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< Page ,Total 23 >
高浓度硝酸溶液的扩散渗析过程研究
期刊论文 | 2022 , 42 (01) , 110-114 | 膜科学与技术
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Abstract :

采用耐酸性良好的离子交换膜,研究含金属离子高浓度硝酸溶液的扩散渗析过程,用于回收水溶液中的硝酸.分别考察了进料液流量、硝酸浓度、酸水流量比等操作条件对非稳态扩散渗析过程的酸回收率和金属离子截留率的影响.结果表明,硝酸的回收率随进料液流量的增大先提高后下降,随原料液中硝酸浓度的增大而下降,随酸水流量比的增大而增加.当进料液中硝酸浓度为7 mol/L、流量为10.0 mL/min、酸水流量比为1∶1时,扩散渗析膜过程对硝酸的收率达73%,Fe~(3+)截留率为92%.根据硝酸在给定离子交换膜中的扩散速率,结合Fick定律回归数学模型参数,将模型计算结果与实际测量值对比,验证该数学模型的可靠性,为工...

Keyword :

硝酸回收 硝酸回收 扩散渗析 扩散渗析 离子交换膜 离子交换膜 膜内扩散速率 膜内扩散速率

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GB/T 7714 赵宗良 , 郭红霞 , 林育群 et al. 高浓度硝酸溶液的扩散渗析过程研究 [J]. | 膜科学与技术 , 2022 , 42 (01) : 110-114 .
MLA 赵宗良 et al. "高浓度硝酸溶液的扩散渗析过程研究" . | 膜科学与技术 42 . 01 (2022) : 110-114 .
APA 赵宗良 , 郭红霞 , 林育群 , 王保国 , 郭春禹 . 高浓度硝酸溶液的扩散渗析过程研究 . | 膜科学与技术 , 2022 , 42 (01) , 110-114 .
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Alcohols assisted in-situ growth of MoS2 membrane on tubular ceramic substrate for nanofiltration SCIE
期刊论文 | 2022 , 659 | JOURNAL OF MEMBRANE SCIENCE
WoS CC Cited Count: 6
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Abstract :

Molybdenum disulfide-based membranes have received wide attention for their excellent performance in chemical separation field. Yet, manipulating the structure of MoS2 membranes still remains an unprecedented challenge. In this work, the tubular MoS2 ceramic membranes were prepared by in-situ hydrothermal method using aqueous solution of thiourea and ammonium molybdate as precursor solution. The structure and morphology of the membranes were manipulated by introducing different alcohols into the precursor solution. The results indicated that the presence of alcohols drove the transformation of MoS2 morphology from nano sheets to spherical aggregates. As the molecular weight of the alcohols decreased, more small-sized molybdenum disulfide spheres were formed on the tubular ceramic substrate, which resulted in the formation of a great number of large transportation channels and promotion of surface area, and thereby improved the permeability of the membrane. Moreover, the addition of different alcohols enhanced the negative charge of the membrane surface, which ensured an effective rejection while enhancing the membrane permeability. The results demonstrate that the membranes prepared in a water-ethanol mixed solvent possess an excellent permeability for water (33.2 L/(m(2) h bar)) and methanol (52.2 L/(m(2) h bar)), with a rejection of more than 97% for Eriochrome black T, and an excellent pressure resistance as well as long-term running stability under cross-flow filtration. In addition, such membrane exhibited a below 30% rejection for salts, which can be utilized for dye desalination.

Keyword :

In-situ hydrothermal method In-situ hydrothermal method Nanofiltration Nanofiltration Alcohols Alcohols MoS2 ceramic membrane MoS2 ceramic membrane Dye desalination Dye desalination

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GB/T 7714 Liu, Yue , Li, Xuejian , Liu, Tongtong et al. Alcohols assisted in-situ growth of MoS2 membrane on tubular ceramic substrate for nanofiltration [J]. | JOURNAL OF MEMBRANE SCIENCE , 2022 , 659 .
MLA Liu, Yue et al. "Alcohols assisted in-situ growth of MoS2 membrane on tubular ceramic substrate for nanofiltration" . | JOURNAL OF MEMBRANE SCIENCE 659 (2022) .
APA Liu, Yue , Li, Xuejian , Liu, Tongtong , Zheng, Zilong , Liu, Qiaohong , Wang, Yan et al. Alcohols assisted in-situ growth of MoS2 membrane on tubular ceramic substrate for nanofiltration . | JOURNAL OF MEMBRANE SCIENCE , 2022 , 659 .
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一种亲水性耐氯聚砜膜制备与应用 incoPat
专利 | 2021-01-11 | CN202110033149.X
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一种亲水性耐氯聚砜膜制备与应用,属于膜分离技术领域。采用硅烷偶联剂辅助环糊精界面聚合方法对聚砜膜进行改性,得到亲水性耐氯聚砜膜。本发明制备的硅烷偶联剂辅助环糊精界面聚合改性聚砜复合膜具有较好的亲水性和耐氯性能。

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GB/T 7714 郭红霞 , 张梦蕾 , 秦振平 et al. 一种亲水性耐氯聚砜膜制备与应用 : CN202110033149.X[P]. | 2021-01-11 .
MLA 郭红霞 et al. "一种亲水性耐氯聚砜膜制备与应用" : CN202110033149.X. | 2021-01-11 .
APA 郭红霞 , 张梦蕾 , 秦振平 , 贾萌萌 , 崔素萍 . 一种亲水性耐氯聚砜膜制备与应用 : CN202110033149.X. | 2021-01-11 .
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一种含MoS2中间层的聚酰胺陶瓷复合纳滤膜及其制备方法 incoPat
专利 | 2021-08-24 | CN202110978035.2
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Abstract :

一种含MoS2中间层的聚酰胺陶瓷复合纳滤膜及其制备方法,属于膜分离技术领域。包括以下步骤:称取钼源和硫源化合物,加入去离子水中,得到前驱体溶液,将前驱体溶液倒入对位聚苯内衬中,将管式陶瓷基体完全浸入在前驱体溶液中;然后,将内衬密封后置于不锈钢反应釜中,在100~360℃下恒温反应,得到含MoS2中间层的陶瓷基体;将含MoS2中间层的陶瓷基体浸入水相单体溶液中,取出,待晾干后浸入到油相单体有机溶液中进行界面聚合;最后,将复合膜于30~100℃下热处理,即可。本发明有利于促进界面聚合过程形成连续均匀的聚酰胺分离层,显著提高了复合膜的分离性能。

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GB/T 7714 郭红霞 , 刘越 , 秦振平 . 一种含MoS2中间层的聚酰胺陶瓷复合纳滤膜及其制备方法 : CN202110978035.2[P]. | 2021-08-24 .
MLA 郭红霞 et al. "一种含MoS2中间层的聚酰胺陶瓷复合纳滤膜及其制备方法" : CN202110978035.2. | 2021-08-24 .
APA 郭红霞 , 刘越 , 秦振平 . 一种含MoS2中间层的聚酰胺陶瓷复合纳滤膜及其制备方法 : CN202110978035.2. | 2021-08-24 .
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一种新型大环芳烃复合纳滤膜及其制备方法 incoPat
专利 | 2021-08-24 | CN202110978033.3
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Abstract :

一种新型大环芳烃复合纳滤膜及其制备方法,属于膜分离技术领域。包括以下步骤:将间苯二酚杯[4]芳烃和过渡金属离子混合,将将预处理的超滤基膜于该溶液中浸渍,然后置于交联剂的有机溶剂中进行交联反应,然后在60~100℃条件下热处理,即可。本发明制备的金属配位的大环芳烃复合纳滤膜对染料废水具有优异的分离性能,在不降低截留率的情况下,大幅提高通量。

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GB/T 7714 郭红霞 , 贾萌萌 , 单玲珑 et al. 一种新型大环芳烃复合纳滤膜及其制备方法 : CN202110978033.3[P]. | 2021-08-24 .
MLA 郭红霞 et al. "一种新型大环芳烃复合纳滤膜及其制备方法" : CN202110978033.3. | 2021-08-24 .
APA 郭红霞 , 贾萌萌 , 单玲珑 , 秦振平 . 一种新型大环芳烃复合纳滤膜及其制备方法 : CN202110978033.3. | 2021-08-24 .
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一种单宁酸-羟丙基β环糊精复合纳滤膜及其制备方法 incoPat
专利 | 2021-06-24 | CN202110707898.6
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Abstract :

一种单宁酸‑羟丙基β环糊精复合纳滤膜及其制备方法,属于膜分离技术领域。将羟丙基β环糊精(HP‑β‑CD)与单宁酸混合作为水相单体,与酰氯油相单体在超滤膜表面进行界面聚合,制备单宁酸‑羟丙基β环糊精复合纳滤膜。所选用的HP‑β‑CD具有良好的水溶性,不需要氢氧化钠等溶解,避免了碱性环境对界面聚合成膜过程的影响。

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GB/T 7714 郭红霞 , 贾萌萌 , 单玲珑 et al. 一种单宁酸-羟丙基β环糊精复合纳滤膜及其制备方法 : CN202110707898.6[P]. | 2021-06-24 .
MLA 郭红霞 et al. "一种单宁酸-羟丙基β环糊精复合纳滤膜及其制备方法" : CN202110707898.6. | 2021-06-24 .
APA 郭红霞 , 贾萌萌 , 单玲珑 , 李春 , 秦振平 . 一种单宁酸-羟丙基β环糊精复合纳滤膜及其制备方法 : CN202110707898.6. | 2021-06-24 .
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Counterion exchanged hydrophobic polyelectrolyte multilayer membrane for organic solvent nanofiltration EI
期刊论文 | 2021 , 620 | Journal of Membrane Science
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Abstract :

Organic solvent nanofiltration is a promising separation technology for removing solute from an organic medium. However, the fabrication of organic solvent nanofiltration membranes with stable separation performance is still a challenge. Herein, a hydrophobic polyelectrolyte multilayer membrane was prepared through a layer-by-layer self-assembly and counterion exchange method. Poly(diallyl dimethyl ammonium chloride) (PDDA)/polyacrylic acid (PAA) multilayer was self-assembled on the surface of the hydrolyzed polyacrylonitrile substrate through electrostatic interaction. Simultaneously, calcium silicate hydrate (CSH) nanoparticles were in situ grown during the multilayer formation process due to the incorporation of precursor in polyelectrolyte solutions. Therefore, the surface roughness of the membrane was enhanced and the anti-swelling property of the polyelectrolyte multilayer was also improved. The hydrophilic [(PDDA/PAA-CSH)2.5]+Cl− membrane was then converted to the hydrophobic membrane through the counterion exchange between Cl− and perfluorooctanate (PFO−) ions. The obtained [(PDDA/PAA-CSH)2.5]+PFO− membrane has a water contact angle of 118°, which can be used to separate dyes from ethanol. Both the separation performance and stability of the polyelectrolyte multilayer membrane were improved through the in situ growth of calcium silicate hydrate nanoparticles and counterion exchange by perfluorooctanate ions. Therefore, this strategy may open a new avenue to prepare organic solvent nanofiltration membranes. © 2020 Elsevier B.V.

Keyword :

Chlorine compounds Chlorine compounds Hydrates Hydrates Ions Ions Contact angle Contact angle Hydration Hydration Nanoparticles Nanoparticles Self assembly Self assembly Organic solvents Organic solvents Silicate minerals Silicate minerals Surface roughness Surface roughness Polyelectrolytes Polyelectrolytes Nanofiltration Nanofiltration Calcium silicate Calcium silicate Nanofiltration membranes Nanofiltration membranes Multilayers Multilayers Hydrophobicity Hydrophobicity

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GB/T 7714 Lu, Yahua , Qin, Zhenping , Wang, Naixin et al. Counterion exchanged hydrophobic polyelectrolyte multilayer membrane for organic solvent nanofiltration [J]. | Journal of Membrane Science , 2021 , 620 .
MLA Lu, Yahua et al. "Counterion exchanged hydrophobic polyelectrolyte multilayer membrane for organic solvent nanofiltration" . | Journal of Membrane Science 620 (2021) .
APA Lu, Yahua , Qin, Zhenping , Wang, Naixin , An, Quan-Fu , Guo, Hongxia . Counterion exchanged hydrophobic polyelectrolyte multilayer membrane for organic solvent nanofiltration . | Journal of Membrane Science , 2021 , 620 .
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Adsorption of Lead Ion from Wastewater Using Non-Crystal Hydrated Calcium Silicate Gel. PubMed
期刊论文 | 2021 , 14 (4) | Materials
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Abstract :

In order to obtain low-cost and excellent adsorption materials, this paper used calcium acetate and water glass as raw materials to synthesis hydrated calcium silicate gel by precipitation method. The performance and structure of hydrated calcium silicate gel were systematically studied by X-ray photoelectron spectroscopy, fourier transform infrared spectroscopy, specific surface area analyzer and scanning electron microscope. Studies have shown that, non-crystal hydrated calcium silicate gel (CSH) were successfully prepared, and the removal rate of lead ion using CSH reached more than 90%. The adsorption process is consistent with the pseudo-second-order kinetic model and Langmuir adsorption isotherm model, and the limit adsorption capacity reaches 263.17 mg·g-1. The acid treatment experiment proved that the adsorption capacity of lead ion using CSH was satisfactory, and the adsorption rate remained at >60% after 5 cycles. The research may provide a low-cost, high-efficiency and high stability adsorbent.

Keyword :

adsorption properties adsorption properties adsorption stability adsorption stability synthesis synthesis calcium silicate hydrate gel calcium silicate hydrate gel

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GB/T 7714 Liu Shijie , Cui Suping , Guo Hongxia et al. Adsorption of Lead Ion from Wastewater Using Non-Crystal Hydrated Calcium Silicate Gel. [J]. | Materials , 2021 , 14 (4) .
MLA Liu Shijie et al. "Adsorption of Lead Ion from Wastewater Using Non-Crystal Hydrated Calcium Silicate Gel." . | Materials 14 . 4 (2021) .
APA Liu Shijie , Cui Suping , Guo Hongxia , Wang Yali , Zheng Yan . Adsorption of Lead Ion from Wastewater Using Non-Crystal Hydrated Calcium Silicate Gel. . | Materials , 2021 , 14 (4) .
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聚砜有机-无机杂化改性膜的研究进展 CSCD
期刊论文 | 2021 , 41 (3) , 153-161 | 膜科学与技术
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Abstract :

聚砜膜具有良好的耐高温性、耐酸碱性能和高的机械性能等,被广泛用于膜分离领域.但由于聚砜膜的表面疏水性,使其在水处理等方面的应用受到一定限制.针对聚砜膜的有机-无机改性,综述了近年来采用无机纳米粒子,如金属氧化物纳米粒子、表面修饰的氧化物纳米粒子、二维(2D)层状材料、金属有机共价材料(MOFs)和其他纳米粒子对聚砜膜的杂化改性及其研究进展,并对存在的问题和应用进行评述和展望.

Keyword :

无机纳米粒子 无机纳米粒子 有机-无机杂化膜 有机-无机杂化膜 聚砜膜 聚砜膜

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GB/T 7714 张梦蕾 , 贾萌萌 , 秦振平 et al. 聚砜有机-无机杂化改性膜的研究进展 [J]. | 膜科学与技术 , 2021 , 41 (3) : 153-161 .
MLA 张梦蕾 et al. "聚砜有机-无机杂化改性膜的研究进展" . | 膜科学与技术 41 . 3 (2021) : 153-161 .
APA 张梦蕾 , 贾萌萌 , 秦振平 , 崔素萍 , 张雪红 , 郭红霞 . 聚砜有机-无机杂化改性膜的研究进展 . | 膜科学与技术 , 2021 , 41 (3) , 153-161 .
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In-situ growth of graphene quantum dots modified MoS2 membrane on tubular substrate with high permeability for both water and organic solvent SCIE
期刊论文 | 2021 , 627 | JOURNAL OF MEMBRANE SCIENCE
WoS CC Cited Count: 14
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Abstract :

Molybdenum disulfide (MoS2) is widely used in membrane separation because of its outstanding chemical and structural stability. In this study, MoS2 nanosheets were in-situ grown on a tubular ceramic substrate through one-step hydrothermal synthesis with the graphene quantum dots (GQDs) incorporated in the precursor solution. The growth of the MoS2 nanosheets was inhibited due to the combination with GQDs through the Mo-O bond. Therefore, the number of transport channels in the MoS2/GQDs composite membrane were increased to improve the permeability. The results indicated that the MoS2/GQDs composite membrane have excellent permeances for both the aqueous solution and organic solvent. Moreover, the MoS2/GQDs composite membrane can be continuously operated in cross-flow filtration device for 100 h because the in-situ hydrothermal method has greatly improved the stability of membrane. The results indicated that the MoS2/GQDs composite membrane exhibits great potential in nanofiltration.

Keyword :

Molybdenum disulfide (MoS2) Molybdenum disulfide (MoS2) Nanofiltration Nanofiltration in-situ hydrothermal in-situ hydrothermal Ceramic substrate Ceramic substrate Graphene quantum dots (GQDs) Graphene quantum dots (GQDs)

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GB/T 7714 Liu, Yue , Qin, Zhenping , Zhang, Xuehong et al. In-situ growth of graphene quantum dots modified MoS2 membrane on tubular substrate with high permeability for both water and organic solvent [J]. | JOURNAL OF MEMBRANE SCIENCE , 2021 , 627 .
MLA Liu, Yue et al. "In-situ growth of graphene quantum dots modified MoS2 membrane on tubular substrate with high permeability for both water and organic solvent" . | JOURNAL OF MEMBRANE SCIENCE 627 (2021) .
APA Liu, Yue , Qin, Zhenping , Zhang, Xuehong , Wang, Naixin , Liu, Tongtong , Cui, Suping et al. In-situ growth of graphene quantum dots modified MoS2 membrane on tubular substrate with high permeability for both water and organic solvent . | JOURNAL OF MEMBRANE SCIENCE , 2021 , 627 .
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