Author
Fukiko Kubota
Other affiliations: Japan Society for the Promotion of Science, Kyoto Institute of Technology
Bio: Fukiko Kubota is an academic researcher from Kyushu University. The author has contributed to research in topics: Extraction (chemistry) & Ionic liquid. The author has an hindex of 27, co-authored 106 publications receiving 2795 citations. Previous affiliations of Fukiko Kubota include Japan Society for the Promotion of Science & Kyoto Institute of Technology.
Topics: Extraction (chemistry), Ionic liquid, Alkyl, Membrane, Scandium
Papers published on a yearly basis
Papers
More filters
TL;DR: In this article, a supported liquid membrane (SLM) based on a task-specific ionic liquid was proposed to achieve the selective and facilitated CO2 transport through the membrane.
286 citations
TL;DR: In this article, the extraction of rare earth metals into ionic liquids (ILs) from aqueous solutions was investigated using octyl(phenyl)-N,N-diisobutylcarbamoylmethyl phosphine oxide (CMPO) as an extractant.
Abstract: Extraction of rare earth metals into ionic liquids (ILs) from aqueous solutions was investigated using octyl(phenyl)-N,N-diisobutylcarbamoylmethyl phosphine oxide (CMPO) as an extractant. Use of ILs greatly enhanced the extraction efficiency and selectivity of CMPO for metal ions compared to when n-dodecane was used as the extracting solvent. The extraction mechanism has been studied by slope analysis and extraction tests, and these confirmed that the metal extraction proceeds via a cation-exchange mechanism. Furthermore, stripping of metals from ILs into an aqueous phase by complexing agents and recycling of the extracting ILs phase was successfully accomplished.
261 citations
TL;DR: Octyl(phenyl)-N,N-diisobutylcarbamoylmethyl phosphine oxide dissolved in an ionic liquids, 1-butyl-3-methyl-imidazolium hexafluorophosphate, greatly enhances extractability and selectivity of lanthanide cations compared to that dissolved in conventional organic solvents.
Abstract: Octyl(phenyl)-N,N-diisobutylcarbamoylmethyl phosphine oxide (CMPO) dissolved in an ionic liquids, 1-butyl-3-methylimidazolium hexafluorophosphate, greatly enhances extractability and selectivity of lanthanide cations compared to that dissolved in conventional organic solvents; further, the recovery of lanthanides extracted into ionic liquids can be accomplished using several stripping solutions containing complexing agents The possibility of utilizing ionic liquids as novel separation media in an industrial liquid-liquid extraction process was demonstrated
231 citations
TL;DR: An effective recovery of the rare earth metals, Y, Eu, La and Ce, from the metal impurities, Fe, Al and Zn, was achieved from the acidic leach solution of phosphor powders using an ionic liquid containing DODGAA as novel extractant system.
219 citations
TL;DR: The present study succeeded, for the first time, in the selective separation of a targeted metal ion from an aqueous feed solution to a receiving phase within a few seconds by employing a liquid membrane formed in a microfluidic device.
Abstract: A three-phase flow, water/n-heptane/water, was constructed in a microchannel (100-μm width, 25-μm depth) on a glass microchip (3 cm × 7 cm) and was used as a liquid membrane for separation of metal ions. Surface modification of the microchannel by octadecylsilane groups induced spontaneous phase separation of the three-phase flow in the microfluidic device, which allows control of interfacial contact time and off-chip analysis using conventional analytical apparatus. Prior to the selective transport of a metal ion through the liquid membrane in the microchannel, the forward and backward extraction of yttrium and zinc ions was investigated in a two-phase flow on a microfluidic device using 2-ethylhexyl phosphonic acid mono-2-ethylhexyl ester (commercial name, PC-88A) as an extractant. The extraction conditions (contact time of the two phases, pH, extractant concentration) in the microfluidic device were examined. These investigations demonstrated that the conventional methodology for solvent extraction of ...
127 citations
Cited by
More filters
TL;DR: In this article, the authors review the leading CO2 capture technologies, available in the short and long term, and their technological maturity, before discussing CO2 transport and storage, as well as the economic and legal aspects of CCS.
Abstract: In recent years, Carbon Capture and Storage (Sequestration) (CCS) has been proposed as a potential method to allow the continued use of fossil-fuelled power stations whilst preventing emissions of CO2 from reaching the atmosphere. Gas, coal (and biomass)-fired power stations can respond to changes in demand more readily than many other sources of electricity production, hence the importance of retaining them as an option in the energy mix. Here, we review the leading CO2 capture technologies, available in the short and long term, and their technological maturity, before discussing CO2 transport and storage. Current pilot plants and demonstrations are highlighted, as is the importance of optimising the CCS system as a whole. Other topics briefly discussed include the viability of both the capture of CO2 from the air and CO2 reutilisation as climate change mitigation strategies. Finally, we discuss the economic and legal aspects of CCS.
1,752 citations
TL;DR: The state of the art in preprocessing of End-of-life materials containing rare-earth elements (REEs) and the final recovery is discussed in detail in this article, where the relevance of Life Cycle Assessment (LCA) for REE recycling is emphasized.
1,718 citations
TL;DR: Three of the leading options for large scale CO2 capture are reviewed from a technical perspective, including solvent-based chemisorption techniques, carbonate looping technology, and the so-called oxyfuel process.
Abstract: In this paper, three of the leading options for large scale CO2 capture are reviewed from a technical perspective. We consider solvent-based chemisorption techniques, carbonate looping technology, and the so-called oxyfuel process. For each technology option, we give an overview of the technology, listing advantages and disadvantages. Subsequently, a discussion of the level of technological maturity is presented, and we conclude by identifying current gaps in knowledge and suggest areas with significant scope for future work. We then discuss the suitability of using ionic liquids as novel, environmentally benign solvents with which to capture CO2. In addition, we consider alternatives to simply sequestering CO2—we present a discussion on the possibility of recycling captured CO2 and exploiting it as a C1 building block for the sustainable manufacture of polymers, fine chemicals, and liquid fuels. Finally, we present a discussion of relevant systems engineering methodologies in carbon capture system design.
1,349 citations
TL;DR: In this article, the authors proposed a novel process design that uses incoming combustion air as a sweep gas to generate driving force to reduce the cost of CO 2 capture from flue gas treatment.
1,329 citations
TL;DR: The application of ionic liquids in all areas of separation science including extractions, gas chromatography, and supported liquid membrane processes are highlighted.
Abstract: Ionic liquids are liquids composed completely of ions. In the past two decades, ionic liquids have been widely used as “green solvents” replacing traditional organic solvents for organic synthesis and catalysis. In addition, ionic liquids are playing an increasingly important role in separation science. In this Account, the application of ionic liquids in all areas of separation science including extractions, gas chromatography, and supported liquid membrane processes are highlighted.
957 citations