Article
Materials Science, Multidisciplinary
Fatma Seden Tekin, P. Zeynep Culfaz-Emecen
Summary: The effects of three different solvent systems on the preparation of cellulose acetate membranes by phase inversion were investigated. Acetone as cosolvent resulted in an asymmetric membrane morphology, while acetic acid led to a loose, almost isotropic structure. The phase inversion rate was significantly lower when acetic acid was used as cosolvent, mainly due to its high viscosity.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Materials Science, Paper & Wood
Ana Kramar, Irene Rodriguez Ortega, Gustavo Gonzalez-Gaitano, Javier Gonzalez-Benito
Summary: Variations in processing conditions can modify the properties of polymeric film. This study explores the influence of different casting surfaces and humidity on cellulose acetate (CA) film preparation using a solution casting method. The use of patterned surfaces (PTFE dishes) and different humidity levels affect the appearance and properties of the films. The micropatterning effect can be utilized as a humidity sensor in food packaging.
Article
Engineering, Chemical
Hong-Li Yang, Min-Hsun Wu, Micah Belle Marie Yap Ang, Chi-Lan Li, Hui-An Tsai, Kueir-Rarn Lee
Summary: The morphology of a membrane is crucial for its separation performance, and different casting solutions lead to membranes with different morphology and pores. By incorporating carbon quantum dots and selecting suitable solvents, the physicochemical properties of the membrane can be tailored. Addition of carbon quantum dots and different solvents increases surface porosity and pore size of the membrane, while decreasing skin layer thickness.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2023)
Article
Agricultural Engineering
Junkang Lin, Chenglong Fu, Wenchao Zeng, Dong Wang, Fang Huang, Shan Lin, Shilin Cao, Lihui Chen, Yonghao Ni, Liulian Huang
Summary: This study developed a simple strategy to fabricate cellulose acetate ultrafiltration membranes by adding methyl acetate (MAC) to N, N-dimethylacetamide (DMAc), aiming to improve their performance. The results showed that adjusting the DMAc to MAC ratio could regulate the pore morphologies of the membrane. Under optimal conditions, the pure water flux reached 188.0 L/m2h, with a BSA rejection ratio 20% higher than the control. Moreover, the anti-fouling and long-term stability of the ultrafiltration membranes were significantly improved.
INDUSTRIAL CROPS AND PRODUCTS
(2023)
Article
Polymer Science
Azelia Wulan Cindradewi, Rajkumar Bandi, Chan-Woo Park, Ji-Soo Park, Eun-Ah Lee, Jeong-Ki Kim, Gu-Joong Kwon, Song-Yi Han, Seung-Hwan Lee
Summary: In this study, cellulose acetate (CA)/cellulose nanofibril (CNF) film was prepared using eco-friendly plasticizers and varying CNF ratio. The dispersion of CNF in NMP was found to be better, leading to significant improvements in tensile strength and elastic modulus. The addition of CNF up to 5 phr loading enhanced the mechanical properties of the film composites.
Article
Engineering, Chemical
Hong-Li Yang, Micah Belle Marie Yap Ang, Hui-An Tsai, Kueir-Rarn Lee, Juin-Yih Lai
Summary: The influence of adding carbon quantum dots (CQDs) on the phase separation behavior of cellulose acetate (CA) solution was investigated. It was found that CQDs can affect the kinetics and thermodynamics of the system, leading to changes in the membrane structure and performance.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2022)
Article
Materials Science, Multidisciplinary
M. Gouda, Mai M. Khalaf, Abraham Elmushyakhi, Manal F. Abou Taleb, Hany M. Abd El-Lateef
Summary: This study developed wound bandages with suitable performance to accelerate the healing process. Biocompatible, nontoxic, and thermally stable materials were used to load the drug onto cellulose acetate. The results showed that the bandages had good surface morphology, uniform distribution of crystalline materials, and positive effects on cell viability at extremely low doses.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Polymer Science
Aris Doyan, Chew Lee Leong, Muhammad Roil Bilad, Kiki Adi Kurnia, Susilawati Susilawati, Saiful Prayogi, Thanitporn Narkkun, Kajornsak Faungnawakij
Summary: The study successfully utilized waste cigarette butt to create an eco-friendly CA membrane for treating oil/water emulsion with a rejection rate of over 94%. The CA membrane showed good structural properties and hydrophilicity characteristics compared to the established PVDF and PSF membranes.
Article
Polymer Science
Zhixiang Cui, Mangao Yan, Qianting Wang, Junhui Si, Xiaolong Liu
Summary: In recent years, wastewater treatment has become a global challenge due to environmental pollution. A porous deacetylated cellulose acetate (d-CA) casting membrane was successfully fabricated using solution casting, pore-forming agent leaching, and deacetylation treatment. The membrane exhibited superhydrophilic and superoleophilic properties in air, oleophobic properties in water, and superhydrophilic properties in oil. The membrane showed high water and oil separation fluxes with high separation efficiency, as well as excellent self-cleaning capability. The results suggest that the d-CA casting membrane has great potential for oil/water separation applications and can be mass-produced due to its simple production process.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Engineering, Chemical
Selda Erkoc-Ilter
Summary: Zwitterionic hybrid cellulose acetate membranes were produced using a modified NIPS process with the addition of a zwitterionic compound. The membranes showed improved flux and antifouling performance. XPS, SEM, and TGA confirmed the successful incorporation of the zwitterionic compound into the membranes. The hybrid membranes exhibited increased permeate flux and maintained good salt rejection in filtration tests.
Article
Engineering, Chemical
Anrong Yao, Yongqi Yan, Lin Tan, Yidong Shi, Mi Zhou, Yong Zhang, Puxin Zhu, Shijun Huang
Summary: Coating cellulose nanocrystals with a thin layer of polydopamine significantly enhances the performance of composite membranes, including filtration capacity, antifouling properties, and mechanical strength. PDA@CNCs/CA composite membrane shows broad application prospects in various fields.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Piotr K. Szewczyk, Krzysztof Berniak, Joanna Knapczyk-Korczak, Joanna E. Karbowniczek, Mateusz M. Marzec, Andrzej Bernasik, Urszula Stachewicz
Summary: In this study, cellulose acetate (CA) electrospun fibers were found to possess piezoelectric properties, allowing for the simulation of a natural electrical environment that promotes bone cell attachment and growth. The combination of high surface potential and well-developed fibrous structure of CA scaffolds led to the formation of a vast 3D network of collagen produced by osteoblasts after 7 days of in vitro culture. Therefore, CA scaffolds show advantages as a bone replacement material when long-lasting structural support is needed.
Article
Materials Science, Multidisciplinary
Natalia Cristina Fontao, Michaela Wilhelm, Kurosch Rezwan
Summary: Asymmetric porous SiOC membranes with different pore characteristics and morphology were successfully produced using the phase inversion tape casting technique. By adjusting the pyrolysis temperature and slurry composition, the structure and surface characteristics of the membrane can be tailored, resulting in improved mechanical strength and water permeation fluxes. The asymmetric structure of the membranes was found to minimize mass transport limitations, showing advantages in water filtration applications.
MATERIALS & DESIGN
(2021)
Article
Materials Science, Paper & Wood
Xue Shao, Xiaoping Chen, Zhiwei Qiu, Guanglei Yao, Fengxian Qiu, Tao Zhang
Summary: Hierarchical porous magnesium oxide modified cellulose acetate membranes (MgO@CAM) were prepared for efficient tellurium separation in wastewater, showing excellent separation efficiency and antifouling performance. The membranes exhibited good performance in acidic environments and in the presence of multiple coexisting ions, indicating promising applications in water treatment for tellurium separation.
Article
Environmental Sciences
Neeraja Bose, Kalaivizhi Rajappan, Sivasankari Selvam, Gowriboy Natesan, Balaganesh Danagody
Summary: The triple-layered sandwich membrane Cs-CeO2@PU-CA membrane is cast through the phase inversion technique for chromium removal. The incorporation of cerium oxide nanoparticles creates pores on the surface of the membrane, resulting in higher porosity and better mechanical strength. The efficiency in adsorption is due to the presence of hydroxyl, carboxyl, and hydrophilic group in the membrane.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Engineering, Chemical
M. Goktug Ahunbay, S. Birgul Tantekin-Ersolmaz, William B. Krantz
Review
Engineering, Chemical
Lee Nuang Sim, Tzyy Haur Chong, Amir Hooshang Taheri, S. T. V. Sim, Li Lai, William B. Krantz, Anthony G. Fane
Article
Engineering, Chemical
Tzyy Haur Chong, William B. Krantz
Article
Engineering, Chemical
Melike Begum Tanis-Kanbur, Farhad Zamani, William B. Krantz, Xiao Hu, Jia Wei Chew
JOURNAL OF MEMBRANE SCIENCE
(2019)
Article
Engineering, Chemical
A. H. Taheri, L. N. Sim, W. B. Krantz, A. G. Fane
SEPARATION AND PURIFICATION TECHNOLOGY
(2019)
Article
Engineering, Chemical
Xuesong Li, Qing Li, Wangxi Fang, Rong Wang, William B. Krantz
JOURNAL OF MEMBRANE SCIENCE
(2019)
Article
Engineering, Chemical
Omkar D. Supekar, Danielle J. Park, Alan R. Greenberg, Juliet T. Gopinath, Victor M. Bright
JOURNAL OF MEMBRANE SCIENCE
(2020)
Article
Engineering, Chemical
Li Lai, Lee Nuang Sim, William B. Krantz, Tzyy Haur Chong
JOURNAL OF MEMBRANE SCIENCE
(2020)
Article
Engineering, Chemical
Masoud Aghajani, Alan R. Greenberg, Yifu Ding
JOURNAL OF MEMBRANE SCIENCE
(2020)
Article
Materials Science, Coatings & Films
Brian C. Welch, Olivia M. McIntee, Anand B. Ode, Bonnie B. McKenzie, Alan R. Greenberg, Victor M. Bright, Steven M. George
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A
(2020)
Article
Engineering, Chemical
Danielle J. Park, Omkar D. Supekar, Alan R. Greenberg, Juliet T. Gopinath, Victor M. Bright
Summary: Chemical characterization and real-time monitoring of scaling and removal processes in a bench-scale RO system were conducted using Raman spectroscopy. The results showed that changes in Raman intensity were a more sensitive indicator of scale removal on the membrane surface, providing crucial chemical composition and spatial distribution information.
Article
Engineering, Chemical
Mohamed Aslam, Filicia Wicaksana, Mohammed Farid, Anthony Wong, William B. Krantz
Summary: In this study, a transient back-pressure (water hammer) was applied to mitigate fouling in ultrafiltration of whey proteins. The water hammer effect was effective in reducing membrane fouling, with up to 84% flux enhancement achievable depending on operating conditions. However, the effectiveness of water hammer decreased at high transmembrane pressures and high feed concentrations where fouling was more severe.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Biographical-Item
Engineering, Chemical
William B. Krantz
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Engineering, Chemical
William B. Krantz, Michael Dy Cham Lua, Joselieto Luy Absalon, Babu Narayanswamy
Summary: Determining pore size is crucial for evaluating the performance of porous materials like membranes. Evapoporometry, a relatively new characterization method based on the Kelvin equation, predicts vapor-pressure reduction of a volatile wetting liquid in the pores. In this paper, the development of an automated evapoporometer instrument is described, which eliminates the need for user intervention once the sample is placed in the test cell.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Engineering, Chemical
William B. Krantz, Filicia Wicaksana, Mohamed Aslam, Anthony Wong, Mohammed Farid
Summary: Membrane fouling is a common issue in ultrafiltration, but recent studies have shown that water-hammer pulsing can reduce fouling. A predictive model has been developed to understand the mechanism behind this. The model suggests that the enhanced shear stress caused by the boundary-layer flow generated by pressure-front reflection can effectively remove fouling deposits. Experiments with a whey-protein feed showed a significant improvement in flux, with a fractional flux increase ranging from 10.7% to 124% and an average increase of 51.2%.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Engineering, Chemical
Jiawei Hou, Shixuan Guo, Nigel Graham, Wenzheng Yu, Kening Sun, Ting Liu
Summary: A novel 2D composite membrane based on r-HGO and MXene materials was developed, demonstrating exceptional performance for water treatment in terms of permeability, pollutant rejection, and physical stability. The optimization of preparation conditions and material proportions can result in high water flux and efficient removal of pollutants.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Retraction
Engineering, Chemical
Chang Liu, Jinghong Liu, Liang Zhu, Shanfu Tang, Huixin Xiong
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Rui Gao, Caihong Liu, Andreia F. Faria, Qiang He, Chun Yang, Jun Ma
Summary: A novel copolymer architecture has been developed to address biofouling concerns in thin-film composite (TFC) membranes by integrating anti-fouling, bactericidal, and fouling-release functions. The multifunctional membrane demonstrates promising anti-adhesive properties, self-cleaning ability, and high flux recovery rate.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Alexander T. Bridge, Noah P. Wamble, Matthew S. Santoso, Joan F. Brennecke, Benny D. Freeman
Summary: This study demonstrates the reproducible preparation of high-flux defect-free asymmetric gas separation membranes using Cyrene(TM) as a majority dope formulation component. By adjusting the volume ratios of Cyrene(TM) and THF, as well as the concentrations of Matrimid(R) and the dry step time, optimal membrane performance is achieved.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Alessandra Imbrogno, Han Ya Lin, Babak Minofar, Andrea Iris Schaefer
Summary: In this study, a composite nanofiber membrane containing cross-linked beta-cyclodextrin-epichlorohydrin was prepared and evaluated for the removal of steroid hormones. The results showed that the membrane had high adsorption capacity and the ability to form a specific inclusion complex interaction with the hormones, indicating its potential application in hormone removal.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Bora Shin, Jaewon Shin, Yanuar Chandra Wirasembada, Ki Young Park, Jinwoo Cho
Summary: This study develops a mathematical model to estimate the initial flux of volatile fatty acids in the direct contact membrane distillation process. It identifies the parameters affecting the flux and their relationship with pH.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Yi-Jui Yeh, Jr Rong Liou, Wei Lin, Kuo-Lun Tung, Wei-Hung Chiang
Summary: This study demonstrates an effective plasma engineering method to create nitrogen-doped graphene quantum dot (NGQD)-inorganic nanocomposites for tunable molecular separation. The composite materials show high separation efficiency and controllable nanopore structures, making them potentially valuable for various applications.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Horacio Lopez-Marques, Kristofer L. Gleason, Manuel Aguilar-Vega, Rita Sulub-Sulub, J. Ehren Eichler, Hyeonji Oh, C. Buddie Mullins, Benny D. Freeman, Manish Kumar
Summary: In this study, water transport properties in Carbon Molecular Sieve (CMS) membranes were investigated. It was found that membranes synthesized at different pyrolysis temperatures exhibited varying water permeabilities. Compared to other polymeric materials, CMS membranes showed high water permeability, indicating potential for dehydration applications.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Dmitry A. Alentiev, Roman Yu. Nikiforov, Marina A. Rudakova, Danil P. Zarezin, Maxim A. Topchiy, Andrey F. Asachenko, Nikolay A. Belov, Maxim Bermeshev
Summary: A series of new norbornene-type monomers containing linear and branched substituents were synthesized, and robust thin membranes were prepared by vinyl-addition polymerization. Gas separation performance for the synthesized polymers was evaluated, and the structure of substituent side chains was found to significantly affect gas permeability and CO2 facilitated transport.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Lei Yan, Qi Zhang, Ze Zhang, Gui-Jie Li, Yi Jin, Xin-Lin Zhang, Yan-Yun Sun
Summary: In this study, a continuous, stable and fast ion transport channel was established through in-situ guided cross-linking of zinc alginate hydrogels on a porous membrane, overcoming the negative pore effect and effectively inhibiting the dendrite growth of zinc anodes and interfacial side reactions.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Yuqing Zhang, Ailing Zhang, Huiyang He, Yuting Fan, Yongjiang Li, Song Wang, Sanxi Li
Summary: The Langmuir-Blodgett self-assembly process is used to create an ordered SPEEK membrane, which enhances the proton conductivity by three times compared to conventional solution casting method.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Hasan Ismaeel, David Gibson, Eleonora Ricci, Maria Grazia De Angelis
Summary: In this study, a machine learning-based group contribution method (ML-GC) was developed to predict pure polymer parameters and successfully applied to predict gas solubility and gas solubility isotherms in glassy polymeric membranes. The model showed satisfactory performance on a small dataset, but has the potential to provide more accurate predictions for a wider range of polymers as more data becomes available.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Yi Ji, Yu Sun, Huilin Li, Qiang Fu, Yan Zhang
Summary: Previous studies have shown that vibration- or rotation-based techniques can effectively mitigate fouling during membrane filtration. However, it is difficult to incorporate these techniques with spiral wound modules (SWMs) widely used in water and wastewater treatment. This study developed a prototype membrane system to accommodate angular vibrations with a modified SWM, and experimental results showed that applying angular vibrations can effectively control algal fouling in an SWM with lower energy consumption compared to traditional methods.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Lakshmeesha Upadhayaya, Abaynesh Yihdego Gebreyohannes, Muhammad Wakil Shahzad, Usman T. Syed, Sandra L. Aristizabal, Radoslaw Gorecki, Suzana P. Nunes
Summary: Increasing temperatures worldwide pose a significant health risk, exacerbated by high humidity. Conventional air conditioners contribute heavily to carbon dioxide emissions, with dehumidification being a major factor. Membrane-based dehumidification system offers energy efficiency and non-toxic water vapor removal. This study demonstrates a membrane dehumidification system with polymeric hollow fibers coated with a green polyphenol coating, showing remarkable water vapor transport rate and selectivity. Long-term testing reveals minimal decline in vapor transport and a 4-5 times higher coefficient of performance (COP) compared to conventional dehumidifiers, making it a highly competitive, energy-saving device with reduced emissions and a smaller footprint.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Zhengzhong Zhou, Xue Zhu, Yi Yuan, Shaoqiang Wang, Xiaoshan Meng, Taoli Huhe, Qian Wang
Summary: In this study, lignin, a biomass material, was chemically modified and utilized in the interfacial polymerization process to improve the performance of nanofiltration membranes. The modified membranes showed enhanced hydrophilicity and anti-fouling properties, and the optimization of membrane pore size increased permeability. The study also demonstrated the potential application of the membranes in biogas slurry valorization.
JOURNAL OF MEMBRANE SCIENCE
(2024)