Article
Engineering, Environmental
Wanwen Shan, Jiang Du, Kai Yang, Tianbin Ren, Decheng Wan, Hongting Pu
Summary: A novel superhydrophobic and superoleophilic polystyrene/carbon nanotubes foam (PCF) was successfully fabricated for oil/water separation, with high absorption capacity and fast absorption rate. The foam also efficiently removes organic liquids and shows potential in oil spill treatment and chemical accident remediation.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Chemistry, Analytical
Sangwoo Kim, Minseok Kim, Suhyeon Kim, Bumjoo Kim, Geunbae Lim
Summary: This study reported a method for continuous and filterless separation of submicron-scale oil droplets using a three-dimensional printed microfluidic free-flow electrophoresis device. By controlling parameters such as applied voltage, recovery ratio, flow velocity, solution concentration, and flow-channel dimension, successful separation of various submicron-scale oil droplets was achieved, with examination of separation performance and surface charge status. The future scale-up of the proposed microfluidic electrodialysis system holds promise for treating industrial oily wastewater and relevant applications.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Engineering, Chemical
Elshan Bonyadi, Ali Sallakh Niknejad, Farzin Zokaee Ashtiani, Saeed Bazgir, Ali Kargari
Summary: A novel porous polycarbonate (PC) membrane was fabricated using an immersion-precipitation process, and the hydrophobicity was enhanced by spraying polystyrene (PS) microbeads on the PC support using an air-assisted electrospraying process. The PS/PC membrane exhibited outstanding wetting resistance and improved performance in direct contact membrane distillation (DCMD) evaluation.
Article
Chemistry, Multidisciplinary
Haoran Chen, Riyuan Wang, Weiming Meng, Fanglin Chen, Tao Li, Dingding Wang, Chunxiang Wei, Hongdian Lu, Wei Yang
Summary: A superhydrophobic macroporous material composed of hollow hemispherical MXene was synthesized, achieving high porosity and surface roughness for improved water contact angle and separation efficiency. This work presents a facile approach for transforming hydrophilic 2D MXene into superhydrophobic 3D HSMX with potential applications in environmental remediation.
Article
Chemistry, Physical
Jiuqing Liu, Zikun Hong, Fangfang Zhu, Qihou Li, Jie Li, Meng Liu, Cheng Wang, Feifei Song, Lishun Bai, Fanli Zeng
Summary: In this study, a gel polymer electrolyte based on SPEI/PEI blending separator was fabricated using non-solvent-induced phase separation method. The addition of SPEI polymer significantly influenced the morphology of the separator, leading to improved porosity and ion conductivity. The lithium-sulfur battery using SPEI/PEI blending separator exhibited lower capacity decays and higher cycle stability compared to other separators, indicating the potential of this material for high-performance rechargeable lithium-sulfur batteries.
Article
Chemistry, Physical
Li-Jing Zhu, Ming Yang, Gang Wang, Zhi-Xiang Zeng, Zheng-Feng Jia
Summary: Superoleophobic and anti-oil adhesion membranes were prepared using vapor-induced phase separation and sulfonated dopamine deposition. The resulting membranes showed excellent performance in removing emulsified toluene from water.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Environmental Sciences
Fereshte Damavandi, Joao B. P. Soares
Summary: This study proposes a solution to efficiently remediate oil spills on water using polystyrene magnetic nanocomposite blends. The blending technique reduces cost and enhances oil absorption capability, making the new absorbents promising alternatives for recovering spilled oil in fresh and marine water.
Article
Agricultural Engineering
Xinlu Liu, Xiaoqian Chen, Huiyang Bian, Shuzhen Ni, Zongquan Li, Na Liu, Menghua Qin, Fengshan Zhang
Summary: Highly hydrophobic fabrics were prepared by chelating lignin with metal ions. Different lignin/metal ion systems greatly affected the surface roughness and energy of the fabrics. The formation of homogeneous spherical particles on the fabric surface contributed to the minimal contact area with water droplets, resulting in highly hydrophobic properties. The alkali (AL)/FeIII@cotton fabric achieved a maximum water contact angle of 149.9 degrees and showed excellent oil-water separation efficiency and stability.
INDUSTRIAL CROPS AND PRODUCTS
(2023)
Article
Chemistry, Multidisciplinary
Hee-Jeong Choi
Summary: The aim of this study was to adsorb Ca, K, Mg, and Na from seawater using sulfonated cornstalk. The results showed that surface modified cornstalk with sulfuric acid had higher ion exchange capacity and adsorption efficiency compared to non-sulfonated cornstalk. This is significant not only for recycling ligno-cellulosic waste, but also for adsorbing valuable resources from seawater.
KOREAN JOURNAL OF CHEMICAL ENGINEERING
(2022)
Article
Engineering, Environmental
Zaichao Guo, Yujing Wang, Zhihao Liang, Zhenhua Zhang, Jianjun Xie, Xiaoyu Gui, Borui Hou, Dan Mo, Liang Lu, Huijun Yao
Summary: Due to the increase in oil spills and high organic contamination, a low-cost and efficient oil/water separation technology is necessary. Membrane separation technology, specifically PET ion track-etched membranes modified with hydrophobic propyl groups, was found to have a water contact angle of 140.81° and exhibited excellent hydrophobic properties. The modified membranes showed a high oil/water separation ratio of 99.87% and a flux of 12,158.24 L/m(2)center dot h with good running stability.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Chemistry, Physical
Guangbo Zeng, Dongqing Zhang, Liuming Yan, Baohua Yue, Ting Pan, Yidong Hu, Shufa He, Hongbin Zhao, Jiujun Zhang
Summary: The side-chain optimized PPO-g-PSSA synthesized by controlled atom-transfer radical polymerization (ATRP) exhibits a balance between water-resistance and sulfonation degree, with suitable proton conductivity. The optimized PPO-g-0.08PPSA-13 shows high proton conductivity at different temperatures without sacrificing water resistance.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Engineering, Chemical
Ran Wei, Bo Yang, Chao He, Lunqiang Jin, Xiang Zhang, Changsheng Zhao
Summary: Intelligent materials with switchable superhydrophilic/superhydrophobic properties were developed for efficient oil-water separation, using versatile and robust poly(ionic liquid) coatings on different substrates. The materials showed high separation performances and potential applications in various fields, demonstrating the importance and versatility of switchable superwettability in separation processes.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Environmental
S. A. D. A. Sumithraarachchi, B. D. K. K. Thilakarathna, Jayasundera Bandara
Summary: Investigation of special wetting materials for oil-water separation showed that enhanced superhydrophobic properties were achieved by cross-linking polystyrene with acrylic acid on TiO2 nanoparticles. The membranes fabricated demonstrated exceptional oil-water separation efficiencies and flux rates due to their excellent oil-wetting properties. It was confirmed that the oil-water separation efficiency, reusability, durability, and hydrophobicity of the membranes can be enhanced through appropriate fabrication methods.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Engineering, Chemical
Natalya Zhilyaeva, Evgeny Sofronov, Elena Mironova, Nina Shevlyakova, Vladimir Tverskoy, Irina Stenina, Andrey Yaroslavtsev
Summary: The separation of olefins from paraffins in a mixture using facilitated transport membranes is crucial for the production of macromolecular compounds. Polyethylene membranes, grafted with sulfonated polystyrene in different ionic forms, were used to separate ethylene/ethane mixture for the first time. The study investigated the effects of sulfonation time, relative humidity, and ionic forms on the separation of ethylene.
Article
Chemistry, Multidisciplinary
Gwanwon Lee, Seong In Park, Hun Yi Shin, Han-Ik Joh, Sung -Soo Kim, Sungho Lee
Summary: Polystyrene (PS) was chemically treated with sulfuric acid and paraformaldehyde (PFA) to increase crosslink density, resulting in carbonaceous materials with high yield after carbonization. The carbon yield of the stabilized PS was considerably higher than pristine PS and sulfonated PS without PFA, attributed to its superior crosslinking and sulfur bridges. Further thermal treatment formed an intermediate structure between hard and soft carbons. This solid-to-solid transformation from PS to carbonaceous substances can be universally applied to various PS wastes.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2023)
Article
Chemistry, Physical
Yekai Zhang, Shuai Wang, Hong Zhong, Xin Ma, Zhanfang Cao
Summary: In this paper, a self-supporting catalyst-Ni3S2@FeCrMoSx/NF was prepared using metal organic frameworks as templates. The morphology of the pre-catalyst was significantly changed after the sulfidation reaction, leading to a remarkable improvement in the composition and catalytic performance of the catalyst. The Ni3S2@FeCrMoSx/NF catalyst exhibited low overpotential, high electrochemical stability, and a low Tafel slope, which can be attributed to the increased electrochemical surface area, synergistic effect among multi-metals, and the synergistic effect of polymetallic sulfides generated by sulfidation.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Yong Mo, Xin Ma, Shuai Wang, Hong Zhong, Jia Yang, Zhanfang Cao
Summary: This study investigates the preparation of chromium-free passivation films on electroplated zinc surfaces using meta-aluminates and EDTA as passivators. The results show that the meta-aluminate passivation film reinforced with EDTA has improved corrosion resistance, approaching or reaching the level of hexavalent chromium passivation film.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Chemistry, Physical
Song Zou, Shuai Wang, Xin Ma, Jia Yang, Hong Zhong
Summary: To improve the flotation separation of sulfide lead-zinc ores, a novel collector called MDPE was designed and synthesized. Surface tension tests showed that MDPE had higher surface activity and greater hydrophobicity compared to the conventional collector Ester-105. Microflotation experiments revealed that MDPE achieved higher flotation recovery of galena (90.75%) and significantly improved the flotation selectivity against sphalerite.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Green & Sustainable Science & Technology
Xiang Liu, Jiali Tang, Likang Fu, Hao Wang, Shuai Wang, Chao Xiong, Shixing Wang, Libo Zhang
Summary: In order to efficiently and selectively remove lead ions from industrial wastewater, researchers synthesized a novel Zr-based metal-organic framework adsorbent (UiO-DCCA) with a novel N,N'-(4carboxylic-pyridine-2,6-diyl) dipicolinimidamide ligand for the efficient and selective capture of Pb(II). The selective adsorption experiment showed unique affinity of UiO-DCCA for Pb(II), with a maximum adsorption capacity of 353.29 mg/g. This study demonstrates the value of new self-designed organic ligands in metal-organic framework materials for selectively capturing heavy metal ions.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Materials Science, Multidisciplinary
Shuai Wang, Ying Jiang, Yufeng Guo, Zhuang Yang, Feng Chen, Guang Li, Lingzhi Yang
Summary: In this study, the behavior of chromium during the smelting of nickel laterite ore was investigated. The suitable slag composition and conditions for achieving high recovery rates of chromium, iron, and nickel were determined. It was found that the slag basicity and MgO content played important roles in the separation of chromium and iron from the slag.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Engineering, Chemical
Lujun Wang, Jieyu Zhang, Hang Zhang, Yinke Wang, Yijian Zheng, Yi Zuo, Kai Zhu, Feipeng Jiao
Summary: This study derived an accurate and concise equation to relate the contact angle and chemical composition of a composite surface, and verified it by measuring the apparent water contact angle on a special uniform surface. The linear relationship between the cosine value of the contact angle and modification ratio was confirmed, and this conclusion was applied to the study of membrane separation performance. The water flux of cellulose membranes modified by chlorosulfonic acid showed a good linear relationship with the modification ratio.
CHEMICAL ENGINEERING SCIENCE
(2023)
Article
Environmental Sciences
Guangyu Duan, Xintong Li, Xin Ma, Wei Zhong, Shuai Wang
Summary: A novel PAPDA resin was developed for the effective removal of Cu2+ and Ni2+ from heavy metal wastewater. The resin exhibited high adsorption capacities and affinity towards Cu2+ and Ni2+ ions. The results showed that PAPDA resin is a promising and environmentally friendly adsorbent for the treatment of heavy metals-containing wastewater.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Engineering, Chemical
HuiXiang Zhou, ZhongYan Luo, Shuai Wang, Xin Ma, Zhanfang Cao
Summary: An innovative process of iron-lithium separation and cathode materials regeneration from used LiFePO4 batteries is proposed, which promotes sustainable development and environmental protection.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Engineering, Chemical
Hongyu Sun, Xin Ma, Lingyun Fei, Zhanfang Cao, Hong Zhong, Shuai Wang
Summary: This study successfully applied a multifunctional surfactant, 2-dodecanoylamino-pen-tanedioic acid (DPA), to achieve flocculation and recovery of fine rhodochrosite particles. The use of DPA resulted in larger aggregation compared to sodium oleate (NaOL), leading to enhanced collecting ability for fine rhodochrosite particles. The formation of weak-to-medium hydrogen bonds among the functional groups in the DPA complex further strengthened the aggregation between rhodochrosite particles. These findings provide new insights into the aggregation generation among fine particles in the presence of surfactants with multiple functional groups.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Chemistry, Physical
Qiren Wang, Shuai Wang, Xin Ma, Zhanfang Cao, Chao Zhang, Hong Zhong
Summary: A green method for producing electrolytic manganese metal was developed using solvent extraction to address the challenges of impurity magnesium and ammonia nitrogen in electrolyte. The process involved leaching, heavy metal removal, solvent extraction, stripping, and electrolysis. Neodecanoic acid was used as an extractant with excellent separation capacity for impurity magnesium. The electrolytic manganese metal produced met the Chinese national standard for DJMnD grade products and had high resource utilization and clean production advantages.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Engineering, Chemical
Lingyun Fei, Xin Ma, Hongyu Sun, Shuai Wang, Zhanfang Cao, Hong Zhong, Lanqing Deng
Summary: A novel Y structure multi-functional surfactant, DHBA, was developed for the flotation recovery of rhodochrosite. It exhibited excellent collecting ability and selectivity for rhodochrosite, and improved the surface hydrophobicity of rhodochrosite.
MINERALS ENGINEERING
(2023)
Article
Engineering, Chemical
Wenfei Wang, Xin Ma, Qiyang Lin, Hong Zhong, Zhiyong Gao, Shuai Wang
Summary: Xanthate derivative PBAHX was designed to selectively separate chalcopyrite from pyrite, exhibiting superior selectivity and lower odor intensity compared to the traditional SIBX. The adsorption model and the presence of hydrogen bonds explain the differences in flotation results and odor intensity. PBAHX shows potential as a green and effective alternative for sulfide mineral flotation.
MINERALS ENGINEERING
(2023)
Article
Engineering, Chemical
Song Zou, Shuai Wang, Xin Ma, Jia Yang, Hong Zhong
Summary: Efficient and selective flotation separation of chalcopyrite and pyrite in copper-sulfur ores was achieved by using a newly-synthesized organic compound MDPE as a flotation collector. MDPE showed superior flotation selectivity for chalcopyrite against pyrite at low alkalinity (pH = 8.5), and had a stronger adsorption affinity towards chalcopyrite. The formation of Cu-MDPE complexes with C-S-Cu structure was confirmed to be responsible for the chemical absorption of MDPE on chalcopyrite surfaces.
MINERALS ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Dong Cao, Shuai Wang, Xin Ma, Jia Yang, Hong Zhong
Summary: A novel C=O-NOH-contained compound was synthesized and used for the extraction and recovery of copper from sulfate solution. Dodecyl phenyl ethyl hydroxamic acid (DPEHA) exhibited high selectivity to Cu(II) and strong separation effect compared to other extractants. The investigation of extraction mechanism revealed that O atoms in C=O and O-H groups of DPEHA operated as active sites, enabling powerful chelation with Cu(II) by forming stable five-membered rings. The high copper extraction efficiency and selectivity, along with the simple synthesis of DPEHA, make it a potential selective Cu(II) extractant and contribute to the research and development of economical Cu(II) extractants.
SOLVENT EXTRACTION AND ION EXCHANGE
(2023)
Article
Engineering, Environmental
Hao Wang, Shuai Wang, Shixing Wang, Likang Fu, Libo Zhang
Summary: Due to its irreversible toxicity and harm to human health, lead contamination has attracted a lot of attention. Therefore, the development of low-cost and high-performance removal methods has become a popular issue. In this study, a novel metal-organic framework (AMO-MOF) was developed for the selective adsorption of Pb(II) from water. AMO-MOF inherits the structural characteristics of mesoporous materials and has a specific surface area of 255.251 m2/g. The adsorption reached equilibrium at 180 min, and the maximum adsorption capacity of AMO-MOF for Pb(II) was 472.73 mg/g. The adsorption mechanism mainly involves the chelation and electrostatic interaction of N and O-containing functional groups on the adsorbent with Pb(II). The excellent adsorption performance of AMO-MOF for Pb(II) suggests its great potential for practical environmental remediation.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
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)