Article
Engineering, Chemical
I Salmeron-Sanchez, J. Asenjo-Pascual, J. R. Aviles-Moreno, J. C. Perez-Flores, P. Mauleon, P. Ocon
Summary: This study modified four commercially available ion exchange membranes to reduce the crossover phenomena of redox active species in AORFB systems. The modified membranes showed optimal properties with minimal impact on ion conductivity, making them appealing for AORFB applications. Additionally, the modified anionic exchange membranes demonstrated increased ion exchange capacity and greater double layer stability compared to cationic exchange membranes.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Review
Engineering, Chemical
Amanda Grylewicz, Sylwia Mozia
Summary: Polymeric membranes are commonly used in water and wastewater treatment, but pressure-driven membranes are prone to fouling and biofouling. On the other hand, forward osmosis membranes are less affected by fouling but have limited potential in wastewater treatment due to low permeation. The use of various nano-materials has been proposed to enhance membrane performance in terms of permeability, antifouling/antibiofouling resistance, and separation properties.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Engineering, Chemical
Lunhao Zhi, Siyu Li, Xueqin He, Yunbo Feng, Chong Cheng, Shuang Li, Shudong Sun, Changsheng Zhao
Summary: Extracorporeal membrane oxygenation (ECMO) is a crucial therapy for patients with severe cardiopulmonary failure, but the membrane oxygenator faces challenges in balancing anticoagulation and hemorrhage risks, affecting its lifespan and patient safety. This study successfully introduces poly (1-vinyl-2-pyrrolidone) (PVP) and poly (acrylic acid) (PAA) into polyethersulfone (PES) membranes, resulting in modified membranes with favorable hemocompatibility and improved CO2 and O2 permeabilities. The modified membranes demonstrate better oxygenation and CO2 removal performances in an ECMO-simulated gas-liquid contactor circulation device. The simple, low-cost, and easily industrialized membrane modification methods in this study have practical guiding significance for future membrane research and oxygenator applications.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Materials Science, Composites
Zhengfei Wu, Yi Wang, Liangliang Dong, Mingqing Chen, Dongjian Shi
Summary: In this study, Janus membranes with asymmetric wettability were fabricated using a facile polydopamine (PDA) controlled modification method. These membranes showed excellent separation selectivity and high permeability for various oil/water mixtures. The membranes exhibited good reusability and could be applied in complex oil/water separation systems.
COMPOSITES COMMUNICATIONS
(2023)
Article
Biochemistry & Molecular Biology
Fang Hu, Yifa Huang, Yanting Huang, Junming Tang, Jiugang Hu
Summary: A unique facilitation on the transport flux of Cu(II) was achieved by modifying polymer inclusion membranes (PIMs). The modified PIMs showed an increase in Cu(II) transport flux with the help of ethanol or Versatic acid 10 modifiers. The modification improved the hydrophilicity of the PIMs, allowing better accessibility of Cu(II) across the membranes.
Review
Polymer Science
Gowthami Palanisamy, Tae Hwan Oh, Sadhasivam Thangarasu
Summary: A direct methanol fuel cell (DMFC) is an excellent energy device that converts methanol to energy with high efficiency. Commercial membranes for DMFCs are expensive and have high methanol permeability, but novel developments using cost-effective cellulose-based materials have improved performance. In this review, the advances and utilization of different cellulose materials as proton-exchange membranes (PEMs) for DMFCs are discussed, including cellulose derivatives and composites with inorganic additives.
Article
Engineering, Environmental
Shusu Shen, Honglin Li, Yang Shen, Renbi Bai, Ganwei Zhang
Summary: In this study, NM88B was fixed onto PVDF membranes by PEI and subsequently grafted with FPEOAA to improve hydrophilicity and oil resistance. The modified membranes showed high water flux and excellent oil-water separation performance, as well as good reusability.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Mechanics
Yaoqi Huang, Vineeth Chandran Suja, Layaa Amirthalingam, Gerald G. Fuller
Summary: This paper investigates the effect of salt on the mechanics of phospholipid bilayers through a combination of experiments and numerical modeling. The study reveals that salt affects the formation and separation velocity, contact angle, and radius of bilayers. The findings have important implications for cellular function and viability.
Article
Biochemistry & Molecular Biology
Dung M. Nguyen, Hwoi Chan Kwon, Tsung-Yu Chen
Summary: Intracellular divalent cations play a crucial role in regulating the molecular function of TMEM16 family members, with alkaline earth divalent cations in mM concentrations potentiating the effects on TMEM16A and altering the cation/anion selectivity of TMEM16F. This potentiation effect may be due to an increase in local concentrations of permeant ions via changes in pore electrostatic potential, possibly through interaction with phospholipid head groups in or near the pore.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Engineering, Chemical
Shougang Fan, Zhihao Yu, Xi Wang, Yiyi Tao, Huaiqi Shao, Mingce Long, Xiaoyan Guo
Summary: This study successfully fabricated a graphene oxide (GO)-based nanocomposite membrane through layer-by-layer self-assembly, which significantly improved the membrane's permeability and antifouling performance. The nanocomposite membrane exhibited enhanced water flux and antifouling performance, and maintained structural stability even after physicochemical cleaning.
Article
Materials Science, Multidisciplinary
Zhuang Rao, Airong Zhang, Xiaoling Liu, Deyu Zhu, Guoqing Wang, Minqiu Lan, Zhengyun Wang, Lipei Jiang, Beibei Tang, Hongfang Liu
Summary: Surface -SO3H and -NH2 acid-base pair modified graphene oxide (BAGO) was constructed by polydopamine (PDA) coating onto GO and reaction with 2,2'-benzidinedisulfonic acid (BA). The composite proton exchange membrane (PEM) with increased selectivity and enhanced proton conductivity and methanol barrier effect was prepared by incorporating BAGO into the Nafion matrix. The results showed improved performance of the composite PEM in terms of proton conductivity and power density in a direct methanol fuel cell.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Engineering, Chemical
Cara P. Kilmartin, Jonathan Aubuchon Ouimet, Alexander W. Dowling, William A. Phillip
Summary: Improved solute selectivity can be achieved through staged diafiltration processes. Different configurations in the cascades can reduce diafiltrate consumption and improve solute separation. Asymmetric cascades show potential in improving recovery and purity of solutes in effluent streams.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2021)
Article
Engineering, Chemical
Yahua Lu, Miao Zhang, Jian Chang, Anirban Sikdar, Naixin Wang, Quan-Fu An, Jiayin Yuan
Summary: In this study, nanoporous 2D/2D heterostructure membranes were elaborately constructed via solution-phase assembly of oppositely charged MXene and modified layered double hydroxide (MLDH) nanosheets. These membranes successfully address the challenges faced by 2D MXene-based lamellar membranes in water treatment, and achieve a threefold increase in permeability without compromising rejection.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Engineering, Chemical
Eid H. Alosaimi, Ibrahim Hotan Alsohaimi, Hassan M. A. Hassan, Qiao Chen, Saad Melhi, Ayman Abdelaziz Younes
Summary: A series of sulfonated polyethersulfone (SPES) membranes containing different concentrations of SBA-15-g-PSPA were fabricated using a non-solvent induced phase separation (NIPS) process for ultrafiltration (UF) applications. SBA-15 was modified with 3-methacrylate-propyltrimethoxysilane (MPS) and further functionalized with charge tailorable polymer chains. The addition of surface modified SBA-15-g-PSPA nanoparticles significantly improved the membrane's water permeability, hydrophilicity, and antifouling properties. The composite SPES membranes exhibited higher pure water fluxes compared to the pristine SPES membrane, with the inclusion of SBA-15-g-PSPA nanoparticles showing promising potential for ultrafiltration applications.
CHINESE JOURNAL OF CHEMICAL ENGINEERING
(2023)
Article
Polymer Science
Aliaksandr Burko, Siarhei Zavatski, Arina Baturova, Makhina Kholiboeva, Julia Kozina, Kseniya Kravtsunova, Vladimir Popov, Artem Gudok, Sergey Dubkov, Stanislav Khartov, Hanna Bandarenka
Summary: In this study, a filtering material for facial masks was developed, which can trap and deactivate bacteria under LED or sunlight irradiation. This was achieved by modifying a composite membrane with porous polymer, photocatalytic TiO2, and plasmonic Ag nanoparticles. The modified polymer membrane effectively prevented the penetration of bacteria and inhibited their growth when exposed to LED or sunlight, as compared to standard facial medical masks.