Journal of Chemistry
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2013
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IF 0
Qiang Huang,Jianping Liu
A facile and clean fabrication of large-scale ZnO nanorods assisted with Aliquat 336 using aqueous chemical method is reported. As prepared, samples were characterized using XRD, EDS, SEM, TEM, and HRTEM. The optical properties were measured by Raman spectroscopy and room temperature photoluminescence spectra.
研究领域:
材料科学
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化学
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产品关联
DOI
SEPARATION SCIENCE AND TECHNOLOGY
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2021
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IF 2.475
Xuekai Zhang,Kanggen Zhou,Qingyuan Lei,Yan Xing,Changhong Peng,Wei Chen
A new approach was developed using NaH2PO4 as the stripping agent for Fe stripping from Fe-loaded Aliquat 336 during rare-earth elements recovery from red mud leachate. Owing to the strong coordination between Fe3+ and H2PO4‒, Fe mainly exists as FeH2PO42+ at [H2PO4‒] higher than 0.5 M, which can be readily stripped. The results showed a maximum Fe stripping efficiency of 95.5% under optimal condition. Moreover, the extraction capacity of the extractant after stripping was comparable to that of fresh extractant, and decreased only by 2% after 6 cycles, indicating the robustness of this approach for Fe stripping and extractant regeneration.
研究领域:
化学工程
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环境科学
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Tianlei Yang,Shen Zhao,Jie Wang,Mingqi Guo,Yueping Guan,Tao Li
The recovery of low-concentration Au(III) from industrial wastewater holds significant economic and environmental value. Therefore, developing materials for the efficient extraction of low-concentration Au (III) is of great importance. In this study, we propose a novel microextraction scheme that combines the characteristics of microextraction with an extractant curing technique. Magnetic polystyrene microspheres serve as containers to encapsulate the extraction phase, which consists of the extractant (Aliquat 336) and the diluent (1,2-dichloroethane). Magnetic polystyrene microspheres with a diameter of 3.69 μm were swollen using an emulsion containing Aliquat 336 and 1,2-dichloroethane, resulting in the formation of magnetic oil-based gel microspheres with a diameter of 10.14 μm. These magnetic oil-based gel microspheres, which also contain Aliquat 336, are composed of 1,2-dichloroethane (81.73 wt%), Aliquat 336 (11.52 wt%), polystyrene (4.36 wt%), and iron tetroxide (1.69 wt%). At a low oil-to-water (O:A) ratio (ranging from 1:40 to 1:100), the microspheres achieved extraction equilibrium within 8 min. An eluent solution containing 0.1 mol·L −1 hydrochloric acid and 0.05 mol·L −1 thiourea was able to completely reverse the extraction of AuCl 3 from the microspheres, facilitating their regeneration. The microspheres demonstrated stable and effective extraction capabilities over four cycles. In the presence of impurity ions (Ca 2+ , Fe 3+ , Cu 2+ , and Ni 2+ ), the extraction rate of gold by the microspheres exceeded 95 %, while the extraction rate of the impurity ions remained below 10 %. This indicates the excellent selective extraction ability of the microspheres for Au(III).
研究领域:
环境科学
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材料科学
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化学工程
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产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2016
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IF 3.299
Guozhi Zhang,Desheng Chen,Wei Zhao,Hongxin Zhao,Lina Wang,Dan Li,Tao Qi
A selective synergistic extraction process for recovering vanadium (V) from the high-acidity chloride leaching liquor was proposed. Vanadium (V) extraction from the simulated high-acidity leaching liquor with numerous impurities using a mixed extractant consisting of tricaprylmethylammonium chloride (Aliquat 336) and tri-n-butyl phosphate (TBP) was studied while obvious synergism was found. According to synergistic enhancement coefficient and physical property of organic phase, the suitable extractant composition was the volume ratio of Aliquat 336 to TBP 1:4. The vanadium (V) extraction increased sharply as HCl concentration increased from 1.01 mol/L to 4.13 mol/L. Under the optimum extraction conditions (extractant concentration of 50 vol%, 1 min, 25–30 °C, and phase ratio (O/A) of 1:1), the vanadium extraction with three stages was above 90.0%. Almost no other impurity ions, such as Ca, Al, Mg, Cr, Ti, Mn, and Si, were co-extracted. Under the optimum stripping conditions, the vanadium stripping was above 92.0% in a single stage using water as the effective stripping reagent. High-quality V 2 O 5 product was obtained after precipitation and calcination . The mechanism of vanadium (V) extraction by Aliquat 336–TBP mixed extractant was discussed based on the analysis of FT-IR and UV–vis spectra.
研究领域:
冶金学
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化学工程
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DOI
高影响因子
Journal of Environmental Chemical Engineering
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2022
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IF 7.968
Xiaoyu Lin,Xi He,Ling Lei,Yufeng Zhao,Longzhe Cui,Guiping Wu
Cr(VI)-contaminated water poses a serious threat to the environment. In this study, capsule-type biosorbent Aliquat-336-filled chitosan capsules (AFCCs) were prepared by a simple and gentle method for more efficient and eco-friendly removal of Cr(VI). The experimental results show that the uptake of Cr(VI) by AFCCs increased with increasing Aliquat-336 content. The AFCCs show excellent stability under acidic conditions, and the maximum adsorption capacity was reached at a pH of 2. The maximum adsorption capacity of AFCCs for Cr(VI) was 110.94 ± 5.07 mg/g at 20 °C, which was calculated based on the Langmuir model. The kinetic results show that the adsorption rate control process changed from liquid film diffusion to a chemical reaction with increasing shaking rate. In addition, the AFCCs and adsorption-reduction mechanism of Cr(VI) were characterized by digital photography, electron microscope , zeta potential , Fourier-transform infrared spectroscopy (FT-IR) and X-ray photoelectron spectroscopy (XPS). The results indicated that the electrostatic attraction between quaternary amine groups in Aliquat-336 and Cr(VI) anions plays a major role in the removal of Cr(VI). Subsequently, the adsorbed Cr(VI) obtained electrons from C C/C H and NH 3 + / NH 2 + were reduced to Cr(III), while C C/C H and NH 3 + / NH 2 + were oxidized to C O, C O, =NH + , =N and N O, respectively.
研究领域:
环境科学
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材料科学
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DOI
高影响因子
CHEMICAL ENGINEERING RESEARCH & DESIGN
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2022
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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
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）