Article
Engineering, Chemical
Gian Vincent Dizon, Yu-Sheng Lee, Antoine Venault, Irish Valerie Maggay, Yung Chang
Summary: Zwitterionic modification using PMMA-r-PEGMA-r-PSBMA copolymer successfully reduced membrane biofouling by about 90%, showing higher total flux recovery ratio compared to commercial hydrophilic PVDF membranes in BSA filtration and water permeation tests. The zwitterionic bi-continuous microfiltration membranes have wide applications ranging from wastewater treatment to biomedical fields.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Engineering, Chemical
Dong Je Han, Jeong F. Kim, Jong-Chan Lee, Uijin Nam, Young Hoon Cho, Eun-Ho Sohn
Summary: In this study, ionic PVDF membranes with simultaneous antifouling and bactericidal properties were developed to overcome the bio-contamination obstacle in water purification. Two different PVDF-based additives were successfully synthesized and added to PVDF dope solutions to alter the membrane properties. Among the prepared PVDF membranes, the one containing 10% PVDF-MPC/QDMA exhibited optimal performances in terms of both antifouling and bactericidal properties.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Engineering, Chemical
Irish Valerie Maggay, Maria Charisma Anne M. Suba, Hana Nur Aini, Chien-Jung Wu, Shuo-Hsi Tang, Ruth B. Aquino, Yung Chang, Antoine Venault
Summary: In this study, zwitterionic polyvinylidene fluoride membranes were prepared and characterized. The membranes showed sustained antibiofouling properties even after heat treatment, indicating their potential application in various domains requiring bi-continuous microfiltration membranes that are exposed to heat.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Engineering, Chemical
Marcello Pagliero, Antonio Comite, Omar Soda, Camilla Costa
Summary: This study focused on the effect of support structure and material on the morphology and distillation performance of flat sheet membranes made of PVDF. Different interactions between the dope solution and support materials, as well as the extent of mutual entanglement, were identified as key parameters in membrane preparation, governing overall porosity and pore size.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Biochemistry & Molecular Biology
Muhammad Zahid, Tayyaba Khalid, Zulfiqar Ahmad Rehan, Talha Javed, Saba Akram, Anum Rashid, Syed Khalid Mustafa, Rubab Shabbir, Freddy Mora-Poblete, Muhammad Shoaib Asad, Rida Liaquat, Mohamed M. Hassan, Mohammed A. Amin, Hafiz Abdul Shakoor
Summary: The study focused on the fabrication of sulfonated graphene oxide doped polyvinylidene fluoride (PVDF) membrane and its anti-biofouling and anti-bacterial behavior. Results indicated that the addition of SGO enhanced the properties and performance of membranes, showing promising potential for the fabrication of nanocomposite membranes.
Article
Engineering, Chemical
Dongdong Kang, Huiju Shao, Guijing Chen, Xiaoliang Dong, Shuhao Qin
Summary: The study investigates the effects of matrix miscibility on membrane microstructure during NIPS process, leading to the development of PVDF/SMANa ultrafiltration membranes with superior performance. This strategy holds promise for large-scale membrane manufacturing.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Engineering, Environmental
Hossein Mahdavi, Nazanin Zeinalipour, Mohammad Amin Kerachian, Ali Akbar Heidari
Summary: In this study, high-performance mixed matrix nanofiltration PVDF membranes (MMMs) were fabricated by incorporating PVDF-g-PMMA copolymer and GO and GO@SiO2 nanoparticles. The membrane showed high dye rejection and water flux enhancement due to the addition of hydrophilic copolymer and nanoparticles to the PVDF matrix. The durability and antifouling abilities of the membrane were also investigated, and significant performance was obtained.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Polymer Science
Seung Jae Moon, Young Jun Kim, Du Ru Kang, So Youn Lee, Jong Hak Kim
Summary: In this study, a fluorine-containing amphiphilic graft copolymer was synthesized and blended with poly(vinylidene fluoride) (PVDF) membranes to improve their water permeability, antifouling properties, and mechanical strength. The graft copolymer formed a self-assembled nanostructure, which increased the pore size and porosity of the membrane. The modified membrane showed a high water permeance, excellent antifouling properties, and improved mechanical properties.
Article
Chemistry, Physical
Ziqiang Liu, Yunfeng Wu, Fengxia Lan, Gaoyi Xie, Mengchen Zhang, Chunping Ma, Jianbo Jia
Summary: This study presents a feasible hydrophilic modification strategy of hydrophobic membranes by combining copolymer design and dopamine-assisted co-deposition. The modified membranes exhibit high permeate fluxes, good rejection performance, and great antifouling properties due to the enhanced hydrophilicity of the membrane surfaces. The results provide a new avenue to overcome the permeability-selectivity trade-off limitations and fouling problems in membrane separation processes.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Engineering, Environmental
Antoine Venault, Shi-Jie Chen, Hao-Tung Lin, Irish Maggay, Yung Chang
Summary: This study reported the synthesis of a unique positively-charged copolymer, which was mixed with poly(vinylidene fluoride) to form porous membranes capable of killing bacteria upon contact. The study found that the copolymer content influenced the membrane pore structure and hydration capacity, while the surface charge of the membrane increased with the copolymer content.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Polymer Science
Adriana Popa, Maria Stefan, Sergiu Macavei, Ioana Perhaita, Lucian Barbu Tudoran, Dana Toloman
Summary: In this study, CoFe2O4-PVDF and CoFe2O4-ZnO-PVDF hybrid membranes were prepared using a modified phase inversion method with the application of a magnetic field. The addition of nanomaterials improved the hydrophilicity properties of the PVDF membrane and significantly influenced its intrinsic properties.
Article
Engineering, Chemical
Dongdong Kang, Huiju Shao, Guijing Chen, Xiaoliang Dong, Shuhao Qin
Summary: A novel loose nanofiltration membrane was successfully fabricated by combining blending with interfacial polymerisation, showing high dye rejection rates and low salt rejection rates, high permeate flux, and excellent antifouling properties.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Biochemistry & Molecular Biology
Yixia Zhao, Zehao Zhang, Yan Zhang, Yuting Huang, Yanfei Chen, Bofei Chen, Weimin Kang, Jingge Ju
Summary: In this study, multi-level structured micro/nano fiber membranes were prepared using a one-step electrospinning technique. The morphology and structures of the membranes were found to be significantly influenced by spinning fluid parameters and spinning process parameters. The study provides a theoretical and experimental basis for the preparation of multi-level micro/nano fiber membranes.
Article
Engineering, Chemical
Pengfei Zhang, Saeid Rajabzadeh, Titik Istirokhatun, Qin Shen, Yuandong Jia, Xuesong Yao, Antoine Venault, Yung Chang, Hideto Matsuyama
Summary: A simple approach to immobilize zwitterionic copolymers on PVDF hollow fiber membranes with high stability is proposed. The modified membrane exhibits excellent antifouling and antibacterial properties, suitable for dynamic filtration.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Engineering, Chemical
Ali Sallakh Niknejad, Zahra Bande Alizadeh Maleki, Ali Kargari, Mohsen Rasouli
Summary: By adding SAN to PVDF membranes, both the surface properties and desalination performance of the membranes can be improved. Experimental results showed that the SAN-modified PVDF membranes achieved high permeate flux and excellent salt rejection in membrane distillation processes.
Article
Chemistry, Multidisciplinary
Shuo-Hsi Tang, Maria Ysabel Domino, Antoine Venault, Hao-Tung Lin, Chun Hsieh, Akon Higuchi, Arunachalam Chinnathambi, Sulaiman Ali Alharbi, Lemmuel L. Tayo, Yung Chang
Article
Chemistry, Multidisciplinary
Antoine Venault, Yung Chang
Article
Chemistry, Multidisciplinary
Jacqueline S. De Vera, Antoine Venault, Ying-Nien Chou, Lemmuel Tayo, Heng-Chieh Chiang, Pierre Aimar, Yung Chang
Article
Chemistry, Multidisciplinary
Chen-Hua Hsu, Antoine Venault, Yu-Tzu Huang, Bo-Wei Wu, Chung-Jung Chou, Kazuhiko Ishihara, Yung Chang
Article
Engineering, Chemical
Hao-Tung Lin, Antoine Venault, Yung Chang
JOURNAL OF MEMBRANE SCIENCE
(2020)
Article
Engineering, Chemical
Gian Vincent Dizon, Yu-Sheng Lee, Antoine Venault, Irish Valerie Maggay, Yung Chang
Summary: Zwitterionic modification using PMMA-r-PEGMA-r-PSBMA copolymer successfully reduced membrane biofouling by about 90%, showing higher total flux recovery ratio compared to commercial hydrophilic PVDF membranes in BSA filtration and water permeation tests. The zwitterionic bi-continuous microfiltration membranes have wide applications ranging from wastewater treatment to biomedical fields.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Materials Science, Biomaterials
Irish Valerie Maggay, Antoine Venault, Chi-Yao Fang, Cheng-Chen Yang, Chen-Hua Hsu, Chih-Yu Chou, Kazuhiko Ishihara, Yung Chang
Summary: By utilizing a combination of zwitterionic membranes with improved hydration properties, this study demonstrates their potential as wound-dressing materials for promoting healing of acute and chronic wounds. The membranes exhibit low biofouling, enhanced blood compatibility, and high cell viability, leading to accelerated wound healing kinetics and improved quality of new tissue.
ACS BIOMATERIALS SCIENCE & ENGINEERING
(2021)
Article
Engineering, Chemical
Chen-Hua Hsu, Antoine Venault, Haozhe Zheng, Chen-Tsyr Lo, Cheng-Chen Yang, Yung Chang
Summary: This study demonstrates that copolymers with SBMA units are ineffective in providing antifouling properties to PVDF membranes after steam sterilization, while copolymers with SBAA units remain unaffected. It is concluded that using SBAA derivatives is preferable for improving membrane fouling resistance in scenarios where steam sterilization is necessary.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Engineering, Chemical
Irish Valerie Maggay, Maria Charisma Anne M. Suba, Hana Nur Aini, Chien-Jung Wu, Shuo-Hsi Tang, Ruth B. Aquino, Yung Chang, Antoine Venault
Summary: In this study, zwitterionic polyvinylidene fluoride membranes were prepared and characterized. The membranes showed sustained antibiofouling properties even after heat treatment, indicating their potential application in various domains requiring bi-continuous microfiltration membranes that are exposed to heat.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Engineering, Chemical
Antoine Venault, Yi-Tung Chin, Irish Maggay, Chih-Chen Yeh, Yung Chang
Summary: This work investigates the association of P(S-r-AA) copolymer with PVDF in the fabrication of electrospun fibers for blood filtration, showing improved wetting of nanofibers and enhanced separation and retention of white blood cells. The results demonstrate the potential of PVDF-based nanofibers as efficient separation media for whole blood, with further efforts needed to enhance biocompatibility and red blood cell recovery.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Engineering, Chemical
Irish Valerie Maggay, Ming-Lun Yu, Da-Ming Wang, Ching-Hsueh Chiang, Yung Chang, Antoine Venault
Summary: Using 2-pyrrolidone (2P) and water as additives, skin-free polysulfone (PSf) membranes free of macrovoids were prepared by the non-solvent induced phase separation (NIPS) process. This method improves the membrane's permeability and mechanical properties while maintaining high porosity and large pores.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Engineering, Chemical
Antoine Venault, Rui-Jie Zhou, Tesfaye Abebe Galeta, Yung Chang
Summary: In this study, an amphiphilic copolymer containing sulfobetaine methacrylamide (SBAA) was designed and membranes were prepared by vapor-induced phase separation (VIPS). The results showed that the zwitterionic copolymer had a higher proportion of non-freezable water and enhanced hydration layer strength. The modification also significantly increased the membrane hydration capacity and effectively mitigated biofouling. Therefore, these membranes hold great potential for biomedical and environmental applications.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Nanoscience & Nanotechnology
Irish Valerie Maggay, Ting-Yu Liao, Antoine Venault, Hao-Tung Lin, Chih-Cheng Chao, Ta-Chin Wei, Yung Chang
Summary: The utilization of DBD plasma treatment on ePTFE film successfully modified its surface and endowed it with antibacterial properties. Both DMAEMA and TMAEMA monomers allowed ePTFE to kill Escherichia coli bacteria, while only TMAEMA-grafted ePTFE was able to release dead bacteria upon washing.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Engineering, Chemical
Antoine Venault, Hana Nur Aini, Tesfaye Abebe Galeta, Yung Chang
Summary: This study demonstrates the successful fabrication of low-biofouling homogeneous porous membranes using a non-toxic solvent DMSO and a copolymer PS-r-PEGMA. The choice of DMSO as a solvent is justified, and the addition of PS-r-PEGMA greatly improves membrane hydration and reduces biofouling.
JOURNAL OF MEMBRANE SCIENCE LETTERS
(2022)
Article
Nanoscience & Nanotechnology
Gian Vincent Dizon, Maria Thea Rane Clarin, Antoine Venault, Lemmuel Tayo, Heng-Chieh Chiang, Jie Zheng, Pierre Aimar, Yung Chang
ACS APPLIED BIO MATERIALS
(2019)
Article
Engineering, Chemical
Qing Han, Mengqing Shi, Linkai Han, Di Liu, Mingwei Tong, Yuxin Xie, Zhonghua Xiang
Summary: Developing highly efficient bifunctional oxygen electrocatalysts is crucial for zinc-air flow batteries. Metal-organic frameworks (MOFs) and covalent organic polymers (COPs) have emerged as promising alternatives due to their designable and controllable atomic-level structures. However, their catalytic performances are limited by conductivity and catalytic activity. In this study, nanosheet FeNi-MOF and iron phthalocyanine rich COP hybrid materials are assembled through the pi-pi stacking effect to create highly efficient bifunctional electrocatalysts. The resulting catalyst exhibits superior catalytic performance and stability, making it a promising candidate for zinc-air flow batteries.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Daria Grigorash, Dmytro Mihrin, Rene Wugt Larsen, Erling H. Stenby, Wei Yan
Summary: The article introduces a new approach to describe the cross-association between molecules, allowing for the simulation of weakly bound molecular complexes with different conformations in mixtures. By incorporating this approach into the equation of state, accurate predictions of vapor-liquid equilibrium and liquid-liquid equilibrium can be made. The new method is validated through experiments on alcohol and acid mixtures, with the results compared to experimental data, demonstrating its accuracy and reliability.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Mohammed Al-Sharabi, Daniel Markl, Vincenzino Vivacqua, Prince Bawuah, Natalie Maclean, Andrew P. E. York, Axel Zeitler
Summary: This study used terahertz pulsed imaging to investigate the transport process of different solvents into ceramic catalytic materials. The results showed that the heating rate of the samples influenced the water transport rate, while the viscosity of 1-octanol slowed down its transport.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Chukwunonso Anyaoku, Sati Bhattacharya, Rajarathinam Parthasarathy
Summary: This study aimed to enhance understanding of settling dynamics in viscoelastic fluids by developing a semi-empirical correlation and a dimensionless ratio, which accurately described the characteristics of settling suspensions.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Antti I. Koponen, Janika Viitala, Atsushi Tanaka, Baranivignesh Prakash, Olli-Ville Laukkanen, Ari Jasberg
Summary: This study focuses on the development of foam application chemicals for the paper and board industry. The research explores the rheology of the polyvinyl alcohol foam used in the process. Measurements were conducted to determine the foam viscosity and slip flow. The results suggest that slip flow contributes significantly to the total flow rate, and the obtained viscosity and slip models provide a solid foundation for industrial processes.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Dalei Sun, Jinghui Cai, Yating Yang, Zhiwu Liang
Summary: In this study, Fe-doped alpha-Bi2O3 catalysts with different Fe/Bi molar ratios were synthesized and utilized in the carbonylation of isobutyl amine with CO2. The results showed that Fe doping significantly enhanced the catalytic abilities of alpha-Bi2O3.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Yuan Tian, Xinxin Wang, Yanrong Liu, Wenping Hu
Summary: This paper predicts the solubility of nitrogen gas in ionic liquids (ILs) using two quantitative structure-property relationship (QSPR) models. By combining machine learning methods and ionic fragments contribution method, the accuracy and reliability of the prediction models are improved.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Liwang Wang, Wei Liu, Pan Yang, Yulong Chang, Xiaoxu Duan, Lingyu Xiao, Yaoming Hu, Jiwei Wu, Liang Ma, Hualin Wang
Summary: This study investigates the effective phase interfacial area (ae) of hydro-jet cyclones at different injection angles. The results show that a 45 degrees upward incidence angle yields the most favorable flow field characteristics for efficient mass transfer. The significant enhancement in ae of the hydro-jet cyclones offers the advantage of reducing equipment volume and cost savings.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Chuanjun Wu, Jiangzhi Chen, Jiyue Sun, I-Ming Chou, Shenghua Mei, Juezhi Lin, Lei Jiang
Summary: In this study, the solubility of H2S hydrate in water was measured using Raman spectroscopy. The results showed that the solubility increases with temperature under certain equilibrium conditions, and the solubility also depends on pressure and temperature under different equilibrium conditions. A thermodynamic model based on the van der Waals-Platteeuw theory was developed to predict the solubility, demonstrating its accuracy.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Lorenzo Brivio, Serena Meini, Mattia Sponchioni, Davide Moscatelli
Summary: This study investigates the influence of three main parameters and proposes a kinetic model to predict the optimal operating conditions for high yield of dimethyl terephthalate (DMT) in the chemical recycling process of polyethylene terephthalate (PET).
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Hongju Lin, Fanhui Liao, Yanchang Chu, Mingyu Xie, Lun Pan, Yuanyuan Wang, Lijian Leng, Donghai Xu, Le Yang, Gangfeng Ouyang
Summary: A honeycomb NiCo/C-Na catalyst with a micro-meso-macroporous structure has been fabricated and shown to have significantly higher catalytic activity for the decarboxylation of fatty acids. It also proves to be efficient in upgrading sludge HTL bio-crude, resulting in a biofuel with decreased viscosity and increased density.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Xiaoxian Li, Rui Li, Min Lin, Mingde Yang, Yulong Wu
Summary: A series of coated non-noble metal porous carbon catalysts were synthesized and applied to the aqueous-phase deoxygenation of algal bio-oil. One of the catalysts showed excellent deoxygenation selectivity and catalytic activity at 250 degrees C. The catalyst exhibited good hydrothermal stability and the reaction mechanism was proposed based on product analysis and active site analysis.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
M. V. Chudakova, M. V. Popov, P. A. Korovchenko, E. O. Pentsak, A. R. Latypova, P. B. Kurmashov, A. A. Pimenov, E. A. Tsilimbaeva, I. S. Levin, A. G. Bannov, A. V. Kleymenov
Summary: A series of catalysts with different potassium contents were prepared using solution combustion synthesis and characterized using various techniques. The results showed that the potassium content affected the phase composition and texture of the catalysts. The addition of a small amount of potassium resulted in a change in particle size distribution, leading to higher hydrogen yield. The Ni-1%K2O/Al2O3 catalyst exhibited the highest hydrogen yield at temperatures of 675 and 750 degrees Celsius.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Aliakbar Roosta, Nima Rezaei
Summary: In this study, we modified the electrolyte cubic plus association equation of state (e-CPA EoS) and integrated it with two electrical conductivity models to estimate the electrical conductivity of 11 monovalent electrolyte solutions in water. The modified e-CPA model demonstrated better performance and the hybridization with electrical conductivity models resulted in two predictive models for estimating the electrical conduction of dilute and concentrated electrolyte solutions. These predictive models showed relative average percentage deviations (AARD) of 11.15% and 13.87% over wide ranges of temperature and electrolyte concentration.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Haoren Niu, Jianzheng Wang, Qingzhu Jia, Qiang Wang, Jin Zhao, Fangyou Yan
Summary: A study developed two quantitative structure-property relationship models for the complexation performance of alpha- and beta-cyclodextrins and validated their stability and predictive ability through internal and external validation. The models showed robustness and satisfactory performance, as demonstrated by the experimental results and model validations. These models can effectively predict the binding constants between cyclodextrins and various types of molecules, providing valuable tools for cyclodextrin design.
CHEMICAL ENGINEERING SCIENCE
(2024)