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Mutlu, Borte Kose; Cantoni, Beatrice; Turolla, Andrea; Antonelli, Manuela; Hsu-Kim, Heileen; Wiesner, Mark R.
<?xml version='1.0' encoding='utf-8'?> <oai_dc:dc xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd"> <dc:creator>Mutlu, Borte Kose</dc:creator> <dc:creator>Cantoni, Beatrice</dc:creator> <dc:creator>Turolla, Andrea</dc:creator> <dc:creator>Antonelli, Manuela</dc:creator> <dc:creator>Hsu-Kim, Heileen</dc:creator> <dc:creator>Wiesner, Mark R.</dc:creator> <dc:date>2018-01-01</dc:date> <dc:description>This work evaluated nanofiltration (NF) as a potential step in the recovery process of Rare Earth Elements (REEs) from leachates of coal combustion fly ashes. A pre-treatment step, by pH adjustment and microfiltration (MF), has been studied to separate REEs by major elements. The individual and combined effects of applied pressure (12-24 bar) and NF feed acidity (pH 1.5-3.5) on rejection of six critical REEs and permeate flux have been investigated via response surface methodology (RSM). The resulting model equations were used to develop a cost model for the recovery chain, in order to select the optimum NF operating conditions. The optimization of the REE recovery chain, including pre-treatment and NF, was done with respect to the objective of maximizing the difference between NF concentrate economic value and treatment cost. NF with an appropriate MF pre-treatment has been effective in concentrating REEs from fly ash leachate, reaching the maximum potential gain at the optimum operating conditions of 12 bar and pH 3.5.</dc:description> <dc:identifier>https://aperta.ulakbim.gov.trrecord/36935</dc:identifier> <dc:identifier>oai:zenodo.org:36935</dc:identifier> <dc:rights>info:eu-repo/semantics/openAccess</dc:rights> <dc:rights>http://www.opendefinition.org/licenses/cc-by</dc:rights> <dc:source>CHEMICAL ENGINEERING JOURNAL 349 309-317</dc:source> <dc:title>Application of nanofiltration for Rare Earth Elements recovery from coal fly ash leachate: Performance and cost evaluation</dc:title> <dc:type>info:eu-repo/semantics/article</dc:type> <dc:type>publication-article</dc:type> </oai_dc:dc>
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