Article
Engineering, Environmental
Yanjie Xu, Tao Wang, Qi Yang, Hai Yu, Mengxiang Fang, Graeme Puxty
Summary: A range of water-lean solutions blended from diamines, organic solvent diluents, and water were examined to reduce energy penalties. Some diamines were found to remain homogenous during CO2 uptake, showing low viscosity and rapid absorption and desorption rates.
CHEMICAL ENGINEERING JOURNAL
(2021)
Review
Engineering, Chemical
Ricardo R. Wanderley, Diego D. D. Pinto, Hanna K. Knuutila
Summary: Research on developing water-lean solvents for CO2 capture is abundant, but often lacks contextualization with previous work. The multitude of options for solvent formulation makes comprehensive analysis challenging. Categorizing and discussing past literature on water-lean solvents is crucial for understanding and advancing research in the field.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Energy & Fuels
Xianhang Jin, Enze Ren, Yun Yang
Summary: Recent research has shown that nonaqueous absorbents for CO2 capture have become the focus in research institutes for their advantages such as energy efficiency and noncorrosiveness. The polarity parameter and dielectric constant of solvents mainly affect the phase separation behavior and CO2 solubility of nonaqueous absorbents. Additionally, nonaqueous absorbents with ethylene glycol monoethyl ether as solvent show optimal CO2 cyclic capacity and heat of CO2 absorption.
Article
Green & Sustainable Science & Technology
Jak Tanthana, Paul Mobley, Aravind Rayer, Vijay Gupta, Mustapha Soukri, Marty Lail
Summary: This work focuses on demonstrating the energetic performance and operational reliability in a continuous system of RTI's water-lean solvents for post-combustion CO2 capture applications. NAS-1A shows stable operation with 90% CO2 capture efficiency and 15% lower energy input for regeneration compared to MEA, while NAS-1B exhibits even higher efficiency with 25% less energy input for 90% CO2 capture.
INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL
(2021)
Article
Energy & Fuels
Bita Karami, Ahad Ghaemi, Shahrokh Shahhosseini
Summary: In this study, a novel hybrid solvent based on DESs was developed for CO2 separation. Different DESs added to DEA solution showed varying CO2 absorption performance and mass transfer characteristics. Hydrodynamic studies revealed a decrease in bubble size with the addition of DES, and partial replacement of water resulted in improved CO2 capture efficiency.
Article
Energy & Fuels
Chunyan Ma, Nan Wang, Nannan Ye, Xiaoyan Ji
Summary: The study compared the CO2 absorption capacity of three hybrid solvents based on [Bmim][OAc] and different cosolvents, with [Bmim][OAc]-DEPG250 showing the highest absorption capacity. The addition of DEPG250 significantly reduced the viscosity while maintaining comparable absorption capacity. Additionally, using [Bmim][OAc]-DEPG250 as a solvent resulted in a lower CO2 capture cost compared to aqueous amine solutions due to reduced utility costs.
Review
Biochemistry & Molecular Biology
Iwona Cichowska-Kopczynska, Bartosz Nowosielski, Dorota Warminska
Summary: Nowadays, researchers are striving to find a solution to the problem of global warming, with a focus on reducing carbon dioxide emissions. The use of alkanolamines for carbon dioxide capture is problematic due to its corrosive nature, volatility, and high energy demand. Deep eutectic solvents (DESs) have emerged as a potential alternative, capable of physically and chemically absorbing carbon dioxide. Different strategies, such as the addition of water or co-solvents, have been proposed to enhance CO2 absorption using DESs. This review presents an overview of DESs, their impact on CO2 absorption, and practical considerations for their use in CO2 separation.
Article
Engineering, Chemical
Xiankun Wu, Ning-Ning Cheng, Haijiao Jiang, Wen-Tao Zheng, Yang Chen, Kuan Huang, Fujian Liu
Summary: The research investigated the use of [Emim]Cl + imidazole deep eutectic solvents as physical solvents for H2S and CO2 absorption, showing significantly higher solubility of H2S compared to CO2 in the deep eutectic solvents, leading to efficient H2S absorption and selective separation from CO2.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Engineering, Chemical
Qinghai Long, Shuo Wang, Shufeng Shen
Summary: This study proposes a novel water-lean solvent for energy-saving postcombustion CO2 capture, comprising ethylene glycol monohexyl ether (EGHE) and secondary alkanolamines. The solvent exhibits spontaneous phase-separation, allowing excess water from wet flue gas to be discharged. The water content in the absorbents is found to have a significant impact on CO2 capture performance, particularly on regeneration energy consumption. Compared to aqueous MEA, the water-lean absorbents with 10% H2O can reduce the regeneration heat duty by about 40%, demonstrating their practical competitiveness.
CHEMICAL ENGINEERING SCIENCE
(2023)
Article
Thermodynamics
Rujie Wang, Shanshan Liu, Qiangwei Li, Shihan Zhang, Lidong Wang, Shanlong An
Summary: Blended amine solvents, comprising N,N-dimethylcyclohexylamine (DMCA) and N-methylcyclohexyamine (MCA), showed rapid absorption rate, large CO2 capacity, and efficient regeneration for CO2 capture. The total mass transfer coefficient of CO2 in DMCA-MCA was higher than that of 5 M MEA, and the total regeneration energy of DMCA-MCA blend was significantly lower than 5 M MEA. This novel solvent could be a potential alternative for CO2 capture.
Article
Green & Sustainable Science & Technology
Vijay Gupta, Paul Mobley, Jak Tanthana, Lucas Cody, David Barbee, Jacob Lee, Roger Pope, Ryan Chartier, Jonathan Thornburg, Marty Lail
Summary: Advanced water-lean solvents for post-combustion CO2 capture have shown potential in reducing energy use for solvent regeneration. However, the presence of aerosols in the flue gas can significantly increase amine emissions, which can be predicted using PCA and PLS models.
INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL
(2021)
Article
Chemistry, Multidisciplinary
Eric D. Walter, Difan Zhang, Ying Chen, Kee Sung Han, J. David Bazak, Sarah Burton, Kathryn O'Harra, David W. Hoyt, Jason E. Bara, Deepika Malhotra, Sarah I. Allec, Vassiliki-Alexandra Glezakou, David J. Heldebrant, Roger Rousseau
Summary: Efficient direct air capture (DAC) of CO2 can be achieved by using a combination of a CO2-selective membrane and a CO2 capture solvent. The interaction between a water-lean carbon-capture solvent, a PEEK-ionene membrane, and CO2 was studied using advanced NMR techniques and simulations. It was found that the solvent provides a thermodynamic and kinetic pathway for CO2 to be drawn through the membrane, enhancing its performance. The reaction between the solvent and CO2 also creates structural changes that facilitate faster CO2 diffusion at the interface.
Article
Chemistry, Multidisciplinary
Qammer Zaib, Matthew J. Eckelman, Yi Yang, Daeseung Kyung
Summary: This study evaluates the potential environmental impacts of a representative choline chloride (ChCl)/urea deep eutectic solvent (DES) called reline, using life-cycle assessment (LCA). The results show that reline has lower environmental impacts compared to certain organic solvents, but higher impacts compared to methanol and ethanol. The chemical constituent materials used in the synthesis of reline DES contribute significantly to its life-cycle environmental impacts. Additionally, LCA is performed on four other ChCl-based DESs, with ChCl/citric acid DES showing the highest environmental impacts.
Article
Multidisciplinary Sciences
Hossam K. Abdrabou, Inas AlNashef, Mohammad Abu Zahra, Salim Mokraoui, Emad Ali, Mohamed K. Hadj-Kali
Summary: This study investigates the effect of using water as a low-viscosity component in ternary amine-based deep eutectic solvents (DESs) on their physicochemical properties, thermal stability, and CO2 absorption capacity. The results show that adding small amounts of water can significantly decrease the viscosity of DESs while maintaining high CO2 absorption capacity and thermal stability.
Article
Green & Sustainable Science & Technology
Vanja Buvik, Ida M. Bernhardsen, Roberta Figueiredo, Solrun J. Vevelstad, Earl Goetheer, Peter van Os, Hanna K. Knuutila
Summary: This study aims to understand the oxygen solubility in pure and aqueous amine solvents and evaluate the use of dissolved oxygen sensors for measuring oxygen concentrations. The study shows that different types of amines and concentrations in water have minor variations in oxygen solubility, but in CO2-loaded amine solutions, the sensors may give higher measured concentrations due to increased conductivity. Additionally, in ethanolamine, the consumption of oxygen is faster than mass transfer, leading to lower concentrations of oxygen than expected.
INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL
(2021)
Article
Energy & Fuels
Usman Shoukat, Hanna Katariina Knuutila
Article
Engineering, Chemical
Ricardo R. Wanderley, Hanna K. Knuutila
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2020)
Article
Energy & Fuels
Ricardo R. Wanderley, Gonzalo J. C. Ponce, Hanna K. Knuutila
Article
Thermodynamics
Noura Dawass, Ricardo R. Wanderley, Mahinder Ramdin, Othonas A. Moultos, Hanna K. Knuutila, Thijs J. H. Vlugt
Summary: Experimental measurements and Monte Carlo simulations were used in this study to investigate the solubility of CO2 in MEG, showing good agreement at low pressures but deviations at high pressures. The order of solubility of gases in MEG at 373.15 K was determined, with the potential need for force field modifications to improve predictions under high pressure and low temperature conditions.
JOURNAL OF CHEMICAL AND ENGINEERING DATA
(2021)
Review
Green & Sustainable Science & Technology
Vanja Buvik, Karen K. Hoisaeter, Sorun J. Vevelstad, Hanna K. Knuutila
Summary: The review summarizes the lessons learned from different pilot campaigns, emphasizing the importance of flue gas pretreatment in enhancing solvent stability, and highlights the lack of a single degradation compound for the assessment of solvent degradation.
INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL
(2021)
Article
Engineering, Chemical
Vanja Buvik, Solrun J. Vevelstad, Odd G. Brakstad, Hanna K. Knuutila
Summary: Steric effects play a significant role in the stability of amines under oxidative conditions, with tertiary amines being generally stable. There is a correlation between biodegradability and oxidative degradability, but exceptions like DMAPA and DMMEA exist. No direct correlations between oxidative stability and ecotoxicity or thermal stability are observed.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2021)
Article
Green & Sustainable Science & Technology
H. F. Svendsen, H. Majeed, H. K. Knuutila, M. Hillestad, S. Evjen, T. Mejdell, A. Einbu, K. W. Hjarbo, G. Haugen, K. A. Hoff
Summary: A new aerosol model was developed and tested, extending an equilibrium model for MEA to cover sulphuric acid droplets. Droplet number concentration has a small effect on emissions, while an increase in initial sulphuric acid concentration significantly raises MEA emissions. The log-normal model fails to capture small inlet droplet sizes, which have a negligible impact on emissions in total.
INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL
(2021)
Article
Green & Sustainable Science & Technology
Ricardo R. Wanderley, Karen K. Hoisaeter, Hanna K. Knuutila
Summary: The study categorizes solvents for CO2 capture into two reaction pathways, carbamate and bicarbonate formation, and proposes a method to evaluate alkylcarbonate-forming water-lean solvents based on the basicity of amines and the autoprotolysis constant of diluents.
INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL
(2021)
Article
Engineering, Chemical
Lucas Braakhuis, Karen Karolina Hoisaeter, Hanna K. Knuutila
Summary: A kinetic model has been developed to predict the thermal degradation of aqueous solutions of monoethanolamine (MEA) in carbon capture. The model takes into account the degradation rate of the amine and the formation rates of selected degradation products, considering the factors of time, temperature, and loading. The model was evaluated using experimental data and found to have an average relative deviation of 17.5%, primarily due to uncertainty in the experimental data. The model successfully predicts the concentration of the thermal degradation product HEIA, but also acknowledges the interaction between oxidative and thermal degradation mechanisms and their influence on the concentration of various degradation products.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Thermodynamics
Ardi Hartono, Christina Nokleby, Inna Kim, Hanna K. Knuutila
Summary: This study presents equilibrium data for two amines and their aqueous solutions, with calculations and fits using the UNIQUAC model and Antoine equation. The results show that the vapor pressure of 1-(2-hydroxyethyl)pyrrolidine is higher than that of 2-piperidineethanol in the aqueous solution. The developed UNIQUAC model represents the data well.
JOURNAL OF CHEMICAL AND ENGINEERING DATA
(2022)
Article
Engineering, Chemical
Karen K. Hoisaeter, Solrun J. Vevelstad, Lucas Braakhuis, Hanna K. Knuutila
Summary: Water-lean solvents are proposed as an alternative to aqueous amine systems for postcombustion carbon capture, but there is limited data on the effects of solvents on amine degradation. This study presents new insights on the thermal degradation of alkanolamines in different solvents. Replacing water with organic diluents resulted in varying degradation rates for loaded monoethanolamine (MEA). The study found that no single parameter, such as acid-base behavior or polarity, stood out as the sole contributing factor for the variation in degradation rates.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Review
Engineering, Chemical
Solrun Johanne Vevelstad, Vanja Buvik, Hanna K. Knuutila, Andreas Grimstvedt, Eirik Falck da Silva
Summary: The chemical stability of aqueous amines is crucial to reduce risks related to operation, cost and environment. Current research on amine degradation lacks standardized methods and understanding of which components to search for. This work provides an overview of the current status of amine degradation research and recommendations for further study.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Engineering, Chemical
Solrun Johanne Vevelstad, Andreas Grimstvedt, Maxime Francois, Hanna K. Knuutila, Geir Haugen, Merete Wiig, Kai Vernstad
Summary: This study investigates the chemical stability of a blend of amine solvents under various conditions such as temperature, oxygen concentration, and additives, revealing differing stability levels of the blend based on these factors.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Green & Sustainable Science & Technology
Matteo Gilardi, Filippo Bisotti, Andrew Tobiesen, Hanna K. Knuutila, Davide Bonalumi
Summary: Carbon Capture and Storage (CCS) using chemical absorption is an effective method for reducing CO2 emissions in industries and energy sectors, but improved absorbents are needed to enhance the efficiency and reduce the costs. This article provides a detailed guide on developing, regressing, and validating a VLE model using ELECNRTL in Aspen Plus V11 for a novel HS3 solvent. The proposed procedure for regressing ELECNRTL parameters can be applied to VLE models of amine blends or electrolyte solutions in Aspen Plus.
INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL
(2023)
Article
Thermodynamics
Ardi Hartono, Hanna K. Knuutila
Summary: This study reports the densities and viscosities of pure 1-(2-hydroxyethyl) pyrrolidine, 3amino-1-propanol, water, and their blends at various temperatures. It is found that the density of pure water is higher than that of 3amino-1-propanol and 1-(2-hydroxyethyl) pyrrolidine, while pure 3A1P has higher viscosity compared to 1-(2-hydroxyethyl) pyrrolidine and water. The excess molar volumes and viscosity deviations are analyzed using the Redlich-Kister equation, providing insights into the intermolecular interactions between the molecules.
JOURNAL OF CHEMICAL AND ENGINEERING DATA
(2023)
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)
