Review
Chemistry, Applied
Javad Farahbakhsh, Vahid Vatanpour, Mahsa Khoshnam, Masoumeh Zargar
Summary: Thin film composite (TFC) membranes have been improved through modifications in materials, such as the use of alternative monomers like MPD, PIP and TMC, which contribute to enhancing the physicochemical properties and separation efficiency of the membranes.
REACTIVE & FUNCTIONAL POLYMERS
(2021)
Article
Engineering, Environmental
Soheil Hadadpour, Iman Tavakol, Zahra Shabani, Toraj Mohammadi, Maryam Ahmadzadeh Tofighy, Soleyman Sahebi
Summary: In this study, charcoal-based carbon nanomaterial was incorporated into thin film composite membranes to enhance forward osmosis performance. The addition of CNM led to improved water flux and reduced structural parameter of the membranes. The membrane with 0.5 wt% CNM showed the best performance with significantly increased water flux in both FO and PRO modes.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Engineering, Chemical
Die Ling Zhao, Qipeng Zhao, Hongjun Lin, Shing Bor Chen, Tai-Shung Chung
Summary: Polydopamine (PDA) is commonly used to modify membrane surfaces for better hydrophilicity and reduced fouling. However, traditional modifications only happen on the surface and can lower water permeance and salt rejection. In this study, a pressure assisted coating method was used to overcome these issues by adjusting the inner structure of membranes during PDA modification. By coating with PDA under 2 bar pressure for 3 hours, the resulting membranes showed improved water permeance and salt rejection to 3.31 LMH/bar and 98.95%, respectively. The PDA modified membranes also exhibited excellent antifouling behavior when exposed to alginate sodium. Overall, this newly developed PDA coating method effectively enhances the desalination performance of TFC membranes for water treatment and reuse.
Review
Engineering, Chemical
Mohammad Kahrizi, Ralph Rolly Gonzales, Lingxue Kong, Hideto Matsuyama, Peng Lu, Jiuyang Lin, Shuaifei Zhao
Summary: This review clarifies the individual roles of the substrate surface and the substrate bulk in thin-film composite forward osmosis membrane performance. It analyzes the impact of substrate surface properties on polyamide layer formation and evaluates how substrate bulk properties affect the membrane structural parameter. The review highlights the significant roles of substrate properties in developing high-performance TFC membranes.
Article
Engineering, Chemical
Jingge Ju, Yuting Huang, Mengyao Liu, Nan Xie, Jiali Shi, Yiran Fan, Yixia Zhao, Weimin Kang
Summary: We report a Janus nanofiber membrane with excellent photothermal conversion performance, anti-fouling performance, and durability. The hydrophilic photothermal layer captures solar energy, repels pollutants, and promotes steam flow, while the hydrophobic layer ensures long-term durability. The membrane achieves a permeate flux of 1.05 L.m(-2).h(-1) and a salt rejection of > 99.99% under 1 kW.m(-2) light intensity. Even after continuous treatment of pollutant-containing feed solutions for 60 h, the membrane maintains a stable permeate flux of 1.035 L.m(-2).h(-1) and a salt rejection of > 99.98%. This CB-PVA/PTFE photothermal nanofiber membrane shows promising potential for generating fresh water from feed solutions containing various pollutants in SDMD systems.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Environmental Sciences
Meng-Na Li, Xiu-Juan Chen, Zhang-Hong Wan, Shu-Guang Wang, Xue-Fei Sun
Summary: This study successfully prepared a novel FO-PES-MoS2 TFC membrane, achieving optimal desalination performance by modifying the MoS2 content, increasing water flux and reducing salt flux, demonstrating promising properties for further development in saline water desalination.
Article
Engineering, Chemical
Anelyn P. Bendoy, Hana G. Zeweldi, Myoung Jun Park, Ho Kyong Shon, Hern Kim, Wook-Jin Chung, Grace M. Nisola
Summary: The development of membranes with enhanced separation and transport properties, specifically by incorporating silicene into thin film composite (TFC) forward osmosis (FO) membranes, has shown promising results in improving membrane performance and water permeability.
Article
Engineering, Environmental
Zhimeng Sun, Shihe Zhang, Zhongguo Zhang, Yiyong Yang, Chunhui Zhang, Yu Qian, Xiaojing Ren
Summary: In this study, a forward osmosis composite membrane was prepared using poly(m-phenylene isophthalamide) (PMIA) as the substrate and embedded in a high-porosity polyester mesh to form a support layer through an interfacial polymerization process. The effects of preparation conditions on performance were investigated. The self-made PMIA TFC-FO membrane showed excellent hydrophilicity and fouling resistance, making it a suitable candidate for high water flux and selectivity in seawater desalination.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Engineering, Chemical
Xinjian Tang, Wenxiu Hu, Xiaoxue Ke, Yuming Zheng, Qingchun Ge
Summary: In this study, a series of metal-ion modified polyamide membranes were synthesized, which showed improved antibacterial properties and desalination performance. The metal ions could destroy the bacterial phospholipid layer, enhancing the bactericidal efficacy. Moreover, the metal ions on the membrane surface could be regenerated by immersing the membranes in nitrate solutions. Additionally, the metal-ion treated membranes exhibited significantly increased water permeability and selectivity.
Article
Chemistry, Physical
Huijie Liu, Jiatai Gu, Ye Liu, Lei Yang, Liming Wang, Jianyong Yu, Xiaohong Qin
Summary: Janus electrospinning nanofiber membranes with improved durability and sustainability, as well as self-healing and reconfiguration abilities, have been successfully fabricated using dynamic Diels-Alder (DA) bond. This work presents promising new design principles and materials for interfacial solar seawater desalination.
Article
Engineering, Chemical
Dujian Qin, Rui Zhang, Bing Cao, Pei Li
Summary: A high-quality polymer nanofiber membrane was produced through modification treatment, and excellent pervaporation desalination properties were achieved using a novel composite membrane preparation method, demonstrating promising application potential under high-temperature conditions.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Nanoscience & Nanotechnology
Wen Zhou, Xinxin Zhang, Xiaobao Gong, Mingle Ding, Jianyong Yu, Shichao Zhang, Bin Ding
Summary: In this study, a unique and simple method was used to assemble environmentally friendly polyamide nanofiber membranes for seawater desalination. The membranes demonstrated impressive performance in terms of salt rejection and water flux, highlighting their potential for practical applications in water purification.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Nanoscience & Nanotechnology
Wen Zhou, Xinxin Zhang, Xiaobao Gong, Mingle Ding, Jianyong Yu, Shichao Zhang, Bin Ding
Summary: Seawater desalination is a promising solution to freshwater scarcity, but existing membranes face challenges such as poor channel interconnectivity and tradeoff between salt rejection and water flux. This study presents a one-step green solvent/nonsolvent spinning method to assemble environmentally friendly polyamide nanofiber membranes for seawater desalination. The membranes show highly interconnective amphiphobic channels and stable bonding structure, resulting in impressive salt rejection and permeate flux.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Longxin Jiang, Masoud Rastgar, Ameneh Mohammadnezhad, Chunrong Wang, Mohtada Sadrzadeh
Summary: Novel lignin-based membranes with excellent water permeability and salt rejection characteristics were developed for forward osmosis (FO) processes. The LTFC-0.5 membrane demonstrated the highest water flux and lowest salt flux among all fabricated membranes.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Engineering, Chemical
Ling Wang, Mohammad Kahrizi, Peng Lu, Yayu Wei, Hong Yang, Yifei Yu, Linghui Wang, Yanshuo Li, Shuaifei Zhao
Summary: Support layer properties play a critical role in the desalination performance of TFC membranes by impacting the formed rejection layer and water transport. Adjusting the support layer properties can enhance water permeability and antifouling capabilities of TFC membranes.
Article
Chemistry, Applied
Issa Ndiaye, Sebastien Vaudreuil, Tijani Bounahmidi
Summary: Forward osmosis is a process that induces water transport across a semipermeable membrane, resulting in dilution and recovery of the draw solution. It requires lower energy compared to reverse osmosis but faces challenges such as membrane performance issues.
SEPARATION AND PURIFICATION REVIEWS
(2021)
Review
Engineering, Chemical
Issa Ndiaye, Imane Chaoui, Sebastien Vaudreuil, Tijani Bounahmidi
Summary: This study compares the techniques used to prepare the support layer of polyamide-thin-film composite forward osmosis membranes, finding that electrospinning produces membranes with lower structural parameters compared to conventional techniques. The internal structure of the support layer has a greater impact on FO water flux than the preparation materials.
POLYMER ENGINEERING AND SCIENCE
(2021)
Article
Engineering, Chemical
Imane Chaoui, Issa Ndiaye, Jaouad Eddouibi, Souad Abderafi, Sebastien Vaudreuil, Tijani Bounahmidi
Summary: This study investigated the impact of operating conditions on the performance of forward osmosis (FO) technology and internal concentration polarization (ICP) phenomena. By using simulation and experimental methods, the effects of concentration, temperature, and flowrate on the water flux and solute flux were evaluated for sodium chloride and ammonium bicarbonate as draw solutes. The results showed significant differences between predicted and experimental results, indicating the importance of considering operating conditions in FO processes.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2022)
Article
Engineering, Chemical
Issa Ndiaye, Imane Chaoui, Sebastien Vaudreuil, Tijani Bounahmidi
Summary: This study evaluated the accuracy of Tiraferri's model in predicting water flux through FO membranes, utilizing a database of membrane parameters and experimental water fluxes. The predicted water fluxes mostly agreed with experimental data, with low error caused by ECP, especially in the use of deionized water as feed solution in FO mode. Additionally, membranes with high water or salt permeability showed higher ECP, indicating the importance of membrane properties in flux prediction accuracy.
DESALINATION AND WATER TREATMENT
(2021)
Article
Engineering, Chemical
Imane Chaoui, Issa Ndiaye, Souad Abderafi, Sebastien Vaudreuil, Tijani Bounahmidi
Summary: The study predicted the productivity of forward osmosis (FO) membranes using a model and rigorously analyzed the results obtained. Thin-film composite (TFC) membranes, with four having polyvinylidene fluoride (PVDF) nanofibers support layers, were found to be the top performers in terms of water flux. Advantages and limitations of different fabrication methods, membranes structures, and materials were discussed.
DESALINATION AND WATER TREATMENT
(2021)
Article
Energy & Fuels
Laura L. Trinkies, Marlene Crone, Michael Tuerk, Manfred Kraut, Roland Dittmeyer
Summary: In this study, mono- and bimetallic Pd and Pt catalysts were deposited via supercritical fluid reactive deposition (SFRD) on TiO2 coated additively manufactured substrates. The focus of this work was to evaluate the suitability of these catalysts for the direct synthesis of H2O2 in the liquid phase. The results showed that all catalysts exhibited high activity and productivity, with PdPt bimetallic catalysts showing the highest productivity and an increase in Pd loading leading to a decrease in productivity. Comparison with literature data demonstrated the high suitability of the SFRD method for the proposed application, with the added benefits of simplicity and environmental friendliness in catalyst production.
CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION
(2024)
Article
Energy & Fuels
Xiongbao Hu, Zuguo Shen, Yu Wang
Summary: It is impossible to control the outer wall temperature of the micro-combustor below the maximum allowable temperature of commercial thermoelectric generators simply through increasing the equivalent heat transfer coefficient. Three simple strategies were developed to improve temperature uniformity, yet none of them could ensure full temperature control.
CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION
(2024)
