Arsenate adsorption from water using a novel fabricated copper ferrite

Yao Jen Tu, Chen Feng You, Chien Kuei Chang, Shan Li Wang, Ting Shan Chan

研究成果: Article同行評審

69 引文 斯高帕斯(Scopus)

摘要

A novel fabricated copper ferrite was investigated for its As(V) removal in this study. The adsorption of As(V) by this recycled copper ferrite exhibited an L-shaped nonlinear isotherm, suggesting limited binding sites on the adsorbent surface. The As K-edge XANES indicated that the adsorbed As(V) on copper ferrite was not reduced to more toxic As(III) by Fe2+ in the structure. The maximum As adsorption capacity of the copper ferrite was 45.66mgg-1 at pH 3.7 and decreased with pH due to enhanced electrostatic repulsion between As(V) and the adsorbent surface. Desorption of As(V) using six different acid and salt solutions revealed that the desorption rate decreased in the order of H3PO4>Na3PO4>H2SO4>Na2SO4>HCl>HNO3. These results suggest that the recycled copper ferrite without surface modification is an effective adsorbent for removing As(V) from water, confirmed by effective removal of As(V) from contaminated groundwater. Furthermore, the novel fabricated copper ferrite can be used to recover rapidly in 20s using a magnet. The information obtained in this work shows great potential for developing a cost-effective adsorbent for immobilization of arsenate using the recycled copper ferrite.

原文English
頁(從 - 到)440-448
頁數9
期刊Chemical Engineering Journal
198-199
DOIs
出版狀態Published - 2012 8月 1

All Science Journal Classification (ASJC) codes

  • 化學 (全部)
  • 環境化學
  • 化學工程 (全部)
  • 工業與製造工程

指紋

深入研究「Arsenate adsorption from water using a novel fabricated copper ferrite」主題。共同形成了獨特的指紋。

引用此