LrgpV1, Hal, Curation, bibRecord, 000051

A new process for nickel ammonium disulfate production from ash of the hyperaccumulating plant Alyssum murale

Identifieur interne : 000051 ( Hal/Curation ); précédent : 000050; suivant : 000052

A new process for nickel ammonium disulfate production from ash of the hyperaccumulating plant Alyssum murale

Auteurs : R. Barbaroux [Canada] ; E. Plasari [France] ; G. Mercier [Canada] ; M. O Simonnot [France] ; J. L. Morel [France] ; J. F. Blais [Canada]

Source :

Science of the Total Environment [ 0048-9697 ] ; 2012.

RBID : Hal:hal-00684424

Descripteurs français

Wicri :
- topic : Nickel.

English descriptors

mix :
- Alyssummurale, Leaching, Metal hyperaccumulator, Nickel, Phytomining, Precipitation.

Abstract

The extraction of nickel (Ni) from ultramafic soils by phytomining can be achieved using Alyssummurale cultures. This study presents anewprocess for the valorization of Ni accumulated by this plant through the production of a Ni ammoniumdisulfate salt (Ni(NH4)2(SO4)2.6H2O). The process comprises an initial leaching of the ashes of A. murale with a sulphuric acid solution (1.9 M H2SO4, T = 95 °C, t = 240 min, TS = 150 g ash L− 1), producing a leachate rich in Ni (10.2 g Ni L− 1; 96% Ni solubilisation), Mg, P, K, Fe, Ca and Al. The pH of the acid leachate is increased to 5.0 with NaOH (5 M), followed by an evaporation step which produced a purified solution rich in Ni (21.3 g Ni L− 1) and an iron hydroxide precipitate. The cold crystallization (T = 2 °C, t = 6 h) of this solution by the stoichiometric addition (× 1.2) of ammonium sulfate generates a Ni ammoniumdisulfate salt, containing 13.2% Ni, that is potentially valuable to industry.

Url:

https://hal.archives-ouvertes.fr/hal-00684424

DOI: 10.1016/j.scitotenv.2012.01.063

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Hal:hal-00684424

Le document en format XML

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<profileDesc><textClass><keywords scheme="mix" xml:lang="en"><term>Alyssummurale</term>
<term>Leaching</term>
<term>Metal hyperaccumulator</term>
<term>Nickel</term>
<term>Phytomining</term>
<term>Precipitation</term>
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<keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Nickel</term>
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<front><div type="abstract" xml:lang="en">The extraction of nickel (Ni) from ultramafic soils by phytomining can be achieved using Alyssummurale cultures. This study presents anewprocess for the valorization of Ni accumulated by this plant through the production of a Ni ammoniumdisulfate salt (Ni(NH4)2(SO4)2.6H2O). The process comprises an initial leaching of the ashes of A. murale with a sulphuric acid solution (1.9 M H2SO4, T = 95 °C, t = 240 min, TS = 150 g ash L− 1), producing a leachate rich in Ni (10.2 g Ni L− 1; 96% Ni solubilisation), Mg, P, K, Fe, Ca and Al. The pH of the acid leachate is increased to 5.0 with NaOH (5 M), followed by an evaporation step which produced a purified solution rich in Ni (21.3 g Ni L− 1) and an iron hydroxide precipitate. The cold crystallization (T = 2 °C, t = 6 h) of this solution by the stoichiometric addition (× 1.2) of ammonium sulfate generates a Ni ammoniumdisulfate salt, containing 13.2% Ni, that is potentially valuable to industry.</div>
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<sourceDesc><biblStruct><analytic><title xml:lang="en">A new process for nickel ammonium disulfate production from ash of the hyperaccumulating plant Alyssum murale</title>
<author role="aut"><persName><forename type="first">R.</forename>
<surname>Barbaroux</surname>
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<author role="aut"><persName><forename type="first">G.</forename>
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<idno type="halAuthorId">109639</idno>
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<author role="aut"><persName><forename type="first">M.O</forename>
<surname>Simonnot</surname>
</persName>
<idno type="halAuthorId">106836</idno>
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<author role="aut"><persName><forename type="first">J.L.</forename>
<surname>Morel</surname>
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<idno type="halAuthorId">382990</idno>
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<author role="aut"><persName><forename type="first">J.F.</forename>
<surname>Blais</surname>
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<idno type="issn">0048-9697</idno>
<title level="j">Science of the Total Environment</title>
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<biblScope unit="volume">423</biblScope>
<biblScope unit="pp">111-119</biblScope>
<date type="datePub">2012</date>
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<textClass><keywords scheme="author"><term xml:lang="en">Alyssummurale</term>
<term xml:lang="en">Nickel</term>
<term xml:lang="en">Leaching</term>
<term xml:lang="en">Phytomining</term>
<term xml:lang="en">Metal hyperaccumulator</term>
<term xml:lang="en">Precipitation</term>
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<abstract xml:lang="en">The extraction of nickel (Ni) from ultramafic soils by phytomining can be achieved using Alyssummurale cultures. This study presents anewprocess for the valorization of Ni accumulated by this plant through the production of a Ni ammoniumdisulfate salt (Ni(NH4)2(SO4)2.6H2O). The process comprises an initial leaching of the ashes of A. murale with a sulphuric acid solution (1.9 M H2SO4, T = 95 °C, t = 240 min, TS = 150 g ash L− 1), producing a leachate rich in Ni (10.2 g Ni L− 1; 96% Ni solubilisation), Mg, P, K, Fe, Ca and Al. The pH of the acid leachate is increased to 5.0 with NaOH (5 M), followed by an evaporation step which produced a purified solution rich in Ni (21.3 g Ni L− 1) and an iron hydroxide precipitate. The cold crystallization (T = 2 °C, t = 6 h) of this solution by the stoichiometric addition (× 1.2) of ammonium sulfate generates a Ni ammoniumdisulfate salt, containing 13.2% Ni, that is potentially valuable to industry.</abstract>
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A new process for nickel ammonium disulfate production from ash of the hyperaccumulating plant Alyssum murale

A new process for nickel ammonium disulfate production from ash of the hyperaccumulating plant Alyssum murale

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