Article
Engineering, Environmental
Elena Surra, Rui P. P. L. Ribeiro, Tiago Santos, Maria Bernardo, Jose P. B. Mota, Nuno Lapa, Isabel A. A. C. Esteves
Summary: This study investigates the use of activated carbon materials derived from CO2 activation of Maize Cob Waste (MCW) as adsorbents for biogas upgrading. The carbon resulting from 3 hours of activation (MCW(PA)3 h) demonstrates better properties and selectivity towards CO2 compared to the one resulting from 2 hours of activation (MCW(PA)2 h). It shows higher CO2 uptake in the typical partial pressure range for biogas upgrading units and demonstrates good agreement between experimental results and the prediction using the axial dispersed plug-flow and Linear Driving Force (LDF) approximation for mass transfer modeling. This work lays the foundation for future modeling of a Pressure Swing Adsorption (PSA) cycle using MCW(PA)3 h as an adsorbent material and highlights the potential of this novel material for biogas upgrading processes.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Chemistry, Physical
Orlando F. Cruz Jr, Ignacio Campello Gomez, Manuel Martinez Escandell, Carlos R. Rambo, Joaquin Silvestre-Albero
Summary: Activated carbon-based molecular sieves show excellent performance in separation processes of CO2/CH4 mixtures, indicating potential industrial applications.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Review
Chemistry, Multidisciplinary
Rupam Sahoo, Supriya Mondal, Debolina Mukherjee, Madhab C. Das
Summary: Efforts have been made to separate CO2 from flue gas and biogas using nonthermal-based separations, such as adsorption-based or membrane-separation technology employing metal-organic frameworks (MOFs). This review summarizes the strategies, performance parameters, and molecular-level mechanisms of such separations, and offers critical insights and future recommendations for further development of MOF materials as flue and biogas separators.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Applied
Ismahene Ben Khemis, Fatma Aouaini, Lamies Bukhari, Samia Nasr, Abdelmottaleb Ben Lamine
Summary: An advanced monolayer adsorption model was used to study the adsorption of four vanilla odorants on a mouse eugenol olfactory receptor. The results showed that the odorants were adsorbed in a non-parallel orientation and the adsorption process was multimolecular. The adsorption energy values suggested that the odorants were physisorbed and the adsorption mechanism was exothermic. The estimated parameters can be used to quantify the interactions between the odorants and the olfactory receptor.
Article
Engineering, Chemical
Brieuc Verougstraete, Matthias Schoukens, Ben Sutens, Ninon Vanden Haute, Yoran De Vos, Marleen Rombouts, Joeri F. M. Denayer
Summary: This study demonstrates the use of an electrically conductive activated carbon monolith for biogas upgrading. The results show that increasing the voltage, using a higher purge flow rate for a shorter time, and adding a rinse step can improve the purity and regeneration efficiency.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Environmental
Pratiksha Joshi, Sweta Mehta, Narendra Singh, Suman Dalakoti, Swapnil Divekar, Soumen Dasgupta, Manoj Srivastava, Om P. Khatri
Summary: This study presents a facile hydrothermal approach to prepare activated carbons using pomelo peels impregnated with K2CO3 and K2C2O4. The activated carbons, PKC and PKOX, exhibit high CO2 sorption capacity due to their high surface area, microporosity, nitrogen-based functionalities, and turbostratic structural features. The adsorption selectivity of PKC and PKOX is significantly higher than commercial activated carbon, indicating their potential for biogas upgradation and the capture of greenhouse gases.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Environmental Sciences
Junzhi Zhang, Fan Lu, Xiao He, Yu Liao, Rumeng Chen, Rongjun Xia, Yuchen Shang, Qi Wang, Jianwei Yu
Summary: Powdered activated carbon (PAC) adsorption is an efficient method for removing odorants from drinking water, but the presence of algal organic matter (AOM) produced by cyanobacteria hinders the adsorption of odorous compounds. This study investigates the adsorption characteristics of three odorants by PAC and the effects of AOM on PAC adsorption. The results show that AOM affects the adsorption of odorants to varying degrees, and odorants with higher and more uniformly distributed electrostatic potentials have a stronger affinity for PAC adsorption and are less susceptible to disruption caused by AOM.
ENVIRONMENTAL RESEARCH
(2023)
Article
Chemistry, Physical
Tiago Sinigaglia, Vinicius Bernardes Pedrozo, Fernando Fusco Rovai, Roger Tadeu Gondim Guilherme, Thompson Diordinis Metzka Lanzanova, Mario Eduardo Santos Martins
Summary: This research evaluates critical issues related to the expansion of natural gas and biomethane businesses in Brazil. The study shows that the competitiveness of biomethane as a vehicular fuel is limited by the additional costs of its upgrading process, while the usage of natural gas is hindered by Brazil's production and transport monopoly.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Materials Science, Multidisciplinary
Fuqiang Chen, Kaiqing Guo, Xinlei Huang, Zhiguo Zhang, Qiwei Yang, Yiwen Yang, Qilong Ren, Zongbi Bao
Summary: In this study, a series of ultramicroporous carbon adsorbents with relatively uniform pore size were fabricated using activator-free pyrolysis. These adsorbents exhibited record-high separation selectivity and adsorption capacity, showing great potential for application.
SCIENCE CHINA-MATERIALS
(2023)
Article
Chemistry, Physical
E. M. Strizhenov, A. Shkolin, S. S. Chugaev, I. E. Men'shchikov, O. Solovtsova, A. A. Shiryaev, M. S. Nickolsky
Summary: This paper investigates the properties and potential applications of wood-based activated carbon in adsorbed natural gas (ANG) storage. Using graphical methods and calculations, the study explores various types of ANG storage charging processes, their capacities, and thermodynamic properties. Recommendations are provided for the design of ANG storage facilities based on the charging type.
ADSORPTION-JOURNAL OF THE INTERNATIONAL ADSORPTION SOCIETY
(2023)
Article
Engineering, Environmental
Fabrizio Rainone, Ottavia D'Agostino, Alessandro Erto, Marco Balsamo, Amedeo Lancia
Summary: Biomethane production through biogas upgrading using commercial carbonaceous adsorbents was experimentally investigated in this study. It was found that activated carbon (AC) exhibited higher adsorption capacity and better kinetic performance, while carbon molecular sieves (CMSs) showed higher selectivity for CO2/CH4 separation and faster kinetics, with Xintao sample showing the best overall performance. Modeling of breakthrough curves indicated intraparticle diffusion as the rate-limiting step for CO2 adsorption.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Engineering, Chemical
Mariana C. N. Bessa, Azahara Luna-Triguero, Jose M. Vicent-Luna, Paulo M. O. C. Carmo, Mihalis N. Tsampas, Ana Mafalda Ribeiro, Aliirio E. Rodrigues, Sofia Calero, Alexandre F. P. Ferreira
Summary: Two industrial dual-step pressure swing adsorption (PSA) processes were designed and simulated to obtain high-purity methane, CO2, and syngas from a gas effluent of a CO2 electroreduction reactor using different design configurations. NaX and MFI zeolites were selected from the investigated set for simulation. Case study 1 achieved 90.5% methane purity with a 95.2% recovery, whereas case study 2 obtained methane with a 97.5% purity and 95.3% recovery. Both case studies produced high-purity CO2 (>97%) and syngas with a H-2/CO ratio above 4. However, case study 2 had a significantly higher energy consumption compared to case study 1 (64.9 vs 29.8 W h mol(CH4) (-1)).
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Engineering, Environmental
Cheng-Tong Wang, Wen-Cui Li, Shuang Xu, Ru-Shuai Liu, Guang-Ping Hao, An-Hui Lu
Summary: This study reports a wood frame structured carbon adsorbent with an integrated sieving layer, prepared from natural woods. The adsorbent exhibits excellent propylene/propane separation performance.
CHEMICAL ENGINEERING JOURNAL
(2023)
Review
Engineering, Chemical
Soheil Bahraminia, Mansoor Anbia, Esmat Koohsaryan
Summary: This paper provides an overview of the issues caused by water vapor in natural gas and biogas, highlighting the importance of dehydration methods and adsorption dehydration techniques. Additionally, it discusses the types of solid desiccants and their improvements.
FRONTIERS OF CHEMICAL SCIENCE AND ENGINEERING
(2021)
Article
Materials Science, Multidisciplinary
Dipendu Saha, Marisa Comroe, Rajamani Krishna, Margaret Rascavage, Joel Larwa, Victor You, Griffin Standhart, Brandon Bingnear
Summary: By hydrothermally treating lignin and synthesizing Ag(I) functionalized microporous carbons, high surface areas and selectivity were obtained for separating C3H6, showing potential for industrial applications.
DIAMOND AND RELATED MATERIALS
(2022)
Article
Agronomy
Marta S. Lopes
Summary: This study reveals that there has been positive progress in the yields of wheat, barley, rice, and maize in Europe in recent years. However, certain regions in Western Europe, Southern Europe, and Northern Europe have experienced stagnant yield progress. Temperature changes have shown some correlation with yield, but the relationship between rainfall and yield is not clear. In order to maximize the yields of wheat, barley, and maize in Europe, it is important to conduct thorough regional testing on genetic adaptation, increased crop cycle duration, drought tolerance, sowing dates, smart irrigation, and sustainable practices.
FOOD AND ENERGY SECURITY
(2022)
Article
Engineering, Chemical
Tiago J. Ferreira, Laura M. Esteves, Jose M. S. S. Esperanca, Isabel A. A. C. Esteves
Summary: In this study, composite sorbent materials (IL@MOF) were fabricated using a metal-organic framework (MOF) ZIF-8 and [B(CN)(4)](-)-based ionic liquids (ILs). The experimental results showed that these materials exhibited good adsorption performance and similar pore properties compared to the pristine material. However, the addition of ILs decreased the selectivity of the composite.
Article
Food Science & Technology
Iwona Kowalska, Jaroslaw Moldoch, Sylwia Pawelec, Grazyna Podolska, Moritz von Cossel, Veerle Derycke, Geert Haesaert, Marcos A. Lana, Marta da Silva Lopes, Andrew B. Riche, Hartmut Stuetzel, Richie Hackett, Wieslaw Oleszek
Summary: This study investigated the content and activity of phenolic acids and alkylresorcinols in twelve winter wheat cultivars grown at eight European locations. It found significant differences in these substances between wheat cultivars and locations.
JOURNAL OF CEREAL SCIENCE
(2022)
Article
Engineering, Chemical
Florian Lukas Vetter, Steffen Zobel-Roos, Jose Paulo Barbosa Mota, Bernt Nilsson, Axel Schmidt, Jochen Strube
Summary: mRNA-based therapeutics have a promising future, but face challenges in manufacturing due to supply bottlenecks and shortage of skilled personnel. Automation and maximizing process throughput are key to addressing these issues. A quality-by-design process development approach with digital twins as process models can optimize parameters, increase productivity, and minimize resource consumption.
Article
Multidisciplinary Sciences
Julio E. Sosa, Carine Malheiro, Paulo J. Castro, Rui P. P. L. Ribeiro, Manuel M. Pineiro, Frederic Plantier, Jose P. B. Mota, Joao M. M. Araujo, Ana B. Pereiro
Summary: Research on porous materials for the selective capture of fluorinated gases is crucial for reducing their emissions. This study investigates the adsorption of three fluorinated gases in different materials and finds that MOF-177 exhibits the highest adsorption capacity. This suggests that MOFs are promising for developing new approaches for selectively capturing and separating fluorinated gases.
Article
Plant Sciences
Venkata Rami Reddy Yannam, Marta Lopes, Carlos Guzman, Jose Miguel Soriano
Summary: This study conducted a genome-wide association analysis using 170 landraces from 24 Mediterranean countries, and identified QTL hotspots related to wheat quality and agronomic traits, as well as candidate genes. The accuracies of genomic prediction were calculated using cross-validation, and five prediction equations were developed to predict bread loaf volume.
FRONTIERS IN PLANT SCIENCE
(2023)
Article
Plant Sciences
Adrian Gracia-Romero, Ruben Rufo, David Gomez-Candon, Jose Miguel Soriano, Joaquim Bellvert, Venkata Rami Reddy Yannam, Davide Gulino, Marta S. Lopes
Summary: The development of accurate multivariate models for grain yield (GY) prediction in wheat experimental trials using normalized difference vegetation index (NDVI) and additional agronomic traits is a promising option to replace laborious in-field evaluations. This study proposed improved GY prediction models by incorporating NDVI, plant height, phenology, and ear density from experimental trials. The best models included NDVI, days to heading, and ear density or plant height, which showed a significant increase in prediction accuracy and a decrease in root mean square error.
FRONTIERS IN PLANT SCIENCE
(2023)
Article
Green & Sustainable Science & Technology
Tiago J. Ferreira, Beatriz A. de Moura, Laura M. Esteves, Patricia M. Reis, Jose M. S. S. Esperanca, Isabel A. A. C. Esteves
Summary: This study investigates the impregnation of five ammonium-based ionic liquids (ILs) into the metal-organic framework (MOF) ZIF-8 for gas sorption applications. The produced IL@ZIF-8 composites are thermally stable and microporous. The acetate-based composites show high selectivity for CO2 adsorption.
SUSTAINABLE MATERIALS AND TECHNOLOGIES
(2023)
Article
Green & Sustainable Science & Technology
L. M. Esteves, T. J. Ferreira, A. Keba, J. M. S. S. Esperanca, I. A. A. C. Esteves
Summary: The sorption capacity and selectivity of pre-and post-carbonized cyano-based metal-organic framework (MOF) composite materials (cyano-based IL@ZIF-8) were investigated. The loading of ionic liquid (IL) did not significantly affect the gas uptake of the carbon materials, but had a notable impact on the selectivity of the composites. The number of cyano groups in the IL anion played a key role in determining the sorption capacity and selectivity of the materials.
MATERIALS TODAY SUSTAINABILITY
(2023)
Article
Plant Sciences
Karen Marti-Jerez, Mar Catala-Forner, Nuria Tomas, Gemma Murillo, Carlos Ortiz, Maria Jose Sanchez-Torres, Andrea Vitali, Marta S. Lopes
Summary: This study assessed the application of organic fertilizers and remote sensing in rice cultivation. The results showed that organic fertilizers reduced nitrogen loss but also decreased yield. Remote sensing effectively detected and managed nutrient deficiencies.
FRONTIERS IN PLANT SCIENCE
(2023)
Article
Plant Sciences
Davide Gulino, Roser Sayeras, Joan Serra, Josep Betbese, Jordi Doltra, Adrian Gracia-Romero, Marta S. Lopes
Summary: This study investigates the genetic yield progress of wheat varieties in Catalonia, Spain, from 2007 to 2021, and examines the relationship between genetic yield and climate-related factors, such as temperature. The findings highlight the urgent need to address the impact of climate change on wheat cultivation, and emphasize the importance of ongoing monitoring and adaptation in agricultural practices to ensure yield resilience in the context of a changing climate.
FRONTIERS IN PLANT SCIENCE
(2023)
Article
Plant Sciences
David Gomez-Candon, Joaquim Bellvert, Ana Pelecha, Marta S. Lopes
Summary: This study investigates critical aspects of water management and crop productivity in wheat cultivation, highlighting the importance of an integrated approach for predicting evapotranspiration and yield. The results suggest a threshold beyond which additional water application does not significantly enhance crop yield. Furthermore, genetic analysis reveals opportunities for selecting resource-efficient wheat varieties.
Article
Engineering, Environmental
Julio E. Sosa, Rui P. P. L. Ribeiro, Paulo J. Castro, Jose P. B. Mota, Ana B. Pereiro, Joao M. M. Araujo
Summary: The Kigali Amendment restricts the global use of F-gases and promotes the development of new refrigerants with lower global warming potential. This study investigates the potential of ionic liquids supported on silica as selective sorbents for F-gases, demonstrating the ability to finely tune selectivity.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Engineering, Environmental
Elena Surra, Rui P. P. L. Ribeiro, Tiago Santos, Maria Bernardo, Jose P. B. Mota, Nuno Lapa, Isabel A. A. C. Esteves
Summary: This study investigates the use of activated carbon materials derived from CO2 activation of Maize Cob Waste (MCW) as adsorbents for biogas upgrading. The carbon resulting from 3 hours of activation (MCW(PA)3 h) demonstrates better properties and selectivity towards CO2 compared to the one resulting from 2 hours of activation (MCW(PA)2 h). It shows higher CO2 uptake in the typical partial pressure range for biogas upgrading units and demonstrates good agreement between experimental results and the prediction using the axial dispersed plug-flow and Linear Driving Force (LDF) approximation for mass transfer modeling. This work lays the foundation for future modeling of a Pressure Swing Adsorption (PSA) cycle using MCW(PA)3 h as an adsorbent material and highlights the potential of this novel material for biogas upgrading processes.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
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)
