| 李浩天,刘旺,付茂,王栋,董应超.MOF-808@PAN吸附剂去除水中抗生素性能研究[J].,2022,62(2):149-157 |
| MOF-808@PAN吸附剂去除水中抗生素性能研究 |
| Performance study of MOF-808@PAN adsorbent removing antibiotics from water |
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| DOI：10.7511/dllgxb202202006 |
| 中文关键词:水污染抗生素吸附分离金属有机框架(MOF)MOF-808 |
| 英文关键词:water pollutionantibioticsadsorption separationmetal-organic framework (MOF)MOF-808 |
| 基金项目:国家自然科学基金资助项目(5207003321876020)；国家重点研发专项(2019YFA0705803). |
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| 摘要点击次数:161 |
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| 中文摘要: |
| 吸附法被广泛认为是一种高效去除水中抗生素的技术．但是，传统的吸附材料存在吸附容量低、回收困难等问题．选择MOF-808材料作为吸附主体，聚丙烯腈(PAN)作为载体，采用相转化法制备了MOF-808@PAN吸附剂．四环素溶液的静态吸附实验结果表明，当MOF-808和PAN质量比优化为2.5∶1时，吸附剂对四环素的吸附效率超过90%，并具有112.2 mg/g的最大吸附容量．该吸附过程符合Langmuir等温吸附模型、准二级动力学模型以及颗粒内扩散模型．此外，该吸附剂在宽泛的pH范围以及高浓度的四环素溶液中均表现良好．首次将MOF-808材料用于水中抗生素的吸附去除，可为其他粉末吸附材料的工程化应用提供参考． |
| 英文摘要: |
| The adsorption method has been widely considered as an efficient technology for removing antibiotics from water. However, the traditional adsorbents have insufficient adsorption capacity and difficult recovery. The MOF-808@PAN adsorbent is prepared using phase inversion method with MOF-808 and polyacrylonitrile (PAN) as adsorption sites and support, respectively. For the static adsorption experiment of tetracycline solution, the MOF-808@PAN adsorbent with optimized mass ratio (m(MOF-808)/m(PAN)=2.5∶1) shows maximum adsorption capacity of 112.2 mg/g and over 90% of adsorption efficiency. This adsorption process fits well with Langmuir adsorption isotherm model, pseudo-second order kinetic model and intra-particle diffusion model. Furthermore, this adsorbent exhibits good performance in wide pH range and high concentration of tetracycline solution. MOF-808 is utilized to adsorb antibiotics from water for the first time, which can provide reference for the engineering application of other powder adsorbents. |
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