Removal of fluoride from water by nanocomposites of POPOA/Fe3O4, POPOA/TiO2, POPOT/Fe3O4 and POPOT/TiO2: Modelling and optimization via RSM

Highly Efficient Defluoridation of Water through Reusable poly(aniline-co-o-aminophenol) Copolymer Modified Electrode Using Electrochemical Quartz Crystal Microbalance

“…[1][2][3][4] Therefore, a variety of defluoridation techniques have been explored including precipitation, 5 adsorption onto activated alumina, 6 nanofiltration 7 and electrochemically switched ion-exchange (ESIX) based on conducting polymers. 8,9 Amongst these techniques, ESIX is one of the most attractive methods as it allows the user to alter the potential applied to a conducting polymer film, such that either insertion or expulsion of the counter-ions can be efficiently achieved. Furthermore, the ESIX technique presented here provides simple regeneration of films without the necessity for chemical additives or water electrolysis, which significantly reduces waste and cost.…”

Electrogravimetric analysis of poly(aniline-co-o-toluidine) copolymer films in the presence of fluoride ions

“…The proposed concentration of fluoride in drinking water is 1.5 mg L -1 by World Health Organisation [27][28][29][30]. Therefore, numerous techniques have emerged for defluoridation processes, such as precipitation [31,32], adsorption onto activated alumina [33], nanofiltration [34], and electrochemically switched ion-exchange (ESIX) techniques based on conducting polymers [35,36], and the last one is the one of the most promising methods due to its simplicity and inexpensiveness [37]. Studies published in the literature also confirm that the ESIX technique is a highly convenient to extract silver [38], chromium (VI) [39] and perchlorate ions [40] from water and wastewater.…”