Synthesis of Silica-based Dodecyl Benzenesulfonic Acid Modified DtBuCH18C6 Hybrid Adsorbent and Its Adsorption Performance towards Sr(Ⅱ)
For selective separation of 90Sr from HLLW, dodecyl benzenesulfonic acid (DBS) was applied to modified the 4′,4′(5″)-di(tert-butylcyclohexano)-18-crown-6 (DtBuCH18C6) and a novel silica-based crown ether was synthesized. The successful synthesis of adsorbent was estimated by characterization methods...
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| Format: | Article |
| Language: | English |
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Editorial Board of Atomic Energy Science and Technology
2022-11-01
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| Series: | Yuanzineng kexue jishu |
| Online Access: | https://www.aest.org.cn/CN/abstract/abstract21562.shtml |
| _version_ | 1811190711812358144 |
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| author | WANG Yiqi;MAO Cong;GUO Jianfeng;SANG Hongji;WU Yan |
| author_facet | WANG Yiqi;MAO Cong;GUO Jianfeng;SANG Hongji;WU Yan |
| author_sort | WANG Yiqi;MAO Cong;GUO Jianfeng;SANG Hongji;WU Yan |
| collection | DOAJ |
| description | For selective separation of 90Sr from HLLW, dodecyl benzenesulfonic acid (DBS) was applied to modified the 4′,4′(5″)-di(tert-butylcyclohexano)-18-crown-6 (DtBuCH18C6) and a novel silica-based crown ether was synthesized. The successful synthesis of adsorbent was estimated by characterization methods such as SEM, TG-DTA and FT-IR. The leakage of DtBuCH18C6 from the adsorbent is less than 2.03% in 7 mol/L HNO3, suggesting a good chemical stability of adsorbent. DBS worked as a counter ion to enhance the complex formation between DtBuCH18C6 and Sr(Ⅱ), enhancing the Kd value at 0.5 mol/L HNO3 to 10 times (355.02 cm3/g), and a synergistic effect with nitrate ions was found at higher HNO3 concentration. The selective adsorption of Sr(Ⅱ) is proved great, which follows the pseudo-second-order kinetic model and Langmuir model, and the maximum adsorption capacity reaches 42.13 mg/g. Using 1 mol/L HNO3 solution as eluent, 79% of the adsorbed Sr(Ⅱ) can be eluted from the adsorbent (ratio of eluent vs adsorbent is 0.9 L/g, contact time is 5 h), resulting in effective Sr(Ⅱ) recycle and reuse of adsorbent. |
| first_indexed | 2024-04-11T14:53:46Z |
| format | Article |
| id | doaj.art-3dd50347c08645778b1b6566e4238e61 |
| institution | Directory Open Access Journal |
| issn | 1000-6931 |
| language | English |
| last_indexed | 2024-04-11T14:53:46Z |
| publishDate | 2022-11-01 |
| publisher | Editorial Board of Atomic Energy Science and Technology |
| record_format | Article |
| series | Yuanzineng kexue jishu |
| spelling | doaj.art-3dd50347c08645778b1b6566e4238e612022-12-22T04:17:19ZengEditorial Board of Atomic Energy Science and TechnologyYuanzineng kexue jishu1000-69312022-11-01561120042014Synthesis of Silica-based Dodecyl Benzenesulfonic Acid Modified DtBuCH18C6 Hybrid Adsorbent and Its Adsorption Performance towards Sr(Ⅱ) WANG Yiqi;MAO Cong;GUO Jianfeng;SANG Hongji;WU Yan 0School of Nuclear Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China;404 Company Limited, China National Nuclear Corporation, Jiayuguan 732850, ChinaFor selective separation of 90Sr from HLLW, dodecyl benzenesulfonic acid (DBS) was applied to modified the 4′,4′(5″)-di(tert-butylcyclohexano)-18-crown-6 (DtBuCH18C6) and a novel silica-based crown ether was synthesized. The successful synthesis of adsorbent was estimated by characterization methods such as SEM, TG-DTA and FT-IR. The leakage of DtBuCH18C6 from the adsorbent is less than 2.03% in 7 mol/L HNO3, suggesting a good chemical stability of adsorbent. DBS worked as a counter ion to enhance the complex formation between DtBuCH18C6 and Sr(Ⅱ), enhancing the Kd value at 0.5 mol/L HNO3 to 10 times (355.02 cm3/g), and a synergistic effect with nitrate ions was found at higher HNO3 concentration. The selective adsorption of Sr(Ⅱ) is proved great, which follows the pseudo-second-order kinetic model and Langmuir model, and the maximum adsorption capacity reaches 42.13 mg/g. Using 1 mol/L HNO3 solution as eluent, 79% of the adsorbed Sr(Ⅱ) can be eluted from the adsorbent (ratio of eluent vs adsorbent is 0.9 L/g, contact time is 5 h), resulting in effective Sr(Ⅱ) recycle and reuse of adsorbent.https://www.aest.org.cn/CN/abstract/abstract21562.shtml |
| spellingShingle | WANG Yiqi;MAO Cong;GUO Jianfeng;SANG Hongji;WU Yan Synthesis of Silica-based Dodecyl Benzenesulfonic Acid Modified DtBuCH18C6 Hybrid Adsorbent and Its Adsorption Performance towards Sr(Ⅱ) Yuanzineng kexue jishu |
| title | Synthesis of Silica-based Dodecyl Benzenesulfonic Acid Modified DtBuCH18C6 Hybrid Adsorbent and Its Adsorption Performance towards Sr(Ⅱ) |
| title_full | Synthesis of Silica-based Dodecyl Benzenesulfonic Acid Modified DtBuCH18C6 Hybrid Adsorbent and Its Adsorption Performance towards Sr(Ⅱ) |
| title_fullStr | Synthesis of Silica-based Dodecyl Benzenesulfonic Acid Modified DtBuCH18C6 Hybrid Adsorbent and Its Adsorption Performance towards Sr(Ⅱ) |
| title_full_unstemmed | Synthesis of Silica-based Dodecyl Benzenesulfonic Acid Modified DtBuCH18C6 Hybrid Adsorbent and Its Adsorption Performance towards Sr(Ⅱ) |
| title_short | Synthesis of Silica-based Dodecyl Benzenesulfonic Acid Modified DtBuCH18C6 Hybrid Adsorbent and Its Adsorption Performance towards Sr(Ⅱ) |
| title_sort | synthesis of silica based dodecyl benzenesulfonic acid modified dtbuch18c6 hybrid adsorbent and its adsorption performance towards sr ii |
| url | https://www.aest.org.cn/CN/abstract/abstract21562.shtml |
| work_keys_str_mv | AT wangyiqimaocongguojianfengsanghongjiwuyan synthesisofsilicabaseddodecylbenzenesulfonicacidmodifieddtbuch18c6hybridadsorbentanditsadsorptionperformancetowardssrii |