a b s t r a c tIn this paper, the p

a b s t r a c t
In this paper, the performances and efficiency of some novel polymer membranes doped with fumed
silica powder were investigated. The membranes obtained using a laboratory electrodialysis system was
involved in zinc ions removal from model wastewater system. The experiments were carried out using
three concentrations of zinc ions: 500, 1000 and 1500 ppm, respectively; an applied voltage of 5, 10 and
20V; flow rate: 13 mL/min; time for each experiment: 2 h. The removal ratio (R) and mass flow (J) of zinc
ions and also water content (% wt.) were determined. Membranes were characterized by Fourier Trans-
form Infrared Spectroscopy (FTIR), Thermogravimetric Analysis (TGA), Scanning Electron Microscopy
(SEM) and electrochemical impedance spectroscopy (EIS). The results indicated that the membranes
doped with fumed silica powder significantly influenced the zinc ions removal process from wastewater,
this fact being proved by a strong enhancement of the removal ratio from 27.56 ± 0.38% to 96.30 ± 0.11%
and by the increase of the mass flow from 8.79 ± 0.12 g/m2h to 92.33 ± 0.10 g/m2h. The FTIR-ATR spectra
showed the existence of a peak located at ∼1079 cm−1 indicating the presence of silica. The TGA results
indicated an improvement of the fouling resistance of the membranes doped with incorporated fumed
silica powder. Other properties are also enhanced by the addition of fumed silica, namely the membrane
hydrophilicity and the ionic conductivity. The highest ionic conductivity was 0.8937 mS/cm at 20V.
© 2015 Elsevier Ltd. All rights reserv

ผลลัพธ์ (อังกฤษ) 3:

a t
本文，表演和一些新型聚合物膜掺气相二氧化硅粉
效率研究。得到的膜使用实验室的电渗析系统
参与锌离子去除系统。试验采用
三浓度的锌离子进行：500，1000和1500分钟，分别；5施加电压，10和
20V；流速：13 mL/min；每个实验的时间：2 h去除率（R）和流量（J）的锌离子和
水含量（重量%）的测定。膜的特点是傅里叶变换红外光谱（FTIR）
形式，热重分析（TGA），扫描电子显微镜（SEM）
和电化学阻抗谱（EIS）。结果表明，膜
掺杂二氧化硅粉显著影响锌离子去除过程的废水，
这个事实证明一个强大的去除率提高27.56±0.38%到96.30±0.11%
和由8.79±0.12 g/m2h 92.33±0.10 g/m2h的质量流量增加
FTIR-ATR光谱。显示一个峰值位于1079厘米∼−1指示的二氧化硅的存在的存在。TGA结果
表明改进的膜污染阻力掺杂掺气相
石英粉。其他属性也由气相法白炭黑的加入而提高，即膜的亲水性和离子导电性
。最高的离子电导率为0。8937 mS/cm在20V。
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