The potential of duck egg white as a modifier for activated rice straw to enhance Cr(VI) ions adsorption in an aqueous solution
In this study, activated rice straw modified with duck egg white (RSA-DEW) was tested extensively to increase the adsorption capacity of Cr(VI) ions. The parametric study was carried out in a batch system, and the results showed that the maximum adsorption capacity of Cr(VI) ions using RSA-DEW was 9...
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| Format: | Article |
| Language: | English |
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Elsevier
2024-04-01
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| Series: | South African Journal of Chemical Engineering |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1026918524000192 |
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| author | Adewirli Putra Syiffa Fauzia Deswati Deswati Syukri Arief Rahmiana Zein |
| author_facet | Adewirli Putra Syiffa Fauzia Deswati Deswati Syukri Arief Rahmiana Zein |
| author_sort | Adewirli Putra |
| collection | DOAJ |
| description | In this study, activated rice straw modified with duck egg white (RSA-DEW) was tested extensively to increase the adsorption capacity of Cr(VI) ions. The parametric study was carried out in a batch system, and the results showed that the maximum adsorption capacity of Cr(VI) ions using RSA-DEW was 94.904 mg g−1, far greater than using RSA of 60.204 mg g−1, in studies that have been reported. This optimum condition was achieved at pH 2, initial concentration of Cr(VI) 1000 mg L−1, contact time 30 min, particle size ≤ 36 µm, and stirring speed 100 rpm at 298 K. The principle of equilibrium follows the Freundlich isotherm model, which shows a multilayer adsorption process. Meanwhile, the adsorption kinetics follows a pseudo-second-order model, which indicates a chemical interaction between the adsorbent and the adsorbate. The thermodynamic evaluation showed that the adsorption of Cr(VI) ions onto RSA-DEW was exothermic and spontaneous. Prediction Adsorption mechanisms include pore filling, electrostatic interactions, reduction, ion exchange, and complexing. After five adsorption-desorption cycles were carried out to evaluate the reusability of the adsorbent, the efficiency of RSA-DEW did not change significantly, indicating good reusability. The application of RSA-DEW succeeded in removing Cr(VI) ions from river water contaminated with Cr(VI) ions, with a removal efficiency of up to 100 %. In conclusion, the novelty of this study presents the selection of Duck Egg White (DEW) as a new effective, low cost and advantageous modifier for removing Cr(VI) ions in solution. |
| first_indexed | 2024-03-08T00:23:48Z |
| format | Article |
| id | doaj.art-5a55107e87e94a4b8aa35ea0a4a3c2db |
| institution | Directory Open Access Journal |
| issn | 1026-9185 |
| language | English |
| last_indexed | 2025-03-22T06:23:39Z |
| publishDate | 2024-04-01 |
| publisher | Elsevier |
| record_format | Article |
| series | South African Journal of Chemical Engineering |
| spelling | doaj.art-5a55107e87e94a4b8aa35ea0a4a3c2db2024-04-26T04:58:38ZengElsevierSouth African Journal of Chemical Engineering1026-91852024-04-0148204213The potential of duck egg white as a modifier for activated rice straw to enhance Cr(VI) ions adsorption in an aqueous solutionAdewirli Putra0Syiffa Fauzia1Deswati Deswati2Syukri Arief3Rahmiana Zein4Department of Chemistry, Andalas University, Padang, West Sumatera 25163, Indonesia; Department of Medical Laboratory Technology, Syedza Saintika College of Health Sciences, Padang, West Sumatera 25132, IndonesiaResearch Center for Chemistry, National Research and Innovation Agency, Jakarta 10340 IndonesiaDepartment of Chemistry, Andalas University, Padang, West Sumatera 25163, IndonesiaDepartment of Chemistry, Andalas University, Padang, West Sumatera 25163, IndonesiaDepartment of Chemistry, Andalas University, Padang, West Sumatera 25163, Indonesia; Corresponding author.In this study, activated rice straw modified with duck egg white (RSA-DEW) was tested extensively to increase the adsorption capacity of Cr(VI) ions. The parametric study was carried out in a batch system, and the results showed that the maximum adsorption capacity of Cr(VI) ions using RSA-DEW was 94.904 mg g−1, far greater than using RSA of 60.204 mg g−1, in studies that have been reported. This optimum condition was achieved at pH 2, initial concentration of Cr(VI) 1000 mg L−1, contact time 30 min, particle size ≤ 36 µm, and stirring speed 100 rpm at 298 K. The principle of equilibrium follows the Freundlich isotherm model, which shows a multilayer adsorption process. Meanwhile, the adsorption kinetics follows a pseudo-second-order model, which indicates a chemical interaction between the adsorbent and the adsorbate. The thermodynamic evaluation showed that the adsorption of Cr(VI) ions onto RSA-DEW was exothermic and spontaneous. Prediction Adsorption mechanisms include pore filling, electrostatic interactions, reduction, ion exchange, and complexing. After five adsorption-desorption cycles were carried out to evaluate the reusability of the adsorbent, the efficiency of RSA-DEW did not change significantly, indicating good reusability. The application of RSA-DEW succeeded in removing Cr(VI) ions from river water contaminated with Cr(VI) ions, with a removal efficiency of up to 100 %. In conclusion, the novelty of this study presents the selection of Duck Egg White (DEW) as a new effective, low cost and advantageous modifier for removing Cr(VI) ions in solution.http://www.sciencedirect.com/science/article/pii/S1026918524000192AdsorptionCr(VI)Duck egg whiteIsothermModifierRice straw |
| spellingShingle | Adewirli Putra Syiffa Fauzia Deswati Deswati Syukri Arief Rahmiana Zein The potential of duck egg white as a modifier for activated rice straw to enhance Cr(VI) ions adsorption in an aqueous solution South African Journal of Chemical Engineering Adsorption Cr(VI) Duck egg white Isotherm Modifier Rice straw |
| title | The potential of duck egg white as a modifier for activated rice straw to enhance Cr(VI) ions adsorption in an aqueous solution |
| title_full | The potential of duck egg white as a modifier for activated rice straw to enhance Cr(VI) ions adsorption in an aqueous solution |
| title_fullStr | The potential of duck egg white as a modifier for activated rice straw to enhance Cr(VI) ions adsorption in an aqueous solution |
| title_full_unstemmed | The potential of duck egg white as a modifier for activated rice straw to enhance Cr(VI) ions adsorption in an aqueous solution |
| title_short | The potential of duck egg white as a modifier for activated rice straw to enhance Cr(VI) ions adsorption in an aqueous solution |
| title_sort | potential of duck egg white as a modifier for activated rice straw to enhance cr vi ions adsorption in an aqueous solution |
| topic | Adsorption Cr(VI) Duck egg white Isotherm Modifier Rice straw |
| url | http://www.sciencedirect.com/science/article/pii/S1026918524000192 |
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