct layers where the best fit for BET liquid phase adsorption isotherm, and a maximum removal of 71.9 % for the first stage. At first equilibrium, the best-fit isotherm (Sips) presented characteristics of homogeneous systems (monolayer), and the thermodynamic conditions demonstrate that adsorption is endothermic and viable adsorption mainly from 25 °C.http://www.sciencedirect.com/science/article/pii/S2211715624000353Juá. Adsorbent. Heavy metal. Lignocellulosic. Isotherms. Hydorgen bonds |
| spellingShingle | Yannice Tatiane da Costa Santos Gilvânia Pereira da Costa Jorge Marcell Coelho Menezes João Victor Serra Nunes Ahmad Hosseini-Bandegharaei Henrique Douglas Melo Coutinho Diniz Sena Júnior Francisco José de Paula Filho Raimundo Nonato Pereira Teixeira Adsorption of Zn(II) IONS by Ziziphus joazeiro barks in aqueous solutions Results in Chemistry Juá. Adsorbent. Heavy metal. Lignocellulosic. Isotherms. Hydorgen bonds |
| title | Adsorption of Zn(II) IONS by Ziziphus joazeiro barks in aqueous solutions |
| title_full | Adsorption of Zn(II) IONS by Ziziphus joazeiro barks in aqueous solutions |
| title_fullStr | Adsorption of Zn(II) IONS by Ziziphus joazeiro barks in aqueous solutions |
| title_full_unstemmed | Adsorption of Zn(II) IONS by Ziziphus joazeiro barks in aqueous solutions |
| title_short | Adsorption of Zn(II) IONS by Ziziphus joazeiro barks in aqueous solutions |
| title_sort | adsorption of zn ii ions by ziziphus joazeiro barks in aqueous solutions |
| topic | Juá. Adsorbent. Heavy metal. Lignocellulosic. Isotherms. Hydorgen bonds |
| url | http://www.sciencedirect.com/science/article/pii/S2211715624000353 |
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