Adsorption and Desorption Characteristics of Cd(II) Ions onto the Adsorbent Derived from Algae
In this study, cyanobacterial bloom adsorbents (CBA) were prepared by H2SO4 treatment (sulfonic acid-treated CBA; CBA-S) at 90-95 °C and ZnCl2 activation at 100, 200 and 300 °C (zinc chloride-activated CBA; CBA-Z-100, 200 and 300). Then, practicality and reusability of CBA were examined by researchi...
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Taylor & Francis Group
2024-12-01
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| Series: | Journal of Chemical Engineering of Japan |
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| Online Access: | https://www.tandfonline.com/doi/10.1080/00219592.2024.2385776 |
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| author | Shunsuke Aizawa Ryusei Machida Yoshimasa Amano Motoi Machida |
| author_facet | Shunsuke Aizawa Ryusei Machida Yoshimasa Amano Motoi Machida |
| author_sort | Shunsuke Aizawa |
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| description | In this study, cyanobacterial bloom adsorbents (CBA) were prepared by H2SO4 treatment (sulfonic acid-treated CBA; CBA-S) at 90-95 °C and ZnCl2 activation at 100, 200 and 300 °C (zinc chloride-activated CBA; CBA-Z-100, 200 and 300). Then, practicality and reusability of CBA were examined by researching the adsorption/desorption performance of Cd(II) in batch and column methods. In batch method, the amount of 1st adsorption in CBA-S was highest (0.95 mmol/g) and more than twice CBA-Z series. The amounts of 2nd to 4th adsorption in CBA-S were higher than other three samples. The desorption rates were higher than 90% in 2nd to 4th adsorption. Adsorption capacity (Qm) and affinity (Ke) of CBA-S were 1.98 mmol/g and 8.74 L/mmol in Langmuir equation, respectively. CBA-S has many adsorption sites for Cd(II), and its adsorption power is weak. In column method, the adsorption of CBA-S was 0.705 mmol/g when the initial concentration of Cd(II) was 500 mg/L. After desorption, the amounts of 2nd and 3rd adsorption were 0.708 (100%) and 0.655 (93%) mmol/g, respectively. These results indicate that CBA-S had high adsorption performance and could be used repeatedly as clarified by batch and column experiments. |
| format | Article |
| id | doaj-art-60baabe0dbb2405f907171b72c47f4ad |
| institution | Kabale University |
| issn | 0021-9592 1881-1299 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Taylor & Francis Group |
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| series | Journal of Chemical Engineering of Japan |
| spelling | doaj-art-60baabe0dbb2405f907171b72c47f4ad2024-12-19T15:13:29ZengTaylor & Francis GroupJournal of Chemical Engineering of Japan0021-95921881-12992024-12-0157110.1080/00219592.2024.2385776Adsorption and Desorption Characteristics of Cd(II) Ions onto the Adsorbent Derived from AlgaeShunsuke Aizawa0Ryusei Machida1Yoshimasa Amano2Motoi Machida3Graduate School of Science and Engineering, Chiba University, 1-33, Yayoi-cho, Inage-ku, Chiba 263-8522, JapanGraduate School of Science and Engineering, Chiba University, 1-33, Yayoi-cho, Inage-ku, Chiba 263-8522, JapanGraduate School of Engineering, Chiba University, 1-33, Yayoi-cho, Inage-ku, Chiba 263-8522, JapanGraduate School of Engineering, Chiba University, 1-33, Yayoi-cho, Inage-ku, Chiba 263-8522, JapanIn this study, cyanobacterial bloom adsorbents (CBA) were prepared by H2SO4 treatment (sulfonic acid-treated CBA; CBA-S) at 90-95 °C and ZnCl2 activation at 100, 200 and 300 °C (zinc chloride-activated CBA; CBA-Z-100, 200 and 300). Then, practicality and reusability of CBA were examined by researching the adsorption/desorption performance of Cd(II) in batch and column methods. In batch method, the amount of 1st adsorption in CBA-S was highest (0.95 mmol/g) and more than twice CBA-Z series. The amounts of 2nd to 4th adsorption in CBA-S were higher than other three samples. The desorption rates were higher than 90% in 2nd to 4th adsorption. Adsorption capacity (Qm) and affinity (Ke) of CBA-S were 1.98 mmol/g and 8.74 L/mmol in Langmuir equation, respectively. CBA-S has many adsorption sites for Cd(II), and its adsorption power is weak. In column method, the adsorption of CBA-S was 0.705 mmol/g when the initial concentration of Cd(II) was 500 mg/L. After desorption, the amounts of 2nd and 3rd adsorption were 0.708 (100%) and 0.655 (93%) mmol/g, respectively. These results indicate that CBA-S had high adsorption performance and could be used repeatedly as clarified by batch and column experiments.https://www.tandfonline.com/doi/10.1080/00219592.2024.2385776Acidic functional groupsAdsorbentAdsorption-desorption characteristicsCadmium ionCyanobacteria |
| spellingShingle | Shunsuke Aizawa Ryusei Machida Yoshimasa Amano Motoi Machida Adsorption and Desorption Characteristics of Cd(II) Ions onto the Adsorbent Derived from Algae Journal of Chemical Engineering of Japan Acidic functional groups Adsorbent Adsorption-desorption characteristics Cadmium ion Cyanobacteria |
| title | Adsorption and Desorption Characteristics of Cd(II) Ions onto the Adsorbent Derived from Algae |
| title_full | Adsorption and Desorption Characteristics of Cd(II) Ions onto the Adsorbent Derived from Algae |
| title_fullStr | Adsorption and Desorption Characteristics of Cd(II) Ions onto the Adsorbent Derived from Algae |
| title_full_unstemmed | Adsorption and Desorption Characteristics of Cd(II) Ions onto the Adsorbent Derived from Algae |
| title_short | Adsorption and Desorption Characteristics of Cd(II) Ions onto the Adsorbent Derived from Algae |
| title_sort | adsorption and desorption characteristics of cd ii ions onto the adsorbent derived from algae |
| topic | Acidic functional groups Adsorbent Adsorption-desorption characteristics Cadmium ion Cyanobacteria |
| url | https://www.tandfonline.com/doi/10.1080/00219592.2024.2385776 |
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