Synthesis of hydroxyapatite-zeolite from blast furnace slag and its application for the removal of copper, lead and copper-lead mixture by adsorption
This article sheds light on the applications of hydroxyapatite-zeolite (HZ) from a steelmaking by-product, namely treated blast-furnace slag (TBFS), in the adsorption of copper, lead and copper-lead mixture in batch mode. Chemical and spectral analysis showed that sodium oxide, silicon dioxide, alum...
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Iranian Research Organization for Science and Technology (IROST)
2024-10-01
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| Series: | Advances in Environmental Technology |
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| Online Access: | https://aet.irost.ir/article_1464_0b33e763dc324db42a6879899aace296.pdf |
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| author | Toufik Chouchane Mohamed Tayeb Abedghars Sabiha Chouchane Atmane Boukari |
| author_facet | Toufik Chouchane Mohamed Tayeb Abedghars Sabiha Chouchane Atmane Boukari |
| author_sort | Toufik Chouchane |
| collection | DOAJ |
| description | This article sheds light on the applications of hydroxyapatite-zeolite (HZ) from a steelmaking by-product, namely treated blast-furnace slag (TBFS), in the adsorption of copper, lead and copper-lead mixture in batch mode. Chemical and spectral analysis showed that sodium oxide, silicon dioxide, aluminum oxide, calcium oxide, and phosphorus hemi-pentoxide are the main constituent elements of HZ. After conversion of TBFS to HZ, the specific surface area experienced a significant expansion from 275.8 to 409.63 m2/g, while the point of zero charge (PZC) regressed from 3.8 to 3.4 on the pH scale. The sodium oxide/alumina, lime/phosphorus pentoxide, and silica/alumina ratios, estimated at 1.71, 1.61, and 1.31, respectively, indicate that the slag was transformed into hydroxyapatite-zeolite. The tests revealed that the impact of contact time (50 min), HZ mass (1g), solution agitation (200 rpm), solution pH (5), medium temperature (20 °C), HZ particle size (250µm) and initial concentration of the pollutant solution (240 mg/L) significantly improved the efficiency of these processes, where the adsorption power of copper, lead and mixture reached 124.87 mg/g, 115.14 mg/g and 108.74 mg/g, respectively. The adsorption isotherms demonstrated that the processes in question occurred on a homogeneous surface covered with a single layer, as evidenced by the correlation coefficients and the capacities of adsorption. The kinetic models demonstrated that the sorption processes undertaken obeyed pseudo-second-order kinetics (R² ≥ 0.99). Examination of the adsorption mechanism highlighted that these processes are regulated by various external and internal diffusions. Thermodynamic evaluations confirmed that ongoing procedures are characterized by heat release (exothermic). In addition, they demonstrate their spontaneous character, which is less disordered and results from physical interactions (physical adsorption). It has been demonstrated by the desorption process that HZ can be reused for 6 successive cycles. |
| format | Article |
| id | doaj-art-4d0086d613d5496ea018047c5319e6a5 |
| institution | Kabale University |
| issn | 2476-6674 2476-4779 |
| language | English |
| publishDate | 2024-10-01 |
| publisher | Iranian Research Organization for Science and Technology (IROST) |
| record_format | Article |
| series | Advances in Environmental Technology |
| spelling | doaj-art-4d0086d613d5496ea018047c5319e6a52024-12-28T07:25:46ZengIranian Research Organization for Science and Technology (IROST)Advances in Environmental Technology2476-66742476-47792024-10-0110433935910.22104/aet.2024.14641464Synthesis of hydroxyapatite-zeolite from blast furnace slag and its application for the removal of copper, lead and copper-lead mixture by adsorptionToufik Chouchane0Mohamed Tayeb Abedghars1Sabiha Chouchane2Atmane Boukari3Research Center in Industrial Technologies CRTI, P.O. Box 64, Cheraga 16014 Algiers AlgeriaResearch Center in Industrial Technologies CRTI, P.O. Box 64, Cheraga 16014 Algiers AlgeriaFaculty of Sciences, Badji Mokhtar University, Annaba AlgeriaResearch Center in Industrial Technologies CRTI, P.O. Box 64, Cheraga 16014 Algiers AlgeriaThis article sheds light on the applications of hydroxyapatite-zeolite (HZ) from a steelmaking by-product, namely treated blast-furnace slag (TBFS), in the adsorption of copper, lead and copper-lead mixture in batch mode. Chemical and spectral analysis showed that sodium oxide, silicon dioxide, aluminum oxide, calcium oxide, and phosphorus hemi-pentoxide are the main constituent elements of HZ. After conversion of TBFS to HZ, the specific surface area experienced a significant expansion from 275.8 to 409.63 m2/g, while the point of zero charge (PZC) regressed from 3.8 to 3.4 on the pH scale. The sodium oxide/alumina, lime/phosphorus pentoxide, and silica/alumina ratios, estimated at 1.71, 1.61, and 1.31, respectively, indicate that the slag was transformed into hydroxyapatite-zeolite. The tests revealed that the impact of contact time (50 min), HZ mass (1g), solution agitation (200 rpm), solution pH (5), medium temperature (20 °C), HZ particle size (250µm) and initial concentration of the pollutant solution (240 mg/L) significantly improved the efficiency of these processes, where the adsorption power of copper, lead and mixture reached 124.87 mg/g, 115.14 mg/g and 108.74 mg/g, respectively. The adsorption isotherms demonstrated that the processes in question occurred on a homogeneous surface covered with a single layer, as evidenced by the correlation coefficients and the capacities of adsorption. The kinetic models demonstrated that the sorption processes undertaken obeyed pseudo-second-order kinetics (R² ≥ 0.99). Examination of the adsorption mechanism highlighted that these processes are regulated by various external and internal diffusions. Thermodynamic evaluations confirmed that ongoing procedures are characterized by heat release (exothermic). In addition, they demonstrate their spontaneous character, which is less disordered and results from physical interactions (physical adsorption). It has been demonstrated by the desorption process that HZ can be reused for 6 successive cycles.https://aet.irost.ir/article_1464_0b33e763dc324db42a6879899aace296.pdfadsorptioncopperleadslagzeolite |
| spellingShingle | Toufik Chouchane Mohamed Tayeb Abedghars Sabiha Chouchane Atmane Boukari Synthesis of hydroxyapatite-zeolite from blast furnace slag and its application for the removal of copper, lead and copper-lead mixture by adsorption Advances in Environmental Technology adsorption copper lead slag zeolite |
| title | Synthesis of hydroxyapatite-zeolite from blast furnace slag and its application for the removal of copper, lead and copper-lead mixture by adsorption |
| title_full | Synthesis of hydroxyapatite-zeolite from blast furnace slag and its application for the removal of copper, lead and copper-lead mixture by adsorption |
| title_fullStr | Synthesis of hydroxyapatite-zeolite from blast furnace slag and its application for the removal of copper, lead and copper-lead mixture by adsorption |
| title_full_unstemmed | Synthesis of hydroxyapatite-zeolite from blast furnace slag and its application for the removal of copper, lead and copper-lead mixture by adsorption |
| title_short | Synthesis of hydroxyapatite-zeolite from blast furnace slag and its application for the removal of copper, lead and copper-lead mixture by adsorption |
| title_sort | synthesis of hydroxyapatite zeolite from blast furnace slag and its application for the removal of copper lead and copper lead mixture by adsorption |
| topic | adsorption copper lead slag zeolite |
| url | https://aet.irost.ir/article_1464_0b33e763dc324db42a6879899aace296.pdf |
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