1. Capability characterization of pectin-amidoxime-Fe composites for fluoride removal in real conditions and column studies for practical use.
- Author
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Sharma, P., Sen, K., Singh, P., Kumar, A., and Chauhan, K.
- Subjects
COMPOSITE columns ,TRANSITION metals ,TRANSITION metal ions ,FLUORIDES ,WATER sampling - Abstract
Authors in their earlier study confirmed the high specificity of spherically shaped pectin-g-poly(amidoxime)-Fe composites for the removal of fluoride ions even at trace levels. In view of that, in this study, the above revealed composites were used in real conditions by using water samples from different rivers of Himachal Pradesh, India, and also performed the scaled studies in prototype column filter to conclude the capability of pectin-g-poly(amidoxime)-Fe composites for translation research. The results showed a marginal reduction of ~ 10% in the fluoride adsorption capability of spherically shaped pectin-g-poly(amidoxime)-Fe composites in real conditions from different rivers of Himachal Pradesh, India, in comparison to the simulated water-system. Afterward, the results were confirmed by FTIR, SEM and TEM studies to describe the mechanistic details. A prototype column filter was constructed with spherically shaped iron-impregnated-pectin-poly(amidoxime) composites to analyze the applicability in fluoride adsorption for domestic and industrial scale. The results demonstrated that the column filter established with 1.0 g adsorbent media was capable to treat 3.0 L of 10 ppm fluoride solution much lower to the permitted WHO maximum limit of 1.0 ppm. Also, the adsorption study was extended for transition metal ions of major concern i.e. Zn
2+ , Fe3+ , Pb2+ , and Cu2+ to assess the potential of pectin-g-poly(amidoxime) as a comprehensive solution of universal application. The findings concluded that the synthesized composites in spherical shape can be a guide for the media selection or as media/filler along with carbonaceous materials (in already existing technology) in constructing the economical portable filter of high efficiency to protect public health. [ABSTRACT FROM AUTHOR]- Published
- 2023
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