您的检索：
学者姓名：王湛
精炼检索结果：
年份
成果类型
收录类型
来源
综合
合作者
语言
清除所有精炼条件
摘要 ：
Extracellular polymeric substances (EPSs) in activated sludge suspensions are the key substances leading to the membrane fouling. In order to understand the effect of EPSs on the membrane fouling, the actual EPSs solution extracted from activated sludge suspensions was used as the feed solution to conduct dead-end microfiltration experiment under different pressures by using different membranes. The flux (J), fouling resistances (Rm, Rp, Rc and Rtotal) and the available membrane area (A/A0) were used to describe the membrane fouling. The results showed that with the increase of pressure, J and Rtotal increased. Rp firstly increased and then kept constant, Rc always increased and became the dominant resistance. A/A0 decreased from 1 to a constant. Rc plays a key role on Rtotal for different membranes under the same pressure. The sequence of the steady available membrane area (Asteady/A0) for different pressures was: 63.0% (0.05MPa)> 56.5% (0.08MPa)> 53.6% (0.10MPa), and that for different membranes was: 80.1% (0.2μm PES) > 79.9% (0.1μm PES) > 78.4% (0.1μm PAN) > 53.6% (0.1μm PVDF). © Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence.
关键词 ：
Membranes Membranes Polymers Polymers Microfiltration Microfiltration Energy resources Energy resources Membrane fouling Membrane fouling
引用：
复制并粘贴一种已设定好的引用格式，或利用其中一个链接导入到文献管理软件中。
| GB/T 7714 | Li, Qiang , Hu, Ge , Song, Peng et al. Membrane fouling of actual extracellular polymeric substances [C] . 2021 . |
| MLA | Li, Qiang et al. "Membrane fouling of actual extracellular polymeric substances" . (2021) . |
| APA | Li, Qiang , Hu, Ge , Song, Peng , Khaliunaa, Natsagdorj , Khurram, Rooha , Zhang, Hu et al. Membrane fouling of actual extracellular polymeric substances . (2021) . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
This study systematically investigated the fouling behavior and mechanism of PAN Microfiltration (MF) membrane fouled with the model binary mixture (bovine serum albumin (BSA) and sodium alginate (SA)) of extracellular polymer substance (EPS) solution under different concentration and transmembrane pressure (TMP). The result showed that the fouling mechanism of the model binary mixture was the pore blocking and cake formation. Moreover, the SA plays a dominant role in the model binary mixture (BSA/SA). The higher SA concentration could cause the more serious membrane fouling (both the flux (J) and the available membrane area (A/A0) decreased), and the total resistance increased and caused the fouling mechanism changing from combined complete blocking and cake filtration into individual cake filtration appeared earlier. In addition, increasing of the TMP can also aggravate membrane fouling and it could be accurately described by the cake-complete model. This studied offered insight into the model binary mixture in the fouling behavior and mechanism, which can be used as guidance for practical application. © Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence.
关键词 ：
Binary mixtures Binary mixtures Energy resources Energy resources Mammals Mammals Sodium alginate Sodium alginate Membrane fouling Membrane fouling Microfiltration Microfiltration
引用：
复制并粘贴一种已设定好的引用格式，或利用其中一个链接导入到文献管理软件中。
| GB/T 7714 | Gao, Shujuan , Liu, Xinsen , Zhang, Hu et al. The study of fouling behavior for the model binary mixture [C] . 2021 . |
| MLA | Gao, Shujuan et al. "The study of fouling behavior for the model binary mixture" . (2021) . |
| APA | Gao, Shujuan , Liu, Xinsen , Zhang, Hu , Liu, Xuguo , Wang, Zhan , Wang, Xi . The study of fouling behavior for the model binary mixture . (2021) . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
In order to sufficiently study the effects of stirring speed and temperature on the membrane flux, the flux recovery rate (FRR) and model parameters (k1, k2, k3 and Ri) of the PAN membrane (200kDa) fouled by yeast suspension, a series of rinsing experiments were carried out. Meanwhile, the instantaneous membrane flux was predicted by the rinsing model and corresponding regression equation of model parameters was obtained. The result indicated that the model shows a good agreement (R2>0.9700) and the temperature has a more significant effect on FRR and model parameters (k1, k2, k3 and Ri). FRR increased from 58.40% to 99.41% when the temperature increase from 25°C to 55°C (the rate constant of dissolution increased from 0.00371 m-1 to 0.00531 m-1) while it only increased from 55.67% to 67.50% when the stirring speed increases from 200 rpm to 800 rpm (the rate constant of dissolution increased from 0.00366 m-1 to 0.00456 m-1). In addition, the rinsing condition can be optimized by the combination of the prediction model of flux (equation (1)) and the regression equation (equation (2)) to obtain the optimal cleaning condition. © Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence.
关键词 ：
Rate constants Rate constants Dissolution Dissolution Energy resources Energy resources Yeast Yeast Predictive analytics Predictive analytics
引用：
复制并粘贴一种已设定好的引用格式，或利用其中一个链接导入到文献管理软件中。
| GB/T 7714 | Guo, Yangyang , Qiao, Zhaoyu , Wang, Zhan et al. Rinsing condition optimization of the membrane fouled by yeast suspension [C] . 2021 . |
| MLA | Guo, Yangyang et al. "Rinsing condition optimization of the membrane fouled by yeast suspension" . (2021) . |
| APA | Guo, Yangyang , Qiao, Zhaoyu , Wang, Zhan , Luo, Huijia , Wang, Xi . Rinsing condition optimization of the membrane fouled by yeast suspension . (2021) . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
In this study, error function was used to analyze the membrane fouling behavior (flux decay) for bovine serum album (BSA) solution in dead-end mode and for kaolin suspension in cross-flow mode under constant pressure. The results showed that the predictions of error function had good agreements with experimental data both in dead-end mode and cross-flow mode. Meanwhile, both higher concentration and higher TMP could accelerate the membrane fouling rate. In addition, the parameter k in error function decreased with the increase of concentration or TMP. Thus, smaller parameter k represented more serious membrane fouling. © Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence.
关键词 ：
Energy resources Energy resources Errors Errors Mammals Mammals Membrane fouling Membrane fouling Microfiltration Microfiltration Suspensions (fluids) Suspensions (fluids)
引用：
复制并粘贴一种已设定好的引用格式，或利用其中一个链接导入到文献管理软件中。
| GB/T 7714 | Hu, Ge , Zhong, Chenyin , Wang, Zhan et al. Application of error function in dead-end/cross-flow microfiltration mode [C] . 2021 . |
| MLA | Hu, Ge et al. "Application of error function in dead-end/cross-flow microfiltration mode" . (2021) . |
| APA | Hu, Ge , Zhong, Chenyin , Wang, Zhan , Wang, Xi . Application of error function in dead-end/cross-flow microfiltration mode . (2021) . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
How to precisely describe the fouling behavior of activated sludge suspension in constant flux cross-flow filtration is a challenge. In this paper, a three-mechanism (standard pore blocking, complete pore blocking and cake filtration) model was established based on the classic blocking law to describe the fouling behavior of activated sludge suspension in the constant flux cross-flow filtration. The results showed that the predictions of the proposed model showed good agreements with experimental data not only for activated sludge suspension (R-2 >= 0.994), but also for bovine serum albumin protein (BSA) (R-2 >= 0.966), humic acid (HA) (R-2 >= 0.940), sodium alginate (SA) (R-2 >= 0.801) and kaolin (R-2 >= 0.961). Meanwhile, for activated sludge suspension, the variation rate of the cake resistance increased with the filtration flux, and the steady available membrane area ratio (A(steady)/A(0)) was independent on the filtration flux while it decreased with the increase of MLSS concentration. In addition, the available membrane area ratio (A(t)/A(0)) decreased slower for activated sludge suspension than that for single model solution (BSA, HA and SA) in the fouling process.
关键词 ：
Activated sludge suspension Activated sludge suspension Constant flux Constant flux Cross-flow Cross-flow Extracellular polymeric substance Extracellular polymeric substance Model Model
引用：
复制并粘贴一种已设定好的引用格式，或利用其中一个链接导入到文献管理软件中。
| GB/T 7714 | Hu, Ge , Liu, Xinsen , Wang, Zhan et al. Comparison of fouling behaviors between activated sludge suspension in MBR and EPS model solutions: A new combined model [J]. | JOURNAL OF MEMBRANE SCIENCE , 2021 , 621 . |
| MLA | Hu, Ge et al. "Comparison of fouling behaviors between activated sludge suspension in MBR and EPS model solutions: A new combined model" . | JOURNAL OF MEMBRANE SCIENCE 621 (2021) . |
| APA | Hu, Ge , Liu, Xinsen , Wang, Zhan , Du, Xinpei , Wang, Xi . Comparison of fouling behaviors between activated sludge suspension in MBR and EPS model solutions: A new combined model . | JOURNAL OF MEMBRANE SCIENCE , 2021 , 621 . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
Photocatalysis and membrane technology in a single unit is an ideal strategy for the development of wastewater treatment systems. In this work, novel GO (x wt%)/TiO2-CA hybrid membranes have been synthesized via a facile non-solvent induced phase inversion technique. The strategy aimed to address the following dilemmas: (1) Effective utilization of visible light and minimize e(-)/h(+) recombination; (2) Enhanced separation capability and superior anti-fouling and self-cleaning ability. The experimental results reveal that the integration of nano-composite (GO/TiO2) boosts the membrane properties when compared to pristine CA and single photocatalyst employed membrane (GO-CA and TiO2-CA). The effect of GO content on the properties of the photocatalytic membrane has been determined by utilizing three different ratios of GO, viz. 0.5 wt%, 1 wt%, and 2 wt% designated as NC(1)-CA, NC(2)-CA, and NC(3)-CA, respectively. Amongst them, NC(3)-CA membrane showed state-of-the-art performance with an elevated photocatalytic response (four times higher than pristine CA membrane) toward methyl orange. Moreover, the water flux of NC(3)-CA membrane is 613 L/m(2)h, approximately three times higher than bare CA membrane (297 L/m(2)h), while keeping the MO rejection high (96.6%). Besides, fouling experiments presented the lowest total and fouling resistance ratios and a higher flux recovery ratio (91.78%) for the NC(3)-CA membrane, which endows the membrane with higher anti-fouling and self-cleaning properties. Thus, NC(3)-CA membrane outperforms the other as synthesized membranes in terms of separation efficiency, visible light photo-degradation of pollutant, anti-fouling and self-cleaning ability. Therefore, NC(3)-CA membrane is considered as the next generation membrane for exhibiting great potential for the wastewater treatment applications.
关键词 ：
clean technology and engineering clean technology and engineering environmental science environmental science Graphene oxide (GO) Graphene oxide (GO) Photocatalytic membranes Photocatalytic membranes photo-degradation of MO photo-degradation of MO self-cleaning and anti-fouling ability self-cleaning and anti-fouling ability Titania (TiO2) Titania (TiO2)
引用：
复制并粘贴一种已设定好的引用格式，或利用其中一个链接导入到文献管理软件中。
| GB/T 7714 | Khurram, Rooha , Javed, Aroosa , Ke, Ruihua et al. Visible Light-Driven GO/TiO2-CA Nano-Photocatalytic Membranes: Assessment of Photocatalytic Response, Antifouling Character and Self-Cleaning Ability [J]. | NANOMATERIALS , 2021 , 11 (8) . |
| MLA | Khurram, Rooha et al. "Visible Light-Driven GO/TiO2-CA Nano-Photocatalytic Membranes: Assessment of Photocatalytic Response, Antifouling Character and Self-Cleaning Ability" . | NANOMATERIALS 11 . 8 (2021) . |
| APA | Khurram, Rooha , Javed, Aroosa , Ke, Ruihua , Lena, Cheng , Wang, Zhan . Visible Light-Driven GO/TiO2-CA Nano-Photocatalytic Membranes: Assessment of Photocatalytic Response, Antifouling Character and Self-Cleaning Ability . | NANOMATERIALS , 2021 , 11 (8) . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
Cross-flow filtration mode can greatly alleviate the membrane fouling due to the presence of shear stress. In this paper, a new flux prediction model for steady cross-flow microfiltration has been established by considering the effect of shear stress as function of the geometry of filtration module and the suspension properties in the particle mass balance. The results showed that this model possessed higher accuracy in both laminar and turbulent flow regime (relative error sigma = 4.43%/1.91%) than Glen Bolton's model (sigma = 11.88%/6.42%) and Makardij's model (sigma = 9.44%/12.92%). Meanwhile, the validity of the proposed model was approved by using other suspensions (yeast suspension and activated sludge suspension) (sigma < 3.43%) and other membranes (PVDF and PES microfiltration membrane) (sigma < 4.63%). Moreover, new criterion relationships between Sherwood number (Sh), Reynolds number (Re) and Schmidt number (Sc) in both laminar and turbulent flow regime were also established.
关键词 ：
Criterion relations Criterion relations Cross-flow microfiltration Cross-flow microfiltration Laminar/turbulent flow regime Laminar/turbulent flow regime Membrane fouling Membrane fouling Shear stress Shear stress
引用：
复制并粘贴一种已设定好的引用格式，或利用其中一个链接导入到文献管理软件中。
| GB/T 7714 | Wang, Zhan , Gao, Zhenfu . A new flux prediction model for laminar and turbulent flow regimes in constant pressure cross-flow microfiltration [J]. | JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING , 2021 , 9 (5) . |
| MLA | Wang, Zhan et al. "A new flux prediction model for laminar and turbulent flow regimes in constant pressure cross-flow microfiltration" . | JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING 9 . 5 (2021) . |
| APA | Wang, Zhan , Gao, Zhenfu . A new flux prediction model for laminar and turbulent flow regimes in constant pressure cross-flow microfiltration . | JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING , 2021 , 9 (5) . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
A new model based on the removal mechanism of loose/compact cake and the re-deposition mechanism of foulants was proposed to predict the instantaneous fouling resistance (Rf(t)) in the rinsing process of 0.1 mu m PAN membrane fouled with activated sludge. The variation trend of Rf(t) was also analyzed by the removal rate of loose/compact cake (rr-ose/rr-compact) and the re-deposition rate of foulants (rre-deposition). Moreover, the model was validated by using other foulants (yeast, actual activated sludge, HA and SA) and membranes (0.1 mu m PES and PVDF membranes). The results showed that the model predictions had good agreements with experimental data at different cross-flow velocities (1.0, 1.5, 2.0 and 2.5 m/s) or temperatures (25, 30, 35 and 40 degrees C) (R2 0.9900). Besides, the variation trend of Rf(t) could be divided into three stages: (i) Rf(t) quickly decreased and the removal of loose cake was almost completed at rinsing time of t1 (first transition point) (rrose = 0); (ii) Rf(t) slowly decreased and Rf(t) reached to minimum (rr-compact = rre-deposition) at t2 (second transition point); (iii) Rf(t) slightly increased after t2 (rr-compact(t)<rre-deposition(t)). This model would provide an accurate method to analyze the variation trend of Rf(t) in the rinsing process and a theoretical basis for the optimization of rinsing conditions.
关键词 ：
compact cake compact cake Desorption energy Desorption energy Mechanism Mechanism ose ose Rinsing model Rinsing model Transition point Transition point
引用：
复制并粘贴一种已设定好的引用格式，或利用其中一个链接导入到文献管理软件中。
| GB/T 7714 | Qiao, Zhaoyu , Wang, Zhan , Guo, Yangyang . A new model based on the cake removal and the re-deposition mechanism in the rinsing process [J]. | JOURNAL OF MEMBRANE SCIENCE , 2021 , 636 . |
| MLA | Qiao, Zhaoyu et al. "A new model based on the cake removal and the re-deposition mechanism in the rinsing process" . | JOURNAL OF MEMBRANE SCIENCE 636 (2021) . |
| APA | Qiao, Zhaoyu , Wang, Zhan , Guo, Yangyang . A new model based on the cake removal and the re-deposition mechanism in the rinsing process . | JOURNAL OF MEMBRANE SCIENCE , 2021 , 636 . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
Recently, rising distress over ecological pollution owing to water contamination by coloring effluents primarily due to dyes is of growing concern. The development of semiconductor/magnetic oxide-based nanomaterials has verified to be a potent remediation means for water pollution. In the present article, the fabrication of nanocomposites was carried out by the facile hydrothermal method. The ZnO and ZnSe nanoparticles were in situ formed on the α-Fe2O3 layer, thereby forming a heterojunction. The prepared α-Fe2O3/ZnSe nanocomposite possessed a degradation of 98.9% for a Congo red aqueous solution of 100 ppm. The α-Fe2O3/ZnO nanocomposite showed only 26% degradation of 100 ppm dye solution depicting a poor photocatalytic performance. This is attributed to the formation of recombination-enhanced configuration (type-I heterostructure) in the α-Fe2O3/ZnO nanocomposite (NC). In contrast, α-Fe2O3/ZnSe NC accomplished a higher and enhanced photocatalytic response. The key rationale for elevated photocatalytic response is the establishment of a recombination-free configuration (type-II heterostructure). Thus, α-Fe2O3/ZnSe NC known as one of outstanding nanoparticle-nanocomposite photocatalysts was synthesized under mild conditions exclusive of some multifaceted post-treatment, for dye abatement process.
关键词 ：
Alignment of energy levels Alignment of energy levels Hydrothermal process Hydrothermal process Mechanism Mechanism Photocatalysis Photocatalysis Textile wastewater treatment Textile wastewater treatment ZnO ZnO ZnSe ZnSe α-Fe2O3 α-Fe2O3
引用：
复制并粘贴一种已设定好的引用格式，或利用其中一个链接导入到文献管理软件中。
| GB/T 7714 | Khurram Rooha , Wang Zhan , Ehsan Muhammad Fahad . α-Fe2O3-based nanocomposites: synthesis, characterization, and photocatalytic response towards wastewater treatment. [J]. | Environmental science and pollution research international , 2021 , 28 (14) : 17697-17711 . |
| MLA | Khurram Rooha et al. "α-Fe2O3-based nanocomposites: synthesis, characterization, and photocatalytic response towards wastewater treatment." . | Environmental science and pollution research international 28 . 14 (2021) : 17697-17711 . |
| APA | Khurram Rooha , Wang Zhan , Ehsan Muhammad Fahad . α-Fe2O3-based nanocomposites: synthesis, characterization, and photocatalytic response towards wastewater treatment. . | Environmental science and pollution research international , 2021 , 28 (14) , 17697-17711 . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
In order to find a model solution to simulate actual extracellular polymeric substances (EPS) solution in terms of filterability behavior, a series of experiments were conducted in a dead-end unstirred cell with 0.1 μm polyvinylidene fluoride membranes using single/ binary mixtures consisting of sodium alginate (SA), bovine serum albumin (BSA) and humic acid (HA). It can obtain that the presence of BSA and SA is a necessary condition for model the filtration behavior of the actual EPS solution. Meanwhile, compared the actual EPS solution with binary mixtures model EPS solution can find that BSA/SA=140/58.3 and SA/HA=107/28.5 can exhibit the similar filtration behavior as actual EPS, while BSA/HA are far from that of actual EPS solution. The suitable type and combination of simulated solution were determined to improve the consistency with EPS solution in actual MBR system. © Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence.
关键词 ：
Binary mixtures Binary mixtures Energy resources Energy resources Fluorine compounds Fluorine compounds Mammals Mammals Membrane fouling Membrane fouling Sodium alginate Sodium alginate
引用：
复制并粘贴一种已设定好的引用格式，或利用其中一个链接导入到文献管理软件中。
| GB/T 7714 | Gao, Zhenfu , Wang, Dong , Fan, Zhiyun et al. Study on the model binary mixtures for actual EPS extracted from the activated sludge in MBR on membrane fouling [C] . 2021 . |
| MLA | Gao, Zhenfu et al. "Study on the model binary mixtures for actual EPS extracted from the activated sludge in MBR on membrane fouling" . (2021) . |
| APA | Gao, Zhenfu , Wang, Dong , Fan, Zhiyun , Liu, Ying , Wang, Zhan . Study on the model binary mixtures for actual EPS extracted from the activated sludge in MBR on membrane fouling . (2021) . |
| 导入链接 | NoteExpress RIS BibTex |
导出
| 数据： |
选中 到 |
| 格式： |
