Article
Engineering, Environmental
Shaheen F. Anis, Boor S. Lalia, Alain Lesimple, Raed Hashaikeh, Nidal Hilal
Summary: A nano zeolite-Y ultrafiltration membrane was fabricated using isostatic pressing technique, showing superior separation capabilities. By comparing membranes with different zeolite particle sizes, this study elucidated their morphology and wetting properties, which directly impact oil-in-water separation, achieving high rejection rates for oil content as low as 1.57 +/- 0.2 mg/L.
JOURNAL OF WATER PROCESS ENGINEERING
(2021)
Article
Engineering, Chemical
Catia Algieri, Enrico Drioli
Summary: Membrane-based technology is attracting attention due to its low energy consumption, mild operating conditions, and high efficiency. Polymeric membranes are widely used for their low cost and reproducible preparation, but face issues like fouling and trade-off between permeability and selectivity. Inorganic membranes like zeolite membranes, with their hydrophilic nature, high stability, permeability, and selectivity, offer solutions to these problems. Their molecular-level pore size and adsorption property make them suitable for a variety of separation processes, although challenges like reproducibility, defects, and high manufacturing costs still hinder their industrial-scale application.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Chemical
Minseong Lee, Gihoon Lee, Yanghwan Jeong, Woong-Jin Oh, Jeong-gu Yeo, Jung Hyun Lee, Jungkyu Choi
Summary: By studying the correlation between membrane and feed stream properties, the researchers proposed critical parameters to describe the representative module properties of the recovery, purity, and process efficiency of CO2. They also found that the process efficiency of the membrane unit was improved in a double-stage configuration, with noticeable improvements in CO2 purity and process efficiency, at a slight expense of CO2 recovery.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Fangge Chen, Yanhong Li, Aisheng Huang
Summary: A facile strategy for preparing compact zeolite LTA membranes on PEI-modified substrates without seeding was proposed. By functionalizing the substrates with PEI, well-intergrown and phase-pure LTA membranes can be formed, which showed high pervaporation performances for alcohol/water mixtures separation. The universality and efficiency of this strategy were demonstrated by the successful formation of well-intergrown FAU zeolite membranes on the modified substrates.
CHINESE CHEMICAL LETTERS
(2021)
Article
Engineering, Chemical
Peng Du, Jieyu Song, Xuerui Wang, Yuting Zhang, Jixian Xie, Gang Liu, Yongli Liu, Zhenwei Wang, Zhou Hong, Xuehong Gu
Summary: Efficient hydrogen separation is crucial from the cracked tail gas of ethylene plant. DD3R zeolite membranes were developed for this purpose, showing high selectivity and stability under harsh conditions. The efficient scale-up synthesis method led to the production of high-quality membranes suitable for industrial applications.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Chemistry, Physical
Jinkang Pan, Yuanyuan Ge
Summary: The development of functional membranes with easy operation, low cost, high stability, and large flux is urgently required for effective treatment of increasing oily wastewater. In this work, NaA zeolite/copper mesh composite membranes (NaA@CM) for oil/water separation were prepared using low-cost, readily available, and green metakaolin as the main raw material. The hydrothermal temperature was found to greatly affect the structure and properties of NaA@CM. The composite membrane prepared at 110 degrees C (NaA@CM-110) exhibited optimum underwater superoleophobicity, large water flux, and high separation efficiency for the cyclohexane/water mixture.
SURFACES AND INTERFACES
(2023)
Article
Engineering, Chemical
Liang Yu, Iliana Kyriazidou, Ming Zhou, Jonas Hedlund
Summary: This study investigates the application of DDR membranes with a thickness of approximately 700 nm in the separation of CO2 and CH4. The experimental results show that these membranes exhibit the highest CO2 permselectivity and CO2 permeability reported in literature. This is attributed to the defect-free and ultra-thin zeolite film in the membrane as well as the open and highly permeable support. The study also designs membrane processes for upgrading biogas to biomethane, which are characterized by low membrane area, methane slip, and power need.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Engineering, Chemical
Shaheen Fatima Anis, Boor Singh Lalia, Raed Hashaikeh, Nidal Hilal
Summary: A novel conductive ceramic membrane was fabricated using nano-zeolite and carbon nanostructures (CNS) for efficient oil/water separation. The composite membrane structure, with adjustable ratios of zeolite and CNS, greatly facilitated rapid water permeation and high rejection of crude oil. The conductive nature of the membrane allowed for periodic electrolysis, leading to considerable flux recovery after filtration cycles.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Review
Chemistry, Applied
Yichuan Li, Guofu Zhu, Yu Wang, Yongming Chai, Chenguang Liu
Summary: Oriented MFI zeolite membranes, compared with other orientations, can effectively improve the molecular transmission rate and are widely used in mixture separation and catalysis. However, twinning easily occurs during membrane preparation and controlling membrane orientation is challenging.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Jilong Wang, Yaqi Fan, Jingang Jiang, Zheng Wan, Shuyue Pang, Yejun Guan, Hao Xu, Xiao He, Yanhang Ma, Aisheng Huang, Peng Wu
Summary: Membrane separation is an energy-efficient and environmentally friendly process that can achieve highly permeable and selective mixture separation. Two-dimensional molecular sieving membranes with unique nanopores and low transport resistance are desirable, but limited by the availability of recognized zeolite nanosheets. A newly reported swollen layered zeolite, ECNU-28, with high hydrogen selectivity offers promise for hydrogen purification and greenhouse gas capture.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Engineering, Chemical
Jin-hyeok Park, Donghun Kim
Summary: Zeolite nanosheets are effective in fabricating high-performance separation membranes, but their direct synthesis is complicated, especially for achieving the desired two-dimensional morphology. However, a simple synthesis method was found for MFI structure-type nanosheets using a single hydrothermal treatment, which had favorable thickness and aspect ratio for membrane fabrication compared to other zeolite MFI materials. The zeolite MFI membranes made from these nanosheets exhibited high flux and separation factor at high temperatures, outperforming membranes made from conventional zeolite MFI materials.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Chemistry, Applied
Xiuxiu Ren, Huan Yu, Meng Guo, Rong Xu, Jing Zhong
Summary: In this study, a long alkyl chain-containing organosilica layer was utilized to modify silicalite-1 membranes, resulting in bi-layered BTESO/silicalite-1 composite membranes. After BTESO modification, the surface of the membranes became smoother, denser, and more hydrophobic. The modified membranes exhibited good separation performance in pervaporation, with increased ethanol flux and reduced water flux without sacrificing ethanol flux.
MICROPOROUS AND MESOPOROUS MATERIALS
(2022)
Article
Engineering, Environmental
Tao Zhou, Mengyang Shi, Lingjie Chen, Chao Gong, Ping Zhang, Jixian Xie, Xuerui Wang, Xuehong Gu
Summary: In this study, all-silica STT zeolite membranes were prepared for capturing hydrogen from coke oven gas as a clean energy resource. The membranes exhibited high selectivity and stability, presenting a new possibility for hydrogen separation.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Materials Science, Ceramics
Behrouz Jafari, Edris Rezaei, Mohsen Abbasi, Seyed Abdollatif Hashemifard, Arash Khosravi, Mika Sillanpaa
Summary: The main objective of this work is to synthesize a novel nano-tubular ceramic membrane for treatment of oily wastewater by manipulating hydrophilic materials. Through adjusting the composition and sintering temperature, optimal conditions for the support membrane were determined. The natural zeolite and nano-SiO2 coatings improved the membrane performance.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2022)
Article
Engineering, Chemical
Hammad Saulat, Jianhua Yang, Tao Yan, Waseem Raza, Wensen Song, Gaohong He
Summary: A tungsten-incorporated mobil-type 11 (MEL) zeolite membrane (W-MEL membrane) was investigated for the separation of oil/water mixtures. The membrane was grown on stainless steel meshes using an in-situ hydrothermal growth method facilitated with APTES modification. The W-MEL membrane exhibited hydrophilic nature and achieved high separation efficiency for oil/water mixtures, demonstrating its potential for oil/water separation.
CHINESE JOURNAL OF CHEMICAL ENGINEERING
(2023)
Article
Chemistry, Analytical
Ali Mandel Almusawy, Riyad H. Al-Anbari, Qusay F. Alsalhy, Arshed E. Al-Najar, Enrico Drioli
Summary: This study presents a novel membrane bioreactor that combines an electro bioreactor and moving biomedia to enhance biological treatment and reduce membrane fouling. The addition of zinc oxide nanoparticles (ZnO-NPs) decreases pore size and roughness while increasing permeate flux. The integration of biological, membrane, and electrochemical processes reduces membrane fouling. The system demonstrates significant improvement in retention capacity and maintains a stable flux during long-term operation.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Physical
Pasquale Francesco Zito, Adele Brunetti, Alessio Caravella, Giuseppe Barbieri
Summary: This study investigated the permeation of binary and ternary H2-containing mixtures through a SAPO-34 membrane and examined the influence of hydrogen and the other gases (CO2 and CH4) on permeability and selectivity. The research employed a validated mass transport model based on surface and gas translation diffusion to analyze the behavior of gas mixtures at different temperatures, feed pressures, and compositions. The results showed that CO2 and CH4 in the H2-containing mixtures reduced the permeability of H2 by about 80% due to their stronger adsorption, while H2 promoted the permeation of CO2 and CH4. The study demonstrated the potential of SAPO-34 membranes in treating H2-containing mixtures.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Review
Chemistry, Applied
Alessandra Criscuoli, Omar Bamaga, Qian Wang, Zhaoliang Cui, Akram Nahri, Mohammed Albeirutty, Wanqin Jin, Enrico Drioli
Summary: Membrane bioreactors (MBRs) are currently the best available technology for municipal and wastewater treatment, but further improvements are needed. Coupling MBRs with high-retention membrane processes may be a solution. This paper presents the main features and commercial development of MBRs, discusses their performance when coupled with reverse osmosis (RO) and membrane distillation (MD) units, and emphasizes the limitations and further research needed for large-scale implementation.
SEPARATION AND PURIFICATION REVIEWS
(2023)
Article
Biophysics
Antonella Piscioneri, Sabrina Morelli, Tiziana Ritacco, Michele Giocondo, Rafael Penaloza, Enrico Drioli, Loredana De Bartolo
Summary: Biomaterial surface modification through the introduction of defined patterns of topography helps study cell behavior in response to geometrical cues. The lithographic molding technique is widely used for conferring biomaterial surface cues and enhancing the performance of biomedical devices. Different topographical features, such as channels, pillars, and pits, were investigated for their effects on different cell types, revealing distinct cell responses and interactions.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2023)
Article
Biochemistry & Molecular Biology
Mamdouh S. Alharthi, Omar Bamaga, Hani Abulkhair, Husam Organji, Amer Shaiban, Francesca Macedonio, Alessandra Criscuoli, Enrico Drioli, Zhaohui Wang, Zhaoliang Cui, Wanqin Jin, Mohammed Albeirutty
Summary: In this study, the integrated MBBR/MBR/DCMD process showed better removal efficiency of TDS and higher effluent permeate flux compared to the two-step MBR/DCMD process. The proposed membrane processes also outperformed the Jeddah Industrial Wastewater Treatment Plant in terms of effluent quality.
Article
Engineering, Chemical
Chen Wang, Myoung Jun Park, Ralph Rolly Gonzales, Hideto Matsuyama, Enrico Drioli, Ho Kyong Shon
Summary: The study presented the preparation of cross-linked multilayer PEI/GO nanofiltration membrane using inkjet printing assisted layer-by-layer assembly. The (PEI/GO)3 membrane showed the optimal separation performances with high permeability and selectivity. The membrane exhibited excellent rejection rates for different dyes and selectivity for different salts. Furthermore, (PEI/GO)3 membrane demonstrated desirable stability and long-term filtration stability.
Article
Biochemistry & Molecular Biology
Francisco Ramon Fortea-Perez, Julia Vallejo, Teresa F. Mastropietro, Giovanni De Munno, Renato Rabelo, Joan Cano, Miguel Julve
Summary: Two mononuclear nickel(II) complexes with tridentate terpyridine ligands have been synthesized and their structures have been determined. The magnetic measurements reveal the presence of magnetically isolated spin triplets in these complexes at high temperatures, and the occurrence of field-induced single-molecule magnet behavior at lower temperatures. These studies provide important insights into the magnetic properties of nickel(II) complexes.
Review
Materials Science, Multidisciplinary
Teresa F. Mastropietro
Summary: Mismanagement of plastic waste has led to its widespread presence in the environment, causing concerns for both the environment and human health due to the fate and ecotoxicological effects of plastic debris. Current technologies for removing plastic particles are not highly efficient, especially for nanoparticles. However, metal-organic frameworks (MOFs), with their unique properties, show promise as adsorbents for the removal of plastic particles from water, particularly when integrated in porous composite materials or membranes. Additionally, the alternative preparation of MOFs using plastic waste as a sustainable source of organic linkers is a potential solution to reduce costs and promote a circular economy.
SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS
(2023)
Article
Biochemistry & Molecular Biology
Fangli Zhang, Wei Hou, Zhonglin Yang, Zhaohui Wang, Rizhi Chen, Enrico Drioli, Xiaozu Wang, Zhaoliang Cui
Summary: This paper proposed a membrane distillation and crystallization (MDCr) process to achieve zero liquid discharge of aniline wastewater. The effects of feed solution temperature and flow rate on the membrane distillation (MD) process were investigated. The results showed that under certain feeding conditions, the MD process had a high flux and salt rejection. The possibility of realizing zero liquid discharge of aniline wastewater in the MDCr process was verified.
Review
Biochemistry & Molecular Biology
Francesca Alessandro, Francesca Macedonio, Enrico Drioli
Summary: Water scarcity is a major concern for human sustainability and ecosystem preservation. Seawater desalination, particularly membrane distillation, has emerged as a sustainable solution. However, temperature polarization in membrane distillation leads to a significant reduction in water flux. Plasmonic nanostructures in membranes and the efficient conversion of light into heat offer potential prospects for enhancing solar-driven membrane distillation.
Article
Energy & Fuels
Alessandra Criscuoli, Francesca Macedonio, Adele Brunetti, Elena Tocci, Enrico Drioli
Summary: This contribution summarizes the role of membrane engineering and its applications in sustainable industrial cycles, particularly in strategic areas. The focus is on the development of Membrane Crystallizers (MCr) for brine treatment and the use of molecular dynamic simulation for selecting appropriate membrane materials. The potential of membrane reactors for CO2 valorization through new designs is highlighted. Additionally, the article discusses exergy analyses and new metrics for comparing membrane operations to conventional ones in the logic of Process Intensification.
CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION
(2023)
Article
Engineering, Chemical
Yanyan Ye, Tongyu Li, Yanmei Zhao, Junkuo Liu, Dongwei Lu, Jianqiang Wang, Kai Wang, Yingjie Zhang, Jun Ma, Enrico Drioli, Xiquan Cheng
Summary: In this study, we developed a facile approach to fabricate superhydrophobic polylactic acid (PLA) nanofiber membranes through coaxial electrospinning technology. By incorporating fluorine modified SiO2 clusters and polydimethylsiloxane coatings, the resulting membranes exhibited excellent hydrophobic properties and efficient water droplet removal.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Review
Chemistry, Multidisciplinary
Francesca Alessandro, Francesca Macedonio, Enrico Drioli
Summary: In recent decades, membrane-based processes have been widely used in various industrial processes. Membrane distillation, a thermally driven separation process, allows only vapor molecules to transfer through a microporous hydrophobic membrane. Wetting and temperature polarization negatively affect the performance of membrane distillation, but advanced membranes have been developed to overcome these issues. This review focuses on the basic concepts, membrane properties, and advances in membrane materials associated with membrane distillation. It also discusses the use of photothermal materials for solar-driven membrane distillation applications.
CHEMISTRY-SWITZERLAND
(2023)
Article
Green & Sustainable Science & Technology
Pasquale Francesco Zito, Adele Brunetti, Giuseppe Barbieri
Summary: This study investigated the concentration and purification of hydrogen from multicomponent gas mixtures using simulations of multi-stage membrane configurations. The results showed that carbon and polymeric membranes in multi-stage configuration can increase the hydrogen content in the gas mixture, while Pd-alloy membranes can achieve high-purity hydrogen recovery. The integrated process of polymer/carbon membranes and Pd-alloy membranes reduces operating pressure and saves costs.
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)
