Purification and concentration of formic acid from formic acid/gluconic acid mixtures by two successive steps of nanofiltration and reactive liquid-liquid extraction

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dc.contributor.authorRoncal, Tomás
dc.contributor.authorLorenzo, Leire
dc.contributor.authorPrieto-Fernández, Soraya
dc.contributor.authorOchoa-Gómez, José R.
dc.contributor.institutionTecnalia Research & Innovation
dc.contributor.institutionBIOECONOMÍA Y CO2
dc.contributor.institutionGENERAL
dc.date.issued2022-04-01
dc.descriptionPublisher Copyright: © 2022 The Authors
dc.description.abstractA downstream process for the purification and concentration of formic acid (FA) from FA/gluconic acid (GA) mixtures, obtainable by a coupled biocatalytic reaction of CO2 reduction and glucose oxidation, has been developed. The process involved two technologies: i) a first nanofiltration (NF) step to separate FA and GA, and ii) a second reactive liquid-liquid extraction (RLLE) step to concentrate FA. The NF process, using a Synder NFX membrane, consisted of three NF steps separated into two divergent lines, named permeate and retentate pathways. The first NF was common for both pathways, resulting in a permeate strongly enriched in FA and depleted in GA, and a retentate with opposite characteristics. In the permeate pathway, this first permeate was subjected to a second NF to obtain a 99.6% pure FA permeate. In the retentate pathway, an additional NF step on the first retentate resulted in a concentrated 99.4% pure GA retentate. The final diluted FA permeate was concentrated by RLLE using tri-N-octylamine as extractant in n-octanol, and a final back-extraction with NaOH. The optimized RLLE process involved a 100-fold volume decrease and resulted in a final FA solution (as sodium formate) of 174.5 g/L, 78 times more concentrated than the feed.en
dc.description.statusPeer reviewed
dc.format.extent1
dc.format.extent3644842
dc.identifier.citationRoncal , T , Lorenzo , L , Prieto-Fernández , S & Ochoa-Gómez , J R 2022 , ' Purification and concentration of formic acid from formic acid/gluconic acid mixtures by two successive steps of nanofiltration and reactive liquid-liquid extraction ' , Separation and Purification Technology , vol. 286 , 120492 , pp. 120492 . https://doi.org/10.1016/j.seppur.2022.120492
dc.identifier.doi10.1016/j.seppur.2022.120492
dc.identifier.issn1383-5866
dc.identifier.otherresearchoutputwizard: 11556/1257
dc.identifier.urlhttp://www.scopus.com/inward/record.url?scp=85123380533&partnerID=8YFLogxK
dc.language.isoeng
dc.relation.ispartofSeparation and Purification Technology
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subject.keywordsFormic acid
dc.subject.keywordsGluconic acid
dc.subject.keywordsDownstream
dc.subject.keywordsNanofiltration
dc.subject.keywordsReactive liquid-liquid extraction
dc.subject.keywordsFormic acid
dc.subject.keywordsGluconic acid
dc.subject.keywordsDownstream
dc.subject.keywordsNanofiltration
dc.subject.keywordsReactive liquid-liquid extraction
dc.subject.keywordsAnalytical Chemistry
dc.subject.keywordsFiltration and Separation
dc.subject.keywordsSDG 13 - Climate Action
dc.subject.keywordsProject ID
dc.subject.keywordsinfo:eu-repo/grantAgreement/EC/H2020/761042/EU/BIOtechnological processes based on microbial platforms for the CONversion of CO2 from ironsteel industry into commodities for chemicals and plastics/BIOCONCO2
dc.subject.keywordsinfo:eu-repo/grantAgreement/EC/H2020/761042/EU/BIOtechnological processes based on microbial platforms for the CONversion of CO2 from ironsteel industry into commodities for chemicals and plastics/BIOCONCO2
dc.subject.keywordsFunding Info
dc.subject.keywordsThis work has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement No. 761042 (BIOCON-CO2).
dc.subject.keywordsThis work has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement No. 761042 (BIOCON-CO2).
dc.titlePurification and concentration of formic acid from formic acid/gluconic acid mixtures by two successive steps of nanofiltration and reactive liquid-liquid extractionen
dc.typejournal article
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