Chitosan-Fe-Al-Mn metal oxyhydroxides composite as highly efficient fluoride scavenger for aqueous medium

Mohit Chaudhary; Shweta Rawat; Nishant Jain; Amit Bhatnagar; Abhijit Maiti

doi:10.1016/j.carbpol.2019.04.028

Chitosan-Fe-Al-Mn metal oxyhydroxides composite as highly efficient fluoride scavenger for aqueous medium

Mohit Chaudhary, Shweta Rawat, Nishant Jain, Amit Bhatnagar, Abhijit Maiti

Research output: Contribution to journal › Article › peer-review

56 Scopus citations

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.

Original language	English
Pages (from-to)	140-148
Number of pages	9
Journal	Carbohydrate Polymers
Volume	216
DOIs	https://doi.org/10.1016/j.carbpol.2019.04.028
State	Published - 15 Jul 2019
Externally published	Yes

Keywords

Clay
Ferromanganese slag
Fluoride removal
Mixed oxyhydroxides nano-particles
Polymeric-inorganic composite

ASJC Scopus subject areas

Organic Chemistry
Polymers and Plastics
Materials Chemistry

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.carbpol.2019.04.028

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title = "Chitosan-Fe-Al-Mn metal oxyhydroxides composite as highly efficient fluoride scavenger for aqueous medium",

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.",

keywords = "Clay, Ferromanganese slag, Fluoride removal, Mixed oxyhydroxides nano-particles, Polymeric-inorganic composite",

author = "Mohit Chaudhary and Shweta Rawat and Nishant Jain and Amit Bhatnagar and Abhijit Maiti",

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year = "2019",

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doi = "10.1016/j.carbpol.2019.04.028",

language = "English",

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AU - Chaudhary, Mohit

AU - Rawat, Shweta

AU - Jain, Nishant

AU - Bhatnagar, Amit

AU - Maiti, Abhijit

PY - 2019/7/15

Y1 - 2019/7/15

N2 - 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.

AB - 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.

KW - Clay

KW - Ferromanganese slag

KW - Fluoride removal

KW - Mixed oxyhydroxides nano-particles

KW - Polymeric-inorganic composite

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JF - Carbohydrate Polymers

ER -

Chitosan-Fe-Al-Mn metal oxyhydroxides composite as highly efficient fluoride scavenger for aqueous medium

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

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