Physicochemical Properties and Application of Silica-Doped Biochar Composites as Efficient Sorbents of Copper from Tap Water
This article concerns research on new sorption materials based on silica-doped activated carbon. A two-stage synthesis involved pyrolysis of plant material impregnated in a water glass solution, followed by hydrothermal activation of the pyrolysate in KOH solution. The resulting composite can be use...
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MDPI AG
2023-03-01
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| Online Access: | https://www.mdpi.com/1996-1944/16/7/2794 |
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| author | Sebastian Drużyński Krzysztof Mazurek Urszula Kiełkowska Adriana Wróbel-Kaszanek Bartłomiej Igliński |
| author_facet | Sebastian Drużyński Krzysztof Mazurek Urszula Kiełkowska Adriana Wróbel-Kaszanek Bartłomiej Igliński |
| author_sort | Sebastian Drużyński |
| collection | DOAJ |
| description | This article concerns research on new sorption materials based on silica-doped activated carbon. A two-stage synthesis involved pyrolysis of plant material impregnated in a water glass solution, followed by hydrothermal activation of the pyrolysate in KOH solution. The resulting composite can be used as a sorbent in drinking water filters. The proposed method of synthesis enables the design of materials with a surface area of approximately 150 m<sup>2</sup>·g<sup>−1</sup>, whose chemical composition and structure were confirmed by scanning electron microscopy/energy dispersive spectroscopy (SEM/EDS), X-ray diffraction (XRD), thermogravimetry/differential thermal analysis (TG/DTA) and Fourier-transform infrared spectroscopy (FTIR). The sorption properties of the obtained materials were determined relative to copper ions using the batch experiment method. The optimal operating parameters of the obtained materials relative to copper ions are T = 313.15 K, pH = 5, S:L ratio = 4 g·dm<sup>−3</sup> and t = 120 min. The research shows that the sorption kinetics of copper ions can be described by a pseudo-second-order model. The plotted copper(II) sorption isotherm clearly indicates the Langmuir model. Under optimal conditions, the maximum sorption of copper ions was 37.74 mg·g<sup>−1</sup>, which is a satisfactory result and confirms the possibility of using the obtained material in drinking water filters. |
| first_indexed | 2024-03-11T05:31:43Z |
| format | Article |
| id | doaj.art-54dc080c11134025852fd4de0525d3be |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-11T05:31:43Z |
| publishDate | 2023-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-54dc080c11134025852fd4de0525d3be2023-11-17T17:05:13ZengMDPI AGMaterials1996-19442023-03-01167279410.3390/ma16072794Physicochemical Properties and Application of Silica-Doped Biochar Composites as Efficient Sorbents of Copper from Tap WaterSebastian Drużyński0Krzysztof Mazurek1Urszula Kiełkowska2Adriana Wróbel-Kaszanek3Bartłomiej Igliński4Department of Chemical Technology, Faculty of Chemistry, Nicolaus Copernicus University in Toruń, 7th Gagarin Street, PL 87-100 Toruń, PolandDepartment of Chemical Technology, Faculty of Chemistry, Nicolaus Copernicus University in Toruń, 7th Gagarin Street, PL 87-100 Toruń, PolandDepartment of Chemical Technology, Faculty of Chemistry, Nicolaus Copernicus University in Toruń, 7th Gagarin Street, PL 87-100 Toruń, PolandDepartment of Chemical Technology, Faculty of Chemistry, Nicolaus Copernicus University in Toruń, 7th Gagarin Street, PL 87-100 Toruń, PolandDepartment of Chemical Technology, Faculty of Chemistry, Nicolaus Copernicus University in Toruń, 7th Gagarin Street, PL 87-100 Toruń, PolandThis article concerns research on new sorption materials based on silica-doped activated carbon. A two-stage synthesis involved pyrolysis of plant material impregnated in a water glass solution, followed by hydrothermal activation of the pyrolysate in KOH solution. The resulting composite can be used as a sorbent in drinking water filters. The proposed method of synthesis enables the design of materials with a surface area of approximately 150 m<sup>2</sup>·g<sup>−1</sup>, whose chemical composition and structure were confirmed by scanning electron microscopy/energy dispersive spectroscopy (SEM/EDS), X-ray diffraction (XRD), thermogravimetry/differential thermal analysis (TG/DTA) and Fourier-transform infrared spectroscopy (FTIR). The sorption properties of the obtained materials were determined relative to copper ions using the batch experiment method. The optimal operating parameters of the obtained materials relative to copper ions are T = 313.15 K, pH = 5, S:L ratio = 4 g·dm<sup>−3</sup> and t = 120 min. The research shows that the sorption kinetics of copper ions can be described by a pseudo-second-order model. The plotted copper(II) sorption isotherm clearly indicates the Langmuir model. Under optimal conditions, the maximum sorption of copper ions was 37.74 mg·g<sup>−1</sup>, which is a satisfactory result and confirms the possibility of using the obtained material in drinking water filters.https://www.mdpi.com/1996-1944/16/7/2794silica-doped biocharhydrothermal modificationmetal ion recoverypyrolysisdrinking water treatment |
| spellingShingle | Sebastian Drużyński Krzysztof Mazurek Urszula Kiełkowska Adriana Wróbel-Kaszanek Bartłomiej Igliński Physicochemical Properties and Application of Silica-Doped Biochar Composites as Efficient Sorbents of Copper from Tap Water Materials silica-doped biochar hydrothermal modification metal ion recovery pyrolysis drinking water treatment |
| title | Physicochemical Properties and Application of Silica-Doped Biochar Composites as Efficient Sorbents of Copper from Tap Water |
| title_full | Physicochemical Properties and Application of Silica-Doped Biochar Composites as Efficient Sorbents of Copper from Tap Water |
| title_fullStr | Physicochemical Properties and Application of Silica-Doped Biochar Composites as Efficient Sorbents of Copper from Tap Water |
| title_full_unstemmed | Physicochemical Properties and Application of Silica-Doped Biochar Composites as Efficient Sorbents of Copper from Tap Water |
| title_short | Physicochemical Properties and Application of Silica-Doped Biochar Composites as Efficient Sorbents of Copper from Tap Water |
| title_sort | physicochemical properties and application of silica doped biochar composites as efficient sorbents of copper from tap water |
| topic | silica-doped biochar hydrothermal modification metal ion recovery pyrolysis drinking water treatment |
| url | https://www.mdpi.com/1996-1944/16/7/2794 |
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