Experimental study on cobalt adsorption by bone powder modified with poly Pyrrole and polyethylene glycol
Heavy metals, including cobalt, are significant pollutants in water and wastewater. This study investigates the use of bone powder and a bone powder/poly-pyrrole composite for the removal of cobalt from aqueous solutions through batch experiments. The results indicate that the highest cobalt removal...
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Elsevier
2025-03-01
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| Series: | Results in Engineering |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2590123025004621 |
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| author | Javad Yarmohammadi Jamaloi Majid Riahi Samani Davood Toghraie |
| author_facet | Javad Yarmohammadi Jamaloi Majid Riahi Samani Davood Toghraie |
| author_sort | Javad Yarmohammadi Jamaloi |
| collection | DOAJ |
| description | Heavy metals, including cobalt, are significant pollutants in water and wastewater. This study investigates the use of bone powder and a bone powder/poly-pyrrole composite for the removal of cobalt from aqueous solutions through batch experiments. The results indicate that the highest cobalt removal percentage achieved was 68.06 %, while the lowest was 59.80 %. These variations were attributed to the addition of polyethylene glycol and polyvinyl alcohol at concentrations of 3 g/L and 1 g/L, respectively, during the synthesis of the bone powder/poly-pyrrole composite. The influence of solvent type on the removal efficiency revealed that the highest removal percentage (57.07 %) was attained using butanol and water solvents in the presence of 3 g/L PEG. Increasing the initial pH of the solution enhanced the adsorption capacity, with maximum cobalt adsorption observed at pH 7. The optimal composite adsorbent demonstrated an equilibrium time of 30 mins. Additionally, the pseudo-second-order kinetic model was identified as the best fit for cobalt adsorption, based on the correlation coefficient (R²). The removal efficiency increased to 92.18 % when the adsorbent dose was raised from 2 g/L to 8 g/L, with a corresponding increase in cobalt removal. The experimental data conformed to the Langmuir isotherm model, as indicated by the adsorption isotherm results. |
| format | Article |
| id | doaj-art-34fdd7fbb22945918c418a2d56e0a553 |
| institution | DOAJ |
| issn | 2590-1230 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Engineering |
| spelling | doaj-art-34fdd7fbb22945918c418a2d56e0a5532025-08-20T02:45:18ZengElsevierResults in Engineering2590-12302025-03-012510438210.1016/j.rineng.2025.104382Experimental study on cobalt adsorption by bone powder modified with poly Pyrrole and polyethylene glycolJavad Yarmohammadi Jamaloi0Majid Riahi Samani1Davood Toghraie2Department of Civil Engineering, Khomeinishahr Branch, Islamic Azad University, Khomeinishahr, IranDepartment of Civil Engineering, Khomeinishahr Branch, Islamic Azad University, Khomeinishahr, Iran; Corresponding authors.Department of Mechanical Engineering, Khomeinishahr Branch, Islamic Azad University, Khomeinishahr, Iran; Corresponding authors.Heavy metals, including cobalt, are significant pollutants in water and wastewater. This study investigates the use of bone powder and a bone powder/poly-pyrrole composite for the removal of cobalt from aqueous solutions through batch experiments. The results indicate that the highest cobalt removal percentage achieved was 68.06 %, while the lowest was 59.80 %. These variations were attributed to the addition of polyethylene glycol and polyvinyl alcohol at concentrations of 3 g/L and 1 g/L, respectively, during the synthesis of the bone powder/poly-pyrrole composite. The influence of solvent type on the removal efficiency revealed that the highest removal percentage (57.07 %) was attained using butanol and water solvents in the presence of 3 g/L PEG. Increasing the initial pH of the solution enhanced the adsorption capacity, with maximum cobalt adsorption observed at pH 7. The optimal composite adsorbent demonstrated an equilibrium time of 30 mins. Additionally, the pseudo-second-order kinetic model was identified as the best fit for cobalt adsorption, based on the correlation coefficient (R²). The removal efficiency increased to 92.18 % when the adsorbent dose was raised from 2 g/L to 8 g/L, with a corresponding increase in cobalt removal. The experimental data conformed to the Langmuir isotherm model, as indicated by the adsorption isotherm results.http://www.sciencedirect.com/science/article/pii/S2590123025004621AdsorptionCobaltBone powderPolypyrrolePolyethylene glycol |
| spellingShingle | Javad Yarmohammadi Jamaloi Majid Riahi Samani Davood Toghraie Experimental study on cobalt adsorption by bone powder modified with poly Pyrrole and polyethylene glycol Results in Engineering Adsorption Cobalt Bone powder Polypyrrole Polyethylene glycol |
| title | Experimental study on cobalt adsorption by bone powder modified with poly Pyrrole and polyethylene glycol |
| title_full | Experimental study on cobalt adsorption by bone powder modified with poly Pyrrole and polyethylene glycol |
| title_fullStr | Experimental study on cobalt adsorption by bone powder modified with poly Pyrrole and polyethylene glycol |
| title_full_unstemmed | Experimental study on cobalt adsorption by bone powder modified with poly Pyrrole and polyethylene glycol |
| title_short | Experimental study on cobalt adsorption by bone powder modified with poly Pyrrole and polyethylene glycol |
| title_sort | experimental study on cobalt adsorption by bone powder modified with poly pyrrole and polyethylene glycol |
| topic | Adsorption Cobalt Bone powder Polypyrrole Polyethylene glycol |
| url | http://www.sciencedirect.com/science/article/pii/S2590123025004621 |
| work_keys_str_mv | AT javadyarmohammadijamaloi experimentalstudyoncobaltadsorptionbybonepowdermodifiedwithpolypyrroleandpolyethyleneglycol AT majidriahisamani experimentalstudyoncobaltadsorptionbybonepowdermodifiedwithpolypyrroleandpolyethyleneglycol AT davoodtoghraie experimentalstudyoncobaltadsorptionbybonepowdermodifiedwithpolypyrroleandpolyethyleneglycol |