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Title: Application of nanofiltration for Rare Earth Elements recovery from coal fly ash leachate: Performance and cost evaluation

Abstract

Here 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.

Authors:
 [1];  [2]; ORCiD logo [2];  [2];  [1];  [1]
  1. Duke University, Durham, NC (United States)
  2. Polytechnic University of Milan (Italy)
Publication Date:
Research Org.:
Duke Univ., Durham, NC (United States)
Sponsoring Org.:
USDOE Office of Fossil Energy (FE); National Science Foundation (NSF); TUBITAK 2219-International Postdoctoral Research Fellowship
OSTI Identifier:
1614313
Alternate Identifier(s):
OSTI ID: 1548199
Grant/Contract Number:  
FE0026952; CBET-1510965
Resource Type:
Accepted Manuscript
Journal Name:
Chemical Engineering Journal
Additional Journal Information:
Journal Volume: 349; Journal Issue: C; Journal ID: ISSN 1385-8947
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; coal combustion residues; critical elements; membrane technology; response surface methodology; cost model

Citation Formats

Kose Mutlu, Borte, Cantoni, Beatrice, Turolla, Andrea, Antonelli, Manuela, Hsu-Kim, Heileen, and Wiesner, Mark R. Application of nanofiltration for Rare Earth Elements recovery from coal fly ash leachate: Performance and cost evaluation. United States: N. p., 2018. Web. doi:10.1016/j.cej.2018.05.080.
Kose Mutlu, Borte, Cantoni, Beatrice, Turolla, Andrea, Antonelli, Manuela, Hsu-Kim, Heileen, & Wiesner, Mark R. Application of nanofiltration for Rare Earth Elements recovery from coal fly ash leachate: Performance and cost evaluation. United States. https://doi.org/10.1016/j.cej.2018.05.080
Kose Mutlu, Borte, Cantoni, Beatrice, Turolla, Andrea, Antonelli, Manuela, Hsu-Kim, Heileen, and Wiesner, Mark R. Mon . "Application of nanofiltration for Rare Earth Elements recovery from coal fly ash leachate: Performance and cost evaluation". United States. https://doi.org/10.1016/j.cej.2018.05.080. https://www.osti.gov/servlets/purl/1614313.
@article{osti_1614313,
title = {Application of nanofiltration for Rare Earth Elements recovery from coal fly ash leachate: Performance and cost evaluation},
author = {Kose Mutlu, Borte and Cantoni, Beatrice and Turolla, Andrea and Antonelli, Manuela and Hsu-Kim, Heileen and Wiesner, Mark R.},
abstractNote = {Here 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.},
doi = {10.1016/j.cej.2018.05.080},
journal = {Chemical Engineering Journal},
number = C,
volume = 349,
place = {United States},
year = {Mon May 14 00:00:00 EDT 2018},
month = {Mon May 14 00:00:00 EDT 2018}
}

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Cited by: 52 works
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