Phosphorylated cellulose triacetate-silica composite adsorbent for recovery of heavy metal ion

Niharika Srivastava; Amit K. Thakur; Vinod K. Shahi

doi:10.1016/j.carbpol.2015.10.047

Phosphorylated cellulose triacetate-silica composite adsorbent for recovery of heavy metal ion

Niharika Srivastava, Amit K. Thakur, Vinod K. Shahi

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

35 Scopus citations

Abstract

Phosphorylated cellulose triacetate (CTA)/silica composite adsorbent was prepared by acid catalyzed sol-gel method using an inorganic precursor (3-aminopropyl triethoxysilane (APTEOS)). Reported composite adsorbent showed comparatively high adsorption capacity for Ni(II) in compare with different heavy metal ions (Cu²⁺, Ni²⁺, Cd²⁺ and Pb²⁺). For Ni(II) adsorption, effect of time, temperature, pH, adsorbent dose and adsorbate concentration were investigated; different kinetic models were also evaluated. Thermodynamic parameters such as ΔG°, ΔH°and ΔS°were also estimated and equilibrium adsorption obeyed Langmuir and Freundlich isotherms. Developed adsorbent exhibited about 78.8% Ni(II) adsorption at pH: 6 and a suitable candidate for the removal of Ni(II) ions from wastewater. Further, about 65.5% recovery of adsorbed Ni(II) using EDTA solution was demonstrated, which suggested effective recycling of the functionalized beads would enable it to be used in the treatment of contaminated water in industry.

Original language	English
Pages (from-to)	1315-1322
Number of pages	8
Journal	Carbohydrate Polymers
Volume	136
DOIs	https://doi.org/10.1016/j.carbpol.2015.10.047
State	Published - 20 Jan 2016
Externally published	Yes

Keywords

Biopolymer adsorbent
Cellulose triacetate (CTA)/silica composite
Metal ions adsorption
Recovery of Ni(II)

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.2015.10.047

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title = "Phosphorylated cellulose triacetate-silica composite adsorbent for recovery of heavy metal ion",

abstract = "Phosphorylated cellulose triacetate (CTA)/silica composite adsorbent was prepared by acid catalyzed sol-gel method using an inorganic precursor (3-aminopropyl triethoxysilane (APTEOS)). Reported composite adsorbent showed comparatively high adsorption capacity for Ni(II) in compare with different heavy metal ions (Cu2+, Ni2+, Cd2+ and Pb2+). For Ni(II) adsorption, effect of time, temperature, pH, adsorbent dose and adsorbate concentration were investigated; different kinetic models were also evaluated. Thermodynamic parameters such as ΔG°, ΔH°and ΔS°were also estimated and equilibrium adsorption obeyed Langmuir and Freundlich isotherms. Developed adsorbent exhibited about 78.8% Ni(II) adsorption at pH: 6 and a suitable candidate for the removal of Ni(II) ions from wastewater. Further, about 65.5% recovery of adsorbed Ni(II) using EDTA solution was demonstrated, which suggested effective recycling of the functionalized beads would enable it to be used in the treatment of contaminated water in industry.",

keywords = "Biopolymer adsorbent, Cellulose triacetate (CTA)/silica composite, Metal ions adsorption, Recovery of Ni(II)",

author = "Niharika Srivastava and Thakur, {Amit K.} and Shahi, {Vinod K.}",

year = "2016",

month = jan,

day = "20",

doi = "10.1016/j.carbpol.2015.10.047",

language = "English",

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journal = "Carbohydrate Polymers",

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TY - JOUR

T1 - Phosphorylated cellulose triacetate-silica composite adsorbent for recovery of heavy metal ion

AU - Srivastava, Niharika

AU - Thakur, Amit K.

AU - Shahi, Vinod K.

PY - 2016/1/20

Y1 - 2016/1/20

N2 - Phosphorylated cellulose triacetate (CTA)/silica composite adsorbent was prepared by acid catalyzed sol-gel method using an inorganic precursor (3-aminopropyl triethoxysilane (APTEOS)). Reported composite adsorbent showed comparatively high adsorption capacity for Ni(II) in compare with different heavy metal ions (Cu2+, Ni2+, Cd2+ and Pb2+). For Ni(II) adsorption, effect of time, temperature, pH, adsorbent dose and adsorbate concentration were investigated; different kinetic models were also evaluated. Thermodynamic parameters such as ΔG°, ΔH°and ΔS°were also estimated and equilibrium adsorption obeyed Langmuir and Freundlich isotherms. Developed adsorbent exhibited about 78.8% Ni(II) adsorption at pH: 6 and a suitable candidate for the removal of Ni(II) ions from wastewater. Further, about 65.5% recovery of adsorbed Ni(II) using EDTA solution was demonstrated, which suggested effective recycling of the functionalized beads would enable it to be used in the treatment of contaminated water in industry.

AB - Phosphorylated cellulose triacetate (CTA)/silica composite adsorbent was prepared by acid catalyzed sol-gel method using an inorganic precursor (3-aminopropyl triethoxysilane (APTEOS)). Reported composite adsorbent showed comparatively high adsorption capacity for Ni(II) in compare with different heavy metal ions (Cu2+, Ni2+, Cd2+ and Pb2+). For Ni(II) adsorption, effect of time, temperature, pH, adsorbent dose and adsorbate concentration were investigated; different kinetic models were also evaluated. Thermodynamic parameters such as ΔG°, ΔH°and ΔS°were also estimated and equilibrium adsorption obeyed Langmuir and Freundlich isotherms. Developed adsorbent exhibited about 78.8% Ni(II) adsorption at pH: 6 and a suitable candidate for the removal of Ni(II) ions from wastewater. Further, about 65.5% recovery of adsorbed Ni(II) using EDTA solution was demonstrated, which suggested effective recycling of the functionalized beads would enable it to be used in the treatment of contaminated water in industry.

KW - Biopolymer adsorbent

KW - Cellulose triacetate (CTA)/silica composite

KW - Metal ions adsorption

KW - Recovery of Ni(II)

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U2 - 10.1016/j.carbpol.2015.10.047

DO - 10.1016/j.carbpol.2015.10.047

M3 - Article

C2 - 26572476

AN - SCOPUS:84945947292

SN - 0144-8617

VL - 136

SP - 1315

EP - 1322

JO - Carbohydrate Polymers

JF - Carbohydrate Polymers

ER -

Phosphorylated cellulose triacetate-silica composite adsorbent for recovery of heavy metal ion

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

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