样式: 排序: IF: - GO 导出 标记为已读
-
Equilibrium Data and Correlation with Redefined NRTL Equation of Aqueous Two-phase Systems Based on 1,4-Bis-(2-hydroxyethyl)-piperazine and Na2SO4 Solvent Extr. Res. Dev. (IF 0.7) Pub Date : 2023-05-26 Tingting WANG, Hanchen XU, Zhengzhi ZHENG, Peng CHEN
Aqueous two-phase system (ATPS) is considered a new method to remove heat stable salts (HSS) from flue gas desulfurizer 1,4-bis-(2-hydroxyethyl)-piperazine (BHEP). In this work, the liquid-liquid phase equilibrium data of BHEP-Na2SO4 ATPS in 303.15 – 323.15 K were measured and correlated by NRTL equation with the redefined adjustable characteristic constant at different concentrations. It is revealed
-
Clean and Efficient Utilization of Symbiotic Elements in Wet-Process Phosphoric Acid: Study on High-Value Process of Aluminum Solvent Extr. Res. Dev. (IF 0.7) Pub Date : 2023-05-26 Qinglie ZHOU, Baoqi WANG, Honggang ZHEN, Chao HU, Lin YANG, Xinlong WANG, Zhiye ZHANG
In the production of high-purity industrial phosphoric acid by wet process, the symbiotic elements are often treated as solid or liquid waste. This causes a waste of natural resources. In this work, a new wet-process phosphoric acid (WAP) purification route was proposed. In particular, the regeneration process of extractant was optimized, and the recovery process of aluminum was studied in detail (including
-
Extraction Behavior of Lanthanoids(III) with Bis(2-ethylhexyl)phosphoric Acid into Ionic Liquid 1-Butyl-3-methylimidazolium Bis(trifluoromethanesulfonyl)imide Solvent Extr. Res. Dev. (IF 0.7) Pub Date : 2023-05-26 Takafumi MATSUTANI, Shoichi KATSUTA
The extraction behavior of 14 trivalent lanthanoids (Lns) with bis(2-ethylhexyl)phosphoric acid (HR) into a typical hydrophobic ionic liquid (IL), 1-butyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide, was investigated. The extraction is so slow that a shaking time of more than 36 hours is needed to reach extraction equilibrium. Compared to the extraction system using toluene as an extraction
-
Extraction of Au(III) Using Aromatic Ketones in Acidic Chloride Media Solvent Extr. Res. Dev. (IF 0.7) Pub Date : 2023-05-26 Tatsuya OSHIMA, Kota MIYAKE, Mai HASHIZUME, Asuka INADA
Recently, the extraction of Au(III) using the series of aliphatic ketones in hydrochloric acid media has been investigated in detail. The present study describes the extraction behaviors of Au(III) using a series of aromatic ketones, which has never been reported. Aromatic ketones with shorter alkyl side chains showed higher extractability. The rapid extraction and the extraction capacity using aromatic
-
Solvent Extraction of Copper and EDTA in Electroless Copper Plating Wastewater Using a Quaternary Ammonium Salt Solvent Extr. Res. Dev. (IF 0.7) Pub Date : 2023-05-26 Hiroaki HABAKI, Kenta MIZUNO, Ryuichi EGASHIRA
To separate both copper and 2,2',2'',2'''-(ethane-1,2-diyldinitrilo)tetraacetic acid (EDTA) from the waste electroless copper plating solution by solvent extraction, the liquid–liquid equilibria of the copper-EDTA complex and unbound EDTA ion were experimentally measured. An organic solution of tri-n-octylmethylammonium chloride (TOMACl) was used as solvent. The kerosene solution of TOMACl could extract
-
Effect of Hydrophobicity of Ionic Liquids on the Leaching Selectivity of Platinum from a Spent Automotive Catalyst Solvent Extr. Res. Dev. (IF 0.7) Pub Date : 2023-05-26 Takafumi HANADA, Sayako TAKAOKA, Mayu KAMISONO, Adroit T. N. FAJAR, Masahiro GOTO
Recycling platinum group metals from secondary resources such as spent automotive exhaust catalysts is promising for the circular economy. However, the selective separation of Pt over massive amounts of impurity metals such as Mg and Al is particularly challenging. In this study, non-aqueous direct leaching of platinum from a spent automotive catalyst (SAC) using hydrophobic ionic liquids, namely,
-
Flow Characteristics and Mass-Transfer in Droplet Layer Formed in an Emulsion-Flow Column by Using Extraction of Iodine from Organic Phase Solvent Extr. Res. Dev. (IF 0.7) Pub Date : 2023-05-26 Kaoru AKAHOSHI, Mikiro HIRAYAMA, Ming ZHANG, Takashi GOSHIMA, Kei MIZUTA, Susumu NII
The novel extraction method called "emulsion-flow" is characterized by using a layer of accumulated droplets in the column to supply both phases in the form of droplets. To clarify the flow behavior of both phases in the layer, extraction of iodine from organic to aqueous phase was carried out to enhance visibility of organic phase with the help of iodine. In addition, the mass-transfer in the organic
-
Effective Production of Paclitaxel and the Related Taxanes in a Plant Cell Culture by in situ Extraction with Sequential Refreshment of Water-Immiscible 1-Butyl-1- methylpyrrolidinium Bis(trifluoromethanesulfonyl)imide Solvent Extr. Res. Dev. (IF 0.7) Pub Date : 2023-05-26 Daiki NAGATA, Waka NISHIKAWA, Yuka IZAKI, Shinjiro YAMAMOTO, Shuhei HAYASHI, Hitoshi MIYASAKA
We report here the sequential refreshment of a water-immiscible ionic liquid, 1-butyl-1-methylpyrrolidinium bis(trifluoromethanesulfonyl)imide (P14TFSI) enhanced the production amount of paclitaxel and the related taxanes with in situ extraction from an aqueous medium in a plant cell culture. The production amount of the taxanes with refreshment of 2.5 vol% P14TFSI twice every 2 days was three times
-
Up-Hill Transport of Tryptophan through Polymer Inclusion Membrane Containing Aliquat 336 Solvent Extr. Res. Dev. (IF 0.7) Pub Date : 2023-05-26 Michiaki MATSUMOTO, Noritake KITA, Yoshiro TAHARA
Tryptophan, which is an essential amino acid, is used as a nutrient enhancer, a preservative, and a feed additive. Development of a cost-effective and straightforward separation technique is still required to extract and purify tryptophan in the bioproduction processes. We conducted permeation of tryptophan through poly(vinyl chloride)-based membrane containing Aliquat 336 as a carrier. Tryptophan
-
Aqueous Two-phase System Separation of Heat-Stable Salt Ions in Flue Gas Desulfurizer Solvent Extr. Res. Dev. (IF 0.7) Pub Date : 2023-03-23 Zhengzhi ZHENG, Shaojun JIA, Xiangying CHEN, Peng CUI
The heat-stable salts (HSS) in flue gas desulfurizer 1,4-bis-(2-hydroxypropyl)-piperazine (HPP) are separated by HPP forming an aqueous two-phase system (ATPS) with Na2SO4, which is the main component of HSS. In this work, SO42–, NO3–, Cl–, K+, PO43– and SO32– were selected to study the separation performance in the HPP+Na2SO4 ATPS. The results indicate that the partition coefficients of the above
-
Kinetics of Extraction of Boric Acid by 2,2,4-Trimethyl-1,3-pentanediol Using Lewis Cell Solvent Extr. Res. Dev. (IF 0.7) Pub Date : 2023-03-23 Xiaowu PENG, Dong SHI, Lianmin JI, Yuze ZHANG, Licheng ZHANG, Lijuan LI
The extraction kinetics of forward extraction of boron by 2,2,4-trimethyl-1,3-pentanediol (TMPD) were investigated, using a Lewis cell. Factors affecting the extraction rate, including stirring speed, concentrations (TMPD and B(OH)3), interfacial area, and temperature were examined. Results indicated that the extraction rate is controlled by chemical reaction at interface. The activation energy Ea
-
Evaluation of Selectivity of Rare Earth Metals by Hexane-1,6-diyl bis(4,4,4-trifluoro-3-oxobutanoate) Solvent Extr. Res. Dev. (IF 0.7) Pub Date : 2023-03-23 Shuhei TAKASE, Satomi MAKINO, Tatsuya MORIAI, Tetsuto KAJIYAMA, Satoshi OHMURO, Nobutoshi YOSHIHARA, Hisao KOKUSEN
Using hexane-1,6-diyl bis (4,4,4-trifluoro-3-oxobutanoate) (H2hdfob), the mechanism for extracting rare earth metal ions to the organic phase was evaluated. From slope analysis, it was clarified that one divalent metal hydroxide ion reacts with two H2hdfob where one of the protons is dissociated from each ligand. Such a complexation formed the 1 : 2 metal–ligand neutral complex. Such a complex formation
-
Synthesis of Crosslinked Poly(Vinylphosphonic Acid) Particles by Water-in-Oil (W/O) Suspension Polymerization Method and Their Adsorption Properties of Metal Ions Solvent Extr. Res. Dev. (IF 0.7) Pub Date : 2023-03-23 Benny Rio FERNANDEZ, Satoshi TSUKAHARA
Crosslinked poly(vinylphosphonic acid) (PVPA) particles were successfully synthesized from vinylphosphonic acid and a crosslinker by water-in-oil (W/O) suspension polymerization using three silicone oils. The structure, morphology, and size of the PVPA particles were confirmed by Fourier transform infrared spectroscopy, scanning electron microscopy, and optical microscopy. The surface of the spherical
-
Extraction Properties of Trivalent Rare Earth Ions from Nitric Acid Using a Triamide–Amine Extractant Solvent Extr. Res. Dev. (IF 0.7) Pub Date : 2023-03-23 Seiko UCHINO, Hirokazu NARITA, Keisuke KITA, Hideya SUZUKI, Tatsuro MATSUMURA, Hirochika NAGANAWA, Koichi SAKAGUCHI, Keisuke OHTO
The extraction of trivalent rare earth ions (RE3+) from HNO3 solution using a triamide amine, tris(N,N-di-2-ethylhexyl-ethylamide)amine (DEHTAA), was conducted, and the extraction mechanism was estimated from extraction behavior of HNO3 and RE3+. A DEHTAA molecule dominantly formed a DEHTAA⸱HNO3 at 1.0 M HNO3 and a DEHTAA⸱(HNO3)2 at 6.0 M HNO3 in the acid-equilibrated organic phase. This would provide
-
Extraction of Seleno-Amino Acids from Cardamine Hupingshanensis by Ultrasonic Assisted Deep Eutectic Solvents Extraction Solvent Extr. Res. Dev. (IF 0.7) Pub Date : 2023-03-23 Xiaoxiao LIU, Wenqing ZHANG, Tiantian FEI, Xiaosong HU, Zhongli HU, Surong JIN
In this work, deep eutectic solvent (DES) combined with ultrasonic-assisted extraction was proposed to extract free seleno-amino acids from Cardamine hupingshanensis. The contents of seleno-amino acids in the extract were determined by high-performance liquid chromatography with a fluorescence detector (HPLC-FLD). Response surface design was used to optimize the extraction conditions such as ultrasonic
-
Extraction of Metal Ions Using a Calix[4]arene Carboxylic Acid Derivative in Aromatic Ethers Solvent Extr. Res. Dev. (IF 0.7) Pub Date : 2023-03-23 Tatsuya OSHIMA, Tokiya ASANO, Tatsuya ISHIBASHI, Kaoru OHE, Keisuke OHTO, JUMINA
If calixarenes can be dissolved in a relatively safe non-halogen solvent, they can be used in a liquid-liquid extraction process suitable for mass processing. In the present study, extraction behavior of metal ions using a calix[4]arene carboxylic acid derivative (tOct[4]CH2COOH) dissolved in aromatic ethers was investigated. The solubility of tOct[4]CH2COOH in aromatic ethers decreases with increase
-
Separation and Recovery of Sc(III) and Y(III) from Aqueous Acidic Media with N-Lauroylsarcosine Solvent Extr. Res. Dev. (IF 0.7) Pub Date : 2023-03-23 Marina MATSUMOTO, Shintaro KANEMARU, Yoshinari BABA, Kazuhiro SUGAMOTO
In this study, the selective extraction and mutual separation of Sc(III) and Y(III) from Ni(II), Co(II) and Mn(II) in acidic media were performed with N-lauroylsarcosine (NLS) in toluene. The experimental results were quantitatively analyzed using the conventional slope analysis method. This method reasonably elucidated reasonably the extraction equilibrium formulation of these metals with LNS. Isostearic
-
Variation of Extraction Yield and Droplet Size during Emulsification Solvent Extraction of Wet-Process Phosphoric Acid Solvent Extr. Res. Dev. (IF 0.7) Pub Date : 2023-03-23 Yuqing CAO
This research focuses on emulsification solvent extraction for purifying wet-process phosphoric acid. The effects of various parameters, including stirring speed, phase ratio and emulsification time on the extraction yield and droplet size distribution were investigated. The optimal conditions were determined. The influence of time and physical properties of solvent on average droplet diameter was
-
A Stepwise Solvent Extraction Process for Recovering Yttrium from Sulphate Leach Solutions of Deep-sea Mud Solvent Extr. Res. Dev. (IF 0.7) Pub Date : 2022-04-25 Kuifang ZHANG, Xiaocong ZHONG, Jinzhang TAO, Ruixiang WANG, Zhiqiang LIU
A novel approach for recovering yttrium from high ferric and strong acidic sulphate leach solutions of deep-sea mud by stepwise extraction and stripping has been developed. The results show that the first step extraction by N235+TBP system can extract H2SO4 well and adjust the raffinates to a desirable pH, while only the iron was selectively co-extracted with negligible loss of yttrium ions. The organic
-
Kinetics of Co(II) Extraction in Co(II) -SO42-( H+, Na+)-[C8H17NH3][Cyanex 272]-sulfonated Kerosene System Using the Single Drop Falling Technique Solvent Extr. Res. Dev. (IF 0.7) Pub Date : 2022-04-25 Xiaohua JING, Zhumei SUN, Dandan ZHAO, Donghui PAN, Yage ZHANG, Yu ZHANG
In this research, the kinetics of Co(II) extraction from sulfate medium by the system of “[C8H17NH3][Cyanex 272]+diluent sulfonated kerosene” were investigated using the single drop falling technique. The time of drop formation and coalescence was determined for calculating the Co(II) transfer flux. The influences of aqueous pH, Co(II) concentration and [C8H17NH3][Cyanex 272] concentration on the revised
-
Extraction Behavior of Metal-Thiocyanato Complexes into Third Phase Formed in an Ionic Liquid Extraction System Using Trioctylphosphine Oxide Solvent Extr. Res. Dev. (IF 0.7) Pub Date : 2022-04-25 Mizuki TOITA, Kotaro MORITA, Naoki HIRAYAMA
In 1-butyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide (C4mimTf2N)–water biphasic extraction system, a tiny volume of third phase is formed under existing trioctylphosphine oxide (TOPO). To study possible use of the third phase as extraction concentration media, extraction behavior of several metal-thiocyanato complexes into the third phase was investigated. Fe(III) and Ga(III) complexes
-
Extraction of 1,3-Propanediol with Aqueous Two-Phase Systems Formed by Protic Ionic Liquids and Inorganic Salts Solvent Extr. Res. Dev. (IF 0.7) Pub Date : 2022-04-25 Michiaki MATSUMOTO, Fumiya SHINJI, Yoshiro TAHARA
Extraction of 1,3-propanediol (PDO) was reported using the protic ionic liquid (PIL)-based aqueous two-phase system (ATPS). In this study, combinations of PILs (pyrrolidinium formate [Pyrr][HCOO] and propionate [Pyrr][C2H5COO] and inorganic salts (K3PO4 and K2HPO4) as phase-forming components of ATPS, were examined. PDO was successfully extracted with all ATPSs and the best extractability was shown
-
Production of Paclitaxel in a Plant Cell Culture by In Situ Extraction with Sequential Refreshment of Water-Immiscible 1-Butyl-1-methylpyrrolidinium Bis(trifluoromethanesulfonyl)imide Solvent Extr. Res. Dev. (IF 0.7) Pub Date : 2022-04-25 Shinjiro YAMAMOTO, Yurina MURAKAMI, Shuhei HAYASHI, Hitoshi MIYASAKA
We report here the effect of sequential refreshment of a water-immiscible ionic liquid, 1-butyl-1-methylpyrrolidinium bis(trifluoromethanesulfonyl)imide (P14TFSI), enhancing the production amount of paclitaxel with in situ extraction from an aqueous medium in a plant cell culture. The production amount of paclitaxel with refreshment of 2.5 vol% P14TFSI twice every 2 days was 8 times greater than that
-
Yttrium Recovery Process from Leaching Solution of Spent Ni-MH Batteries Using Coprecipitation and Solvent Extraction Solvent Extr. Res. Dev. (IF 0.7) Pub Date : 2022-04-25 Masatoshi TAKANO, Satoshi ASANO, Masahiro GOTO
In this study, we investigated an efficient recovery method of yttrium from a sulfuric acid leaching solution of spent Ni-MH battery electrode materials. In this newly proposed method, yttrium, one of the heavy rare earths (HREEs), was coprecipitated with light rare earths (LREEs) in the preliminary crude separation, and the residual yttrium was precisely recovered by solvent extraction using di-(2-ehylhexyl)
-
Extraction of Trivalent Rare Earth Ions with an Acidic Tridentate Extractant, 6-N,N-Di-n-Octylcarbamoyl-Pyridine-2-Carboxylic Acid Solvent Extr. Res. Dev. (IF 0.7) Pub Date : 2022-02-15 Hirokazu NARITA, Mikiya TANAKA
Extraction properties of trivalent rare earth ions (RE(III)) from acidic chloride solutions with 6-N,N-di-n-octylcarbamoyl-pyridine-2-carboxylic acid (CPCA), which has three functional groups: an amide, a carboxylic acid and a pyridine, were investigated by slope analyses of the distribution ratio (D) of RE(III) and FT-IR measurements. The dependence of D on pH and CPCA concentration indicated that
-
Ultrasound-Assisted Micro-Channel Extraction of Magnesium from Wet-Process Phosphoric Acid Solvent Extr. Res. Dev. (IF 0.7) Pub Date : 2022-02-15 Qi XIA, Jiangpo ZHANG, Xiaofeng HONG, Jianjun CHEN, Daijun LIU
A new extractant PN-1 was synthesized, and an ultrasound-assisted micro-channel extraction (UAME) system was developed for the extraction of magnesium from wet-process phosphoric acid (WPA). The effects of O/A ratio, P2O5 content, initial pH, ultrasound power, and aqueous phase ratio on extraction were investigated. The extraction efficiency of Mg2+ could reach 89.09% under the conditions of 74 W ultrasound
-
Permeation Process of Metal Complexes with Hydroxyoxime and Carboxylic Acid Extractants through Organic-Aqueous Interface Solvent Extr. Res. Dev. (IF 0.7) Pub Date : 2022-02-15 Yasutaka NISHIHARA
Permeation process of the cobalt(II) (Co) complexes of the hydroxyoxime extractant, LIX63 and/or of the carboxylic acid extractant, Versatic Acid 10 (VA10), through the interface between cyclohexane and water layers was investigated using a hybrid Monte Carlo/Molecular Dynamics (MC/MD) method where MC and MD were performed for coordination reactions probabilistically and molecule movements on short
-
Extraction of Co(II), Ni(II), Cu(II) and Mn(II) with Deep Eutectic Solvents Dissolved in Heptane as Extractants Solvent Extr. Res. Dev. (IF 0.7) Pub Date : 2022-02-15 Pius Dore OLA, Yusuke KUROBE, Michiaki MATSUMOTO
Recovering, removing, or concentrating metal ions from wastewater containing metal ions is critical because a negative impact can be generated on living organisms by metal-contained wastewater, which contains high concentration of metals, when it is discarded into the environment without pretreatment. In this work we used deep eutectic solvents (DESs) dissolved in heptane as extractants to separate
-
Solvent Extraction of Cesium Using DtBuDB18C6 into Various Organic Solvents Solvent Extr. Res. Dev. (IF 0.7) Pub Date : 2021-06-06 Yuji SASAKI, Keisuke MORITA, Yoshihiro KITATSUJI, Keisuke ITO, Kazuharu YOSHIZUKA
High concentration of Cs is present in high-level radioactive waste. It is well-known that Cs is an alkali element and difficult to extract completely into an organic phase. Crown ether compounds are widely available for Cs extractants; DtBuDB18C6 (di-t-butyl-dibenzo-18crown6), was used in this study. Organic solvents used for the industrial applications, such as n-dodecane and 1-octanol, have low
-
Crystallization of Palladium(II)-Pyridylazophenol Complex at the Liquid-Liquid Interface Solvent Extr. Res. Dev. (IF 0.7) Pub Date : 2021-06-06 Akira OHASHI, Takafusa KIMINARITA
The crystallization of the palladium(II) complex with 2-(5-bromo-2-pyridylazo)-5-diethylaminophenol (HL) at the liquid-liquid interface was investigated in the heptane-toluene mixture/water system. Interfacial crystallization of PdLCl did not occur in the heptane/water system, whereas it occurred in the heptane-toluene mixture/water system. The crystal size distribution of PdLCl formed at the liquid-liquid
-
Extraction of Proteins with Aqueous Two-Phase Systems Formed by Protic Ionic Liquids and Inorganic Salts Solvent Extr. Res. Dev. (IF 0.7) Pub Date : 2021-06-06 Michiaki MATSUMOTO, Fumiya SHINJI, Yoshiro TAHARA
A protein extraction and separation has been reported using the ionic liquid (IL)-based aqueous two-phase system (ATPS). Although ILs have many benefits, there was a problem of unfavorable physical properties such as high viscosity, or high-cost production of ILs. Recently protic ionic liquids (PILs) are emerging as an alternative to conventional ionic liquids. PILs are easily produced through a reaction
-
House Microwave-Assisted Solid Phase Extraction for Residual 17α-Methyltestosterone Determination in Nile Tilapia Tissues by High-Performance Liquid Chromatography Solvent Extr. Res. Dev. (IF 0.7) Pub Date : 2021-06-06 Kawin KHACHORNSAKKUL, Sudtida Pliankarom THANASUPSIN, Wijitar DUNGCHAI
An effective sample preparation procedure using a house microwave-assisted extraction (hMAE) procedure, followed by cleaning with solid-phase extraction (SPE) by using HPLC with general UV-visible spectrometry was developed for residual 17α-methyltestosterone (MT) determination in Nile tilapia tissues. Our developed method showed a wide linear range from 25 to 800 ng g-1 with R2 as 0.9985 and presented
-
Recovery of Cobalt and Manganese from Spent Lithium-ion Batteries using a Phosphonium-based Ionic Liquid Solvent Extr. Res. Dev. (IF 0.7) Pub Date : 2021-01-01 Mochmad L. FIRMANSYAH,Adroit T. N. FAJAR,Rino R. MUKTI,Thalabul ILMI,Grandprix T. M. KADJA,Masahiro GOTO
-
Solvent Extraction of Copper Enhanced by Mixing Cavities in Micromixer Solvent Extr. Res. Dev. (IF 0.7) Pub Date : 2021-01-01 Abdul Rauf SHEIK,Amol A KULKARNI,Kali SANJAY
-
Characterization of Water/Organic Biphasic System in Liquid-Liquid Slug Flow under Hydrothermal Conditions: Solvation, Vorticity, and Hydrophobicity Solvent Extr. Res. Dev. (IF 0.7) Pub Date : 2021-01-01 Toshinori SHIMANOUCHI,Satoko FUJIOKA,Tatsuya TANIFUJI,Kenta YAMAMOTO,Koichi TERASAKA,Yukitaka KIMURA
-
Enhancement of Paclitaxel Production in Plant Cell Culture Including Increased Amount of Water-immiscible 1-Butyl-1-methylpyrrolidinium Bis(trifluoromethanesulfonyl)imide Solvent Extr. Res. Dev. (IF 0.7) Pub Date : 2021-01-01 Shinjiro YAMAMOTO,Yumi KAMIKUBO,Hiroki TANOUE,Michinari IWASAKI,Shuhei HAYASHI,Hitoshi MIYASAKA
-
Complexation Studies of Eu(III) by a Novel Soft N and Hard O Donor Combined Ligand Including N,N,N',N'-Tetrakis(2-pyridylmethyl)-1,3-diaminopropane-2-amide Structure: UV-vis Titration, X-ray Crystallography, EXAFS Spectroscopy Analysis Solvent Extr. Res. Dev. (IF 0.7) Pub Date : 2021-01-01 Hao WU,Masahiko NAKASE,Yusuke INABA,Miki HARIGAI,Tohru KOBAYASHI,Tsuyoshi YAITA,Kenji TAKESHITA,Seong-Yun KIM
-
Selective Separation of Trivalent Europium(III) from Americium(III) using N,N′Dimethyl-N,N′-di-2-phenylethyl-diglycol Amide (MPEDGA) Extractant in Ionic Liquid Solvent Extr. Res. Dev. (IF 0.7) Pub Date : 2021-01-01 Seong-Yun KIM,Tadayuki TAKAHASHI,Hao WU
-
In Situ Fluorescence Microscope Measurements of the Phase Transfer Dynamics of Single DNA Molecular Ions with Dimethyldioctadecylammonium Chloride into Isooctane–1-Octanol Mixture Solvent Extr. Res. Dev. (IF 0.7) Pub Date : 2021-01-01 Satoshi TSUKAHARA,Shohei INOSHITA,Terufumi FUJIWARA
-
Separation of Fe(III) and Al via Tributyl Phosphate and 2-Octanol in the Comprehensive Recovery Process of Metals from Hydrochloric Acid Leaching Solution of Fly Ash Solvent Extr. Res. Dev. (IF 0.7) Pub Date : 2021-01-01 Xiaozhou ZHOU,Yujun SHEN,Jun PENG,Qiang LIU
-
Solubilities of Palladium(II) β-Diketonates (β-Diketonate = Acetylacetonate, Trifluoroacetylacetonate, Thenoyltrifluoroacetonate) in Supercritical Carbon Dioxide Solvent Extr. Res. Dev. (IF 0.7) Pub Date : 2021-01-01 Akira OHASHI,Azusa FUKUTANI,Yuka TAMAOKI
-
Axial Mixing in Emulsion-flow Column under Iodine Extraction Solvent Extr. Res. Dev. (IF 0.7) Pub Date : 2021-01-01 Mikiro HIRAYAMA,Takashi GOSHIMA,Kei MIZUTA,Susumu NII
-
Kinetics and Mechanism on Removal of Aluminum from Phosphoric Medium by Solvent Extraction using Lewis Cells Solvent Extr. Res. Dev. (IF 0.7) Pub Date : 2021-01-01 Xuefang YAN,Haibo ZHUANG,Ye WANG,Xinlong WANG,Zhiye ZHANG,Lin YANG
-
Recovery of Neodymium from Waste Permanent Magnets by Hydrometallurgy Using Hollow Fibre Supported Liquid Membranes Solvent Extr. Res. Dev. (IF 0.7) Pub Date : 2020-12-11 Achmad Chusnun NI’AM, Yi-Hsien LIU, Ya-Fen WANG, Shyh-Wei CHEN, Gen-Mu CHANG, Sheng-Jie YOU
The recycling of the rare earth neodymium (Nd) is vital to providing greener technology for many industries. In this paper its recovery from waste permanent magnets (WPMs) is explored using a hydrometallurgical process involving separation using hollow fiber supported liquid membranes (HFSLMs). After demagnetization, the options for WPMs leaching were investigated by varying mineral acids, acid concentrations
-
Effect of Diglycolamide Ligands Structure on Extraction Performance of Heavy Rare Earth Ions Solvent Extr. Res. Dev. (IF 0.7) Pub Date : 2020-12-11 Huihui DU, Xiujing PENG, Yu CUI, Guoxin SUN
The properties of four different extractants, TODGA (N,N,N',N'-tetraoctyl-diglycolamide), T2EHDGA (N,N,N',N'-tetraisooctyl-diglycolamide), DPDODGA (N,N'-dipropyl-N,N'-dioctyl-diglycolamide) and DIPDODGA (N,N'-diisopropyl-N,N'-dioctyl-diglycolamide), to extract heavy rare earth metal ions in hydrochloric acid were studied to understand the relationship between the chemical structure of the extractant
-
Separation and Recovery of Scandium and Yttrium from Aqueous Chloride Media by Integrated Ion Exchange Method Solvent Extr. Res. Dev. (IF 0.7) Pub Date : 2020-12-11 Jeong-Yi MOON, Chiaki TAKAJO, Syouhei NISHIHAMA, Kazuharu YOSHIZUKA
Separation of scandium (Sc) and yttrium (Y) using solvent-impregnated resin (SIR) containing bis(2,4,4-trimethylpentyl)phosphinic acid (Cyanex 272) along with 1-octanol as a modifier was investigated. 1-Octanol was added to enhance stripping efficiency, since stripping of heavy rare earths from the organic solution containing organophosphorus extractants is difficult. The coated SIR was applied to
-
Selective Extraction of In(III) and Ga(III) Using N-Lauroylsarcosine (NLS) Solvent Extr. Res. Dev. (IF 0.7) Pub Date : 2020-12-11 Takahiro ITO, Shintaro KANEMARU, Tsutomu SHIRAGAMI, Yoshinari BABA
In(III) and Ga(III) are included in zinc refining, the wastes of solar panel and electronics and so on. In solvent extraction which is a useful method of separation of metals, we used N-lauroylsarcosine (NLS), containing tertiary amine which is alkyl amide derivative with the sarcosine moiety in the molecule structure in order to separate and recover these metal ions. We studied about the extraction
-
Cloud Point Extraction and Fluorometric Analysis of Eu(III) with Thenoyltrifluoroacetone and the Nonionic Surfactant Triton X-114 Solvent Extr. Res. Dev. (IF 0.7) Pub Date : 2020-12-11 Yoshiko MURAKAMI, Ayami NAKAO, Isamu FUJIWARA, Shoji TAGASHIRA
The extraction of the Eu(III) thenoyltrifluoroacetone (TTA) chelate was investigated by using the nonionic surfactant octylphenoxypolyethoxyethanol (Triton X-114, n = 8). A cloud point extraction (CPE) method is proposed for the preconcentration of Eu(III) and subsequent determination was carried out by a fluorometric method using a microwell plate reader. Optimal experimental conditions were examined
-
Analysis of the Partitioning Behavior of Horseradish Peroxidase to Phospholipid and Surfactant Membranes Solvent Extr. Res. Dev. (IF 0.7) Pub Date : 2020-12-11 Saki FUKUMA, Toshinori SHIMANOUCHI, Kazuma YASUHARA, Yukitaka KIMURA
The partitioning behavior of horseradish peroxidase (HRP) to phospholipid- and surfactant vesicles has been analyzed. Peripheral binding of the zwitterionic phospholipid vesicle membranes is proposed with insertion into the membrane interior of negatively charged surfactant vesicles, resulting from non-electrostatic interaction. The insertion of HRP is interpreted by considering the interaction between
-
Quantification of Iodine Mass Transfer and Height of Emulsion Phase in “Emulsion-flow” Column Solvent Extr. Res. Dev. (IF 0.7) Pub Date : 2020-12-11 Mikiro HIRAYAMA, Takashi GOSHIMA, Kei MIZUTA, Susumu NII
“Emulsion-flow” is a unique regime of counter-current contact between aqueous and organic phases in a column extractor. The operation enables fast mass transfer as well as stable dropwise counter-current of both phases in a simple column-type apparatus. While those advantages have been reported, prediction of the column performance has been difficult because of the lack of correlation with mass transfer
-
Highly Effective Extraction of Ruthenium from Hydrochloric Acid Solutions with a Protic Ionic Liquid Trioctylammonium Chloride Solvent Extr. Res. Dev. (IF 0.7) Pub Date : 2020-12-11 Hiroyuki CHIDA, Kanshi KAWAHARA, Shoichi KATSUTA
Extraction of ruthenium(III) from hydrochloric acid solutions was investigated at 25°C by using a protic ionic liquid, trioctylammonium chloride ([HTOA]Cl), as an extraction solvent. Extraction percentages of more than 99% were obtained under the following conditions: volume ratio of aqueous to ionic liquid phase = 1; shaking time ≥ 12 h; aqueous HCl concentration (CHCl) = 4.0 mol/L. The D vs. CHCl
-
Permeation of Phenylalanine through Polymer Inclusion Membrane Containing Bi-functional Ionic Liquid Solvent Extr. Res. Dev. (IF 0.7) Pub Date : 2020-12-11 Michiaki MATSUMOTO, Kei INOUE, Yoshiro TAHARA
Phenylalanine, which is an essential amino acid, is used as a nutritional supplement. Development of a more effective separation technique from the broth is desired. We conducted permeation of phenylalanine through PVC-based membrane containing bi-functional ionic liquid consisting of Aliquat 336 and bis(2- ethylhexyl)phosphoric acid (D2EHPA), [A336][D2EHPA], as a carrier. Phenylalanine successfully
-
Application of Ionic Liquids in Solvent Extraction of Platinum Group Metals Solvent Extr. Res. Dev. (IF 0.7) Pub Date : 2020-10-19 Mochamad L. FIRMANSYAH, Wataru YOSHIDA, Takafumi HANADA, Masahiro GOTO
The advantageous properties of ionic liquids (ILs) have put them in the spotlight in recent years as durable and environmentally friendly solvents compared with conventional organic solvents. The applications of ILs have been expanding in various fields, including extraction and separation of metals. Platinum group metals (PGMs) are attractive targets for recovery using IL systems. In recent years
-
Effects of Water Molecules on Metal Complexes of Hydroxyoxime and Carboxylic Acid Extractants Solvent Extr. Res. Dev. (IF 0.7) Pub Date : 2020-10-19 Yasutaka NISHIHARA, Satoshi YOSHIO
Water molecules around the cobalt(II) (Co) and manganese(II) (Mn) complexes of the hydroxyoxime extractant, LIX63 and/or of the carboxylic acid extractant, Versatic acid 10 (VA10), in cyclohexane solvent were investigated using molecular dynamics calculations with simulated annealing. For the complexes of VA10, water molecules were coordinated to the metal ions, and VA10 molecules were found around
-
Removal of Radionuclide Uranium from South China’s Ion-adsorption Rare Earth Leach Liquor Using Solvent Extraction with Naphthenic Acid Solvent Extr. Res. Dev. (IF 0.7) Pub Date : 2020-10-19 Kuifang ZHANG, Yuping ZENG, Zhiqiang LIU, Hongyang CAO, Wei ZHU, Qiusong GUO
A novel naphthenic acid extractant has been used to remove U from South China’s ion-adsorption rare earth (RE) leach liquor. The system was optimized in terms of its extractant composition and the conditions for loading, stripping and phase separation. Extraction and stripping distribution isotherms were determined. 99.70% of the U was removed by three-stage counter current extraction using 15% (v/v)
-
Extraction Kinetics of Methylene Blue by AOT and DEHPA Reversed Micellar Solution Solvent Extr. Res. Dev. (IF 0.7) Pub Date : 2020-10-19 Takumi KINUGASA, Takamasa ICHIRYU, Miyuki SHINOHARA, Yasuhiro NISHII
Water pollution in China, Southeast Asia and other developing countries is a major problem, one of which is synthetic dyes contained in industrial wastewater. In this study, we focused on reversed micellar extraction which is promising from the viewpoint of both costs and energy saving, and examined the extraction rate of methylene blue (MB) using sodium bis(2-ethylhexyl)sulfosuccinate (AOT) and d
-
Synergism in the Extraction of Ru(III) by a Tri-n-Octylamine–Di-n-Hexylsulfide System Solvent Extr. Res. Dev. (IF 0.7) Pub Date : 2020-10-19 Tomoya SUZUKI, Takeshi OGATA, Mikiya Tanaka, Hirokazu NARITA
We have found that a mixture of tri-n-octylamine (TOA) and di-n-hexylsulfide (DHS) in CHCl3 displays synergistic extraction of Ru(III) from aqueous HCl. Approximately 55% of Ru(III) was extracted by a 0.25 M TOA–0.25 M DHS system, whereas a single extractant, 0.25 M TOA or 0.25 M DHS, achieves hardly any Ru(III) extraction. Job plots of the extraction of Ru(III) from 5 M HCl aqueous solution indicate
-
Preliminary Study on Separation of Dy and Nd by Multi-Step Extraction Using TDdDGA Solvent Extr. Res. Dev. (IF 0.7) Pub Date : 2020-10-19 Yuji SASAKI, Yasutoshi BAN, Keisuke MORITA, Masahiko MATSUMIYA, Ryoma ONO, Hidenobu SHIROISHI
Mutual separation technique of Dy and Nd in Nd magnets is studied. Dy is more valuable than Nd, and therefore, Dy should be isolated and reused. Lanthanide elements can be extracted thoroughly by using diglycolamide (DGA) extractants, and we use this reagent to recover and isolate Dy. N,N,N',N'-TetradodecylDGA (TDdDGA) has a relatively high separation factor (SF) between Dy and Nd (SF: over 10) in
-
Effect of HNO3 Concentration on the Pd(II) Extraction Properties using a Thiodiglycolamide Compound Solvent Extr. Res. Dev. (IF 0.7) Pub Date : 2019-06-12 Michal CIBULA, Yusuke INABA, Yongjie LI, Tomoya SUZUKI, Hirokazu NARITA, Kenji TAKESHITA
Dependence of the Pd(II) complexes extracted with N,N'-dimethyl-N,N'-ditolyl-thiodiglycolamide (MTTDGA) in chloroform on HNO3 concentrations in the aqueous phase was investigated by liquid-liquid extraction experiments and Fourier-transform infrared spectroscopy (FT-IR) measurements. The extraction behavior of Pd(II) clearly differed between 0.5 M and 8 M HNO3 concentrations. It took ~8 h and <5 min
-
Ultrasonic Assisted Microchannel Extraction of Fe(III) from Wet-Process Phosphoric Acid Solvent Extr. Res. Dev. (IF 0.7) Pub Date : 2019-06-12 Shuai ZHANG, Xingbin LV, Qi XIA, Jiangpo ZHANG, Jianjun CHEN, Daijun LIU
An ultrasonic assisted microchannel extraction (UAME) method was developed for the extraction of Fe(III) from wet-process phosphoric acid with di(2-ethylhexyl)phosphoric acid (D2EHPA). The influences of ultrasonic power, extractant concentration, water phase velocity and the ratio of the organic and aqueous phases (O/A) on the extraction rate of Fe(III) were systematically studied. The results showed