%0 Journal Article %1 ISI:000371419200013 %A Aimer, Matthias %A Klemm, Elias %A Langanke, Bernd %A Gehrke, Helmut %A Stubenrauch, Cosima %C POSTFACH 101161, 69451 WEINHEIM, GERMANY %D 2016 %I WILEY-V C H VERLAG GMBH %J CHEMISTRY-A EUROPEAN JOURNAL %K acid; costs; extraction; lactic manufacturing reactive region} structure; three-phase {bicontinuous %N 10 %P 3268-3272 %R 10.1002/chem.201503799 %T Reactive Extraction of Lactic Acid by Using Tri-n-octylamine: Structure of the Ionic Phase %V 22 %X Lactic acid is a promising biogenic platform chemical which can be produced by fermentation of cellulose and hemicellulose. However, separating lactic acid from the fermentation broth is extremely costly and technically complex. We therefore investigated whether liquid/liquid extraction of lactic acid with tri-n-octylamine is a cost-effective alternative to the existing downstream processing method. In order to find an answer to this question, the structure of the middle phase of the occurring three-phase region, which is enriched with up to 20wt.\% lactic acid, was explored. The results of our IR, small-angle X-ray scattering and NMR measurements show that this phase is ionic and has a bicontinuous structure. Due to the analogy with bicontinuous microemulsions, it should be possible to further enrich the lactic acid, which could lead to a rethink regarding the design of extraction processes.

@article{ISI:000371419200013, abstract = {{Lactic acid is a promising biogenic platform chemical which can be produced by fermentation of cellulose and hemicellulose. However, separating lactic acid from the fermentation broth is extremely costly and technically complex. We therefore investigated whether liquid/liquid extraction of lactic acid with tri-n-octylamine is a cost-effective alternative to the existing downstream processing method. In order to find an answer to this question, the structure of the middle phase of the occurring three-phase region, which is enriched with up to 20wt.\% lactic acid, was explored. The results of our IR, small-angle X-ray scattering and NMR measurements show that this phase is ionic and has a bicontinuous structure. Due to the analogy with bicontinuous microemulsions, it should be possible to further enrich the lactic acid, which could lead to a rethink regarding the design of extraction processes.}}, added-at = {2017-05-18T11:32:12.000+0200}, address = {{POSTFACH 101161, 69451 WEINHEIM, GERMANY}}, affiliation = {{Stubenrauch, C (Reprint Author), Univ Stuttgart, Inst Phys Chem, Pfaffenwaldring 55, D-70569 Stuttgart, Germany. Stubenrauch, Cosima, Univ Stuttgart, Inst Phys Chem, Pfaffenwaldring 55, D-70569 Stuttgart, Germany. Aimer, Matthias; Klemm, Elias, Univ Stuttgart, Inst Chem Technol, Pfaffenwaldring 55, D-70569 Stuttgart, Germany. Langanke, Bernd, ThyssenKrupp Ind Solut, Friedrich Uhde Str 15, D-44141 Dortmund, Germany. Gehrke, Helmut, ThyssenKrupp Ind Solut, Neubeckumer Str 127, D-59320 Ennigerloh, Germany.}}, author = {Aimer, Matthias and Klemm, Elias and Langanke, Bernd and Gehrke, Helmut and Stubenrauch, Cosima}, author-email = {{cosima.stubenrauch@ipc.uni-stuttgart.de}}, biburl = {https://puma.ub.uni-stuttgart.de/bibtex/2180585df84a0d7bbfdc04162e9f6c9a0/hermann}, doi = {{10.1002/chem.201503799}}, eissn = {{1521-3765}}, interhash = {b2950590ef17a2f8b1e57e845e3fbb55}, intrahash = {180585df84a0d7bbfdc04162e9f6c9a0}, issn = {{0947-6539}}, journal = {{CHEMISTRY-A EUROPEAN JOURNAL}}, keywords = {acid; costs; extraction; lactic manufacturing reactive region} structure; three-phase {bicontinuous}, keywords-plus = {{SELF-DIFFUSION; CITRIC-ACID; KINETICS; EQUILIBRIA; MICROEMULSIONS; FERMENTATION; NMR; ELECTRODIALYSIS; ALAMINE-336; AMINES}}, language = {{English}}, month = {{MAR 1}}, number = {{10}}, number-of-cited-references = {{42}}, pages = {{3268-3272}}, publisher = {{WILEY-V C H VERLAG GMBH}}, research-areas = {{Chemistry}}, times-cited = {{0}}, timestamp = {2017-05-18T09:32:12.000+0200}, title = {{Reactive Extraction of Lactic Acid by Using Tri-n-octylamine: Structure of the Ionic Phase}}, type = {{Article}}, volume = {{22}}, web-of-science-categories = {{Chemistry, Multidisciplinary}}, year = {{2016}} }