CHEMICAL ENGINEERING RESEARCH & DESIGN
·
2022
·
IF 4.119
Haitao Zhou,Kun Huang
A new approach using water as the stripping phase for extraction and recovery of low-concentration Ga (III) from concentrated hydrochloric acid solutions by Aliquat 336-based supported liquid membrane (SLM) is suggested. Generally, the stripping of Ga (III) from the loaded organic phase during liquid-liquid two-phase stirring extraction using quaternary ammonium salt as an extractant is extremely difficult. However, in the present work, an efficient mass transfer of low-concentration Ga (III) through the SLM was observed by introducing a low acidity (pH=2) aqueous solution as the stripping phase of the SLM. It was revealed that dissociation of GaCl 4 - and HCl 2 - anions into Ga 3+ , Cl - and H + ions at the stripping/membrane phase interface play an important role in driving the mass transfer of GaCl 4 - from the concentrated hydrochloric acid solutions towards stripping phases. Kinetic analysis suggests that the permeability coefficient of Ga (III) ions through the SLM is dependent on the reaction temperature, extractant Aliquat 336 concentrations, and the difference in Cl - concentrations between the two sides of the liquid membrane phase , but independent of H + concentrations. In view of future’s applications for selective separation and recovery of low-concentration Ga (III) from the concentrated hydrochloric acid leaching solutions of various gallium-containing solid wastes, separation selectivity of Ga (III) against other coexisting metal impurity ions, such as Fe (II), Al (III), Mg (II) and Cu (II), was also evaluated.
研究领域:
化学工程
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Yunqian Zhang,Longqian Xu,Guojie Ye,Chengsi Hou,Deli Wu
Wastewater contains abundant small molecular acids such as acetic acid, but current treatment methods mainly focus on degradation, lacking effective means for recovery. In this study, we propose the use of supported liquid membrane (SLM) for the separation and recovery of organic acids in wastewater treatment. By optimizing the formulation of the liquid membrane and selecting the supporting matrix, we successfully constructed the SLM with superior performance for acetic acid separation, the acetic acid recovery efficiency could be stabilized at over 90 % after 9 hours. The effects of pH, recirculation flow rate, inorganic salt, and organic matter on the separation of acetic acid by this system were investigated and discussed. The primary driving forces for the separation of acetic acid in SLM are the chemical potential gradient and the concentration difference created by the pH difference, and the reaction mechanism and kinetics of this process were thoroughly analyzed. In the performance tests, the SLM exhibited excellent long-term operational stability and regenerative capacity, showing no decline in acetic acid recovery performance after five regeneration cycles. Furthermore, it demonstrated broad applicability for the recovery of various organic acids. Overall, this novel SLM system provides an effective strategy for recovering small organic acids from wastewater, facilitating their resourceful utilization.
研究领域:
环境科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
·
2024
·Vol. 333
·期 4
·2195-2206
·
IF 1.5
Li Junze,Zhao Chuang,Guo Wenbin,Gao Yang,Liu Tingting,Zhou Yu,Hou Hongguo,Jiao Caishan,Zhang Meng
Using DMDODGA as the carrier, the transportation and separation behavior of Eu(III) and La(III) were studied using a plate-type supported liquid membrane. La(III) and Eu(III) reach their maximum transport rates at feed phase nitric acid concentrations of 2 and 4 mol/L, which are 72.41 (± 2.12)% and 77.80 (± 2.45)%; Increasing the concentration of NO 3 − in feed phase will promote the transport of both ions. The change of HNO 3 concentration in feed phase had major effect on the separation of Eu(III)/La(III), and the co-transport of Eu(III)/La(III) was observed when the concentration of NO 3 − was 3 mol/L.
研究领域:
化学工程
·
分离科学
✓ 已验证
DOI
高影响因子
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
·
2017
·
IF 4.421
Panpan Zhao,Fan Yang,Zhigang Zhao,Qiuxiao Liao,Yang Zhang,Peng Chen,Wanghuan Guo,Ruixi Bai
For the first time, our group has developed a novel, high-flux strategy for shape-controlled synthesis of rare earth nano-materials (CePO 4 ) using ionic liquid(IL)-driven supported liquid membrane (HVHP, DUPAPORE ® ) system. The system contains three phases including a supply phase of rare earth ions, a feed phase of phosphates, and ionic liquid-driven supporting liquid membrane phase. The imidazolium IL-driven supported liquid membrane is promising for nano-synthetic reaction of CePO 4 . The anion types of immersed imidazolium IL have a critical role in the formation rate of CePO 4 nano-materials. Moreover, the adding SO 4 2− anion or adjustment of pH in supply phase containing Ce(III) ions could control effectively the morphology of the CePO 4 nano-materials. The result can be regarded as a good example, the IL:[C 4 mim][Tf 2 N] −driven support liquid membrane systems can be used to prepare nano-wire and nano-sphere structures of CePO 4 with high efficiency and flux. Besides, the IL-driven supported liquid membrane can be cycled many times by using the back flush activation method.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION SCIENCE AND TECHNOLOGY
·
2020
·
IF 1.718
Haitao Zhou,Xiuli Zhang,Tianran Lv,Qingjie Guo,Lingyun Wang
The transport of Ga(III) from chloride solution by supported liquid membrane (SLM) using organophosphorus acids as carriers was studied and compared with solvent extraction results. The diffusion coefficient, permeability coefficient and mass transfer resistance for both processes were analyzed by investigating various parameters, such as flow pattern, flow rate, pH, Ga(III)/extractant concentration and temperature. Under optimized conditions, the extraction percentage of 97.0% and permeability coefficient of 9.22 × 10−6 m/s was achieved for SLM process. Kinetic modeling was proposed to determine the mass diffusion coefficient of Ga(III) complex across the membrane and stability of this SLM system was also examined.
研究领域:
化学工程
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2017
·
IF 6.035
Bin Jiang,Haozhen Dou,Luhong Zhang,Baoyu Wang,Yongli Sun,Huawei Yang,Zhaohe Huang,Hanrong Bi
Deep eutectic solvents (DESs), as a new generation of designer solvents , were firstly employed to fabricate the supported liquid membranes (SLMs) for the olefin/paraffin separation via facilitated transport. The novel CuCl/DESs-SLMs were prepared by impregnating the mixture of choline chloride-glycerol based DESs and copper (I) chloride (CuCl) into the microporous nylon membranes. The results of FTIR, 1 HNMR and mass spectrometry (MS) confirmed the existence of various Cu (I)-containing anionic species and hydrogen-bond networks in the membrane liquid of CuCl/DESs. The CuCl/DESs-SLMs were characterized by scanning electron microscope (SEM), contact angle measurement and weight analysis, and their performances of CuCl/DESs-SLMs were evaluated by the C 2 H 4 /C 2 H 6 separation experiments. The effects of DESs composition, CuCl concentration , operation pressure and temperature were investigated systemically. It was found that the activity and chemical stability of Cu (I)-containing anionic species were enhanced through the hydrogen-bond interactions between the anionic species and DESs, which significantly increased the permeability of C 2 H 4 and selectivity of C 2 H 4 /C 2 H 6 . Compared with other studies, the CuCl/DESs-SLMs exhibited comparable permeability and higher selectivity up to 20 for C 2 H 4 /C 2 H 6 . In conclusion, the CuCl/DESs-SLMs provided a promising method for the C 2 H 4 /C 2 H 6 separation.
研究领域:
化学工程
·
材料科学
✓ 已验证
DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2017
·
IF 2.843
Bin Jiang,Wenjun Tao,Haozhen Dou,Yongli Sun,Xiaoming Xiao,Luhong Zhang,Na Yang
Binary metal chloride deep eutectic solvents (DESs) were first prepared by adding different metal chlorides into 1-butyl-3-methylimidazolium chloride ([BMIM]Cl)/CuCl DESs to improve the activity of the Cu+ carrier for ethylene/ethane separation. The binary metal chloride DESs were impregnated in the polyvinylidene fluoride microporous membrane to prepare the supported liquid membranes (SLMs). The performance of the SLMs based on binary metal chloride DESs was evaluated by ethylene/ethane separation experiments. For the SLM based on 0.5[BMIM]Cl-CuCl-1/15ZnCl2 DES, the selectivity of ethylene/ethane mixture increased from 10.7 to 17.8, and the ethylene permeability decreased slightly from 28.6 barrer to 25.8 barrer, compared to 0.5[BMIM][Cl] SLM without ZnCl2. Furthermore, it exhibited long-term stability for more than 150 h. The beneficial role of ZnCl2 for Cu+ carrier was analyzed by electrospray ionization mass spectrometry, Raman spectroscopy, and quantum mechanical calculation. The Raman spectrum showed that the Cu–Cl bond was weakened with the addition of ZnCl2. Quantum mechanical calculation revealed that the electron transferred from a Cl– ion of CuCl2– to the Zn2+ ion, which led to the weakening of the Cu–Cl bond and the activation of the Cu+ carrier.
研究领域:
化学工程
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2023
·
IF 8.6
Kaibo Hu,Wenyi Zhang,Yucheng Liu,Qian Xu,Tianci Chen,Jiuyang Lin,Xuewei Li,Yinhua Wan
Yttrium (Y) separation from Y-rich heavy rare earth groups is a complex challenge due to their similar physical and chemical properties. Conventional industrial separation processes require the use of complex and polluting techniques, thus highlighting the need for cleaner and more efficient methods for Y separation. In this study, a new method for separating Y from Y-rich heavy rare earth groups was developed using the hollow fiber renewal support liquid membrane (HFRLM) with an amine-group-functionalized ionic liquid ([N1888][CA12]) system, which eliminates the need for acids and bases during the extraction and stripping process. The high extraction efficiency and strong hydrophobicity of [N1888][CA12] enhances the stability and efficacy of the HFRLM . The optimal hydrodynamic conditions were achieved using a stripping solution of water, phase volume ratio of 4.8, NaCl concentration of 0.6 mol/L, [N1888][CA12]concentration of 0.4 mol/L, and flow rate of 350 mL/min. Moreover, a deionized water regeneration [N1888][CA12]-HFRLM method was established, and the system remained highly stable after five regenerations. Furthermore, the [N1888][CA12]-HFRLM system was evaluated for separating Y from Y-rich heavy rare earth groups, and it was found that the molar ratio of Y increased from 70.9% to over 98.4%.
研究领域:
化学工程
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
WATER RESEARCH
·
2023
·
IF 12.8
Longqian Xu,Yunqian Zhang,Tingting Li,Shuai Peng,Deli Wu
Separating molecular substances from wastewater has always been a challenge in wastewater treatment. In this study, we propose a new strategy for simultaneous desalination and selective recovery of molecular resources, by introducing a supported liquid membrane (SLM) with molecular selectivity into an asymmetric flow-electrode capacitive deionization. Salts and molecular substances in wastewater are removed after passing through the ion separation chamber and the molecular separation chamber, respectively. Faradaic reactions, i.e., the electrolysis of water with OH – , occurred in the electrochemical cathode electrode provides a sufficient and continuous chemical potential gradient for the cross-SLM transport of phenol (a model molecule substance). By optimizing the formulation of the liquid membrane and the pore size of the support membrane, we obtained the SLM with the best performance for separating phenol. In continuous experiment tests, the electrochemical membrane system showed stable separation performance and long-term stability for simultaneous salts removal and phenol (sodium phenol) recovery from wastewater. Finally, we demonstrate the potential application of this technology for the recovery of different carbon resources. Overall, the electrochemical system based on SLM is suitable for various wastewater treatment needs and provides a new approach for the recovery of molecular resources in wastewater.
研究领域:
环境工程
·
化学工程
·
水处理
·
膜技术
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）