POTENTIAL VALORISATION OF PROTOBIND 1000 AS ADSORBENT FOR Pb 2+ AND Zn 2+
The adsorption of metal ions from increasing concentrations in aqueous solutions by modified straw lignin Protobind 1000 was studied. The effect of metallic ion concentrations (from 20.72 to 207.2 mg·L-1 for Pb2+ and from 6.538 to 65.38 mg·L-1 for Zn2+) and contact time (30, 60 and 90 minutes) were...
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| Format: | Article |
| Language: | English |
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Iasi University of Life Sciences
2022-10-01
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| Series: | Journal of Applied Life Sciences and Environment |
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| Online Access: | https://jurnalalse.com/wp-content/uploads/ALSE1-22-04.pdf |
| _version_ | 1797666799547842560 |
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| author | Alina Elena TROFIN Elena UNGUREANU Lucia Carmen TRINCĂ Maria Emiliana FORTUNĂ Diana Beatrice EPERJESSY |
| author_facet | Alina Elena TROFIN Elena UNGUREANU Lucia Carmen TRINCĂ Maria Emiliana FORTUNĂ Diana Beatrice EPERJESSY |
| author_sort | Alina Elena TROFIN |
| collection | DOAJ |
| description | The adsorption of metal ions from increasing concentrations in aqueous solutions by modified straw lignin Protobind 1000 was studied. The effect of metallic ion concentrations (from 20.72 to 207.2 mg·L-1 for Pb2+ and from 6.538 to 65.38 mg·L-1 for Zn2+) and contact time (30, 60 and 90 minutes) were studied at pH = 6 and 200C. Langmuir and Freundlich isotherm equations were applied to assess equilibrium data and the kinetics of the adsorption processes were analysed using Lagergren pseudo first order and Ho&McKay pseudo second order models. The results show that the adsorption processes reached equilibrium after 90 minutes, but similar values were registered after 60 minutes. The Freundlich isotherm described the process better, denoting chemisorption with the formation of ion-lignin complex structures. The Ho&McKay model fit the adsorption data better with regression coefficients equal to 1 compared to the Lagergren model, where the regression factors varied between 0.72 and 0.95. For the maximum concentration of lead solution and the longest adsorption time of 90 minutes, the Ho&McKay model predicted an equilibrium capacity qe of 13.1406 mg·g-1 compared to the 13.1398 mg·g-1 obtained. For zinc adsorption, the same maximum concentration and time were considered, and the pseudo-second order model predicted a qe of 12.6743 mg·g-1 compared to the obtained value of 12.6714 mg·g-1.
The uptake of lead was greater on 0.15 g of adsorbent (a maximum of 27.23 mg·g-1) than the zinc uptake (a maximum of 8.28 mg·g-1), for all analysed concentrations. |
| first_indexed | 2024-03-11T20:04:47Z |
| format | Article |
| id | doaj.art-be03a8d940b9458e99cb8027942450fa |
| institution | Directory Open Access Journal |
| issn | 2784-0379 2784-0360 |
| language | English |
| last_indexed | 2024-03-11T20:04:47Z |
| publishDate | 2022-10-01 |
| publisher | Iasi University of Life Sciences |
| record_format | Article |
| series | Journal of Applied Life Sciences and Environment |
| spelling | doaj.art-be03a8d940b9458e99cb8027942450fa2023-10-04T08:22:29ZengIasi University of Life SciencesJournal of Applied Life Sciences and Environment2784-03792784-03602022-10-01551(189)3144https://doi.org/10.46909/alse-551044POTENTIAL VALORISATION OF PROTOBIND 1000 AS ADSORBENT FOR Pb 2+ AND Zn 2+Alina Elena TROFIN0Elena UNGUREANU1Lucia Carmen TRINCĂ2Maria Emiliana FORTUNĂ3Diana Beatrice EPERJESSY4 "Ion Ionescu de la Brad" University of Life Sciences, Faculty of Horticulture, Department of Exact Sciences, 3, Mihail Sadoveanu Alley, 700490, Iasi, Romania "Ion Ionescu de la Brad" University of Life Sciences, Faculty of Horticulture, Department of Exact Sciences, 3, Mihail Sadoveanu Alley, 700490, Iasi, Romania "Ion Ionescu de la Brad" University of Life Sciences, Faculty of Horticulture, Department of Exact Sciences, 3, Mihail Sadoveanu Alley, 700490, Iasi, Romania"Petru Poni" Institute of Macromolecular Chemistry, 41A, Grigore Ghica Voda Al., 700487, Iasi, Romania"Saint Mary" Emergency Children Hospital, 62, Vasile Lupu Str., 700309, Iasi, RomaniaThe adsorption of metal ions from increasing concentrations in aqueous solutions by modified straw lignin Protobind 1000 was studied. The effect of metallic ion concentrations (from 20.72 to 207.2 mg·L-1 for Pb2+ and from 6.538 to 65.38 mg·L-1 for Zn2+) and contact time (30, 60 and 90 minutes) were studied at pH = 6 and 200C. Langmuir and Freundlich isotherm equations were applied to assess equilibrium data and the kinetics of the adsorption processes were analysed using Lagergren pseudo first order and Ho&McKay pseudo second order models. The results show that the adsorption processes reached equilibrium after 90 minutes, but similar values were registered after 60 minutes. The Freundlich isotherm described the process better, denoting chemisorption with the formation of ion-lignin complex structures. The Ho&McKay model fit the adsorption data better with regression coefficients equal to 1 compared to the Lagergren model, where the regression factors varied between 0.72 and 0.95. For the maximum concentration of lead solution and the longest adsorption time of 90 minutes, the Ho&McKay model predicted an equilibrium capacity qe of 13.1406 mg·g-1 compared to the 13.1398 mg·g-1 obtained. For zinc adsorption, the same maximum concentration and time were considered, and the pseudo-second order model predicted a qe of 12.6743 mg·g-1 compared to the obtained value of 12.6714 mg·g-1. The uptake of lead was greater on 0.15 g of adsorbent (a maximum of 27.23 mg·g-1) than the zinc uptake (a maximum of 8.28 mg·g-1), for all analysed concentrations.https://jurnalalse.com/wp-content/uploads/ALSE1-22-04.pdfadsorptionprotobind 1000 (pb 1000)leadzinc |
| spellingShingle | Alina Elena TROFIN Elena UNGUREANU Lucia Carmen TRINCĂ Maria Emiliana FORTUNĂ Diana Beatrice EPERJESSY POTENTIAL VALORISATION OF PROTOBIND 1000 AS ADSORBENT FOR Pb 2+ AND Zn 2+ Journal of Applied Life Sciences and Environment adsorption protobind 1000 (pb 1000) lead zinc |
| title | POTENTIAL VALORISATION OF PROTOBIND 1000 AS ADSORBENT FOR Pb 2+ AND Zn 2+ |
| title_full | POTENTIAL VALORISATION OF PROTOBIND 1000 AS ADSORBENT FOR Pb 2+ AND Zn 2+ |
| title_fullStr | POTENTIAL VALORISATION OF PROTOBIND 1000 AS ADSORBENT FOR Pb 2+ AND Zn 2+ |
| title_full_unstemmed | POTENTIAL VALORISATION OF PROTOBIND 1000 AS ADSORBENT FOR Pb 2+ AND Zn 2+ |
| title_short | POTENTIAL VALORISATION OF PROTOBIND 1000 AS ADSORBENT FOR Pb 2+ AND Zn 2+ |
| title_sort | potential valorisation of protobind 1000 as adsorbent for pb 2 and zn 2 |
| topic | adsorption protobind 1000 (pb 1000) lead zinc |
| url | https://jurnalalse.com/wp-content/uploads/ALSE1-22-04.pdf |
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