Article
Engineering, Chemical
Imtiaz Afzal Khan, Yong Soo Lee, Jong -Oh Kim
Summary: The study aimed to evaluate the membrane degradation for poly-vinylidene fluoride (PVDF) membranes exposed to chemically enhanced pretreated (CEPT) feed water after 10 clean-in-place (CIP) cycles. The membrane pore size distribution, symmetry, and bond structure were analyzed using various methods. Severe damage to the membrane pores and significant structural variation were observed with untreated feed water, especially under constant flux (CF) mode. Membranes exposed to CEPT feed water exhibited a recovery of initial membrane flux, with a decrease in irreversible fouling.
Article
Environmental Sciences
Qiwen Mei, Pengfei Zheng, Wenhao Ma, Ihnsup Han, Min Zhan, Bing Wu
Summary: Despite significant achievements in ceramic membrane bioreactor applications, membrane fouling still poses a challenge for the long-term performance of ultrafiltration ceramic membrane bioreactors (UCMBRs) in high-strength textile wastewater reclamation. This study systematically evaluated the effects of ultrafiltration membrane pore sizes, cleaning strategies, and foulant distribution on system performance using real textile wastewater effluent over a period of more than three months. The results showed that the UCMBR system achieved high removal efficiencies for chemical oxygen demand and total nitrogen, but irreversible fouling on the UF membrane surface remained a problem. However, CO2 backwash showed promise for effective fouling control without the use of environmentally harmful cleaning chemicals. The cake-intermediate and complete-standard models were found to be suitable in explaining fouling mechanisms in large and small-pore-sized UF membranes, respectively.
Article
Chemistry, Applied
Qianqian Wei, Chengyuan Wu, Jing Zhang, Zhenyu Cui, Tao Jiang, Jianxin Li
Summary: In this study, four types of ultrafiltration membranes with different antifouling capacities were prepared by introducing maleic anhydride (MA), polyethylene glycol (PEG), polyethyleneimine (PEI), and PEG-g-PEI via surface deposition-grafting technique. The membrane grafted with PEG-g-PEI exhibited superior anti-protein-fouling capacity, with a high flux recovery rate, low irreversible resistance, and reduced adhesion of bovine serum albumin (BSA) on the membrane surface. The proposed active-passive synergistic mechanism of antifouling enhanced the dispersion and flocculation capacities of the grafted functional polymer chains, along with the repulsion effect of the hydration layer.
REACTIVE & FUNCTIONAL POLYMERS
(2021)
Article
Chemistry, Multidisciplinary
Yuyang Yao, Junjie Mu, Yuan Li, Yanjing Ma, Jingwen Xu, Yuna Shi, Junbin Liao, Zhenlu Shen, Jiangnan Shen
Summary: A rechargeable multifunctional anti-biological fouling anion exchange membrane (AEM) is developed using mussel-inspired L-dopa connection function. Cobalt nanoparticles (Co NPs) and N-chloramine compounds are deposited on the membrane surface to inhibit biofilm formation. The membrane shows effective anti-biofouling abilities against Gram-negative and Gram-positive bacteria. Molecular dynamics simulation reveals the mechanism of anti-adhesion at an atomic level. This work provides valuable guidelines for designing membrane materials resistant to biological contamination.
Article
Biochemical Research Methods
Jing Hu, Jie Gao, Xiaomin Fang, Zijing Liu, Fan Wang, Weili Huang, Hua Wu, Guodong Zhao
Summary: Drug combination therapies are superior to monotherapy in cancer treatment. Computational methods have been developed to predict drug pairs with potential synergistic functions. We propose a deep neural network model called DTSyn based on a multi-head attention mechanism to identify novel drug combinations. DTSyn achieved high performance and improved interpretability by capturing chemical-gene and gene-gene associations and extracting chemical-chemical and chemical-cell line interactions.
BRIEFINGS IN BIOINFORMATICS
(2022)
Article
Materials Science, Multidisciplinary
Yuanqiang Zhu, Qingqing Sun, Yuan Wang, Junlei Tang, Yingying Wang, Hu Wang
Summary: The study showed that the mixture corrosion inhibitors of OIM and CYS with a ratio of 3 to 1 exhibit the best synergistic effect in preventing carbon steel corrosion, forming a bilayer adsorption mechanism. This can effectively prevent the corrosive particles from diffusing through the film, providing a helpful guideline for further studying the synergistic inhibition effect of OIM and other chemicals.
Article
Biotechnology & Applied Microbiology
Shan Wan, Huikai Chen, Tian Zhang, Bokai Liao, Xingpeng Guo
Summary: The parsley extract (PLE) was used as a corrosion inhibitor in combination with iodide, exhibiting an optimal corrosion inhibition efficiency of 99%. The combined inhibitor showed a favorable long-term corrosion inhibition effect, with over 90% inhibition efficiency maintained after 144 hours. The introduction of iodide led to a higher negative charge amount on the carbon steel surface, facilitating the interaction between the corrosion inhibitor and Fe atoms.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2021)
Article
Pharmacology & Pharmacy
Fang Luo, Ting Zhong, Ying Chen, Qianqian Guo, Ling Tao, Xiangchun Shen, Yanhua Fan, Xingjie Wu
Summary: Dual-ligand targeting nanoplatforms have shown promise for improving chemotherapy specificity, but off-target delivery persists as a problem. To address this, a dual-ligand synergistic targeting (DLST) nanoplatform was developed, which guides chemotherapy specifically to cancer cells overexpressing two receptors. This nanoplatform consists of two different nanocarriers decorated with complementary DNA sequences and loaded with singlet oxygen (O-1(2)) photosensitizer and drug, respectively. In vitro evaluation demonstrated its highly specific tumor treatment with minimized long-term toxicity, making it a highly efficient drug delivery system for DLST chemotherapy with great clinical potential.
Article
Environmental Sciences
Xing Zheng, Muhammad Tariq Khan, Xin Cao, Jean-Philippe Croue
Summary: This study compared the chemical properties and fouling potential of biopolymers extracted from secondary wastewater effluent and surface water during ultrafiltration. It was found that EfOM biopolymers were enriched in protein structures and caused more irreversible fouling compared to NOM biopolymers. Additionally, the presence of divalent cations increased the irreversibility of fouling, with a more significant impact on NOM fouling.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Engineering, Environmental
Seung-Ju Choi, Sangsik Kim, Sung-Ju Im, Am Jang, Dong Soo Hwang, Seoktae Kang
Summary: This study investigates the use of an ionic liquid as a cleaning agent to remove irreversible foulants on membrane surfaces. The results show that the introduction of the ionic liquid leads to the swelling and removal of fouling layers, resulting in enhanced control of membrane fouling. This cleaning strategy can reduce the usage of cleaning chemicals and minimize the environmental impact.
Article
Nanoscience & Nanotechnology
Ku Im, Q-Han Park
Summary: The mechanism of perfect anti-reflection for acoustic waves is presented using nonlocal metamaterials to compensate for impedance mismatch. The characteristics of spatio-temporal dispersion are analyzed and the issue of total internal reflection is addressed. The practical design of the nonlocal layer using metamaterials is explained, and its omni-directional frequency-independent behavior is confirmed through numerical calculations.
Article
Food Science & Technology
Wenli Shi, Guowen Zhang, Yijing Liao, Xiaoyun Fei, Deming Gong, Xing Hu
Summary: Kaempferol, a natural flavonoid compound, was found to reversibly inhibit the activity of AChE through the formation of a complex with the enzyme, leading to a decrease in its catalytic activity. Additionally, kaempferol was found to increase the binding affinity of other drugs to AChE, resulting in a synergistic inhibition of its activity. This study provides new insights into the potential use of kaempferol as a functional food component for the treatment of AD.
Article
Engineering, Chemical
Biswajit Mishra, Jayanta Ghosh, Nidhi C. Dubey, Bijay P. Tripathi
Summary: Membrane-based filtration technologies have the potential to address global freshwater scarcity. A surface design method using bifunctional coating has been developed to decrease fouling and biofouling. This method involves grafting a polymer layer on a membrane, resulting in low fouling and microbiological species death.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Ronghua Ma, Xiaolong Lu, Chunrui Wu, Shaozhe Zhang, Shuyun Zheng, Kai Ren, Jie Gu, Hanli Wang, Hongmei Shen
Summary: In this study, a porous membrane with dual pH-responsiveness effects was successfully fabricated using a facile and eco-friendly method. The membrane exhibited excellent pollution-resistant properties and was easy to clean. It also showed outstanding performance in the treatment of wastewater.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Engineering, Environmental
Kunal Gupta, Shankararaman Chellam
Summary: The study found that electrostatic interactions play a minimal role in irreversible fouling, while non-electrostatic direct EfOM-membrane interactions, such as hydrophobic interactions, dominantly influence irreversible fouling. Additionally, caution should be exercised when interpreting results from lab-scale studies using model organic matter species.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Energy & Fuels
Yuzhe Liu, Hao Wang, Chengcai Li, Shaohui Wang, Lin Li, Chengwen Song, Tonghua Wang
Summary: This study utilized waste PI film to fabricate flaky porous carbon materials with tailored pore structure and functional groups through KOH activation, achieving excellent electrochemical performance. The materials showed high specific capacitance, good capacitance retention rate, and low impedance, making them promising electrode materials for supercapacitors.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Engineering, Chemical
Zhaowei Cui, Hong Wang, Zishang Chen, Yujun Zhang, Hao Tian, Zhen Yin, Jianxin Li
Summary: The electrocatalytic membrane reactor (ECMR) with Pt nanoparticles loaded on a Ti membrane electrode was able to efficiently oxidize cyclohexanone to produce sodium adipate under mild conditions. Optimization experiments revealed the significant impact of different operating parameters on the conversion of cyclohexanone and the selectivity to sodium adipate. The high performance of the ECMR was attributed to electrocatalytic oxidation, convection-enhanced mass transfer, and timely product removal.
INTERNATIONAL JOURNAL OF CHEMICAL REACTOR ENGINEERING
(2022)
Article
Engineering, Chemical
Wenhui Ji, Huibin Geng, Zishang Chen, Hao Dong, Hideto Matsuyama, Haitao Wang, Hong Wang, Jianxin Li, Wenxiong Shi, Xiaohua Ma
Summary: This study demonstrates the synthesis of highly efficient hydrogen separation membranes using an ozone oxidation method. These membranes exhibit high permeability, selectivity, and offer a new approach in the search for high-performance hydrogen separation membranes.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Zhaohui Yin, Kun Zhang, Na Ma, Xi Liu, Zhen Yin, Hong Wang, Xue Yang, Ye Wang, Xuetao Qin, Danyang Cheng, Yumei Zheng, Lili Wang, Jianxin Li, Zongwei Xu, Na Tang, Bowen Cheng, Dequan Xiao, Ding Ma
Summary: In this study, a robust electrochemical strategy with an efficient membrane electrode was developed for simultaneous removal of organic pollutants and production of pure hydrogen in wastewater. The obtained membrane electrode showed superior degradation performance and stable hydrogen production, with significantly reduced energy consumption.
SCIENCE CHINA-MATERIALS
(2023)
Article
Chemistry, Physical
Ruisong Xu, Mengjie Hou, Yue Wang, Lin Li, Zonglin Pan, Chengwen Song, Tonghua Wang
Summary: The carbon molecular sieve (CMS) membranes derived from a novel precursor polymer of phenolphthalein-based poly(arylene ether ketone) (PEK-C) exhibit high C2H4 permeability and superior C2H4/C2H6 selectivity, showing great potential for industrial applications of C2H4/C2H6 separation.
Article
Chemistry, Physical
Hao Tian, Yujun Zhang, Ziyang Zhang, Tingting Lv, Lei Bian, Hong Wang, Jianxin Li, Yusuke Yamauchi, Zhong-Li Wang
Summary: This study demonstrates a new technology to directly convert cyclohexane to adipic acid by electrocatalytic water oxidation, which generates hydroxyl radicals and achieves optimized conversion and selectivity. This provides opportunities for oxidatively converting inexpensive hydrocarbons to value-added chemicals.
Article
Electrochemistry
Jian Gao, Xuejiao Hu, Jianzhou Gui, Hong Wang, Yuan Li, Xiaoyao Tan, Zhen Yin, Na Ma
Summary: Non-precious transition metal oxides, such as the perovskite-type oxide LSCF, show potential as cost-effective alternatives to noble metal electrocatalysts. However, the catalytic activity of LSCF prepared by conventional methods for the oxygen reduction reaction (ORR) needs improvement. In this study, LSCF prepared by spray pyrolysis process demonstrates high ORR activity, attributed to its rich surface edges and oxygen vacancy.
JOURNAL OF APPLIED ELECTROCHEMISTRY
(2023)
Article
Engineering, Chemical
Shenyi Tang, Junjie Yang, Biao Wu, Jing Zhang, Jianxin Li, Benqiao He, Hong Wang, Zhenyu Cui
Summary: In this work, an organic-inorganic hybrid separation layer was fabricated on the membrane outer surface using polyvinylamine-tannic acid-metal ion co-deposition, dual cross-linking, and biomineralization. The introduction of mineralized substances significantly improved the separation performance of the NF membrane, increasing permeability by 2.7 times and maintaining high removal capacity for Mg2+ and Ca2+. The NF membrane also exhibited satisfactory acid resistance, anti-fouling capacity, and stable operation, making it a promising candidate for wastewater recovery and rapid desalination.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Engineering, Chemical
Yatao Weng, Nanwen Li, Zelong Xu, Jianjun Huang, Lujun Huang, Hong Wang, Jianxin Li, Yali Wang, Xiaohua Ma
Summary: Two novel highly crosslinked and partially carbonized molecular sieve membranes (CCMSM) were reported, which partially achieved the goals of high performance, robustness, and reliability. By thermally treating a bromomethyl substituted alternative intrinsic microporous polymer at low temperatures, two PIM-BA-340 and PIM-BA-350 CCMSMs with excellent solvent resistance, thermal stability, and good mechanical strength were obtained.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Education & Educational Research
Yimin Tong, Christian D. Schunn, Hong Wang
Summary: The number of raters in peer assessment has a significant impact on its reliability and validity. However, this aspect has been rarely studied. The study examines how changing the number of required peer assessments and raters per document affects the reliability and validity of peer assessment for tasks at different levels of complexity.
STUDIES IN EDUCATIONAL EVALUATION
(2023)
Article
Electrochemistry
Jian Gao, Mengxin Zhou, Xinyao Wang, Hong Wang, Zhen Yin, Xiaoyao Tan, Yuan Li
Summary: The oxygen reduction reaction (ORR) is crucial for clean energy storage and conversion. However, due to slow kinetics and expensive catalyst requirements, the wide application of fuel cells and other clean power sources is hindered. Therefore, finding low-cost metal catalysts is of great importance. In this study, a Co3O4 catalyst supported on N-doped carbon was prepared and exhibited similar electrocatalytic activity to commercial Pt/C catalysts.
Article
Engineering, Chemical
Jiawei Hou, Shixuan Guo, Nigel Graham, Wenzheng Yu, Kening Sun, Ting Liu
Summary: A novel 2D composite membrane based on r-HGO and MXene materials was developed, demonstrating exceptional performance for water treatment in terms of permeability, pollutant rejection, and physical stability. The optimization of preparation conditions and material proportions can result in high water flux and efficient removal of pollutants.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Retraction
Engineering, Chemical
Chang Liu, Jinghong Liu, Liang Zhu, Shanfu Tang, Huixin Xiong
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Rui Gao, Caihong Liu, Andreia F. Faria, Qiang He, Chun Yang, Jun Ma
Summary: A novel copolymer architecture has been developed to address biofouling concerns in thin-film composite (TFC) membranes by integrating anti-fouling, bactericidal, and fouling-release functions. The multifunctional membrane demonstrates promising anti-adhesive properties, self-cleaning ability, and high flux recovery rate.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Alexander T. Bridge, Noah P. Wamble, Matthew S. Santoso, Joan F. Brennecke, Benny D. Freeman
Summary: This study demonstrates the reproducible preparation of high-flux defect-free asymmetric gas separation membranes using Cyrene(TM) as a majority dope formulation component. By adjusting the volume ratios of Cyrene(TM) and THF, as well as the concentrations of Matrimid(R) and the dry step time, optimal membrane performance is achieved.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Alessandra Imbrogno, Han Ya Lin, Babak Minofar, Andrea Iris Schaefer
Summary: In this study, a composite nanofiber membrane containing cross-linked beta-cyclodextrin-epichlorohydrin was prepared and evaluated for the removal of steroid hormones. The results showed that the membrane had high adsorption capacity and the ability to form a specific inclusion complex interaction with the hormones, indicating its potential application in hormone removal.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Bora Shin, Jaewon Shin, Yanuar Chandra Wirasembada, Ki Young Park, Jinwoo Cho
Summary: This study develops a mathematical model to estimate the initial flux of volatile fatty acids in the direct contact membrane distillation process. It identifies the parameters affecting the flux and their relationship with pH.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Yi-Jui Yeh, Jr Rong Liou, Wei Lin, Kuo-Lun Tung, Wei-Hung Chiang
Summary: This study demonstrates an effective plasma engineering method to create nitrogen-doped graphene quantum dot (NGQD)-inorganic nanocomposites for tunable molecular separation. The composite materials show high separation efficiency and controllable nanopore structures, making them potentially valuable for various applications.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Horacio Lopez-Marques, Kristofer L. Gleason, Manuel Aguilar-Vega, Rita Sulub-Sulub, J. Ehren Eichler, Hyeonji Oh, C. Buddie Mullins, Benny D. Freeman, Manish Kumar
Summary: In this study, water transport properties in Carbon Molecular Sieve (CMS) membranes were investigated. It was found that membranes synthesized at different pyrolysis temperatures exhibited varying water permeabilities. Compared to other polymeric materials, CMS membranes showed high water permeability, indicating potential for dehydration applications.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Dmitry A. Alentiev, Roman Yu. Nikiforov, Marina A. Rudakova, Danil P. Zarezin, Maxim A. Topchiy, Andrey F. Asachenko, Nikolay A. Belov, Maxim Bermeshev
Summary: A series of new norbornene-type monomers containing linear and branched substituents were synthesized, and robust thin membranes were prepared by vinyl-addition polymerization. Gas separation performance for the synthesized polymers was evaluated, and the structure of substituent side chains was found to significantly affect gas permeability and CO2 facilitated transport.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Lei Yan, Qi Zhang, Ze Zhang, Gui-Jie Li, Yi Jin, Xin-Lin Zhang, Yan-Yun Sun
Summary: In this study, a continuous, stable and fast ion transport channel was established through in-situ guided cross-linking of zinc alginate hydrogels on a porous membrane, overcoming the negative pore effect and effectively inhibiting the dendrite growth of zinc anodes and interfacial side reactions.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Yuqing Zhang, Ailing Zhang, Huiyang He, Yuting Fan, Yongjiang Li, Song Wang, Sanxi Li
Summary: The Langmuir-Blodgett self-assembly process is used to create an ordered SPEEK membrane, which enhances the proton conductivity by three times compared to conventional solution casting method.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Hasan Ismaeel, David Gibson, Eleonora Ricci, Maria Grazia De Angelis
Summary: In this study, a machine learning-based group contribution method (ML-GC) was developed to predict pure polymer parameters and successfully applied to predict gas solubility and gas solubility isotherms in glassy polymeric membranes. The model showed satisfactory performance on a small dataset, but has the potential to provide more accurate predictions for a wider range of polymers as more data becomes available.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Yi Ji, Yu Sun, Huilin Li, Qiang Fu, Yan Zhang
Summary: Previous studies have shown that vibration- or rotation-based techniques can effectively mitigate fouling during membrane filtration. However, it is difficult to incorporate these techniques with spiral wound modules (SWMs) widely used in water and wastewater treatment. This study developed a prototype membrane system to accommodate angular vibrations with a modified SWM, and experimental results showed that applying angular vibrations can effectively control algal fouling in an SWM with lower energy consumption compared to traditional methods.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Lakshmeesha Upadhayaya, Abaynesh Yihdego Gebreyohannes, Muhammad Wakil Shahzad, Usman T. Syed, Sandra L. Aristizabal, Radoslaw Gorecki, Suzana P. Nunes
Summary: Increasing temperatures worldwide pose a significant health risk, exacerbated by high humidity. Conventional air conditioners contribute heavily to carbon dioxide emissions, with dehumidification being a major factor. Membrane-based dehumidification system offers energy efficiency and non-toxic water vapor removal. This study demonstrates a membrane dehumidification system with polymeric hollow fibers coated with a green polyphenol coating, showing remarkable water vapor transport rate and selectivity. Long-term testing reveals minimal decline in vapor transport and a 4-5 times higher coefficient of performance (COP) compared to conventional dehumidifiers, making it a highly competitive, energy-saving device with reduced emissions and a smaller footprint.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Zhengzhong Zhou, Xue Zhu, Yi Yuan, Shaoqiang Wang, Xiaoshan Meng, Taoli Huhe, Qian Wang
Summary: In this study, lignin, a biomass material, was chemically modified and utilized in the interfacial polymerization process to improve the performance of nanofiltration membranes. The modified membranes showed enhanced hydrophilicity and anti-fouling properties, and the optimization of membrane pore size increased permeability. The study also demonstrated the potential application of the membranes in biogas slurry valorization.
JOURNAL OF MEMBRANE SCIENCE
(2024)