Article
Chemistry, Applied
Yuhui Cui, Guozhen Li, Hanzhu Wu, Siyu Pang, Yan Zhuang, Zhihao Si, Xinmiao Zhang, Peiyong Qin
Summary: By optimizing the concentration of acetone additive, coagulation bath composition and evaporation time, the gas separation performance and application value of the Kapton membrane can be enhanced.
REACTIVE & FUNCTIONAL POLYMERS
(2023)
Article
Polymer Science
Yan-Lin Su, Konstantinos G. Beltsios, Jenn Fang Su, Liao-Ping Cheng
Summary: Poly(vinyl alcohol-co-ethylene) (EVOH) hollow fiber membranes were prepared using isothermal dry-jet wet spinning. The membranes exhibited asymmetric structures with macrovoids and interconnected cellular pores. Nanopores formed on the external surface only when the dope contained polyvinylpyrrolidone (PVP). The membranes showed attractive ultrafiltration features with high rejection rates for blue dextran molecules (2000 kDa).
Article
Materials Science, Multidisciplinary
Fatma Seden Tekin, P. Zeynep Culfaz-Emecen
Summary: The effects of three different solvent systems on the preparation of cellulose acetate membranes by phase inversion were investigated. Acetone as cosolvent resulted in an asymmetric membrane morphology, while acetic acid led to a loose, almost isotropic structure. The phase inversion rate was significantly lower when acetic acid was used as cosolvent, mainly due to its high viscosity.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Materials Science, Composites
Nai-Yi Huang, Cheng-Chien Wang, Chuh-Yung Chen
Summary: By synthesizing and characterizing nanocomposite membranes of ethylene vinyl acetate (EVA) and layered double hydroxide (LDH), it was found that 12AA-LDH has better adsorption performance for CO2 than neat LDH, enhancing membrane separation performance. Additionally, 12AA-LDH shows high potential for use as an additive in CO2 capture membranes.
POLYMER COMPOSITES
(2021)
Article
Engineering, Environmental
Lidia Martinez-Izquierdo, Magdalena Malankowska, Carlos Tellez, Joaquin Coronas
Summary: Thin film composite membranes of poly(ether-block-amide) copolymer Pebax (R) 3533 were prepared on asymmetric polysulfone supports for the first time using a phase inversion method. By varying the casting solution concentrations and number of layers, membranes with selective skin layers of different thicknesses and gas separation performances were obtained. Lower viscosity of casting solutions resulted in more defective skin layers, requiring a higher number of layers for selective membranes. The best separation performance was achieved with 0.5 wt% casting solution membranes after the deposition of four polymer layers, showing higher CO2 permeance and selectivity compared to the corresponding dense membrane.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Engineering, Multidisciplinary
Bin Zhu, Shanshan He, Yadong Wu, Songwei Li, Lu Shao
Summary: Membrane technology is considered a promising strategy for carbon capture, and this study presents a facile synthesis protocol to enhance the performance of the membrane material through in situ polymerization of polyethylene glycol. The improved membrane exhibits higher toughness and gas separation properties.
Article
Chemistry, Physical
Haoyang Sun, Pengyuan Qiu, Yunxin Yang, Junxiao Liu, Libin Zhang, Zhen Liu
Summary: This study investigates the surface structure of bimetallic Pd/Au catalyst and the role of potassium acetate in the synthesis of vinyl acetate (VAc). By constructing different configurations of the Pd/Au (1 1 1) surface and using density functional theory, the research reveals that the presence of potassium ion enhances VAc formation. The configuration of Pd/Au (1 1 1) with two adjacent palladium atoms embedded on the gold surface shows the most favorable outcome for VAc synthesis.
APPLIED SURFACE SCIENCE
(2022)
Article
Agricultural Engineering
Junkang Lin, Chenglong Fu, Wenchao Zeng, Dong Wang, Fang Huang, Shan Lin, Shilin Cao, Lihui Chen, Yonghao Ni, Liulian Huang
Summary: This study developed a simple strategy to fabricate cellulose acetate ultrafiltration membranes by adding methyl acetate (MAC) to N, N-dimethylacetamide (DMAc), aiming to improve their performance. The results showed that adjusting the DMAc to MAC ratio could regulate the pore morphologies of the membrane. Under optimal conditions, the pure water flux reached 188.0 L/m2h, with a BSA rejection ratio 20% higher than the control. Moreover, the anti-fouling and long-term stability of the ultrafiltration membranes were significantly improved.
INDUSTRIAL CROPS AND PRODUCTS
(2023)
Article
Polymer Science
Qinghong Zhang, Gongliang Wang, Xinlong Wen, Martin Hoch, Jie Mao, Xinyan Shi
Summary: In this study, APTES was used as a crosslinking monomer to graft onto the modified polymer EVM, forming Si-O-Si networks through moisture crosslinking, which increased the modulus and tensile strength of the samples.
Article
Engineering, Environmental
Muhammad Yaseen, Maria, Muhammad Usman Farooq, Waqas Ahmad, Fazle Subhan
Summary: A ternary system mixed matrix membrane based on PVAc, rGO, and CuO or Ag2O nanoparticles was fabricated and showed high efficiency in removing Cr6+ from model and real industrial wastewater. The PVAc/rGO/CuO membrane demonstrated superior performance and potential applications for pollutant remediation.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Thermodynamics
Yu Jia, Jun Zhang
Summary: In this study, the thermal conductivity of a series of EVA samples with different VAc contents at different temperatures was measured by the transient hot line method. A empirical formula between the thermal conductivity, temperature, and crystallinity of EVA was established, and the theoretical calculation based on this formula showed a good agreement with the experimental results within a 5% error. This empirical formula provides guidance for predicting the thermal conductivity of EVA samples with different VAc contents at different temperatures in the future.
THERMOCHIMICA ACTA
(2022)
Article
Chemistry, Multidisciplinary
Yue Gu, Linhua Jiang, Weizhun Jin, Zhenhua Wei, Xing Liu, Mingzhi Guo, Kailun Xia, Lei Chen
Summary: This paper investigates the thermal properties and characteristics of a new series of phase change materials composed of capric acid/ethylene-vinyl acetate/graphene. Experimental results show that adding an appropriate amount of graphene can improve the thermal conductivity and latent heat of the composite phase change materials, while excessive graphene can reduce the latent heat.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2021)
Article
Chemistry, Physical
Agata Niemczyk, Agnieszka Piegat, Simona Brajnicov, Veronica Satulu, Anca Bonciu, Justyna S. Slowik, Jolanta Baranowska, Bogdana Mitu, Maria Dinescu
Summary: A new approach was developed for the preparation of poly(ethylene-co-vinyl acetate) (EVA) coatings using a Modified Atmospheric Pressure Laser Enhanced Deposition (MAPLE) technique. By adding acetone as a non-solvent to the EVA-chloroform solution, the deposition efficiency was significantly increased compared to traditional methods. The resulting coatings exhibited modified surface morphology and high preservation of chemical structure. This approach can be applied to various oligomeric and polymeric materials to enhance deposition efficiency, making it a crucial step in scaling-up the MAPLE process.
APPLIED SURFACE SCIENCE
(2023)
Article
Engineering, Chemical
Bharat Nayak, Priya Tanvidkar, Bhanu Vardhan Reddy Kuncharam
Summary: Membrane-based CO2 separation is crucial for various applications, and blending polymer membranes is an emerging approach for altering gas transport. This study investigates the fabrication and characterization of CA and PI blend membranes, and compares their performance with CA-based membranes.
POLYMER ENGINEERING AND SCIENCE
(2023)
Article
Biochemistry & Molecular Biology
Evgenia Dmitrieva, Evgenia Grushevenko, Daria Razlataya, George Golubev, Tatiana Rokhmanka, Tatyana Anokhina, Stepan Bazhenov
Summary: This study proposes the creation of a hollow fiber composite membrane with a selective layer of silver alginate for the first time. The approach of obtaining silver alginate is presented and its sorption and transport properties are studied. The membrane shows high selectivity for the ethylene/ethane mixture and demonstrates potential for olefin/paraffin separation.
Article
Polymer Science
Morteza Sadeghi, Ali Pournaghshband Isfahani, Ahmad Arabi Shamsabadi, Sahar Favakeh, Masoud Soroush
JOURNAL OF APPLIED POLYMER SCIENCE
(2020)
Article
Polymer Science
Mehrzad Arjmandi, Mahdi Pourafshari Chenar, Majid Peyravi, Mohsen Jahanshahi
JOURNAL OF APPLIED POLYMER SCIENCE
(2020)
Article
Polymer Science
Hamid Reza Afshoun, Mahdi Pourafshari Chenar, Mohammad Reza Moradi, Ahmad Fauzi Ismail, Takeshi Matsuura
JOURNAL OF APPLIED POLYMER SCIENCE
(2020)
Article
Polymer Science
Saeid Maghami, Morteza Sadeghi, Milad Khoshkam, Mahdi Pourafshari Chenar
JOURNAL OF APPLIED POLYMER SCIENCE
(2020)
Article
Engineering, Chemical
Zohreh Raeisi, Ahmad Moheb, Mohadeseh Najafi Arani, Morteza Sadeghi
Summary: The study investigated the pervaporation dehydration of aqueous azeotrope isopropanol mixture using PVA / modified carbon nanotubes mixed matrix membranes. Modified CNTs wrapped with different amounts of PSSA or PVP showed improved separation performance. PVP-wrapped CNTs enhanced the thermal and mechanical properties of the membranes.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2021)
Article
Polymer Science
Farzaneh Alibakhshian, Mahdi Pourafshari Chenar, Morteza Asghari, Mohammad Reza Moradi
Summary: Layer by layer thin film nanocomposite membranes were prepared using carbon nanotubes and interfacial polymerization, showing improved separation factor and permeation flux by adding CNT into the PA layer. The study suggests that LbL TFN membranes could be the next generation of high-performance PV membranes.
JOURNAL OF POLYMER RESEARCH
(2021)
Article
Engineering, Chemical
Saeid Maghami, Morteza Sadeghi, Samaneh Baghersad, Beatriz Zornoza
Summary: A series of PSF membranes were prepared using different solvents, and the influence of propionic acid on gas separation properties was explored. Incorporating propionic acid and gamma-alumina nanoparticles into the PSF matrix can significantly improve gas separation performance.
POLYMER ENGINEERING AND SCIENCE
(2021)
Article
Chemistry, Applied
Majid Soleimani, Ehsan Bagheri, Peiman Mosaddegh, Tina Rabiee, Afsaneh Fakhar, Morteza Sadeghi
Summary: The study focused on preparing stable waterborne epoxy emulsions and investigating the impact of silica nanoparticles on their properties. The addition of non-ionic emulsifier and acrylate terpolymer latex improved the stability of the emulsions, while the proper amount of silica nanoparticles enhanced properties such as adhesion strength, wear resistance, corrosion resistance, and contact angle.
PROGRESS IN ORGANIC COATINGS
(2021)
Article
Energy & Fuels
Afsaneh Fakhar, Morteza Sadeghi, Mohammad Dinari, Rob Lammertink
Summary: The present study investigated the use of poly(urethane urea)s membranes with aromatic and aliphatic side chains of different sizes for the separation of higher hydrocarbons from methane. The results indicated that the membranes with bulkier or longer side chains exhibited enhanced phase separation, lower glass transition temperature, and higher gas permeability. The fractional free volume (FFV) was found to be a significant factor in controlling gas separation, and its trend reversed when the size of side chains increased. The membranes with the longest side chain achieved the highest permeability and selectivity.
JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING
(2022)
Article
Polymer Science
Evgenia Grushevenko, Alexey Balynin, Ruslan Ashimov, Stepan Sokolov, Sergey Legkov, Galina Bondarenko, Ilya Borisov, Morteza Sadeghi, Stepan Bazhenov, Alexey Volkov
Summary: This study aims to develop new hydrophobic composite membranes with active ethylene carriers for ethylene/ethane separation in gas-liquid membrane contactors. By adding silver nanoparticles to the POMS matrix, the efficiency of ethylene mass transfer can be significantly improved, and the selectivity of ethylene/ethane can be enhanced.
Article
Green & Sustainable Science & Technology
Shiva Zolfaghari, Seyed Sajad Hashemi, Keikhosro Karimi, Morteza Sadeghi
Summary: This study addressed the environmental issues caused by non-degradable packaging and cheese whey by valorizing cheese whey to cleaner products, such as fungal chitosan, biomethane, and biopolymer-based films. The results showed that the obtained fungal chitosan had good compatibility with wheat starch, and the blend film with 6% chitosan had the least water swelling index and oxygen permeability. The anaerobic digestion of the whey effluent produced biomethane with a high yield. Overall, this clean approach has the potential to produce sustainable packaging, generate green energy, and reduce plastic pollution.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Chemistry, Physical
Ali Pournaghshband Isfahani, Morteza Sadeghi, Somaye Nilouyal, Guoji Huang, Ansori Muchtar, Masateru M. Ito, Daisuke Yamaguchi, Easan Sivaniah, Behnam Ghalei
JOURNAL OF MATERIALS CHEMISTRY A
(2020)
Article
Engineering, Environmental
Mehrzad Arjmandi, Majid Peyravi, Mahdi Pourafshari Chenar, Mohsen Jahanshahi
ENVIRONMENTAL SCIENCE-WATER RESEARCH & TECHNOLOGY
(2019)
Article
Engineering, Chemical
Shahram T. Iranizadeh, M. Pourafshari Chenar, Mahdieh N. Mahboub, Hamed A. Namaghi
BRAZILIAN JOURNAL OF CHEMICAL ENGINEERING
(2019)
Article
Engineering, Chemical
Samaneh Soloukipour, Seyed Mahmoud Mousavi, Ehsan Saljoughi, Mandi Pourafshari Chenar
DESALINATION AND WATER TREATMENT
(2019)
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)
