Recovery of Gold from Chloride Solution by TEMPO-Oxidized Cellulose Nanofiber Adsorbent

Shila Jafari; Benjamin P. Wilson; Minna Hakalahti; Tekla Tammelin; Eero Kontturi; Mari Lundström; Mika Sillanpää

doi:10.3390/su11051406

Recovery of Gold from Chloride Solution by TEMPO-Oxidized Cellulose Nanofiber Adsorbent

Shila Jafari
, Benjamin P. Wilson
, Minna Hakalahti
, Tekla Tammelin
, Eero Kontturi
, Mari Lundström
, Mika Sillanpää

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

24 Citations (Scopus)

262 Downloads (Pure)

Abstract

The goal of this study was to assess the sustainability of a modified cellulose nanofiber material for the recovery of precious gold from chloride solution, with a special focus on gold recovery from acidic solutions generated by cupric and ferric chloride leaching processes. TEMPO-oxidized cellulose nanofiber in hydrogel (TOCN), dry (H-TOCN, F-TOCN) and sheet form (S-TOCN) was examined for gold adsorptivity from chloride solution. Additionally, this work describes the optimum conditions and parameters for gold recovery. The data obtained in this investigation are also modeled using kinetic (pseudo first-order and pseudo second-order), isotherm best fit (Freundlich, Langmuir and Langmuir-Freundlich), and thermodynamic (endothermic process) parameters. Results demonstrate that high levels of gold removal can be achieved with TEMPO-oxidized cellulose nanofibers (98% by H-TOCNF) and the interaction characteristics of H-TOCN with gold suggests that other precious metals could also be efficiently recovered.

Original language	English
Article number	1406
Number of pages	16
Journal	SUSTAINABILITY
Volume	11
Issue number	5
DOIs	https://doi.org/10.3390/su11051406
Publication status	Published - 6 Mar 2019
MoE publication type	A1 Journal article-refereed

Keywords

Gold chlorides
TEMPO-oxidized cellulose nanofibril
Adsorption
Sustainability

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10.3390/su11051406Licence: CC BY

Jafari_Sustainability-11-01406
© 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
Final published version, 3.2 MBLicence: CC BY

Cite this

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title = "Recovery of Gold from Chloride Solution by TEMPO-Oxidized Cellulose Nanofiber Adsorbent",

abstract = "The goal of this study was to assess the sustainability of a modified cellulose nanofiber material for the recovery of precious gold from chloride solution, with a special focus on gold recovery from acidic solutions generated by cupric and ferric chloride leaching processes. TEMPO-oxidized cellulose nanofiber in hydrogel (TOCN), dry (H-TOCN, F-TOCN) and sheet form (S-TOCN) was examined for gold adsorptivity from chloride solution. Additionally, this work describes the optimum conditions and parameters for gold recovery. The data obtained in this investigation are also modeled using kinetic (pseudo first-order and pseudo second-order), isotherm best fit (Freundlich, Langmuir and Langmuir-Freundlich), and thermodynamic (endothermic process) parameters. Results demonstrate that high levels of gold removal can be achieved with TEMPO-oxidized cellulose nanofibers (98\% by H-TOCNF) and the interaction characteristics of H-TOCN with gold suggests that other precious metals could also be efficiently recovered. ",

keywords = "Gold chlorides, TEMPO-oxidized cellulose nanofibril, Adsorption, Sustainability",

author = "Shila Jafari and Wilson, \{Benjamin P.\} and Minna Hakalahti and Tekla Tammelin and Eero Kontturi and Mari Lundstr{\"o}m and Mika Sillanp{\"a}{\"a}",

year = "2019",

month = mar,

day = "6",

doi = "10.3390/su11051406",

language = "English",

volume = "11",

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T1 - Recovery of Gold from Chloride Solution by TEMPO-Oxidized Cellulose Nanofiber Adsorbent

AU - Jafari, Shila

AU - Wilson, Benjamin P.

AU - Hakalahti, Minna

AU - Tammelin, Tekla

AU - Kontturi, Eero

AU - Lundström, Mari

AU - Sillanpää, Mika

PY - 2019/3/6

Y1 - 2019/3/6

N2 - The goal of this study was to assess the sustainability of a modified cellulose nanofiber material for the recovery of precious gold from chloride solution, with a special focus on gold recovery from acidic solutions generated by cupric and ferric chloride leaching processes. TEMPO-oxidized cellulose nanofiber in hydrogel (TOCN), dry (H-TOCN, F-TOCN) and sheet form (S-TOCN) was examined for gold adsorptivity from chloride solution. Additionally, this work describes the optimum conditions and parameters for gold recovery. The data obtained in this investigation are also modeled using kinetic (pseudo first-order and pseudo second-order), isotherm best fit (Freundlich, Langmuir and Langmuir-Freundlich), and thermodynamic (endothermic process) parameters. Results demonstrate that high levels of gold removal can be achieved with TEMPO-oxidized cellulose nanofibers (98% by H-TOCNF) and the interaction characteristics of H-TOCN with gold suggests that other precious metals could also be efficiently recovered.

AB - The goal of this study was to assess the sustainability of a modified cellulose nanofiber material for the recovery of precious gold from chloride solution, with a special focus on gold recovery from acidic solutions generated by cupric and ferric chloride leaching processes. TEMPO-oxidized cellulose nanofiber in hydrogel (TOCN), dry (H-TOCN, F-TOCN) and sheet form (S-TOCN) was examined for gold adsorptivity from chloride solution. Additionally, this work describes the optimum conditions and parameters for gold recovery. The data obtained in this investigation are also modeled using kinetic (pseudo first-order and pseudo second-order), isotherm best fit (Freundlich, Langmuir and Langmuir-Freundlich), and thermodynamic (endothermic process) parameters. Results demonstrate that high levels of gold removal can be achieved with TEMPO-oxidized cellulose nanofibers (98% by H-TOCNF) and the interaction characteristics of H-TOCN with gold suggests that other precious metals could also be efficiently recovered.

KW - Gold chlorides

KW - TEMPO-oxidized cellulose nanofibril

KW - Adsorption

KW - Sustainability

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DO - 10.3390/su11051406

M3 - Article

SN - 2071-1050

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JO - SUSTAINABILITY

JF - SUSTAINABILITY

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M1 - 1406

ER -

Recovery of Gold from Chloride Solution by TEMPO-Oxidized Cellulose Nanofiber Adsorbent

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Recovery of Gold from Chloride Solution by TEMPO-Oxidized Cellulose Nanofiber Adsorbent

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FinnCERES: Competence Center for the Materials Bioeconomy: A Flagship for our Sustainable Future

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Raw Materials Research Infrastructure

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