Abstract
The paper studies the synthesis, performance, and modeling of conducting copolymers of poly(o-phenetidine-co-o-anisidine/TiO2), poly(o-phenetidine-co-o-toluidine/TiO2), poly(o-phenetidine-co-o-toluidine/Fe3O4) and poly(o-phenetidine-co-o-anisidine/Fe3O4) on a stainless steel electrode in a batch reactor for removal of fluoride ions. As a safety method, the electrically switching ion exchange was used as the ion exchange process. In addition, modeling and optimization of the process was done by the response surface methodology (RSM) based on central composite design (CCD). The independent variables in the RSM were applied potential (V) and pH of fluoride solution. A real tap water was chosen as the water sample. The poly(o-phenetidine-co-o-anisidine/Fe3O4) has shown better results in the fluoride ions removal and regeneration–reuse process. Also, the other poly(o-phenetidine-co-o-anisidine/Fe3O4), under the controlled conditions of pH of 6.26 and the applied potential of 1.06V, shows a high ability in fluoride removal of 71.76% and after three successive cycles still has a fluoride removal ability of 16%.
Published Version
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