A Carbonized Zeolite/Chitosan Composite as an Adsorbent for Copper (II) and Chromium (VI) Removal from Water
To address Cu(II) and Cr(VI) water pollution, a carbonized zeolite/chitosan (C-ZLCH) composite adsorbent was produced via pyrolysis at 500 °C for two hours. C-ZLCH was characterized using scanning electron microscopy (SEM), energy-dispersive spectroscopy (EDS), Fourier transform infrared spectroscop...
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MDPI AG
2023-03-01
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| Online Access: | https://www.mdpi.com/1996-1944/16/6/2532 |
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| author | Endar Hidayat Tomoyuki Yoshino Seiichiro Yonemura Yoshiharu Mitoma Hiroyuki Harada |
| author_facet | Endar Hidayat Tomoyuki Yoshino Seiichiro Yonemura Yoshiharu Mitoma Hiroyuki Harada |
| author_sort | Endar Hidayat |
| collection | DOAJ |
| description | To address Cu(II) and Cr(VI) water pollution, a carbonized zeolite/chitosan (C-ZLCH) composite adsorbent was produced via pyrolysis at 500 °C for two hours. C-ZLCH was characterized using scanning electron microscopy (SEM), energy-dispersive spectroscopy (EDS), Fourier transform infrared spectroscopy (FTIR), dynamic light scattering (DLS), and zeta potential measurements. The batch experiments were performed by varying the initial pH, concentration, and contact time. The optimal pH values for Cu(II) and Cr(VI) were 8.1 and 9.6, respectively. The highest adsorption capacities for Cu(II) and Cr(VI) were 111.35 mg/g at 60 min and 104.75 mg/g at 90 min, respectively. The effects of chemicals such as sodium (Na<sup>+</sup>), glucose, ammonium (NH<sub>4</sub><sup>+</sup>), and acid red 88 (AR88) were also studied. Statistical analysis showed that sodium had no significant effect on Cu(II) removal, in contrast to Cr(VI) removal. However, there was a significant effect of the presence of glucose, ammonium, and AR88 on both Cu(II) and Cr(VI) removal. The adsorption isotherm and kinetic models were fitted using Langmuir and pseudo-second-order models for Cu(II) and Cr(VI), respectively. |
| first_indexed | 2024-03-11T06:14:17Z |
| format | Article |
| id | doaj.art-95f52423c3a04640a92313a59d7b63be |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-11T06:14:17Z |
| publishDate | 2023-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-95f52423c3a04640a92313a59d7b63be2023-11-17T12:23:36ZengMDPI AGMaterials1996-19442023-03-01166253210.3390/ma16062532A Carbonized Zeolite/Chitosan Composite as an Adsorbent for Copper (II) and Chromium (VI) Removal from WaterEndar Hidayat0Tomoyuki Yoshino1Seiichiro Yonemura2Yoshiharu Mitoma3Hiroyuki Harada4Graduate School of Comprehensive and Scientific Research, Prefectural University of Hiroshima, Shobara 727-0023, JapanGraduate School of Comprehensive and Scientific Research, Prefectural University of Hiroshima, Shobara 727-0023, JapanGraduate School of Comprehensive and Scientific Research, Prefectural University of Hiroshima, Shobara 727-0023, JapanGraduate School of Comprehensive and Scientific Research, Prefectural University of Hiroshima, Shobara 727-0023, JapanGraduate School of Comprehensive and Scientific Research, Prefectural University of Hiroshima, Shobara 727-0023, JapanTo address Cu(II) and Cr(VI) water pollution, a carbonized zeolite/chitosan (C-ZLCH) composite adsorbent was produced via pyrolysis at 500 °C for two hours. C-ZLCH was characterized using scanning electron microscopy (SEM), energy-dispersive spectroscopy (EDS), Fourier transform infrared spectroscopy (FTIR), dynamic light scattering (DLS), and zeta potential measurements. The batch experiments were performed by varying the initial pH, concentration, and contact time. The optimal pH values for Cu(II) and Cr(VI) were 8.1 and 9.6, respectively. The highest adsorption capacities for Cu(II) and Cr(VI) were 111.35 mg/g at 60 min and 104.75 mg/g at 90 min, respectively. The effects of chemicals such as sodium (Na<sup>+</sup>), glucose, ammonium (NH<sub>4</sub><sup>+</sup>), and acid red 88 (AR88) were also studied. Statistical analysis showed that sodium had no significant effect on Cu(II) removal, in contrast to Cr(VI) removal. However, there was a significant effect of the presence of glucose, ammonium, and AR88 on both Cu(II) and Cr(VI) removal. The adsorption isotherm and kinetic models were fitted using Langmuir and pseudo-second-order models for Cu(II) and Cr(VI), respectively.https://www.mdpi.com/1996-1944/16/6/2532adsorptionchitosanCu(II) removalCr(VI) removalisotherm studieskinetic studies |
| spellingShingle | Endar Hidayat Tomoyuki Yoshino Seiichiro Yonemura Yoshiharu Mitoma Hiroyuki Harada A Carbonized Zeolite/Chitosan Composite as an Adsorbent for Copper (II) and Chromium (VI) Removal from Water Materials adsorption chitosan Cu(II) removal Cr(VI) removal isotherm studies kinetic studies |
| title | A Carbonized Zeolite/Chitosan Composite as an Adsorbent for Copper (II) and Chromium (VI) Removal from Water |
| title_full | A Carbonized Zeolite/Chitosan Composite as an Adsorbent for Copper (II) and Chromium (VI) Removal from Water |
| title_fullStr | A Carbonized Zeolite/Chitosan Composite as an Adsorbent for Copper (II) and Chromium (VI) Removal from Water |
| title_full_unstemmed | A Carbonized Zeolite/Chitosan Composite as an Adsorbent for Copper (II) and Chromium (VI) Removal from Water |
| title_short | A Carbonized Zeolite/Chitosan Composite as an Adsorbent for Copper (II) and Chromium (VI) Removal from Water |
| title_sort | carbonized zeolite chitosan composite as an adsorbent for copper ii and chromium vi removal from water |
| topic | adsorption chitosan Cu(II) removal Cr(VI) removal isotherm studies kinetic studies |
| url | https://www.mdpi.com/1996-1944/16/6/2532 |
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