Article
Engineering, Chemical
Yangcheng Dou, Guiqin Yi, Liyun Huang, Yichang Ma, Chong Li, Aimei Zhu, Qinglin Liu, Qiugen Zhang
Summary: In this study, TFC-HFMs with excellent performance were fabricated and exhibited high permeate flux, excellent separation performance, and good stability for ethanol dehydration, suggesting their potential application in the field.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Engineering, Chemical
Geng-Sheng Lin, Yi-Rui Chen, Ta-Hsuan Chang, Tse-Chiang Huang, Guo-Liang Zhuang, Wei-Zhi Huang, Yu-Cheng Liu, Hideto Matsuyama, Kevin C-W Wu, Kuo-Lun Tung
Summary: This study successfully coated a ZIF-8/PVA mixed matrix membrane onto alpha-alumina hollow fibers for ethanol dehydration using pervaporation technique. The high loading of ZIF-8 in the MMM resulted in improved performance in terms of permeate flux and separation factor. Additionally, the use of hollow fiber support with thinner coating thickness showed promising potential for scale-up production.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Nanoscience & Nanotechnology
Tengyang Zhu, Xiaoxu Zhao, Ming Yi, Sheng Xu, Yan Wang
Summary: A ternary cross-linked PVA-APTES-ZIF-90 membrane was developed to enhance ethanol dehydration performance by eliminating interfacial defects between PVA and ZIF-90. The incorporation of cross-linker APTES and ZIF-90 particles resulted in stronger anti-swelling and mechanical properties, as well as improved separation performance in PVA-APTES-ZIF-90 trinity membranes. Ternary cross-linking among cross-linker, inorganic filler, and polymeric chain is believed to be a feasible strategy for preparing polymeric-based hybrid membranes with high separation performance.
ADVANCED COMPOSITES AND HYBRID MATERIALS
(2022)
Article
Biochemistry & Molecular Biology
Katsiaryna S. Burts, Tatiana Plisko, Vladimir G. Prozorovich, Galina B. Melnikova, Andrei I. Ivanets, Alexandr Bildyukevich
Summary: The modification of the polyvinyl alcohol (PVA) selective layer of thin film composite (TFC) membranes using aluminosilicate (Al2O3•SiO2) nanoparticles improved the structure and pervaporation performance. PVA-Al2O3•SiO2/polyacrylonitrile (PAN) thin film nanocomposite (TFN) membranes were developed for the separation of ethanol/water mixtures, resulting in increased hydrophilicity and improved stability compared to the reference membrane.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Engineering, Chemical
Mingqian Wang, Xue Cheng, Guanjin Jiang, Jiangyu Xie, Weibin Cai, Jiding Li, Yujun Wang
Summary: By coating silica on PVA membranes, a rough and super-hydrophilic surface was created, which improved the pervaporation dehydration performance. The PVA/polydopamine/SiO2 composite membranes exhibited strong hydrophilicity and high surface roughness.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Electrochemistry
Devendra Y. Nikumbe, Sooraj Sreenath, Selvaraj Paramasivam, Chetan M. Pawar, Priyanka P. Bavdane, Shanmugam Senthil Kumar, Rajaram K. Nagarale
Summary: The use of redox flow batteries is important for preserving renewable energy, and the selection of redox-active species and ion exchange membranes is crucial for their commercialization. In this study, a robust PVA-SiO2 composite membrane was synthesized and shown to be essential for an aqueous hybrid RFB. The membrane, created by combining PVA with silica particles, exhibited good dimensional and chemical durability, allowing for high ionic conductivity. Its utility was demonstrated in a hybrid RFB with newly synthesized PPS and vanadium (III) salt, showing high efficiency and performance.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Decai Yang, Wei Kang, Xueyang Fang, Fei Gao, Chi Cheng, Zongbin Zhao, Shi Chen, Yongming Bao, Chuang Xue
Summary: In this study, a vertically aligned carbon nanotube (CNT) arrays/polydimethylsiloxane (PDMS) membrane with large and expandable area was successfully prepared by a modular splicing method. The addition of CNT arrays with openings at both ends significantly improved the pervaporation performance of the PDMS membrane for ethanol recovery. Furthermore, the expandable area enabled the CNT arrays/PDMS membrane to couple with fed-batch fermentation, increasing the ethanol yield and productivity.
Article
Engineering, Chemical
Pawel Grzybek, Artur Chrobak, Emile Haye, Jean-Francois Colomer, Slawomir Kolodziej, Przemyslaw Borys, Roman Turczyn, Gabriela Dudek
Summary: Magnetic particles are appealing fillers in composite membranes for various purposes. This study improves the ethanol dehydration process by using alginate membranes filled with hard magnets. The magnetic properties and size of the particles significantly impact the efficiency and separation properties of the process.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Jie Han, Yao Liang, Chengxiu He, Yujia Tong, Weixing Li
Summary: A catalytic composite membrane was developed for enhanced esterification using lyophilization, showing superior catalytic performance and stability in the reaction process.
Article
Engineering, Chemical
Pawel Grzybek, Lukasz Jakubski, Przemyslaw Borys, Slawomir Kolodziej, Czeslaw Slusarczyk, Roman Turczyn, Gabriela Dudek
Summary: Asymmetric chitosan membranes were used to improve the process of ethanol dehydration, and a strong correlation was found between membrane structure, pore size and separation effectiveness. An interesting phenomenon of membrane structure changing during the pervaporation process was observed, leading to a nonlinear time dependence of transport and separation parameters. The best performance for PV separation was achieved by a membrane prepared from a casting solution containing 0.1 ml of absolute ethanol.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Chemistry, Analytical
Xia Zhan, Rui Ge, Zhongyong Gao, Teng Gao, Luying Wang, Jiding Li
Summary: This study investigates the relationship between the microstructure and performance of mixed matrix membranes (MMMs) filled with graphene (GR) and graphene oxide (GO). The presence of oxygen-containing groups on GO enhances the membrane's hydrophilicity and permeation properties, while the presence of GR reduces the hydrophilicity and permeation properties. The study highlights the importance of the microstructure and physical properties of graphene in achieving high-performance MMMs.
Article
Engineering, Chemical
Huayan Fu, Ruiwen Luo, Panpan Liu, Shuning Yu, Qinglei Xing, Peng Bai, Xianghai Guo, Jiafei Lyu
Summary: To improve the selectivity and permeability of alcohol dehydration, hydrophilic zirconium-based NU-906 nanoparticles were incorporated into chitosan to fabricate NU-906/CS mixed matrix membranes. The hybrid membranes showed excellent water affinity and structural stability, leading to enhanced water selectivity and permeability. The optimized membrane with 5.0 wt% NU-906 achieved a high flux of 1086 g/(m(2).h) and an excellent separation factor of 2651 for 90 wt% ethanol dehydration at 76 degrees C. This research expands the range of MOFs available for the fabrication of mixed matrix membranes and provides new options for organic solvent pervaporation dehydration.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Engineering, Chemical
Feng-Yi Cheng, Xin Zhang, Yu-Fei Lin, Liu-Kun Wu, Zhen-Liang Xu, Dovletjan Taymazov
Summary: In this study, a thin-film composite (TFC) PV membrane was successfully prepared by using sodium alginate (SA) as a scaffold on a ceramic hollow fiber support, demonstrating good dehydration performance for separating an 85 wt% ethanol-water mixture. This novel approach of incorporating SA as a scaffold in the membrane matrix provides a promising means to tailor the functional selective layer for enhancing membrane separation performance.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2022)
Article
Engineering, Chemical
Zheng Zeng, Haikuan Yuan, Jie Lu
Summary: In this study, poly (vinyl alcohol)-g-graphene oxide (PVA-g-GO) nanocomposites were synthesized through grafting reaction of poly (vinyl alcohol) (PVA) and graphene oxide (GO). The PVA-g-GO nanocomposites showed better dispersibility and hydrophilicity than GO. The composite membranes prepared using PVA-g-GO as a modifier exhibited improved separation performance and anti-swelling property.
CANADIAN JOURNAL OF CHEMICAL ENGINEERING
(2023)
Article
Engineering, Chemical
Rumwald Leo G. Lecaros, Szu-Ying Ho, Hui-An Tsai, Wei-Song Hung, Chien-Chieh Hu, Shu-Hsien Huang, Kueir-Rarn Lee, Juin-Yih Lai
Summary: The modification with PAMAM can improve the performance of SA/PVDF composite membranes, enhance the interaction with SA, reduce membrane swelling, and increase separation efficiency.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Polymer Science
Andrew Selkirk, Nadezda Prochukhan, Ross Lundy, Cian Cummins, Riley Gatensby, Rachel Kilbride, Andrew Parnell, Jhonattan Baez Vasquez, Michael Morris, Parvaneh Mokarian-Tabari
Summary: This study overcomes the kinetic challenges in the self-assembly of UHMW BCPs through precision solvent annealing, resulting in highly ordered large-period lamellar domains. The research reveals that film thickness and solvent concentration significantly affect the domain morphology.
Article
Chemistry, Multidisciplinary
Nadezda Prochukhan, Andrew Selkirk, Ross Lundy, Elsa C. Giraud, Tandra Ghoshal, Clive Downing, Michael A. Morris
Summary: A room-temperature strategy for fabricating vertical silicon nanotube arrays derived from a toroidal micelle pattern via water vapor-induced block copolymer self-assembly mechanism is presented. The simplicity of the technique and the versatility of resulting metal structures show the potential applicability of such room-temperature synthesis routes.
Article
Materials Science, Multidisciplinary
Sajjad Husain Mir, Brian D. Jennings, Goekalp Engin Akinoglu, Andrew Selkirk, Riley Gatensby, Parvaneh Mokarian-Tabari
Summary: A platform is introduced for creating a reusable and highly efficient low band gap photocatalyst by confining gold nanoparticles in nanopatterned Si monolith. This design prevents agglomeration of nanoparticles and enhances redox reaction efficiency while minimizing rapid recombination of photogenerated charge carriers. Compared to bare silicon and randomly dispersed AuNPs on silicon, the confined structure achieved near complete degradation of MO due to more active sites and effective Schottky junctions.
ADVANCED OPTICAL MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Tandra Ghoshal, Ramsankar Senthamaraikannan, Matthew T. Shaw, Ross Lundy, Andrew Selkirk, Michael A. Morris
Summary: The study demonstrated the fabrication of sub-20 nm gate-all-around silicon nanowire field effect transistor structures using self-assembly techniques with a block-copolymer-assisted hard mask approach. This involved creating nanopatterned Si feature arrays on a topographically patterned substrate, achieving dot and line nano-patterns through a thermo-solvent approach utilizing polystyrene-b-poly-(ethylene oxide) block copolymers.
Article
Chemistry, Multidisciplinary
David J. Sullivan, Tom F. O'Mahony, Malco C. Cruz-Romero, Enda Cummins, Joseph P. Kerry, Michael A. Morris
Summary: This study aimed to design, develop, and evaluate a method to facilitate the smart delivery of antimicrobial essential oils by absorption into high surface area support material. The functionalized carrier materials showed good antimicrobial activity, indicating potential applications in the future.
Article
Chemistry, Multidisciplinary
Tandra Ghoshal, Nadezda Prochukhan, Michael A. Morris
Summary: This study utilized a low-cost block copolymer (BCP) approach to create a range of well-ordered inorganic and dielectric nanoparticles and nanowire array patterns on substrates. Through optimization of solvent annealing parameters and calibration of precursor solution concentrations, high-quality nanoparticles and nanowires were achieved.
Article
Biochemistry & Molecular Biology
Nadezda Prochukhan, Stephen A. O'Brien, Arantxa Davo-Quinonero, Anna Trubetskaya, Eoin Cotter, Andrew Selkirk, Ramsankar Senthamaraikannan, Manuel Ruether, David McCloskey, Michael A. Morris
Summary: A method for manufacturing standalone lignin membranes without additives is reported, using different organosolv lignin materials in a humid environment. The membranes can be used as templates for producing nickel oxide membranes and further etching to form black silicon. This method can be applied to various processes and adapted for large-scale manufacturing.
Article
Nanoscience & Nanotechnology
Aislan Esmeraldo Paiva, Jhonattan Frank Baez Vasquez, Andrew Selkirk, Nadezda Prochukhan, Fernanda G. L. Medeiros Borsagli, Michael Morris
Summary: A facile and versatile strategy was developed to produce highly ordered porous metal oxide structures using block copolymer lithography. The effects of various parameters on the ordering of the structures were analyzed, and the strategy can be applied to create different inorganic nanostructures for various applications.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Nanoscience & Nanotechnology
Rajasree Das, Liang Ye, Sumit Sukhbasi Lal, Hasan Ahmadian Baghbaderani, Ranajit Sai, Michael Hayes, Michael A. A. Morris, Paul McCloskey
Summary: FeSiB based soft magnetic flakes coated with optimally thick SiO2 were produced by mechanical ball milling and optimized sol-gel coating. The milling process reduced ribbon thickness to minimize eddy current loss, and a tiny fraction of the flakes were allowed to become nanocrystalline, enhancing saturation flux density and permeability without incurring additional losses. A stress-releasing post-annealing process further improved the magnetic properties without affecting the insulating SiO2 layer.
Article
Engineering, Environmental
Aislan Esmeraldo Paiva, Jhimli Paul Guin, Jhonattan Frank Baez Vasquez, K. Ravindranathan Thampi, James A. Sullivan, Fernanda G. L. Medeiros Borsagli, Michael A. Morris
Summary: Porous iron oxide structures were produced on glass substrates using block copolymer templating. XRD and XPS studies revealed the coexistence of FeIII/FeII. Vertically aligned PS cylinders with pore sizes of 35, 45 and 400 nm were obtained by varying the annealing time. The iron oxide-covered glass substrates showed efficient degradation of levofloxacin solution through a photo-Fenton process.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Nanoscience & Nanotechnology
Liang Ye, Rajasree Das, Guannan Wei, Sumit Sukhbasi Lal, Michael Morris, Hasan Ahmadian Baghbaderani, Ranajit Sai, Paul McCloskey
Summary: Melt-spun Fe-based ribbons are commonly used in transformers and inductors due to their high flux density and low coercivity. However, their high thickness results in significant eddy current losses at MHz frequencies. This study demonstrates an optimized ball milling process to produce high-yield flakes in the desired size range (2-4 μm) to suppress the eddy current losses. The findings provide an efficient approach to fabricate ultra-thin flakes for high-frequency applications.
Article
Materials Science, Multidisciplinary
Sajan Singh, Tandra Ghoshal, Nadezda Prochukhan, Alberto Alvarez Fernandez, Jhonattan Frank Baez Vasquez, Pravind Yadav, Sibu C. Padmanabhan, Michael A. Morris
Summary: In this study, we demonstrated the formation of oxide porous and nanodot structures from the same block copolymer (BCP) through the phase inversion of a BCP template. The effect of solvent annealing time on the ordering of the BCP was investigated. Metal ions were infiltrated into the BCP templates and oxidized to their oxides. The resulting structures were analyzed through various methods, confirming the complete elimination of the BCP template and the presence of metal oxides.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Caitlin McFeely, Matthew Snelgrove, Kyle Shiel, Gregory Hughes, Pravind Yadav, Ross Lundy, Michael A. Morris, Enda McGlynn, Robert O'Connor
Summary: Research on the fabrication of polymer brushes for Area Selective Deposition is crucial for understanding 'bottom up' lithographic techniques. In this study, we demonstrate that thin polystyrene brushes can effectively block atomic layer deposition processes, providing a potential route to area deactivation. We also found that the thickness of the polystyrene brushes has a significant impact on the blocking efficacy.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
Article
Materials Science, Multidisciplinary
M. Snelgrove, C. McFeely, K. Shiel, G. Hughes, P. Yadav, C. Weiland, J. C. Woicik, P. G. Mani-Gonzalez, R. Lundy, M. A. Morris, E. McGlynn, R. O'Connor
Summary: Developing vapor phase infiltration (VPI) processes for area selective polymer nanopatterning requires substantial advancement in understanding precursor infiltration, precursor-polymer interaction and process parameters. In this study, the interaction between TMA and P2VP/P4VP was analyzed in detail, and the use of P4VP was found to have notable advantages for VPI area selective purposes. By investigating the effects of fundamental process parameters, optimal area selectivity was ensured.
MATERIALS ADVANCES
(2021)
Article
Engineering, Chemical
Yunfei Yu, Xue Yang, Chenchen Zhang, Jie Chen, Wei Lin, Jianqiang Meng
Summary: This study reports an environmentally friendly and simple approach for preparing double-network (DN) ion gel membranes with high strength and excellent gas separation performance. By optimizing crosslinking density, mass ratio, and the type and content of free ionic liquid, the mechanical and gas separation properties of the DN membrane are improved.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Si-qi Jiang, Qiang Gao, Xi-guang Li, Chao-zhu Deng, Jun Qiu, Xiang-nan Zhu
Summary: A dual-strengthening pretreatment method is proposed to remove PVDF more efficiently and enhance the leaching of LiCoO2. Experimental results show that dual-strengthening pretreatment can effectively remove PVDF and significantly improve the leaching efficiency compared to single pretreatment methods.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Zengchi Hu, Xiaoyu Wang, Xiaohui Zhang, Xue Li, Jiangbin Xia
Summary: The rapid fabrication of high-performance composite membranes based on CMPs using simple and low-cost methods is challenging. In this study, three CMPs-based composite membranes were rapidly fabricated with adjustable size using unidirectional diffusion synthesis. The microstructural design enhanced the rejection rates of the membranes and they showed strong hydrolytic resistance, thermal stability, and acid-base resistance. Electrostatic adsorption and the adjustable microstructures significantly varied the repellence of the membranes to different charged molecules.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Farzaneh Rouhani, Matineh Ayedi, Nasser Safari
Summary: Introducing defects into porous metal-organic frameworks is important for improving their adsorption performance. Quasi-MOFs, an underutilized variant of large-scale, fundamentally deficient MOFs, have been found to have substantial amounts of unsaturated metal sites to offset the drawbacks of MOFs. In this study, a quasi-MOF was produced using a water-stable MOF and demonstrated significantly improved phosphate adsorption capability due to the presence of defect sites.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Valentin Reungoat, Morad Chadni, Louis M. M. Mouterde, Fanny Brunissen, Florent Allais, Helene Ducatel, Irina Ioannou
Summary: This study focuses on the recovery of sinapic acid using liquid-liquid extraction assisted by a hollow fiber membrane contactor from an aqueous feed obtained through the hydrolysis of mustard bran. The screening of solvents of different chemical nature showed that all tested solvents had an extraction efficiency of more than 80% for pH < 5. Four solvents were selected for use in the hollow fiber membrane contactor, and the volatile solvents showed higher mass transfer coefficients compared to non-volatile solvents. The extraction efficiency was intensified by increasing the initial concentration of sinapic acid and the feed-to-solvent ratio. CPME was found to have optimal recovery efficiency at a phase ratio of 8:1, yielding 0.9 g of sinapic acid per liter of CPME used.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Takahiro Sakamoto, Takafumi Hanada, Hayate Sato, Mayu Kamisono, Masahiro Goto
Summary: The emergence of the battery society has led to a high demand for battery metals, resulting in a strain on their supply. This study introduces a novel technique using a hydrophobic deep eutectic solvent (DES) for leaching and recovering battery metals from low-grade nickel laterite ores. The DES enables selective leaching and recovery of the metals, offering a promising pathway for the extraction of critical battery metals.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Rongrong He, Jiarui Chen, Chunyao Zhang, Dan Lu, Lin Zhang, Tao He
Summary: Researcher has developed a method to quantify the charge density in nanofiltration (NF) membrane separation layer and applied it in NF membranes that can separate Mg2+ and Li+. The results showed that overcompensated amine groups played a major role, and there was a linear relationship between charge density and coating bi-layers or PAH layers.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Zhijian Zhang, Min Chen, Zhe Lin, Zhichao Yang, Yafeng Du, Zhihui Chen, Zhenhao Yang, Kongyin Zhao, Ligang Lin
Summary: Membrane technology plays an important role in molecular/ion separation processes, but faces challenges such as membrane fouling. This study introduces a new ion-crosslinking method to fabricate copper alginate hydrogel membranes with improved mechanical strength and antimicrobial capabilities. The membranes exhibit excellent separation performance and enhanced long-term molecule/ion separation through improved anti-swelling properties. Molecular dynamics simulations and life cycle analysis highlight the pore structure and environmental friendliness of the hydrogel membranes. These findings provide valuable insights for developing sustainable hydrogel membranes with stable performance and high separation efficiency.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Dongmei Liu, Aiying Guo, Yanling Qi, Zhixin Ji, Hongjuan Li, Zhiwei Zhang, Xinyue Zhang, Kunze Wu, Aijun Cai
Summary: In this study, a stable magnetic Mg/Mn-layered double oxide-doped biochar composite (MgMnLDO-MBC) was prepared and successfully used for the removal of antibiotics and bacteria from wastewater. The composite exhibited enhanced surface areas, adsorption sites, and free radicals, leading to improved catalytic activity. The effects of different factors on the removal efficiency were evaluated, and the composite showed good reusability.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Feng Wang, Zhaoyong Bian, Yaru Zhang, Wenchao Yu, Qiang Zhang, Hui Wang
Summary: In this study, a nanofibrous layered structure of Ff-Ti3C2Tx-Co3O4 was prepared by self-assembling nanofibrous Co3O4 with lamellar fluorine-free MXene (Ff-Ti3C2Tx). The Ff-Ti3C2Tx-Co3O4 exhibited excellent catalytic activity for degradation, resistant to ionic interference, and maintained high removal efficiency of sulfamethoxazole (SMX) in municipal wastewater. The rapid SMX degradation involved fast electron transfer in redox cycles with PMS and the generation of 1O2 via PMS ->center dot O2 -> 1O2. This work provides new insights into antibiotic degradation mechanisms and electron transfer based on PMS activation.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Weipeng He, Jiacheng Luo, Yujie Wu, Tianhao Luo, Chen Tang
Summary: This study comparatively evaluated the role of cationic, anionic, and nonionic polyacrylamides (PAMs) in ballasted flocculation of clay suspensions under different aluminum sulfate (AS) coagulant dosages. The selection of PAMs and AS dosage had a significant influence on the size and shear resistance of ballasted floc aggregates.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Lixian Wang, Lizhi Zhao, Didi Si, Zhixin Li, Huiqin An, Hui Ye, Qingping Xin, Hong Li, Yuzhong Zhang
Summary: Metalloporphyrin-based nanozymes integrated with poly (vinylidene fluoride) membrane show high catalytic activity and reusability for the decolorization of Congo Red dye in continuous flow process.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Yongfei Ma, Chenyu Zeng, Yongzhen Ding, Jiayi Tang, Ondrej Masek, Zhikang Deng, Rui Mu, Zulin Zhang
Summary: In this study, sludge-derived biochar (SBC) was functionalized with various iron salts to enhance its adsorption ability for sulfamethoxazole (SMX) and magnetic collection performance. Ball milling was further employed to treat the optimal iron salt functionalized SBC (MSBC), resulting in ball milled SBC (BMSBC) with improved adsorption performance for SMX. The dominant driving mechanism for SMX adsorption onto BMSBC was confirmed to be multiple physicochemical forces, including 7C-7C conjugation, pore filling, H-bonding, Fe-O complexation, and electrostatic interactions. BMSBC exhibited favorable adsorption ability for SMX in actual waters and could be easily collected within 1 min due to its magnetic sensitivity.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Jinglin Tan, Xiaohui Mao, Wenjihao Hu, Hongbo Zeng
Summary: This study investigates the influence of PDMS chain architectures on surface properties and reveals that PDMS coatings with looped structures exhibit superior hydrophobicity, self-cleaning, and water sliding compared to coatings with linear structures. Additionally, both looped and linear PDMS coated stainless steel mesh/polyester fibers show efficient separation of oil/water mixture.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Wei-Liang Chen, Chih-Chia Cheng, Chien-Hsing Lu, Jem-Kun Chen
Summary: This study designs a novel sandwich-structured capacitor that reduces the absorption time of pollutants using dielectrophoresis force. By coating graphene oxide on polystyrene microspheres as adsorbents and encapsulating them within the capacitor, the adsorption rate is significantly enhanced. Additionally, frequency manipulation allows for the recycling of adsorbents and concentration of dyes, minimizing secondary pollution.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
