Article
Engineering, Chemical
Ming-Bang Wu, Hao Ye, Zhi-Yuan Zhu, Guo-Tao Chen, Lu-Lin Ma, Shi-Cheng Liu, Lin Liu, Juming Yao, Zhi-Kang Xu
Summary: A new method of interfacial polymerization was reported to prepare positively-charged NF membranes with excellent Mg2+/Li+ selectivity. The surface charges and pore sizes of the polyamide-based layers can be easily adjusted by the reaction time.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Engineering, Chemical
Hongxu Ni, Naixin Wang, Yuye Yang, Mengxin Shen, Quan-Fu An
Summary: Lithium, an important resource, is abundant in Salt Lake, but the high Mg2+/Li+ ratio is the main obstacle to its extraction. Researchers have successfully constructed a positively-charged nanofiltration membrane by incorporating polyethyleneimine (PEI) and layered double hydroxide (LDH) nanosheets on hydrolyzed polyacrylonitrile ultrafiltration membrane. The membrane, crosslinked with glutaraldehyde (GA), exhibited enhanced separation performance for Mg2+/Li+ in an aqueous solution, with a separation factor (SMg2+/Li+) of 18.7 when the Mg2+/Li+ ratio was 10. This membrane showed potential for Mg2+/Li+ separation with its maintained performance for 100 hours.
Article
Engineering, Chemical
Yunhao Li, Shuhao Wang, Wenyuan Wu, Haijun Yu, Ruxin Che, Guodong Kang, Yiming Cao
Summary: This study proposes a new and facile method to prepare nanofiltration membranes with positively charged surface and uniform charge distribution for extracting lithium from Salt Lake brine with high Mg2+/Li+ ratio. The fabricated membranes exhibit higher water flux, MgCl2 rejection, and LiCl/MgCl2 separation factor compared to conventional membranes, indicating their potential for lithium extraction.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Engineering, Chemical
Jiashuai Chen, Jing Wang, Zhi-Yong Ji, Zhiyuan Guo, Panpan Zhang, Zhihui Huang
Summary: This study developed a simple sequential interfacial polymerization method to adjust the surface charge and pore size of electro-nanofiltration membranes (ENFMs), resulting in excellent selectivity. The research is of great significance for addressing the challenges between lithium and magnesium, and has made significant progress in lithium extraction.
Article
Engineering, Chemical
Qiuyan Bi, Chao Zhang, Jiandong Liu, Xingliang Liu, Shiai Xu
Summary: A nanofiltration (NF) membrane with positive charges was prepared to separate Mg2+ and Li+ from high Mg/Li ratio brine. The introduction of BHC-CN improved salt permeation and selectivity, with the membrane showing positive charge at pH < 7.33 and good stability in separating Mg2+ and Li+.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Nanoscience & Nanotechnology
Changsheng Guo, Yao Qian, Pengbi Liu, Qinglei Zhang, Xianhua Zeng, Zhiwei Xu, Songnan Zhang, Nan Li, Xiaoming Qian, Feiyue Yu
Summary: By regulating the parameters of poly(ethyleneimine)/piperazine interface polymerization, a positively/negatively charged ultrathin Janus nanofiltration membrane was constructed for the separation of Mg2+/Li+. The membrane exhibited a dense polyamide structure in the middle, with one side enriched with carboxyl groups and the other side enriched with amine groups. The membrane showed excellent separation factor, stability, and water permeability flux, with high rejections to MgCl2 and Na2SO4.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Engineering, Chemical
Huanhuan Wu, Haoyue Zhao, Yakai Lin, Xin Liu, Lin Wang, Hong Yao, Yuanhui Tang, Lixin Yu, Haihui Wang, Xiaolin Wang
Summary: A novel thin-film nanocomposite (TFN) nanofiltration (NF) membrane was successfully prepared for recovery of Li+ from Mg/Li mixtures using polymeric amine polyethyleneimine (PEI) and monomeric amine silane coupling agent (3-diamino-methylcyclohexyl triethoxysilane, DTES). The doping of SiO2 into the polyamide network enlarged the membrane pore size, enhanced surface hydrophilicity, and reinforced surface positive charges. The optimized membranes showed improved water flux, higher selectivity, and better rejection rates compared to commercial NF membranes. This study offers a high-performance nanofiltration membrane for recovering lithium and provides a feasible strategy for industrial ion separation.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Engineering, Multidisciplinary
Ping Xu, Jun Hong, Zhenzhen Xu, Hong Xia, Qing-Qing Ni
Summary: A new functional nano-additive, MWCNTs-COOK, was successfully synthesized and introduced into the NF membrane system, improving the membrane's flux and separation performance, breaking through the traditional limit of permeate flux.
COMPOSITES PART B-ENGINEERING
(2021)
Article
Engineering, Chemical
Tianrun Gu, Runnan Zhang, Shiyu Zhang, Benbing Shi, Junhui Zhao, Zhen Wang, Mengying Long, Guangzhe Wang, Ting Qiu, Zhongyi Jiang
Summary: In this study, a positively selective layer for Li+/Mg2+ separation was successfully constructed on the surface of a polyamide nanofiltration membrane through modification, leading to significantly increased membrane surface charge density and high performance in Li+/Mg2+ separation.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Engineering, Chemical
Huawen Peng, Yongjin Hu, Shaoping Li, Jingyi Rao, Qiang Zhao
Summary: This study utilized sulfonium salts to modify polyamide nanofiltration membranes for high performance Mg2+/Li+ separation. The modification resulted in enhanced positive charge and loose structures of the membranes, leading to a 4.3 times improved permeance. The modified membrane exhibited high water permeance and good Mg2+/Li+ selectivity, along with good stability. This study demonstrates the promising potential of sulfoniums for engineering advanced lithium extraction membranes.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Engineering, Chemical
Zhao Yang, Wangxi Fang, Zhenyi Wang, Ruolin Zhang, Yuzhang Zhu, Jian Jin
Summary: The global demand for lithium resources is increasing due to the widespread use of lithium batteries in consumer electronics and electric vehicles. A dual-skin layer nanofiltration membrane with high Mg2+/Li+ selectivity was developed, showing efficient separation of lithium from natural brines.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Nanoscience & Nanotechnology
Li Wang, Danyal Rehman, Peng-Fei Sun, Akshay Deshmukh, Liyuan Zhang, Qi Han, Zhe Yang, Zhongying Wang, Hee-Deung Park, John H. Lienhard, Chuyang Y. Tang
Summary: The study developed a nonpolyamide nanofiltration membrane based on a metal-coordinated structure, demonstrating simultaneously improved water permeance and Li+/Mg2+ selectivity, surpassing the trade-off of permeance selectivity of traditional membranes. The novel membrane also exhibited enhanced anti-biofouling property and pH-responsive characteristics, providing an exciting approach for fabricating high-performance nanofiltration membranes in lithium recovery applications.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Engineering, Chemical
Kuo Chen, Shengchao Zhao, Hongling Lan, Tengteng Xie, Hao Wang, Yuhao Chen, Peng Li, Haixiang Sun, Q. Jason Niu, Chaohe Yang
Summary: In this study, a polyamide layer was prepared on the polyphenol/PEI interlayer-modified polysulfone substrate to enhance the Mg2+/Li+ separation factor and permeability of the nanofiltration (NF) membrane. The NF membrane exhibited a separation factor of 50.7 for Mg2+/Li+ and a permeability of 18.6 L m(-2) h(-1).bar(-1), providing a simple strategy for preparing NF membranes with high separation efficiency and reduced energy consumption.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Engineering, Environmental
Mohsen Moslehi
Summary: Positively charged nanofibrous nanofiltration membranes were prepared using multi-step interfacial polymerization. The membranes exhibited good performance in terms of salt rejection and flux.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Engineering, Chemical
Shiyu Zhang, Runnan Zhang, Runlai Li, Zixuan Zhang, Yafei Li, Hao Deng, Junhui Zhao, Tianrun Gu, Mengying Long, Xiaoyao Wang, Sui Zhang, Zhongyi Jiang
Summary: Inspired by the structure and biological function of arginine, a superstrong basic triaminoguanidine molecule was used to fabricate positively charged polyamide nanofiltration membranes for Li+/Mg2+ separation. The membranes exhibited excellent separation performance and high Li+/Mg2+ selectivity.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Environmental Sciences
Syed Awais Ali, Syed Nasir Shah, Mansoor Ul Hassan Shah, Mohammad Younas
Summary: The CO2 emissions are rapidly increasing due to continuous emissions from industries and the transport sector. Although there was an 8.8% decrease in CO2 emissions in the first half of 2020 due to COVID-19 restrictions, the emissions are rising again and may exceed the estimated level in 2030. The current methods for CO2 separation have limitations, and to overcome this, a supported ionic liquid membrane (SILM) incorporated with a bimetallic metal-organic framework (MOF) of copper and magnesium ions (CuxMgx) and a specific ionic liquid (IL) was developed. The SILM showed improved CO2 permeability and selectivity under humid conditions, making it suitable for industrial flue gases.
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
Engineering, Environmental
Rui Zhang, Jiaye Li, Stephen Jerrams, Shui Hu, Li Liu, Shipeng Wen, Liqun Zhang
Summary: In this study, modified graphene oxide and silica were used to construct composite particles with bridged structures, which were then mixed with styrene butadiene rubber to improve the mechanical and abrasion resistance properties of the composite material.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Jia-Ye Li, De-Yi Zhang, Sheng Mao, Huan Wang
Summary: Few single-molecule experiments have enabled real-time imaging of functional biomacromolecules in native liquid environments. Liquid phase electron microscopy (LP-EM) has shown promise due to its spatial and temporal resolution. Challenges remain in obtaining high-quality data, which may be improved through new liquid cell platforms and machine learning-based data analysis.
CHINESE JOURNAL OF CHEMISTRY
(2023)
Letter
Geosciences, Multidisciplinary
Suning Liu, Ji Chen, Jiaye Li, Tiejian Li, Haiyun Shi, Bellie Sivakumar
Summary: With continued population growth in the future, construction of large dams is considered as one of the best options to meet the increasing demands for water, food, and energy. Selecting appropriate sites for these dams is crucial and should consider factors such as socioeconomic development, water resources availability, topographic characteristics, and environmental impacts. This study identifies the relationship between catchment area and slope of a river reach to evaluate the site selection for large dams.
GEOSCIENCE LETTERS
(2023)
Article
Engineering, Chemical
Muhammad Umar, Muhammad Usman Farooq, Muhammad Shozab Mehdi, Shafiq Uz Zaman, Muhammad Younas, Hezb Ullah, Muhammad Aqif
Summary: Membrane technology with silk fibroin and polymethyl methacrylate blend was prepared and tested for effluent treatment. The addition of fibroin loading improved surface porosity and water permeation. The membrane showed higher affinity for Cr(VI) and achieved rejection rates of 83% and 56% for Cr(VI) and Pb(II), respectively.
POLYMER ENGINEERING AND SCIENCE
(2023)
Article
Engineering, Chemical
Yanghe Liu, Quan Li, Shenghuan Wang, Mengzhu Liang, Yanhong Ji, Zhenyu Cui, Mohammad Younas, Jianxin Li, Benqiao He
Summary: In this study, a new high-performance nanofiltration (NF) membrane with positively and negatively charged groups was developed for efficient Li+/Mg2+ separation. The results showed that the membrane had similar surface and section structure, as well as surface pore size, compared to the original polyamide (PA) membrane. However, the addition of Fe3+ ions improved the Zeta potential of the membrane, indicating the presence of both positively and negatively charged groups on the surface. The membrane exhibited high rejection rates for Mg2+ (97.7%) and permeation rates for Li+ (-87.6%), resulting in a high Li+/Mg2+ separation factor. The fluxes of the three membranes were comparable. These findings suggest that the NF membrane with positively and negatively charged groups has great potential for application in the recovery of lithium from brine.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Engineering, Chemical
Hao-Ran Yang, Bing Li, Chi-Qian Zhang, Jia-Cheng Yang, Yu-Ming Zheng, Mohammad Younas, Yi-Hong Jiang, Zhi-Hua Yuan
Summary: This study successfully applied bipolar membrane electrodialysis (BMED) to separate inorganic salts and reclaim inorganic acids and bases from landfill leachate reverse osmosis concentrate (LLRC). The performance of BMED was improved with optimized operating parameters, resulting in higher acid-base concentrations, desalination rate, and current efficiency with less energy consumption. The reclaimed acids contained 88 wt% HCl and 12 wt% HNO3, while the reclaimed bases were 52 wt% NaOH and 45 wt% KOH. The method showed remarkable economic feasibility with a net profit of $27.630 per 1 m3 LLRC treatment. This research offers a new strategy for the sustainable utilization of inorganic salts from LLRC.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Geriatrics & Gerontology
Mingming Deng, Qin Zhang, Liming Yan, Yiding Bian, Ruixia Li, Jinghan Gao, Yingxi Wang, Jinrui Miao, Jiaye Li, Xiaoming Zhou, Gang Hou
Summary: The plasma GHK levels were significantly decreased in COPD patients and were associated with skeletal muscle mass. GHK-Cu could protect against cigarette smoking-induced skeletal muscle dysfunction via activation of SIRT1, inhibition of protein degradation, reduction of oxidative stress, and promotion of mitochondrial function.
JOURNAL OF CACHEXIA SARCOPENIA AND MUSCLE
(2023)
Article
Engineering, Environmental
Ming Li, Xiwei Cao, Ziqing Wu, Jiaye Li, Ying Cui, Jun Liu, Baoan Li
Summary: This study investigated the denitrifying phosphorus removal process in a single-stage Membrane Aeration Biofilm Reactor (MABR). The results showed that without the addition of any flocculant or precipitant, the TINRE reached 99.79% and the TPRE reached 82.62% under specific influent conditions. The phosphorus content in the substrate sludge was higher than that in the initial biofilm or activated sludge. The presence of PAOs and DPAOs played pivotal roles in phosphorus removal.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Engineering, Chemical
Nehar Ullah, Altaf Ahmad, Rafia Sarfaraz, Saifullah Khalid, Irshad Ali, Mohammad Younas, Mashallah Rezakazemi
Summary: Solar energy provides a clean and abundant alternative to fossil fuels, addressing challenges such as greenhouse gas emissions and resource depletion. This review focuses on the environmental impacts of solar photovoltaic technology throughout its life cycle and highlights potential hazards associated with its use and production, including the release of toxic gases and trace elements. The paper concludes by summarizing recycling techniques that can be used to address these challenges and maximize the benefits of solar photovoltaic technology without harming the environment.
CHEMBIOENG REVIEWS
(2023)
Article
Environmental Sciences
Fan Li, Matteo Rubinato, Tao Zhou, Jiaye Li, Chen Chen
Summary: This study examines the impact of the COVID-19 pandemic on small businesses in Wuhan, China. The results show that the survival rates of businesses affected by the pandemic is not significantly different from those unaffected. Additionally, businesses that had confidence in their abilities and implemented accurate evaluations of their strategies had a higher probability of survival. Actions such as reducing employees, transitioning operations online, and providing rent subsidies and tax reductions were crucial to maintaining businesses that experienced lockdowns. Governments should provide timely support to small businesses in regions with severe impacts, including grants, loans, and temporary tax cuts.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2023)
Article
Engineering, Chemical
Quan Li, Yahui Liu, Yunling Jia, Yanhong Ji, Feng Yan, Jianxin Li, Younas Mohammad, Benqiao He
Summary: A facile route of grafting short chain amino-rich monomers (SCA) onto polyamide (PA) nanofiltration (NF) membrane is proposed for efficient Li+/Mg2+ separation. The SCA grafted NF membrane (PA-g-SCA) shows a more uniform distribution of positively charged groups on the pristine PA layer, leading to high rejection of Mg2+ and high permeation of Li+, resulting in superior Li+/Mg2+ separation performance with a separation factor of 130 even in a high WMg2+/Li+ of 200:1.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Energy & Fuels
Hiwa Abdlla Maarof, Mohammad Shamsi, Mohammad Younas, Mashallah Rezakazemi
Summary: In this study, a model based on a SAH was developed to enhance air turbulence and improve the thermal performance of a solar collector. Validation experiments were conducted to confirm the accuracy of the model. Ray tracing and FEM simulation techniques were used to analyze the optical and thermal properties of the system. The study found that non-flat plate surfaces contribute to wall-induced turbulence and affect air temperatures.
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)