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首页> 外文期刊>Environmental Science & Technology >Adsorption and Desorption of Oxytetracycline and Carbamazepine by Multiwalled Carbon Nanotubes
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Adsorption and Desorption of Oxytetracycline and Carbamazepine by Multiwalled Carbon Nanotubes

机译：碳纳米管对土霉素和卡马西平的吸附和解吸

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摘要

We investigated the adsorption-desorption by multiwalled carbon nanotubes (MWCNTs) of two Pharmaceuticals, oxytetracycline (OTC) and carbamazepine (CBZ). The pharma-ceuticals demonstrated relatively fast sorption kinetics on MWCNTs. All adsorption isotherms were nonlinear and fit the Polanyi-Manes model (PMM). The single point adsorption coeffieient(K) values for OTC were more than 1 order of magnitude higher than those for CBZ on corresponding MWCNTs. The adsorbed volume capacity (Q~0) and K values of PMM showed a significant relationship with surface areas and the meso-and micropore volume of MWCNTsfor both chemicals. Depending on the MWCNT outer diameter, 13.8-25.2% and 62.7-90.6% of initially adsorbed OTC and CBZ, respectively, were desorbed after 200 h. The rate of desorption of both OTC and CBZ depended upon pH and the quantity of initially adsorbed Pharmaceuticals, as well as aggregation in the case of OTC.
机译：我们研究了土霉素（OTC）和卡马西平（CBZ）这两种药物的多壁碳纳米管（MWCNT）吸附-解吸。药物制剂在MWCNT上显示出相对较快的吸附动力学。所有吸附等温线都是非线性的，并且符合Polanyi-Manes模型（PMM）。在相应的MWCNT上，OTC的单点吸附系数（K）值比CBZ的单点吸附系数高1个数量级。 PMM的吸附体积容量（Q〜0）和K值与两种化学物质的表面积以及MWCNT的介孔和微孔体积呈显着关系。取决于MWCNT的外径，200小时后分别解吸了最初吸附的OTC和CBZ的13.8-25.2％和62.7-90.6％。 OTC和CBZ的解吸速率取决于pH和最初吸附的药物数量，以及OTC的聚集情况。

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  • 来源
    《Environmental Science & Technology》 |2009年第24期|9167-9173|共7页
  • 作者

    PATRYK OLESZCZUK; BO PAN; BAOSHAN XING;

  • 作者单位

    Department of Plant, Soil and Insect Sciences, University of Massachusetts, Amherst, Massachusetts 01003 Laboratory of Soil Reclamation and Waste Management, Institute of Soil Science and Environmental Management, University of Life Sciences, 20-069 Lublin, Poland;

    Department of Plant, Soil and Insect Sciences, University of Massachusetts, Amherst, Massachusetts 01003 College of Environmental Science & Technology, Kunming University of Science & Technology, Yunnan, 650093, China;

    Department of Plant, Soil and Insect Sciences, University of Massachusetts, Amherst, Massachusetts 01003;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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