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Electroassisted leaching of black mass solids from Ni-Cd batteries for metal recovery: Investigation of transport and transfer phenomena coupled to reactions

Identifieur interne : 000072 ( Main/Exploration ); précédent : 000071; suivant : 000073

Electroassisted leaching of black mass solids from Ni-Cd batteries for metal recovery: Investigation of transport and transfer phenomena coupled to reactions

Auteurs : Claire Hazotte [France] ; Eric Meux [France] ; Nathalie Leclerc [France] ; François Lapicque [France]

Source :

RBID : Hal:hal-01266257

Abstract

Combined leaching of solid wastes to electrodeposition can be an attractive technique for their optimal beneficiation. In most investigations in the area, results are given in terms of energy consumption and selectivity, without thorough analysis of the rates of the various processes involved. The present investigation deals with the significance of transport and transfer phenomena involved in relation to reaction processes, in a cell combining electroassisted leaching to electrodeposition in view to designing treatment processes of manufactured wares after their end of life. The case of the so-called black mass of used Ni-Cd batteries has been considered here, for the separate productions of nickel salts and metal cadmium. First, leaching of the various hydroxides contained in the black mass has been studied either upon addition of acid or by electrochemical generation of H+. at the anode. Moreover, transport of the metal cations produced from the anode compartment to the cathode through the cloth acting as the separator has been investigated through a simple description of transport phenomena. Comparison and discussion of the various transport or reaction rates could show that ion transport through the porous separator could represent the rate-determining step.

Url:
DOI: 10.1016/j.cep.2015.08.004


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Le document en format XML

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<org type="institution" xml:id="struct-441569" status="VALID">
<idno type="ISNI">0000000122597504</idno>
<idno type="IdRef">02636817X</idno>
<orgName>Centre National de la Recherche Scientifique</orgName>
<orgName type="acronym">CNRS</orgName>
<date type="start">1939-10-19</date>
<desc>
<address>
<country key="FR"></country>
</address>
<ref type="url">http://www.cnrs.fr/</ref>
</desc>
</org>
</tutelle>
</tutelles>
</hal:affiliation>
<country>France</country>
<placeName>
<settlement type="city">Nancy</settlement>
<settlement type="city">Metz</settlement>
<region type="region" nuts="2">Grand Est</region>
<region type="old region" nuts="2">Lorraine (région)</region>
</placeName>
<orgName type="university">Université de Lorraine</orgName>
<placeName>
<settlement type="city">Nancy</settlement>
<region type="region" nuts="2">Grand Est</region>
<region type="region" nuts="2">Lorraine (région)</region>
</placeName>
<orgName type="laboratoire" n="5">Laboratoire réactions et génie des procédés</orgName>
<orgName type="university">Université de Lorraine</orgName>
<orgName type="institution">Centre national de la recherche scientifique</orgName>
</affiliation>
</author>
</analytic>
<idno type="DOI">10.1016/j.cep.2015.08.004</idno>
<series>
<title level="j">Chemical Engineering and Processing: Process Intensification</title>
<idno type="ISSN">0255-2701</idno>
<imprint>
<date type="datePub">2015-10</date>
</imprint>
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<front>
<div type="abstract" xml:lang="en">Combined leaching of solid wastes to electrodeposition can be an attractive technique for their optimal beneficiation. In most investigations in the area, results are given in terms of energy consumption and selectivity, without thorough analysis of the rates of the various processes involved. The present investigation deals with the significance of transport and transfer phenomena involved in relation to reaction processes, in a cell combining electroassisted leaching to electrodeposition in view to designing treatment processes of manufactured wares after their end of life. The case of the so-called black mass of used Ni-Cd batteries has been considered here, for the separate productions of nickel salts and metal cadmium. First, leaching of the various hydroxides contained in the black mass has been studied either upon addition of acid or by electrochemical generation of H+. at the anode. Moreover, transport of the metal cations produced from the anode compartment to the cathode through the cloth acting as the separator has been investigated through a simple description of transport phenomena. Comparison and discussion of the various transport or reaction rates could show that ion transport through the porous separator could represent the rate-determining step.</div>
</front>
</TEI>
<affiliations>
<list>
<country>
<li>France</li>
</country>
<region>
<li>Grand Est</li>
<li>Lorraine (région)</li>
</region>
<settlement>
<li>Metz</li>
<li>Nancy</li>
</settlement>
<orgName>
<li>Centre national de la recherche scientifique</li>
<li>Laboratoire réactions et génie des procédés</li>
<li>Université de Lorraine</li>
</orgName>
</list>
<tree>
<country name="France">
<region name="Grand Est">
<name sortKey="Hazotte, Claire" sort="Hazotte, Claire" uniqKey="Hazotte C" first="Claire" last="Hazotte">Claire Hazotte</name>
</region>
<name sortKey="Lapicque, Francois" sort="Lapicque, Francois" uniqKey="Lapicque F" first="François" last="Lapicque">François Lapicque</name>
<name sortKey="Leclerc, Nathalie" sort="Leclerc, Nathalie" uniqKey="Leclerc N" first="Nathalie" last="Leclerc">Nathalie Leclerc</name>
<name sortKey="Meux, Eric" sort="Meux, Eric" uniqKey="Meux E" first="Eric" last="Meux">Eric Meux</name>
</country>
</tree>
</affiliations>
</record>

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