水中6:2氯代多氟烷基醚磺酸的催化水热降解研究
PDF下载 (185)邴孝慧,张德哲,张 莹,潘晨雨,丁馨怡,于 洁*.水中6:2氯代多氟烷基醚磺酸的催化水热降解研究[J].宁波大学学报(理工版),2025,38(3):72-78.DOI:10.20098/j.cnki.1001-5132.2024.1004
BING Xiaohui,ZHANG Dezhe,ZHANG Ying,PAN Chenyu,DING Xinyi,YU Jie.Catalytic hydrothermal degradation of 6:2 chlorinated polyfluoroalkyl ether sulfonic acid (6:2 Cl-PFESA) in water[J].Journal of Ningbo University(Natural Science & Engineering Edition),2025,38(3):72-78.DOI:10.20098/j.cnki.1001-5132.2024.1004
| Title: | Catalytic hydrothermal degradation of 6:2 chlorinated polyfluoroalkyl ether sulfonic acid (6:2 Cl-PFESA) in water |
| 作者: | 邴孝慧, 张德哲, 张 莹, 潘晨雨, 丁馨怡, 于 洁* |
| Author(s): | BING Xiaohui, ZHANG Dezhe, ZHANG Ying, PAN Chenyu, DING Xinyi, YU Jie |
| 关键词: | 6:2氯代多氟烷基醚磺酸; 水热液化; 催化剂; 降解; 脱氟 |
| Keywords: | 6:2 chloropolyfluoroalkyl ether sulfonic acid; hydrothermal; catalyst; degradation; defluorination |
| 分类号: | X703 |
| DOI: | 10.20098/j.cnki.1001-5132.2024.1004 |
| 文献标识码: | A |
| 摘要: | 为有效解决传统全氟辛烷磺酸盐(PFOS)替代品6:2氯代多氟烷基醚磺酸(6:2 Cl-PFESA)的巨大潜在威胁, 利用在污染物处理方面发展前景广阔的水热液化技术对其进行降解, 通过催化剂筛选、反应pH值和温度条件的选择, 对水热液化降解6:2 Cl-PFESA反应体系进行优化。选择了10种催化剂考察6:2 Cl-PFESA的水热液化降解和脱氟效果, 从中优选出氧化铜(CuO)、零价铁(Fe)、羟基氧化铁(FeOOH), 并考察了不同pH值和温度对6:2 Cl-PFESA降解和脱氟效果的影响。结果显示, 在350℃、pH=11时, 各类催化剂对6:2 Cl-PFESA的降解和脱氟效果同时达到最好。此外, 还通过中间体测定推导出6:2 Cl-PFESA降解路径。最终结果将为水中6:2氯代多氟烷基醚磺酸的水热液化降解提供技术支撑和理论基础。 |
| Abstract: | As an alternative to traditional perfluorooctane sulfonate (PFOS), 6:2 chlorinated polyfluoroalkyl ether sulfonate (6:2 Cl-PFESA) also presents serious risks to human health and environment. One promising method of treating pollutants is hydrothermal liquefaction that can break down some fluoride in water. In order to accomplish the objective of efficient degradation and defluoridation of 6:2 Cl-PFESA, it is necessary to investigate efficient catalysts for hydrothermal liquefaction and optimize the reaction conditions. In order to examine the removal and defluorination effect of 6:2 Cl-PFESA, ten catalysts were chosen for the hydrothermal liquefaction of this compound, with which copper oxide (CuO), zero-valent iron (Fe), and hydroxyl iron oxide (FeOOH) were identified with optimization. The impact of pH and temperature on the elimination and defluorination of 6:2 Cl-PFESA was also examined. The optimal conditions for the simultaneous breakdown and defluorination of 6:2 Cl-PFESA by all catalyst types were eventually obtained as being 350℃ and pH=11. Additionally, an intermediate determination was used to infer the breakdown process of 6:2 Cl-PFESA |
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| 备注/Memo: | 收稿日期: 2024−10−17 宁波大学学报（理工版）网址: http://journallg.nbu.edu.cn/ 基金项目: 国家自然科学基金（51978343）; 国家级大学生创新创业训练计划项目（202411646047） 第一作者: 邴孝慧, 硕士研究生, 主要研究方向: 市政污泥处理与资源化。E-mail: 2826429232@qq.com *通信作者: 于 洁, 博士/教授, 主要研究方向: 固体废物处理与资源化。E-mail: yujie@nbu.edu.cn 宁波大学学报（理工版）网址：http://journallg.nbu.edu.cn/ |
