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Modelling of the Extraction and Back-Extraction Equilibria of Zinc from Spent Pickling Solutions
This work reports the study of the chemical equilibria of the extraction and back-extraction of zinc from spent pickling solutions. Tributyl phosphate was used as a selective extractant and service water as a back extraction agent. Feed solutions had an average composition of 6.4 M Cl − , 1.2 M Zn +...
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Published in: | Separation science and technology 2006-04, Vol.41 (4), p.757-769 |
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container_title | Separation science and technology |
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creator | Samaniego, Henar San Román, M. Fresnedo Ortiz, Inmaculada |
description | This work reports the study of the chemical equilibria of the extraction and back-extraction of zinc from spent pickling solutions. Tributyl phosphate was used as a selective extractant and service water as a back extraction agent. Feed solutions had an average composition of 6.4 M Cl
−
, 1.2 M Zn
+2
, 1.7 M Fe
+2
and traces of other heavy metals i.e., Pb, Ni, Cu, Mn. Under the experimental conditions the ion ZnCl
4
2−
was the predominant zinc species in feed. A careful experimental design was performed obtaining the equilibria mathematical models and parameters, K
EX
=0.137 (mol/L)
−4
, and K
BEX
=1.46 [−]. |
doi_str_mv | 10.1080/01496390600552289 |
format | article |
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−
, 1.2 M Zn
+2
, 1.7 M Fe
+2
and traces of other heavy metals i.e., Pb, Ni, Cu, Mn. Under the experimental conditions the ion ZnCl
4
2−
was the predominant zinc species in feed. A careful experimental design was performed obtaining the equilibria mathematical models and parameters, K
EX
=0.137 (mol/L)
−4
, and K
BEX
=1.46 [−].</description><identifier>ISSN: 0149-6395</identifier><identifier>EISSN: 1520-5754</identifier><identifier>DOI: 10.1080/01496390600552289</identifier><language>eng</language><publisher>Taylor & Francis Group</publisher><subject>back-extraction ; Extraction equilibrium ; tributyl phosphate ; water ; zinc chloride</subject><ispartof>Separation science and technology, 2006-04, Vol.41 (4), p.757-769</ispartof><rights>Copyright Taylor & Francis Group, LLC 2006</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c408t-5ddfc6f7687f571ea81afec796a345d532d655a96b3f84f46ec395d43b6ae0ee3</citedby><cites>FETCH-LOGICAL-c408t-5ddfc6f7687f571ea81afec796a345d532d655a96b3f84f46ec395d43b6ae0ee3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids></links><search><creatorcontrib>Samaniego, Henar</creatorcontrib><creatorcontrib>San Román, M. Fresnedo</creatorcontrib><creatorcontrib>Ortiz, Inmaculada</creatorcontrib><title>Modelling of the Extraction and Back-Extraction Equilibria of Zinc from Spent Pickling Solutions</title><title>Separation science and technology</title><description>This work reports the study of the chemical equilibria of the extraction and back-extraction of zinc from spent pickling solutions. Tributyl phosphate was used as a selective extractant and service water as a back extraction agent. Feed solutions had an average composition of 6.4 M Cl
−
, 1.2 M Zn
+2
, 1.7 M Fe
+2
and traces of other heavy metals i.e., Pb, Ni, Cu, Mn. Under the experimental conditions the ion ZnCl
4
2−
was the predominant zinc species in feed. A careful experimental design was performed obtaining the equilibria mathematical models and parameters, K
EX
=0.137 (mol/L)
−4
, and K
BEX
=1.46 [−].</description><subject>back-extraction</subject><subject>Extraction equilibrium</subject><subject>tributyl phosphate</subject><subject>water</subject><subject>zinc chloride</subject><issn>0149-6395</issn><issn>1520-5754</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2006</creationdate><recordtype>article</recordtype><recordid>eNqFkN9LwzAQx4MoOKd_gG998q16bZq0AV90zB8wUZi--BKzNNG4ttmSFLf_3tb5IAwcHBzcfT4H30PoNIHzBAq4gCRjFDOgAISkacH20CAhKcQkJ9k-GvT7uAPIITry_hMACsLYAL092FJVlWneI6uj8KGi8So4IYOxTSSaMroWch7_mY2XranMzBnRC6-mkZF2to6mC9WE6MnI-c-xqa3anvfH6ECLyquT3z5ELzfj59FdPHm8vR9dTWKZQRFiUpZaUp3TItckT5QoEqGVzBkVOCMlwWlJCRGMzrAuMp1RJbswZYZnVChQCg_R2ebuwtllq3zgtfGyiyYaZVvPU0YodLUbBMwyYGkHJhtQOuu9U5ovnKmFW_MEeP90vvX0zrncOKbR1tXiy7qq5EGsK-u0E400nuP_9HynvmXxsAr4Gxbvmoo</recordid><startdate>20060401</startdate><enddate>20060401</enddate><creator>Samaniego, Henar</creator><creator>San Román, M. Fresnedo</creator><creator>Ortiz, Inmaculada</creator><general>Taylor & Francis Group</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7TV</scope><scope>C1K</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope></search><sort><creationdate>20060401</creationdate><title>Modelling of the Extraction and Back-Extraction Equilibria of Zinc from Spent Pickling Solutions</title><author>Samaniego, Henar ; San Román, M. Fresnedo ; Ortiz, Inmaculada</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c408t-5ddfc6f7687f571ea81afec796a345d532d655a96b3f84f46ec395d43b6ae0ee3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2006</creationdate><topic>back-extraction</topic><topic>Extraction equilibrium</topic><topic>tributyl phosphate</topic><topic>water</topic><topic>zinc chloride</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Samaniego, Henar</creatorcontrib><creatorcontrib>San Román, M. Fresnedo</creatorcontrib><creatorcontrib>Ortiz, Inmaculada</creatorcontrib><collection>CrossRef</collection><collection>Pollution Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Separation science and technology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Samaniego, Henar</au><au>San Román, M. Fresnedo</au><au>Ortiz, Inmaculada</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Modelling of the Extraction and Back-Extraction Equilibria of Zinc from Spent Pickling Solutions</atitle><jtitle>Separation science and technology</jtitle><date>2006-04-01</date><risdate>2006</risdate><volume>41</volume><issue>4</issue><spage>757</spage><epage>769</epage><pages>757-769</pages><issn>0149-6395</issn><eissn>1520-5754</eissn><abstract>This work reports the study of the chemical equilibria of the extraction and back-extraction of zinc from spent pickling solutions. Tributyl phosphate was used as a selective extractant and service water as a back extraction agent. Feed solutions had an average composition of 6.4 M Cl
−
, 1.2 M Zn
+2
, 1.7 M Fe
+2
and traces of other heavy metals i.e., Pb, Ni, Cu, Mn. Under the experimental conditions the ion ZnCl
4
2−
was the predominant zinc species in feed. A careful experimental design was performed obtaining the equilibria mathematical models and parameters, K
EX
=0.137 (mol/L)
−4
, and K
BEX
=1.46 [−].</abstract><pub>Taylor & Francis Group</pub><doi>10.1080/01496390600552289</doi><tpages>13</tpages></addata></record> |
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source | Taylor and Francis Science and Technology Collection |
subjects | back-extraction Extraction equilibrium tributyl phosphate water zinc chloride |
title | Modelling of the Extraction and Back-Extraction Equilibria of Zinc from Spent Pickling Solutions |
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