An insight to the filtration mechanism of Pb(II) at the surface of a clay ceramic membrane through its preconcentration at the surface of a graphite/clay composite working electrode
The use of cyclic voltammetry (CV) and linear scan anodic stripping voltammetry (LSASV) to predict the selectivity of microfiltration ceramic membranes made from a lump of local clay towards Pb(II) ions filtration is described. The membranes were characterized by different techniques followed by CV...
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| Format: | Article |
| Language: | English |
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Elsevier
2022-12-01
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| Series: | Arabian Journal of Chemistry |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1878535222006190 |
| _version_ | 1811304776113061888 |
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| author | Lubna Jaber Abdelaziz Elgamouz Abdel-Nasser Kawde |
| author_facet | Lubna Jaber Abdelaziz Elgamouz Abdel-Nasser Kawde |
| author_sort | Lubna Jaber |
| collection | DOAJ |
| description | The use of cyclic voltammetry (CV) and linear scan anodic stripping voltammetry (LSASV) to predict the selectivity of microfiltration ceramic membranes made from a lump of local clay towards Pb(II) ions filtration is described. The membranes were characterized by different techniques followed by CV analysis of the Fe(CN)63-/Fe(CN)64- redox couple and Pb(II) on bare graphite, raw clay, and clay-modified carbon paste electrode (clay-modified CPE). The effect of clay loading in the range of 1–10 % (w/w) on the electrodes is studied, where an enhanced peak current is observed for 5 % w/w clay. Moreover, a decrease in the peak current can be seen for bare graphite electrodes, suggesting that the clay mineral had played a substantial role in the sieving of heavy metal ions through the ceramic membrane. The electroactive surface area of 5% w/w raw clay towards Fe(II) ions was found to be in the order of 3.07 × 10-2 cm2 and higher than 5% w/w clay sintered to 1000 °C and bare graphite. CV analysis shows that both, 5 % w/w raw clay and 5 % w/w clay sintered to 1000 °C exhibited high peak currents towards Pb(II) ions. The mobility of the Pb(II) ions is found to increase when 5% w/w clay sintered to 1000 °C is utilized as membrane/electrode, leading to an increase in the amount of reduced Pb(II) ions on the surfaces of the clay membranes/electrodes. The study suggests successful filtration of Pb(II) ions through the proposed membrane/electrode and a much better accumulation than Fe(II) at the surface of the membrane/electrode before being subjected to filtration. |
| first_indexed | 2024-04-13T08:13:35Z |
| format | Article |
| id | doaj.art-64e3bd0bd9e4476c986271f24d2265ed |
| institution | Directory Open Access Journal |
| issn | 1878-5352 |
| language | English |
| last_indexed | 2024-04-13T08:13:35Z |
| publishDate | 2022-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Arabian Journal of Chemistry |
| spelling | doaj.art-64e3bd0bd9e4476c986271f24d2265ed2022-12-22T02:54:53ZengElsevierArabian Journal of Chemistry1878-53522022-12-011512104303An insight to the filtration mechanism of Pb(II) at the surface of a clay ceramic membrane through its preconcentration at the surface of a graphite/clay composite working electrodeLubna Jaber0Abdelaziz Elgamouz1Abdel-Nasser Kawde2Pure and Applied Chemistry Group, Department of Chemistry, College of Sciences, University of Sharjah, P. O. Box 27272, United Arab EmiratesCorresponding authors.; Pure and Applied Chemistry Group, Department of Chemistry, College of Sciences, University of Sharjah, P. O. Box 27272, United Arab EmiratesCorresponding authors.; Pure and Applied Chemistry Group, Department of Chemistry, College of Sciences, University of Sharjah, P. O. Box 27272, United Arab EmiratesThe use of cyclic voltammetry (CV) and linear scan anodic stripping voltammetry (LSASV) to predict the selectivity of microfiltration ceramic membranes made from a lump of local clay towards Pb(II) ions filtration is described. The membranes were characterized by different techniques followed by CV analysis of the Fe(CN)63-/Fe(CN)64- redox couple and Pb(II) on bare graphite, raw clay, and clay-modified carbon paste electrode (clay-modified CPE). The effect of clay loading in the range of 1–10 % (w/w) on the electrodes is studied, where an enhanced peak current is observed for 5 % w/w clay. Moreover, a decrease in the peak current can be seen for bare graphite electrodes, suggesting that the clay mineral had played a substantial role in the sieving of heavy metal ions through the ceramic membrane. The electroactive surface area of 5% w/w raw clay towards Fe(II) ions was found to be in the order of 3.07 × 10-2 cm2 and higher than 5% w/w clay sintered to 1000 °C and bare graphite. CV analysis shows that both, 5 % w/w raw clay and 5 % w/w clay sintered to 1000 °C exhibited high peak currents towards Pb(II) ions. The mobility of the Pb(II) ions is found to increase when 5% w/w clay sintered to 1000 °C is utilized as membrane/electrode, leading to an increase in the amount of reduced Pb(II) ions on the surfaces of the clay membranes/electrodes. The study suggests successful filtration of Pb(II) ions through the proposed membrane/electrode and a much better accumulation than Fe(II) at the surface of the membrane/electrode before being subjected to filtration.http://www.sciencedirect.com/science/article/pii/S1878535222006190Clay mineralMembraneHeavy metalsCyclic voltammetryElectrochemical surface |
| spellingShingle | Lubna Jaber Abdelaziz Elgamouz Abdel-Nasser Kawde An insight to the filtration mechanism of Pb(II) at the surface of a clay ceramic membrane through its preconcentration at the surface of a graphite/clay composite working electrode Arabian Journal of Chemistry Clay mineral Membrane Heavy metals Cyclic voltammetry Electrochemical surface |
| title | An insight to the filtration mechanism of Pb(II) at the surface of a clay ceramic membrane through its preconcentration at the surface of a graphite/clay composite working electrode |
| title_full | An insight to the filtration mechanism of Pb(II) at the surface of a clay ceramic membrane through its preconcentration at the surface of a graphite/clay composite working electrode |
| title_fullStr | An insight to the filtration mechanism of Pb(II) at the surface of a clay ceramic membrane through its preconcentration at the surface of a graphite/clay composite working electrode |
| title_full_unstemmed | An insight to the filtration mechanism of Pb(II) at the surface of a clay ceramic membrane through its preconcentration at the surface of a graphite/clay composite working electrode |
| title_short | An insight to the filtration mechanism of Pb(II) at the surface of a clay ceramic membrane through its preconcentration at the surface of a graphite/clay composite working electrode |
| title_sort | insight to the filtration mechanism of pb ii at the surface of a clay ceramic membrane through its preconcentration at the surface of a graphite clay composite working electrode |
| topic | Clay mineral Membrane Heavy metals Cyclic voltammetry Electrochemical surface |
| url | http://www.sciencedirect.com/science/article/pii/S1878535222006190 |
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