Article
Chemistry, Applied
Fahhame Jazini, Mohammad Karimi, Sara Azari
Summary: In this study, a solvent exchange method was used to treat cellulose acetate/cellulose triacetate forward osmosis (CA/CTA FO) membrane, resulting in increased micropores and mesopores, and improved reverse salt flux and pure water flux by 65% and 20% respectively. The treatment also led to a 55% increase in selectivity and a 40% reduction in structural parameter, contributing to enhanced membrane performance.
CARBOHYDRATE POLYMERS
(2021)
Article
Engineering, Chemical
Xiaogeng Lin, Yasan He, Yuting Zhang, Wanyin Yu, Tao Lian
Summary: By incorporating sulfonated COFs into CTA/CA membranes, the FO performance was enhanced through increased membrane porosity, reduced structural parameter, and improved hydrophilicity. The synthesized TATP-SO3H COF with an ideal pore size showed high rejection to salt and easy water passage. XPS results confirmed the presence of H-bonding between TATP-SO3H and CTA/CA, leading to improved flux and selectivity in FO mode.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Materials Science, Multidisciplinary
Tobias Goetz, Birk Achenbach, Thomas Schiestel
Summary: A set of cellulose acetate hollow fiber membranes were manufactured using different weight ratios of acetone and the green solvent Agnique AMD 3L in dope solutions. The obtained hollow fibers revealed an asymmetric membrane structure and were tested with aqueous NaCl as the draw solution. With decreasing amounts of acetone, there was an increase in water flux and a reverse salt flux of the hollow fiber membranes annealed in water. Annealing in humid air also resulted in increased water flux and reverse salt flux compared to annealing in water. Decreasing the NaCl concentration led to an increase in the performance ratio of the hollow fiber membranes.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Multidisciplinary Sciences
Ashraf Morsy, Amira S. Mahmoud, Aya Soliman, Hesham Ibrahim, Eman Fadl
Summary: Cellulose extracted from rice straw waste was transformed into nanocellulose acetate (NCA) to prepare cellulose acetate reverse osmosis (RO) membranes. The nanocellulose had a small particle size and spherical shape, while the developed membranes had a lower contact angle and enhanced hydrophobicity. The NCA: CA ratio of 40:60% in the membranes resulted in high salt rejection and water flux, as well as resistance to protein adsorption and microbial growth.
SCIENTIFIC REPORTS
(2022)
Review
Biochemistry & Molecular Biology
Miao Tian, Tao Ma, Kunli Goh, Zhiqiang Pei, Jeng Yi Chong, Yi-Ning Wang
Summary: Forward osmosis (FO) is a promising separation technology that can overcome the challenges of pressure-driven membrane processes. FO process has significant advantages in treating feeds with high salinity and viscosity. This review focuses on the development of FO membranes and the importance of membrane selective layers in real applications.
Article
Engineering, Environmental
Tong Li, Xuelian Ba, Xiuju Wang, Zhongpeng Wang, Jie Yang, Yu Cui, Liguo Wang
Summary: In this study, MIL-53(Fe)@gamma-Al2O3 composite materials were synthesized via solvent-thermal method, and MIL-53(Fe)@gamma-Al2O3/cellulose acetate composite membranes with high desalination performance were fabricated. The results showed that the MIL-53(Fe)@gamma-Al2O3/CA membrane demonstrated better perviousness and selectivity properties compared to the MIL-53(Fe)/CA membrane, indicating a potential advantage of MOF composites in improving the desalination performance of forward osmosis membranes.
ENVIRONMENTAL ENGINEERING RESEARCH
(2023)
Article
Engineering, Chemical
Ayesha Ilyas, Yusak Hartanto, Leong Chew Lee, Ivo F. J. Vankelecom
Summary: This study explores the patterning of cellulose triacetate (CTA) membranes via modification of the conventional non-solvent induced phase inversion in forward osmosis (FO). The patterned membranes exhibit higher porosity and lower tortuosity, reducing internal concentration polarization and improving water flux and salt selectivity.
Article
Engineering, Chemical
Jorge Contreras-Martinez, Carmen Garcia-Payo, Paula Arribas, Laura Rodriguez-Saez, Amaia Lejarazu-Larranaga, Eloy Garcia-Calvo, Mohamed Khayet
Summary: End-of-life reverse osmosis membranes can be repurposed for forward osmosis applications as recycled FO and transformed recycled FO membranes, with the latter showing superior performance in terms of water permeate fluxes. The transformation process involves interfacial polymerization to further enhance FO membrane performance. This study demonstrates the feasibility of utilizing discarded RO membranes for wastewater treatment in FO technology, contributing to circular economy and sustainability in membrane science.
Article
Engineering, Chemical
Norihiro Moriyama, Hiroki Nagasawa, Masakoto Kanezashi, Toshinori Tsuru
Summary: In this study, the relationship among reverse osmosis, pervaporation, and vapor permeation for molecular separation via membranes was formulated and verified through experiments. The model also successfully predicted the permeance of water, methanol, and hydrogen under different pressure levels by considering the effect of concentration in the membrane pores.
CHEMICAL ENGINEERING SCIENCE
(2022)
Article
Chemistry, Physical
Amira S. Mohammed Ali, Moataz M. Soliman, Sherif H. Kandil, Shaker Ebrahim, Marwa Khalil
Summary: In this study, cellulose acetate (CA) silica-based nanocomposite membranes were fabricated using the dry-wet phase inversion procedure for water desalination. The effects of SNPs and MSNPs on the properties and performance of the CA membrane were investigated. The fabricated nanocomposite membranes exhibited hydrophilic surface properties and showed enhanced water flux by adding SNPs and MSNPs.
JOURNAL OF MATERIOMICS
(2022)
Article
Chemistry, Multidisciplinary
Faizal Soyekwo, Changkun Liu, Wei Huang, Hao Wen
Summary: Research on the structural stability and high permeability of membranes based on 2D materials is important for separation membranes. Anti-swelling approaches have been explored to mitigate the instability caused by aqueous-induced swelling, and 2D lamellar membranes with ion selective capabilities have been developed. The modified graphene oxide membranes exhibit durability against swelling in aqueous media, showcasing high water fluxes and effective ion permeation rates for selective separation of organic contaminants.
ADVANCED MATERIALS INTERFACES
(2021)
Article
Materials Science, Paper & Wood
Amira S. Mohammed Ali, Moataz M. Soliman, Sherif H. Kandil, Marwa M. A. Khalil
Summary: This study investigated the effect of adding Linde Type A Zeolite Nanoparticles on the performance of mixed matrix membranes for reverse osmosis. The results showed that the addition of ZNPs can improve salt rejection and water permeability.
Article
Environmental Sciences
H. Jain, A. K. Verma, R. Dhupper, S. Wadhwa, M. C. Garg
Summary: This study successfully increased the water flux and salt rejection rate of membranes using nanocomposites, achieving energy-efficient and effective desalination. The developed membranes are competitive with current FO membranes and are expected to provide an economic and efficient solution for remote areas.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2022)
Article
Engineering, Environmental
Reshma Lakra, Malini Balakrishnan, Subhankar Basu
Summary: The study demonstrated that the incorporation of AlFu MOF in the FO membrane enhanced water flux and reduced reverse salt flux. The optimal M-1-0.06 membrane showed significant enhancement in water flux and nutrient concentration from synthetic and real wastewater.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Materials Science, Paper & Wood
Omneya A. Koriem, Marwa S. Showman, Ahmed H. El-Shazly, Marwa F. Elkady
Summary: The study investigated the optimal polymeric blending ratio between cellulose acetate (CA) and polyvinylidene fluoride (PVDF) to create a blended polymeric membrane with enhanced properties. The inclusion of nano-sized metal organic framework (UiO-66 MOF) further improved the membrane performance. The resulting hybrid membrane showed promising salt rejection and permeate water flux for water desalination applications.
Article
Engineering, Chemical
Nikolaos E. Koltsaklis, Myronas Giannakakis, Michael C. Georgiadis
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2018)
Article
Engineering, Chemical
George N. Nikolaidis, Eustathios S. Kikkinides, Michael C. Georgiadis
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2018)
Article
Engineering, Chemical
Chrysovalantou Ziogou, Spyros Voutetakis, Michael C. Georgiadis, Simira Papadopoulou
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2018)
Editorial Material
Engineering, Chemical
Michael C. Georgiadis, Pei Liu, Georgios M. Kopanos
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2018)
Article
Computer Science, Interdisciplinary Applications
Nikolaos E. Koltsaklis, Ioannis Gioulekas, Michael C. Georgiadis
COMPUTERS & CHEMICAL ENGINEERING
(2018)
Article
Engineering, Chemical
Apostolos P. Elekidis, Nikolaos E. Koltsaklis, Michael C. Georgiadis
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2018)
Article
Chemistry, Physical
Erwin Lalik, Kacper Druzbicki, Gavin Irvine, Matthias Gutmann, Svemir Rudic, Pascal Manuel, Vaclav Petricek, Matthew Krzystyniak
Summary: This study provides a comprehensive characterization of structural properties and nuclear dynamics in tungstic acid (WO3•H2O), revealing inconsistencies in confined water structure definitions and failures in phonon calculations. The analysis shows a strong two-dimensional hydrogen-bonding network in tungstic acid and similarities to nuclear dynamics in water confined in single-wall carbon nanotubes (SWNT). The findings highlight the quantum character of the nuclei and the potential for improved descriptions of vibrational dynamics through computational simulations.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Chemistry, Physical
Gavin J. Irvine, Franz Demmel, Helen Y. Playford, George Carins, Martin Owen Jones, John T. S. Irvine
Summary: Ionic conductivity is an interesting phenomenon that is widely applied in advanced electrochemical devices. This study focuses on the fast ion conduction in the hydride ion conductor, barium hydride (BaH2), and discusses the influence of structure and ion interactions on macroscopic superionic conductivity.
CHEMISTRY OF MATERIALS
(2022)
Article
Chemistry, Physical
Kamil M. Nowicki, George Carins, John Bayne, Chayopas Tupberg, Gavin J. Irvine, John T. S. Irvine
Summary: Ammonia is being increasingly considered as a carrier for low carbon hydrogen, and this study demonstrates a low-carbon electrical power generation system based on a Protonic Ceramic Fuel Cell fueled by ammonia for port and maritime applications. The results show that the use of ammonia as fuel in a PCFC leads to high power density and relatively stable performance.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Chemistry, Physical
Gavin J. Irvine, John T. S. Irvine
Summary: Nitrogen-hydrogen based alkali and alkaline earth metal compounds have become important co-catalysts for ammonia synthesis. These compounds solve the issue of hydrogen poisoning by incorporating H-adatoms and reducing the inhibition of N-2 dissociation. The conductivity of H and N ions, as well as NHx species, plays a crucial role in the properties of these co-catalysts.
FARADAY DISCUSSIONS
(2023)
Article
Chemistry, Physical
John T. S. Irvine, Stephy Wilson, Sujitra Amnuaypanich, Gavin J. Irvine, Maarten C. Verbraeken, Kamil Nowicki, George M. Carins
Summary: Appropriate choice of hydrogen conducting electrolyte or substrate strongly enhances electrochemical and catalytic conversion to and from ammonia. Both protonic and hydride ionic conductors are explored in relation to ammonia conversions. Protonic conductors are suitable for direct ammonia fuel cell use while hydride ions offer a promising basis for ammonia conversion and synthesis with their high mobility and reducing properties.
FARADAY DISCUSSIONS
(2023)
Meeting Abstract
Hematology
Ana Luz Quiroga-Campano, Louise Enfield, Matthew Foster, Margaritis Kostoglou, Michael Georgiadis, Athanasios Mantalaris, Nicki Panoskaltsis
Proceedings Paper
Engineering, Environmental
Apostolos P. Elekidis, Nikolaos E. Koltsaklis, Michael C. Georgiadis
28TH EUROPEAN SYMPOSIUM ON COMPUTER AIDED PROCESS ENGINEERING
(2018)
Proceedings Paper
Engineering, Environmental
Georgios P. Georgiadis, Chrysovalantou Ziogou, Georgios Kopanos, Manuel Garcia, Daniel Cabo, Miguel Lopez, Michael C. Georgiadis
28TH EUROPEAN SYMPOSIUM ON COMPUTER AIDED PROCESS ENGINEERING
(2018)
Article
Engineering, Chemical
Anastasia Chatzikontidou, Pantelis Longinidis, Panagiotis Tsiakis, Michael C. Georgiadis
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2017)