Adsorption of Ni2+, Cd2+, PO43- and NO3- from aqueous solutions by nanostructured microfibrillated cellulose modified with carbonated hydroxyapatite

Sanna Hokkanen; Eveliina Repo; Lena Johansson Westholm; Song Lou; Tuomo Sainio; Mika Sillanpää

doi:10.1016/j.cej.2014.04.101

Adsorption of Ni²⁺, Cd²⁺, PO₄^3- and NO₃^- from aqueous solutions by nanostructured microfibrillated cellulose modified with carbonated hydroxyapatite

Sanna Hokkanen, Eveliina Repo, Lena Johansson Westholm, Song Lou, Tuomo Sainio, Mika Sillanpää

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

129 Citations (Scopus)

Abstract

The adsorption of Ni²⁺, Cd²⁺, PO₄^3- and NO₃^- by carbonated hydroxyapatite (CHA) modified microfibrillated cellulose (MFC) was studied in the aqueous solution. The modified adsorbent was characterized using elemental analysis, FTIR, SEM and EDAX analysis. The adsorption studies were conducted in batch mode. The effects of pH, contact time, the concentration of metals and the regeneration efficiency were studied. The removal of Ni²⁺, Cd²⁺, PO₄^3- and NO₃^- was not pH dependent. The maximum removal capacities of the CHA/MFC adsorbent for Ni²⁺, Cd²⁺, PO₄^3- and NO₃^- were 2.021, 1.224, 0.843 and 0.209mmol/g, respectively. The Langmuir and Sips models were representative to simulate adsorption isotherms. The results of adsorption kinetic indicate that adsorption was very fast for all studied compounds.

Original language	English
Pages (from-to)	64-74
Number of pages	11
Journal	Chemical Engineering Journal
Volume	252
DOIs	https://doi.org/10.1016/j.cej.2014.04.101
Publication status	Published - 15 Sept 2014
Externally published	Yes

Keywords

Adsorption
Carbonated hydroxyapatite (CHA)
Isotherms
Nanocellulose
Water treatment

ASJC Scopus subject areas

General Chemistry
Environmental Chemistry
General Chemical Engineering
Industrial and Manufacturing Engineering

Access to Document

10.1016/j.cej.2014.04.101

Cite this

@article{ca54104b35de4597831a46a471a4f8de,

title = "Adsorption of Ni2+, Cd2+, PO43- and NO3- from aqueous solutions by nanostructured microfibrillated cellulose modified with carbonated hydroxyapatite",

abstract = "The adsorption of Ni2+, Cd2+, PO43- and NO3- by carbonated hydroxyapatite (CHA) modified microfibrillated cellulose (MFC) was studied in the aqueous solution. The modified adsorbent was characterized using elemental analysis, FTIR, SEM and EDAX analysis. The adsorption studies were conducted in batch mode. The effects of pH, contact time, the concentration of metals and the regeneration efficiency were studied. The removal of Ni2+, Cd2+, PO43- and NO3- was not pH dependent. The maximum removal capacities of the CHA/MFC adsorbent for Ni2+, Cd2+, PO43- and NO3- were 2.021, 1.224, 0.843 and 0.209mmol/g, respectively. The Langmuir and Sips models were representative to simulate adsorption isotherms. The results of adsorption kinetic indicate that adsorption was very fast for all studied compounds.",

keywords = "Adsorption, Carbonated hydroxyapatite (CHA), Isotherms, Nanocellulose, Water treatment",

author = "Sanna Hokkanen and Eveliina Repo and Westholm, {Lena Johansson} and Song Lou and Tuomo Sainio and Mika Sillanp{\"a}{\"a}",

year = "2014",

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day = "15",

doi = "10.1016/j.cej.2014.04.101",

language = "English",

volume = "252",

pages = "64--74",

journal = "Chemical Engineering Journal",

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T1 - Adsorption of Ni2+, Cd2+, PO43- and NO3- from aqueous solutions by nanostructured microfibrillated cellulose modified with carbonated hydroxyapatite

AU - Hokkanen, Sanna

AU - Repo, Eveliina

AU - Westholm, Lena Johansson

AU - Lou, Song

AU - Sainio, Tuomo

AU - Sillanpää, Mika

PY - 2014/9/15

Y1 - 2014/9/15

N2 - The adsorption of Ni2+, Cd2+, PO43- and NO3- by carbonated hydroxyapatite (CHA) modified microfibrillated cellulose (MFC) was studied in the aqueous solution. The modified adsorbent was characterized using elemental analysis, FTIR, SEM and EDAX analysis. The adsorption studies were conducted in batch mode. The effects of pH, contact time, the concentration of metals and the regeneration efficiency were studied. The removal of Ni2+, Cd2+, PO43- and NO3- was not pH dependent. The maximum removal capacities of the CHA/MFC adsorbent for Ni2+, Cd2+, PO43- and NO3- were 2.021, 1.224, 0.843 and 0.209mmol/g, respectively. The Langmuir and Sips models were representative to simulate adsorption isotherms. The results of adsorption kinetic indicate that adsorption was very fast for all studied compounds.

AB - The adsorption of Ni2+, Cd2+, PO43- and NO3- by carbonated hydroxyapatite (CHA) modified microfibrillated cellulose (MFC) was studied in the aqueous solution. The modified adsorbent was characterized using elemental analysis, FTIR, SEM and EDAX analysis. The adsorption studies were conducted in batch mode. The effects of pH, contact time, the concentration of metals and the regeneration efficiency were studied. The removal of Ni2+, Cd2+, PO43- and NO3- was not pH dependent. The maximum removal capacities of the CHA/MFC adsorbent for Ni2+, Cd2+, PO43- and NO3- were 2.021, 1.224, 0.843 and 0.209mmol/g, respectively. The Langmuir and Sips models were representative to simulate adsorption isotherms. The results of adsorption kinetic indicate that adsorption was very fast for all studied compounds.

KW - Adsorption

KW - Carbonated hydroxyapatite (CHA)

KW - Isotherms

KW - Nanocellulose

KW - Water treatment

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JO - Chemical Engineering Journal

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