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Boron Removal from Water by Carbon Nanotube Loaded Biopolymer Sodium Alginate Adsorbent: Isotherm, Kinetic, Optimization Studies.

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Title: Boron Removal from Water by Carbon Nanotube Loaded Biopolymer Sodium Alginate Adsorbent: Isotherm, Kinetic, Optimization Studies.
Authors: Mod, Kubra1 (AUTHOR), Hasirci, Guler1 (AUTHOR), Hilmioglu, Nilufer1 (AUTHOR) niluferh@kocaeli.edu.tr
Source: Water, Air & Soil Pollution. Feb2026, Vol. 237 Issue 4, p1-25. 25p.
Subject Terms: *Water purification, Carbon nanotubes, Sodium alginate, Mathematical optimization, Adsorption isotherms, Rate equation model, Physisorption, Boron compounds
Abstract: With the increase in consumption rates day by day and the intensity of the processes occurring in the industry, wastewater containing many environmentally harmful substances emerges and threatens water pollution. In this study, sodium alginate-carbon nanotube adsorbent spheres were used to remove boron from aqueous solutions by adsorption. The adsorbent spheres used in the study were prepared by adding carbon nanotubes to a sodium alginate solution. Isotherm and kinetic models were studied with the available values. It was concluded that the kinetic model is Pseudo-First Order and the isotherm is the Freundlich isotherm. FTIR, TGA, SEM, and XRD results were examined for the characterization of sodium alginate-carbon nanotube spheres. The response surface method was used with different values of concentration, adsorbent amount, and samples taken at different times to investigate the effect of optimum conditions and variables on the study. In the experiments, 24.4% boron removal was achieved using sodium alginate-carbon nanotube adsorbent spheres. The highest efficiency value of 24.4% was reached at 26 h with 4 g of adsorbent, 9.66 pH value, and 1000 mg/L boron concentration. [ABSTRACT FROM AUTHOR]
Copyright of Water, Air & Soil Pollution is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Boron Removal from Water by Carbon Nanotube Loaded Biopolymer Sodium Alginate Adsorbent: Isotherm, Kinetic, Optimization Studies.
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  Data: <searchLink fieldCode="JN" term="%22Water%2C+Air+%26+Soil+Pollution%22">Water, Air & Soil Pollution</searchLink>. Feb2026, Vol. 237 Issue 4, p1-25. 25p.
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  Data: *<searchLink fieldCode="DE" term="%22Water+purification%22">Water purification</searchLink><br /><searchLink fieldCode="DE" term="%22Carbon+nanotubes%22">Carbon nanotubes</searchLink><br /><searchLink fieldCode="DE" term="%22Sodium+alginate%22">Sodium alginate</searchLink><br /><searchLink fieldCode="DE" term="%22Mathematical+optimization%22">Mathematical optimization</searchLink><br /><searchLink fieldCode="DE" term="%22Adsorption+isotherms%22">Adsorption isotherms</searchLink><br /><searchLink fieldCode="DE" term="%22Rate+equation+model%22">Rate equation model</searchLink><br /><searchLink fieldCode="DE" term="%22Physisorption%22">Physisorption</searchLink><br /><searchLink fieldCode="DE" term="%22Boron+compounds%22">Boron compounds</searchLink>
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  Data: With the increase in consumption rates day by day and the intensity of the processes occurring in the industry, wastewater containing many environmentally harmful substances emerges and threatens water pollution. In this study, sodium alginate-carbon nanotube adsorbent spheres were used to remove boron from aqueous solutions by adsorption. The adsorbent spheres used in the study were prepared by adding carbon nanotubes to a sodium alginate solution. Isotherm and kinetic models were studied with the available values. It was concluded that the kinetic model is Pseudo-First Order and the isotherm is the Freundlich isotherm. FTIR, TGA, SEM, and XRD results were examined for the characterization of sodium alginate-carbon nanotube spheres. The response surface method was used with different values of concentration, adsorbent amount, and samples taken at different times to investigate the effect of optimum conditions and variables on the study. In the experiments, 24.4% boron removal was achieved using sodium alginate-carbon nanotube adsorbent spheres. The highest efficiency value of 24.4% was reached at 26 h with 4 g of adsorbent, 9.66 pH value, and 1000 mg/L boron concentration. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Water, Air & Soil Pollution is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1007/s11270-025-08913-z
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        Text: English
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        Type: general
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      – SubjectFull: Sodium alginate
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      – TitleFull: Boron Removal from Water by Carbon Nanotube Loaded Biopolymer Sodium Alginate Adsorbent: Isotherm, Kinetic, Optimization Studies.
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              Text: Feb2026
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