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144 results on '"Ye, Wenyuan"'

30. Shielding effect enables ultrafast ion transfer through nanoporous membrane for highly energy-efficient electrodialysis

Author

Lin, Jiuyang, primary, Ye, Wenyuan, additional, Xie, Shuangling, additional, Du, Jiale, additional, Liu, Riri, additional, Zou, Dong, additional, Chen, Xiangyu, additional, Yu, Zijian, additional, Fang, Shengqiong, additional, Ang, Elisa Yun Mei, additional, Toh, William, additional, Han, Dan Dan, additional, Ng, Teng Yong, additional, Seo, Dong Han, additional, Zhao, Shuaifei, additional, Bruggen, Bart Van der, additional, Xie, Ming, additional, and Lee, Young Moo, additional

Published
2022
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33. Robust bio-inspired superhydrophilic and underwater superoleophobic membranes for simultaneously fast water and oil recovery

Author

UCL - SST/IMMC/IMAP - Materials and process engineering, Fuzhou University - Fujian Provincial Engineering Research Center of Rural Waste Recycling Technology, Tianjin University - School of Chemical Engineering and Technology, Fujian Agriculture and Forestry University - Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, KU Leuven - Department of Chemical Engineering, Deakin University - Geelong, Institute for Frontier Materials, Liu, Riri, Chen, Qin, Cao, Moyuan, Lin, Jiuyang, Lin, Fang, Ye, Wenyuan, Luis Alconero, Patricia, Van der Bruggen, Bart, Zhao, Shuaifei, UCL - SST/IMMC/IMAP - Materials and process engineering, Fuzhou University - Fujian Provincial Engineering Research Center of Rural Waste Recycling Technology, Tianjin University - School of Chemical Engineering and Technology, Fujian Agriculture and Forestry University - Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, KU Leuven - Department of Chemical Engineering, Deakin University - Geelong, Institute for Frontier Materials, Liu, Riri, Chen, Qin, Cao, Moyuan, Lin, Jiuyang, Lin, Fang, Ye, Wenyuan, Luis Alconero, Patricia, Van der Bruggen, Bart, and Zhao, Shuaifei

Abstract

Designing a stable and uniform hydrophilic material for separation of oil and water is strongly desired for sustainable management of oily wastewater. Herein, a stable and uniform bio-inspired coating onto the non-woven fabric substrate with superhydrophilicity and underwater superoleophobicity via rapid co-deposition of dopamine and polyethylenimine was demonstrated. Ammonium persulfate outperformed other oxidants (e.g., Cu2+-H2O2 and NaIO4) to rapidly trigger the co-deposition of dopamine and polyethylenimine for homogeneous superhydrophilic and underwater superoleophobic surface engineering. Furthermore, the co-deposition conditions, i.e., concentration of ammonium persulfate and exposure duration, have a positive dependence on the hydrophilicity and underwater oleophobicity of the coated fabric membranes. Specifically, the superhydrophilicity and underwater superoleophobicity (underwater oil contact angle of 165.4 ± 1.1°, sliding angle of 2.5 ± 0.5°) can be obtained for the coated fabric membranes at the optimal co-deposition condition (i.e., 28.5 mmol L- 1 persulfate and coating duration of 7 h), showing a great potential in gravitational oil-water separation (permeation flux >115,000 L m-2 h-1; oil rejection >99.2%). Integrating with a superhydrophobic copper mesh, the oil-water mixed solution can be continuously and sufficiently separated, realizing simultaneous recovery of pure oil and water from oily wastewater. In addition, the bio-inspired coating displays a strong long-term chemical robustness and stability in extreme environments (i.e., acidic/alkaline solutions and oils). The study provides a facile, cost-effective and practical strategy in constructing superhydrophilic and underwater superoleophobic interfaces for sustainable treatment of oily wastewater.

Published
2021

34. Integrated loose nanofiltration-electrodialysis process for sustainable resource extraction from high-salinity textile wastewater

Author

UCL - SST/IMMC/IMAP - Materials and process engineering, Lin, Jiuyang, Chen, Qin, Huang, Xuan, Yan, Zhongsen, Lin, Xiaocheng, Ye, Wenyuan, Arcadio, Sotto, Luis Alconero, Patricia, Bi, Jinhong, Van der Bruggen, Bart, Zhao, Shuaifei, UCL - SST/IMMC/IMAP - Materials and process engineering, Lin, Jiuyang, Chen, Qin, Huang, Xuan, Yan, Zhongsen, Lin, Xiaocheng, Ye, Wenyuan, Arcadio, Sotto, Luis Alconero, Patricia, Bi, Jinhong, Van der Bruggen, Bart, and Zhao, Shuaifei

Abstract

Effective extraction of useful resources from high-salinity textile wastewater is a critical pathway for sustainable wastewater management. In this study, an integrated loose nanofiltration-electrodialysis process was explored for simultaneous recovery of dyes, NaCl and pure water from high-salinity textile wastewater, thus closing the material loop and minimizing waste emission. Specifically, a loose nanofiltration membrane (molecular weight cutoff of ~800 Da) was proposed to fractionate the dye and NaCl in the high-salinity textile wastewater. Through a nanofiltration-diafiltration unit, including a pre-concentration stage and a constant-volume diafiltration stage, the dye could be recovered from the high-salinity textile wastewater, being enriched at a factor of ~9.0, i.e., from 2.01 to 17.9 g·L−1 with 98.4% purity. Assisted with the subsequent implementation of electrodialysis, the NaCl concentrate and pure water were effectively reclaimed from the salt-containing permeate coming from the loose nanofiltration-diafiltration. Simultaneously, the produced pure water was further recycled to the nanofiltration-diafiltration unit. This study shows the potential of the integration of loose nanofiltation-diafiltration with electrodialysis for sufficient resource extraction from high-salinity textile wastewater.

Published
2021

36. Electron microscopic structure of purified, active [gamma]-secretase reveals an aqueous intramembrane chamber and two pores

Author

Lazarov, Vlado K., Fraering, Patrick C., Ye, Wenyuan, Wolfe, Michael S., Selkoe, Dennis J., and Li, Huilin

Subjects
Electron microscopy -- Research, Proteases -- Research, Science and technology
Abstract

[gamma]-Secretase is an intramembrane-cleaving aspartyl protease required for the normal development of metazoans because it processes Notch within cellular membranes to release its signaling domain. More than two dozen additional substrates of diverse functions have been reported, including the Notch ligands Delta and Jagged, N- and E-cadherins, and a sodium channel subunit. The protease is causally implicated in Alzheimer's disease because it releases the neurotoxic amyloid [beta]-peptide (A[beta]) from its precursor, APP. [gamma]-Secretase occurs as a large complex containing presenilin (bearing the active site aspartates), nicastrin, Aph-1, and Pen-2. Because the complex contains at least 18 transmembrane domains, crystallographic approaches to its structure are difficult and remote. We recently purified the human complex essentially to homogeneity from stably expressing mammalian cells. Here, we use EM and single-particle image analysis on the purified enzyme, which produces physiological ratios of A[beta]40 and A[beta]42, to obtain structural information on an intramembrane protease. The 3D EM structure revealed a large, cylindrical interior chamber of ~20-40 A in length, consistent with a proteinaceous proteolytic site that is occluded from the hydrophobic environment of the lipid bilayer. Lectin tagging of the nicastrin ectodomain enabled proper orientation of the globular, ~120-[Angstrom]-long complex within the membrane and revealed -20-[Angstrom] pores at the top and bottom that provide potential exit ports for cleavage products to the extra- and intracellular compartments. Our reconstructed 3D map provides a physical basis for hydrolysis of transmembrane substrates within a lipid bilayer and release of the products into distinct subcellular compartments. electron microscopy | image analysis | intramembrane protease

Published
2006

44. Advanced desalination of dye/NaCl mixtures by a loose nanofiltration membrane for digital ink-jet printing

Author

UCL - SST/IMMC/IMAP - Materials and process engineering, Ye, Wenyuan, Lin, Jiuyang, Borrego, Ricard, Chen, Dong, Sotto, Arcadio, Luis Alconero, Patricia, Liu, Minghua, Zhao, Shuaifei, Tang, Chuyang Y., Van der Bruggen, Bart, UCL - SST/IMMC/IMAP - Materials and process engineering, Ye, Wenyuan, Lin, Jiuyang, Borrego, Ricard, Chen, Dong, Sotto, Arcadio, Luis Alconero, Patricia, Liu, Minghua, Zhao, Shuaifei, Tang, Chuyang Y., and Van der Bruggen, Bart

Abstract

In digital printing, a high salt content in dye solutions is detrimental, which calls for effective strategy for dye/salt fractionation. In this study, a loose nanofiltration (NF) membrane Sepro 2A was employed to desalinate diverse dye species (2 reactive dyes and 4 cationic dyes). This membrane, with a molecular weight cutoff of 490 Da, showed consistently high rejections to all the reactive and cationic dyes (>97.7%). Operational conditions such as dye concentrations and applied pressures have limited effects on the rejection of the membrane. An integrated NF-diafiltration process, involving a pre-concentration and a diafiltration step, was specifically designed for the fractionation of dye/NaCl mixtures. This loose NF membrane showed >99.7% rejection to reactive dyes (reactive blue 2 and reactive orange 16) and ca. 99.3% salt removal with ca. 2.0% dye loss after 5.0 diavolumes. However, the NF membrane experienced a 15.9% loss to methylene blue due to the lower rejection to this model cationic dye (97.2%). The current study provides important insights into dye/salt fractionation by loose NF membranes for digital ink-jet printing. © 2017 Elsevier B.V.

Published
2018

48. Potential of coagulation/GAC adsorption combined with UV/H2O2 and ozonation for removing dissolved organic matter from secondary RO concentrate.

Author

Zhang, Xian, Lin, Jiuyang, Ye, Wenyuan, Zhou, Wei, Jia, Xuxiang, Zhao, Shuaifei, and Ye, Chunsong

Subjects
OZONIZATION, DISSOLVED organic matter
Abstract

BACKGROUD Organic contaminants in secondary reverse osmosis (SRO) concentrate pose a severe threat to the ecosystem, due to their potential toxicity. In this study, potential of coagulation/granular activated carbon (GAC) adsorption combined with UV/H2O2 and ozonation for removing organic matter from industrial secondary RO concentrate was systematically investigated. RESULTS: Coagulation with 2.0 mmol L−1 FeCl3 yielded 40% removal of dissolved organic carbon (DOC), while adsorption with 5 g L−1 GAC could boost the removal efficiency up to 78.2%. Fractionation results showed that both coagulation and GAC adsorption favored hydrophobic organics. UV/H2O2 oxidation was capable of removing 87.4% of DOC, which outperformed ozonation (58.2%). UV/H2O2 and ozonation showed similar behavior in dissolved organic matter (DOM) degradation: a portion of hydrophobic organics were first transformed into hydrophilic fractions prior to final mineralization. Conclusion: Coupling of GAC as post‐treatment with a UV/H2O2 process yielded 97.9% removal of DOC and the corresponding electrical energy per order (EE/O) was decreased from 66.7 to 35.8 kWh m−3. Consequently, a simple UV/H2O2 and GAC hybrid process was proposed to be a suitable method for removing DOM from SRO concentrate. © 2018 Society of Chemical Industry [ABSTRACT FROM AUTHOR]

Published
2019
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49. High-flux nanofiltration membranes tailored by bio-inspired co-deposition of hydrophilic g-C3N4nanosheets for enhanced selectivity towards organics and saltsElectronic supplementary information (ESI) available. See DOI: 10.1039/c9en00692c

Author

Ye, Wenyuan, Liu, Hongwei, Lin, Fang, Lin, Jiuyang, Zhao, Shuaifei, Yang, Shishi, Hou, Jingwei, Zhou, Shungui, and Van der Bruggen, Bart

Abstract

Surface modification with advanced nanomaterials (i.e., 2D nanosheets) can be used to strategically tailor membrane properties, providing improved solute permselectivity to targeted molecules. In particular, 2D graphite-like carbon nitride (g-C3N4) nanosheets are a promising alternative for membrane modification, due to their exceptional physicochemical properties and facile synthesis. Herein, high-flux nanofiltration (NF) membranes were designed using bio-inspired co-deposition of hydrophilic g-C3N4nanosheets with a polydopamine (PDA)/polyethylenimine (PEI) layer onto porous ultrafiltration (UF) substrates. The g-C3N4nanosheets created additional nanochannels in the PDA/PEI layer to facilitate water molecule transport, resulting in high permeability (28.4 ± 1.2 L m−2h−1bar−1). Particularly, the bio-inspired layer structure was tailored from the UF to the NF (592 Da) scale by incorporating g-C3N4nanosheets, thereby breaking through the permeability–selectivity trade-off effect. The tailored NF membrane enabled ultrahigh retention of three reactive dyes (610–630 Da, >99.3%) and low salt rejection (2.9% for NaCl; 7.6% for Na2SO4), significantly promoting the fractionation of dyes and salts for dye desalination. Additionally, the hydrophilic g-C3N4nanosheets with oxygen plasma treatment further enhanced the wettability of the membrane surfaces, resulting in a superior antifouling performance. This study indicates the promise of g-C3N4nanosheets to engineer high-flux NF membranes with desirable fractionation performance for sustainable treatment of highly saline wastewater.

Published
2019
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50. Toward Resource Recovery from Textile Wastewater: Dye Extraction, Water and Base/Acid Regeneration Using a Hybrid NF-BMED Process

Author

Lin, Jiuyang, primary, Ye, Wenyuan, additional, Huang, Jie, additional, Ricard, Borrego, additional, Baltaru, Marian-Cornel, additional, Greydanus, Benjamin, additional, Balta, Stefan, additional, Shen, Jiangnan, additional, Vlad, Maria, additional, Sotto, Arcadio, additional, Luis, Patricia, additional, and Van der Bruggen, Bart, additional

Published
2015
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