Journal of Natural Environment

Removal of dye from textile effluent by titanium dioxide, ferrite cobalt, and titanium dioxide/ferrite cobalt nanofibers

Document Type : Research Paper

Authors

1 PhD student of Textile, Yazd Branch, Islamic Azad University, Yazd, Iran

2 Assistant Professor of Textile , Yazd Branch, Islamic Azad University, Yazd, Iran

3 Professor of Textile , Yazd Branch, Islamic Azad University, Yazd, Iran

Abstract

Increasing use of dyes and pollution with containing dyes is one of the major environmental problems and, various methods for the treatment of effluents containing dyes have been investigated. In this study, TiO2, CoFe2O4 and TiO2/CoFe2O4 nanofibers were prepared using electrospinning process and the effect of voltage and electrospinning distance on the diameter and morphology of nanofibers were investigated. Samples of prepared nanofiber were used as adsorbents for decolonization of effluents containing direct and red 80 dyes. The effect of various parameters such as the content of adsorbent, dye concentration and pH on the decolonization efficiency was investigated. Structural and optical properties of prepared nanofibers were characterized by scanning electron microscopy (SEM), X-ray diffraction pattern (XRD), specific surface determination test (BET) and, UV-Vis spectroscopy has been used to study the adsorption of dyes. The obtained SEM images showed that the average diameter of all three prepared nanofiber samples of TiO2, CoFe2O4 and TiO2 / CoFe2O4 is less than 100 nm. The results of XRD show that the nanostructures prepared after heat treatment have a structure with a crystalline dominant phase. BET results show that the dye degradation rate k in TiO2/CoFe2O4 nanofibers is 93.45 (ppm/h), which is much better than the other two nanofibers. The results show that the dye degradation efficiency of TiO2/CoFe2O4 nanofibers was much better than TiO2 and CoFe2O4.

Keywords

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Journal of Natural Environment
Volume 74, Issue 2
September 2021
Pages 250-263