• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>International Conference on Composite Materials and Materials Engineering >Nanostructured Membrane of Sodium Montmorillonite Reinforced Cellulose Acetate for Adsorption of Ca(ll) and Mg(II) Ions in Hard Water
【24h】

Nanostructured Membrane of Sodium Montmorillonite Reinforced Cellulose Acetate for Adsorption of Ca(ll) and Mg(II) Ions in Hard Water

机译：醋酸钠纳米结构膜加醋酸纤维素，用于吸附硬水中Ca（L1）和Mg（II）离子的吸附

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Permanent hard water softening was conducted with the use of cellulose acetate (CA)/sodium montmorillonite (Na~+-MMT) nanostructured membranes. Fabrication of the nanostructured membranes with various Na~+-MMT loading (0%, 5%, 10%, 15%) was made possible by electrospinning technique, which was carried out at 25°C, 30 kV applied voltage, needle size of 25G and a tip to collector distance of 18 cm. The effect of Na+-MMT content on the morphology of the fiber was examined with the use of Scanning Electron Microscope (SEM). It was determined that increasing the Na+-MMT loading decreases the average fiber diameter. The molecular structure of the blend nanostructured membranes were investigated using Fourier Transform Infrared (FTIR) Spectroscopy and the existence of CA and Na+-MMT in the electrospun nanostructured membrane was confirmed. Better adsorption performance was observed for the blend with 15% Na~+-MMT as compared to pure CA and maximum uptake rate was attained at 7 hours for pure CA and only 5 hours for CA/Na~+-MMT (85%/15%) blend. Increasing the initial hard water concentration increases the driving force for diffusion and in turn increases adsorption capacity of both pure CA and the CA/Na~+-MMT (85%/15%) blend. More so, the results of the experiment best fitted the pseudo-second order kinetic model and the Freundlich isotherm model. Integration of Na+-MMT in CA increases the surface area for adsorption of the nanostructured membrane, and thus, could be used as an effective adsorbent for hard water softening.
机译：使用醋酸纤维素（CA）/蒙脱石（Na〜+ -MMT）纳米结构膜进行永久性硬水软化。通过静电纺丝技术可以制造具有各种Na〜+ -MMT负载的纳米结构膜（0％，5％，10％，15％），其在25℃，30kV施加的电压，针尺寸下进行25g和尖端到收集器距离为18厘米。通过使用扫描电子显微镜（SEM）检查Na + -MMT含量对纤维形态的影响。确定增加Na + -MMT负载降低了平均纤维直径。使用傅立叶变换红外（FTIR）光谱研究了混合物纳米结构膜的分子结构，并确认了电纺纳米结构膜中的Ca和Na + -mmt的存在。对于15％Na〜+ -mmt的混合物观察到更好的吸附性能，与纯CA相比，纯Ca的7小时达到最大摄取率，仅适用于Ca / Na〜+ -mmt（85％/ 15） ％） 混合。增加初始硬水浓度增加了扩散的驱动力，又增加了纯Ca和Ca / Na〜+ -mmt（85％/ 15％）混合物的吸附能力。此外，实验结果最适合伪二阶动力学模型和Freundlich等温模型。 Na + -mmt在Ca中的整合增加了纳米结构膜吸附的表面积，因此，可以用作硬水软化的有效吸附剂。

著录项

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