Synthesis and application of LDH intercalated cellulose nanocomposite for separation of rare earth elements (REEs)

Sidra Iftekhar; Varsha Srivastava; Mika Sillanpää

doi:10.1016/j.cej.2016.10.028

Synthesis and application of LDH intercalated cellulose nanocomposite for separation of rare earth elements (REEs)

Sidra Iftekhar, Varsha Srivastava, Mika Sillanpää

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

153 Citations (Scopus)

Abstract

Present study deals with the synthesis of Zn/Al Layered double hydroxide (LDH) intercalated cellulose (CL) nanocomposite. The CL-Zn/Al LDH nanocomposite was characterized by XRD, FTIR, BET, TEM and AFM. XRD analysis showed the crystalline nature of LDH nanocomposite. TEM analysis confirmed the formation of a sheet like structure of LDH. The synthesized CL-Zn/Al LDH nanocomposite was found to have a capacity of rapid uptake of Y³⁺, La³⁺ and Ce³⁺. Kinetic experiments revealed that equilibrium was achieved in 10 min for Y³⁺, La³⁺ and Ce³⁺. The kinetic data was well predicted by pseudo second order with higher correlation coefficient (R²) compared to pseudo first order. The adsorption capacities of Y³⁺, La³⁺ and Ce³⁺ was found to be 102.25, 92.51 and 96.25 mg/g, respectively, according to Langmuir model. Analysis of thermodynamic studies for Y³⁺, La³⁺ and Ce³⁺ showed that the process of adsorption is spontaneous and endothermic in nature. The CL-Zn/Al LDH nanocomposite revealed a good reusability up to five cycles. The CL-Zn/Al LDH showed good adsorption and selectivity for Y³⁺, La³⁺ and Ce³⁺ in the presence of other ions. Therefore, CL-Zn/Al LDH nanocomposite has a great potential to be used for the adsorption of Y³⁺, La³⁺ and Ce³⁺.

Original language	English
Pages (from-to)	130-139
Number of pages	10
Journal	Chemical Engineering Journal
Volume	309
DOIs	https://doi.org/10.1016/j.cej.2016.10.028
Publication status	Published - 1 Feb 2017
Externally published	Yes

Keywords

Adsorption
Kinetics
Layered double hydroxide
Rare earth elements

ASJC Scopus subject areas

General Chemistry
Environmental Chemistry
General Chemical Engineering
Industrial and Manufacturing Engineering

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10.1016/j.cej.2016.10.028

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title = "Synthesis and application of LDH intercalated cellulose nanocomposite for separation of rare earth elements (REEs)",

abstract = "Present study deals with the synthesis of Zn/Al Layered double hydroxide (LDH) intercalated cellulose (CL) nanocomposite. The CL-Zn/Al LDH nanocomposite was characterized by XRD, FTIR, BET, TEM and AFM. XRD analysis showed the crystalline nature of LDH nanocomposite. TEM analysis confirmed the formation of a sheet like structure of LDH. The synthesized CL-Zn/Al LDH nanocomposite was found to have a capacity of rapid uptake of Y3+, La3+ and Ce3+. Kinetic experiments revealed that equilibrium was achieved in 10 min for Y3+, La3+ and Ce3+. The kinetic data was well predicted by pseudo second order with higher correlation coefficient (R2) compared to pseudo first order. The adsorption capacities of Y3+, La3+ and Ce3+ was found to be 102.25, 92.51 and 96.25 mg/g, respectively, according to Langmuir model. Analysis of thermodynamic studies for Y3+, La3+ and Ce3+ showed that the process of adsorption is spontaneous and endothermic in nature. The CL-Zn/Al LDH nanocomposite revealed a good reusability up to five cycles. The CL-Zn/Al LDH showed good adsorption and selectivity for Y3+, La3+ and Ce3+ in the presence of other ions. Therefore, CL-Zn/Al LDH nanocomposite has a great potential to be used for the adsorption of Y3+, La3+ and Ce3+.",

keywords = "Adsorption, Kinetics, Layered double hydroxide, Rare earth elements",

author = "Sidra Iftekhar and Varsha Srivastava and Mika Sillanp{\"a}{\"a}",

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AU - Iftekhar, Sidra

AU - Srivastava, Varsha

AU - Sillanpää, Mika

PY - 2017/2/1

Y1 - 2017/2/1

N2 - Present study deals with the synthesis of Zn/Al Layered double hydroxide (LDH) intercalated cellulose (CL) nanocomposite. The CL-Zn/Al LDH nanocomposite was characterized by XRD, FTIR, BET, TEM and AFM. XRD analysis showed the crystalline nature of LDH nanocomposite. TEM analysis confirmed the formation of a sheet like structure of LDH. The synthesized CL-Zn/Al LDH nanocomposite was found to have a capacity of rapid uptake of Y3+, La3+ and Ce3+. Kinetic experiments revealed that equilibrium was achieved in 10 min for Y3+, La3+ and Ce3+. The kinetic data was well predicted by pseudo second order with higher correlation coefficient (R2) compared to pseudo first order. The adsorption capacities of Y3+, La3+ and Ce3+ was found to be 102.25, 92.51 and 96.25 mg/g, respectively, according to Langmuir model. Analysis of thermodynamic studies for Y3+, La3+ and Ce3+ showed that the process of adsorption is spontaneous and endothermic in nature. The CL-Zn/Al LDH nanocomposite revealed a good reusability up to five cycles. The CL-Zn/Al LDH showed good adsorption and selectivity for Y3+, La3+ and Ce3+ in the presence of other ions. Therefore, CL-Zn/Al LDH nanocomposite has a great potential to be used for the adsorption of Y3+, La3+ and Ce3+.

AB - Present study deals with the synthesis of Zn/Al Layered double hydroxide (LDH) intercalated cellulose (CL) nanocomposite. The CL-Zn/Al LDH nanocomposite was characterized by XRD, FTIR, BET, TEM and AFM. XRD analysis showed the crystalline nature of LDH nanocomposite. TEM analysis confirmed the formation of a sheet like structure of LDH. The synthesized CL-Zn/Al LDH nanocomposite was found to have a capacity of rapid uptake of Y3+, La3+ and Ce3+. Kinetic experiments revealed that equilibrium was achieved in 10 min for Y3+, La3+ and Ce3+. The kinetic data was well predicted by pseudo second order with higher correlation coefficient (R2) compared to pseudo first order. The adsorption capacities of Y3+, La3+ and Ce3+ was found to be 102.25, 92.51 and 96.25 mg/g, respectively, according to Langmuir model. Analysis of thermodynamic studies for Y3+, La3+ and Ce3+ showed that the process of adsorption is spontaneous and endothermic in nature. The CL-Zn/Al LDH nanocomposite revealed a good reusability up to five cycles. The CL-Zn/Al LDH showed good adsorption and selectivity for Y3+, La3+ and Ce3+ in the presence of other ions. Therefore, CL-Zn/Al LDH nanocomposite has a great potential to be used for the adsorption of Y3+, La3+ and Ce3+.

KW - Adsorption

KW - Kinetics

KW - Layered double hydroxide

KW - Rare earth elements

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JO - Chemical Engineering Journal

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Synthesis and application of LDH intercalated cellulose nanocomposite for separation of rare earth elements (REEs)

Abstract

Keywords

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