• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Polymers and the Environment >Development of Nanofibers Composed of Chitosan/Nylon 6 and Tannin/Nylon 6 for Effective Adsorption of Cr(Ⅵ)
【24h】

Development of Nanofibers Composed of Chitosan/Nylon 6 and Tannin/Nylon 6 for Effective Adsorption of Cr(Ⅵ)

机译：壳聚糖/尼龙6和单宁/尼龙6组成的纳米纤维有效吸附Cr（Ⅵ）的研究进展

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In this study, novel nanofiber materials composed of chitosanylon 6 and tanninylon 6 were synthesized by the ForcespinningA (R) method and were used as adsorbents for effective removal of chromium(VI) from aqueous solutions. The nanofibers showed similar production rates of 3.5 g h(-1). The diameters of the nanofibers ranged from 100 to 800 nm. Under the experimental conditions tested, chromium(VI) adsorption was favored at pH 3 (chitosanylon 6 nanofibers) and pH 2 (tanninylon 6 nanofibers), at a temperature of 328 K. The most suitable models for description of the kinetic data were the pseudo-second order model (chitosanylon 6 nanofibers) and the Elovich model (tanninylon 6 nanofibers). For both nanofibers, the equilibrium isotherms could be fitted by the Langmuir model. The maximum adsorption capacities were 23.9 and 62.7 mg g(-1) for the chitosanylon 6 and tanninylon 6 nanofibers, respectively. The thermodynamic parameters showed that the adsorption was spontaneous, favorable, and endothermic. The findings indicated that these nanofibers produced using a centrifugal technique offer excellent potential as adsorbents, with high adsorption capacities for chromium(VI).
机译：在这项研究中，由壳聚糖/尼龙6和单宁/尼龙6组成的新型纳米纤维材料是通过ForcespinningA（R）方法合成的，并用作有效地从水溶液中去除铬（VI）的吸附剂。纳米纤维显示出类似的3.5 g h（-1）的生产率。纳米纤维的直径为100至800nm。在测试的实验条件下，在328 K的温度下（pH 3）（壳聚糖/尼龙6纳米纤维）和pH 2（单宁/尼龙6纳米纤维）吸附铬（VI）是最有利的。数据是伪二级模型（壳聚糖/尼龙6纳米纤维）和Elovich模型（丹宁/尼龙6纳米纤维）。对于这两种纳米纤维，平衡等温线可以由Langmuir模型拟合。壳聚糖/尼龙6和单宁/尼龙6纳米纤维的最大吸附容量分别为23.9和62.7 mg g（-1）。热力学参数表明吸附是自发的，有利的和吸热的。研究结果表明，使用离心技术生产的这些纳米纤维具有出色的潜在吸附剂和对铬（VI）的高吸附能力。

著录项

  • 来源
    《Journal of Polymers and the Environment》 |2018年第10期|4073-4084|共12页
  • 作者

    Kummer G.; Schonhart C.; Fernandes M. G.; Dotto G. L.; Missio A. L.; Bertuol D. A.; Tanabe E. H.;

  • 作者单位

    Fed Univ Santa Maria UFSM, Chem Engn Dept, Environm Proc Lab LAPAM, Av Roraima 1000, BR-97105900 Santa Maria, RS, Brazil;

    Fed Univ Santa Maria UFSM, Chem Engn Dept, Environm Proc Lab LAPAM, Av Roraima 1000, BR-97105900 Santa Maria, RS, Brazil;

    Fed Univ Santa Maria UFSM, Chem Engn Dept, Environm Proc Lab LAPAM, Av Roraima 1000, BR-97105900 Santa Maria, RS, Brazil;

    Fed Univ Santa Maria UFSM, Chem Engn Dept, Environm Proc Lab LAPAM, Av Roraima 1000, BR-97105900 Santa Maria, RS, Brazil;

    Fed Univ Santa Maria UFSM, Dept Forest Sci, Av Roraima 1000, BR-97105900 Santa Maria, RS, Brazil;

    Fed Univ Santa Maria UFSM, Chem Engn Dept, Environm Proc Lab LAPAM, Av Roraima 1000, BR-97105900 Santa Maria, RS, Brazil;

    Fed Univ Santa Maria UFSM, Chem Engn Dept, Environm Proc Lab LAPAM, Av Roraima 1000, BR-97105900 Santa Maria, RS, Brazil;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Chromium(VI); Biopolymer; Nanocomposite; Centrifugal spinning; Heavy metal; Adsorption;

    机译：六价铬;生物聚合物;纳米复合材料;离心纺丝;重金属;吸附;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号