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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/14667
Title: Chitosan-Fe-Al-Mn metal oxyhydroxides composite as highly efficient fluoride scavenger for aqueous medium
Authors: Chaudhary M.
Rawat S.
Jain N.
Bhatnagar A.
Maiti, Abhijit
Published in: Carbohydrate Polymers
Abstract: Nano-particles are highly efficient fluoride adsorbents, but agglomerate easily due to their high surface activity and are difficult to separate from aqueous medium after use. Mixed-metals oxyhydroxides nano-particles were prepared into a natural polymeric matrix of chitosan to overcome these problems. Hydrous mixed-metal oxyhydroxides, loaded chitosan composite (Fe-Al-Mn@chitosan) was prepared using abundantly available laterite clay and waste from steel industry via co-precipitation method. Fluoride removal using Fe-Al-Mn@chitosan composite followed Freundlich isotherm model which revealed multilayer adsorption on heterogeneous surface sites. Fe-Al-Mn@chitosan exhibited maximum adsorption capacity of 40±0.5 mg/g, while if only the inorganic mass fraction of composite was considered; the value reached 55±0.5 mg/g. Fluoride adsorption on Fe-Al-Mn@chitosan followed the pseudo-second order kinetics with rapid adsorption. No significant effect of other competitive ions was observed on F − adsorption using Fe-Al-Mn@chitosan composite. The composite adsorbent is found to be effective to produce drinking water from fluoride contaminated groundwater. © 2019 Elsevier Ltd
Citation: Carbohydrate Polymers (2019), 216(): 140-148
URI: https://doi.org/10.1016/j.carbpol.2019.04.028
http://repository.iitr.ac.in/handle/123456789/14667
Issue Date: 2019
Publisher: Elsevier Ltd
Keywords: Clay
Ferromanganese slag
Fluoride removal
Mixed oxyhydroxides nano-particles
Polymeric-inorganic composite
ISSN: 1448617
Author Scopus IDs: 57190226557
57208186049
57210732499
7202474586
23994098600
Author Affiliations: Chaudhary, M., Department of Polymer and Process Engineering, Indian Institute of Technology, Roorkee, Saharanpur Campus, Saharanpur, 247001, India
Rawat, S., Department of Polymer and Process Engineering, Indian Institute of Technology, Roorkee, Saharanpur Campus, Saharanpur, 247001, India
Jain, N., Department of Polymer and Process Engineering, Indian Institute of Technology, Roorkee, Saharanpur Campus, Saharanpur, 247001, India
Bhatnagar, A., Department of Environmental and Biological Science, University of Eastern Finland, P.O. Box 1627, Kuopio, FI-70211, Finland
Maiti, A., Department of Polymer and Process Engineering, Indian Institute of Technology, Roorkee, Saharanpur Campus, Saharanpur, 247001, India
Funding Details: The Authors acknowledge the financial support through the projcet schemeof IMPRINT-I (Project number: 6125) sponsred by Ministry of Human Resource Development (MHRD) , and Ministry of Urban Development, Government of India .
Corresponding Author: Maiti, A.; Department of Polymer and Process Engineering, Indian Institute of TechnologyIndia; email: mabhifpt@iitr.ac.in
Appears in Collections:Journal Publications [PE]

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