Article
Engineering, Chemical
Yuming Tu, Hui Yu, Wei He, Zhiyong Zhou, Wei Liu, Fan Zhang, Yixin Qu, Zhongqi Ren
Summary: This study presents a high-efficiency separation method for aromatics/alkanes using novel ionic liquid gel membranes, with optimal membrane preparation achieved through careful control of various parameters. The best flux and separation factor were observed at 25 degrees C, indicating the membrane's good stability even after continuous operation for 30 hours.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Engineering, Chemical
Jin Du, Shuwei Liang, Meidi Wang, Yuhan Wang, Tianpei Yi, Zhiming Zhang, Fusheng Pan, Zhongyi Jiang
Summary: Cu-TAPB-COF nanosheets were synthesized and introduced into Pebax®2533 matrix to construct facilitated transport membranes for toluene/n-heptane mixtures. The Cu-TAPB-COF nanosheets provided continuous low mass transfer resistance channels and uniformly distributed facilitated transport sites. The resulting membrane exhibited higher adsorption selectivity and lower swelling degree compared with pure Pebax membrane. It showed high pervaporation separation performance for the toluene/n-heptane mixture.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Biochemistry & Molecular Biology
Wendel Paulo Silvestre, Jocelei Duarte, Isabel Cristina Tessaro, Camila Baldasso
Summary: This study developed non-supported and PET-supported chitosan membranes and evaluated their physical-chemical, morphological, and mechanical properties, as well as their performance in separating ethanol/water and limonene/linalool mixtures. The presence of a PET layer enhanced the mechanical properties of the membrane, while the support layer influenced the hydrophilic pervaporation parameters. However, overall, both membranes had similar performance in terms of pervaporation separation index. Therefore, the choice of membrane depends on specific applications requiring durability, higher flux, and selectivity.
Article
Thermodynamics
Yuqi Su, Taotao Zhan, Xiangyang Liu, Maogang He, Ying Zhang
Summary: The mutual diffusion coefficients of two binary solutions were measured and the influences of temperature and composition were discussed. Semi-empirical correlations for mutual diffusion coefficients were obtained by fitting experimental results, with low average relative deviations.
JOURNAL OF CHEMICAL THERMODYNAMICS
(2021)
Article
Engineering, Chemical
Majid Pakizeh, Mahdi Karami, Sahar Kooshki, Rasoul Rahimnia
Summary: This study aimed to effectively separate toluene/n-heptane mixtures by preparing a cross-linked polyvinyl alcohol (PVA) membrane and incorporating graphene oxide (GO) into mixed matrix membranes (MMMs). The PVA membrane with a molecular weight of 130,000 showed a permeation flux of 24.8 g/m2h and a separation factor of 5.5. Increasing the GO loading enhanced the total flux, with the PVA-1.5GO sample exhibiting the best performance, with a permeation flux of 30.6 g/m2h and a separation factor of 11.9, leading to a 199% increase in the pervaporation separation index (PSI) compared to pure PVA membrane.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2023)
Article
Engineering, Chemical
Guanying Dong, Yatao Zhang, Xinchang Pang, Meng Guo, Norihiro Moriyama, Hiroki Nagasawa, Masakoto Kanezashi, Toshinori Tsuru
Summary: In this study, a facile and novel co-condensation strategy was proposed to achieve efficient pervaporation separation of aromatic/aliphatic mixtures using composite organosilica membranes. The results showed that by tailoring the membrane pore size and enhancing substance adsorption, composite organosilica membranes with superior separation performance were obtained.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Energy & Fuels
Yong Tang, Qiang Yao, Jiankun Zhuo, Shuiqing Li
Summary: The study shows that dielectric-barrier-discharge plasma can enhance the low-temperature pyrolysis and high-temperature oxidation of liquid fuels, decompose large hydrocarbons, and lower the ignition temperature of fuels. Experimental results were measured using gas chromatography and planar laser induced fluorescence techniques.
Article
Chemistry, Applied
Xiaokang Nie, Jiawei Qi, Shunjie Feng, Ya Liu, Bingbing Qiu, Huaqiang Chu
Summary: In this study, the mixture of n-heptane and toluene was used as a surrogate fuel for diesel. The flame morphology, particle size, and soot deposition of three kinds of fuel blends were investigated using various microscopy techniques. The results showed that the addition of toluene promoted the formation of soot and influenced its morphology and structure.
FUEL PROCESSING TECHNOLOGY
(2022)
Article
Chemistry, Applied
Xiaokang Nie, Jiawei Qi, Shunjie Feng, Ya Liu, Bingbing Qiu, Huaqiang Chu
Summary: This study investigated the particle size, nanostructure, microcrystalline size, and soot deposition morphology of three different fuel laminar diffusion flames of n-heptane and toluene blends using TEM, HRTEM, XRD, and FESEM. Results showed that with an increase in toluene content, flame height increased, temperature decreased, PAH content increased, promoting soot formation with larger particle size. Additionally, the graphitization degree of soot increased with toluene content, leading to larger fringe length and microcrystalline width.
FUEL PROCESSING TECHNOLOGY
(2022)
Article
Engineering, Chemical
Xiaotong Cao, Lina Qiu, Xianshe Feng
Summary: This study focused on the fundamental aspects of aniline solubility, diffusivity, and permeability in PEBA 2533, with an emphasis on aniline removal from water through pervaporation and sorption methods. The membrane showed high permselectivity for aniline separation, with caution needed in determining membrane permeability based on different measurement techniques and proper conversions for the data. The investigation also looked into sorption-desorption reversibility, which was relevant to aniline removal from water by cyclic sorption/desorption and steady state pervaporative separation.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Chemistry, Physical
Omid Amiri, Farshad Beshkar, Sangar S. Ahmed, Peshawa H. Mahmood, Ahmed Anwar Dezaye
Summary: In this study, hierarchical BiOI/BiPO4 nano/microspheres were fabricated using co-precipitation-refluxing method with optimized reaction parameters. The heterojunction BiOI/BiPO4 nanocomposites exhibited superior photocatalytic desulfurization performance compared to single BiOI or BiPO4 structures. The enhanced activity was attributed to strong visible-light absorption, unique hierarchical structures, high specific surface area, and efficient charge separation due to the formed p-n heterojunctions.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Engineering, Chemical
Ziman Hou, Ping Peng, Yongqiang Lan, Zihui Wu, Jianhua Wang
Summary: Constructing facilitated transport based on pi-complexation in mixed matrix membranes (MMMs) is a promising strategy for pervaporative desulfurization. In this study, a unique molybdenum disulfide yolk-shell nanostructure was incorporated into a polyethylene glycol matrix to fabricate MMMs for model gasoline desulfurization. The results showed that the MMMs exhibited enhanced swelling resistance against thiophene, and their desulfurization performance was remarkably improved by the addition of the molybdenum disulfide nanostructure. This work offers great potential for practical gasoline desulfurization applications.
ADVANCES IN POLYMER TECHNOLOGY
(2022)
Article
Energy & Fuels
Libo Lu, Wenwen Wei, Fan Liu, Wen Cao, Hui Jin, Yunan Chen, Liejin Guo
Summary: Supercritical water treatment is a potential technique for sulfur removal and energy conversion. Density functional theory calculations show that water acts as both reactant and catalyst in the decomposition of thiophene compounds. Additionally, the main gaseous product in the process, H2, promotes the decomposition of thiophene. Experimental results demonstrate that the maximum desulfurization rate in supercritical water is 91.54%, which is significantly higher than that in pyrolysis. Furthermore, the performance of dibenzothiophene, with the largest substituent, is the poorest in desulfurization, consistent with the results of the density functional theory calculations. The proposed reaction pathways of dibenzothiophene may be critical in understanding the desulfurization of thiophene compounds and crude oil utilization in supercritical water.
Article
Engineering, Chemical
Wenyan Shi, Xiaolong Han, Fang Bai, Chao Hua, Xingzhong Cao
Summary: Synthesis of metal-organic framework MOF-505 particles and their incorporation into a polyethylene glycol matrix led to improved desulfurization performance in mixed matrix membranes. The membrane with 3 wt% MOF-505 showed optimal desulfurization performance, with a permeation flux and enrichment sulfur factor increased by 158% and 25% compared to the pristine membrane, respectively.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Engineering, Chemical
Xia Zhan, Rui Ge, Suqi Yao, Juan Lu, Xiaofang Sun, Jiding Li
Summary: MOF-508a incorporated into PEG matrix improves the crystallinity and selective transport pathways, resulting in outstanding performance in desulfurization. The strong interaction between MOF-508a and PEG enhances the interfacial compatibility, providing more selective transport pathways for small molecules. The resulting MOF-508a/PEG-5 MMMs exhibit excellent pervaporation performance.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Maryam Ahmadzadeh Tofighy, Toraj Mohammadi
Summary: In this study, a charcoal-based nanomaterial with excellent dispersion property is synthesized and used as a nanofiller for the preparation of mixed-matrix membranes. The incorporation of charcoal-based nanomaterial improves the membrane structure, hydrophilicity, and antifouling properties, making it a promising material for environmental applications.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Energy & Fuels
Fariba Sadat Kamelian, Fereshteh Naeimpoor, Toraj Mohammadi
Summary: This study compared bioethanol production using different strains with low inoculum size. The results showed that individual cultures of Zymomonas mobilis and Pichia stipitis had the highest glucose and xylose conversion efficiencies, respectively. A sequential-co-immobilized strategy improved xylose conversion, yield, and overall productivity. The strategy was also tested in a bioreactor, resulting in increased xylose uptake rate, xylose conversion, and ethanol productivity compared to the sequential-co culture.
BIOMASS CONVERSION AND BIOREFINERY
(2022)
Article
Polymer Science
Bahareh Baheri, Amy L. Lindenberger, Sumit Sharma, Sunggyu Lee
Summary: In this study, the capability of a two-roll calendaring machine to disperse HNT particles into a LLDPE matrix at elevated processing temperatures was assessed. The prepared nanocomposites were characterized in terms of morphology, thermal properties, mechanical properties, and rheological behavior. The results showed that HNTs could be evenly distributed in the LLDPE matrix at concentrations up to 5 wt.%. The 10 wt.% composite exhibited outstanding thermal stability. The sample with a loading of 30 wt.% had the highest melting temperature and crystallization temperature. The effect of loading HNTs on the glass transition temperature (T-g) was minimal, indicating good compatibility between LLDPE and HNTs.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Review
Polymer Science
Elham Valamohammadi, Fatemeh Behdarvand, Toraj Mohammadi, Maryam Ahmadzadeh Tofighy, Zohreh Moghiseh
Summary: Polymeric membranes used in wastewater treatment and desalination show decreased efficiency over time. Polymer nanocomposite membranes (PNMs) with carbon nanotubes (CNTs) can improve permeability and antifouling properties, while also enhancing other physicochemical characteristics.
Article
Chemistry, Multidisciplinary
Fariba Sadat Kamelian, Fereshteh Naeimpoor, Toraj Mohammadi
Summary: This study investigates the efficient fermentation of high glucose and xylose levels via an innovative two-stage fermentation-pervaporation process. The use of immobilized Zymomonas mobilis and Pichia stipitis in a sequential-co-immobilized culture improves bioethanol productivity and reduces inhibitions. The study also fabricates a tubular superhydrophobic silicalite-1/PDMS pervaporative membrane to reduce inhibitions. The results show improved xylose conversion and ethanol productivity, making it a robust integrated process for second-generation bioethanol production.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Biochemistry & Molecular Biology
Soha Habibi, Toraj Mohammadi, Romina HMTShirazi, Fatemeh Atyabi, Melika Kiani, Amir Atabak Asadi
Summary: In this study, double-layer CS/PVA/mupirocin (CPM) + CS/PVA/bupivacaine (CPB) electrospun nanofiber mats were prepared and crosslinked to optimize their water-resistant and biodegradation properties. The mats exhibited defect-free and interconnected nanofibers, providing a moist environment for efficient wound breathing and repairing. The highly porous mat absorbed wound exudates and allowed air permeability, reducing the chance of bacterial infections.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Chemistry, Multidisciplinary
Zahra Rezaee, Toraj Mohammadi, Omid Bakhtiari
Summary: In this study, nanocomposite membranes with uniform dispersion of amorphous PANI nanofibers were prepared using different concentrations of Pebax 1657 and PANI. The membranes exhibited defect-free structures and lower crystallinities. As the nanofiber loading increased, the CO2 permeability and selectivity of the membranes increased, surpassing the Robeson upper bound limit and approaching the values in 2008. The CO2 permeability and ideal CO2/CH4 selectivity of the nanocomposite membrane loaded with 10 wt.% PANI nanofibers increased to 121.2 Barrer and 33, respectively, showing increments of 64% and 40%.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Ali Behboudi, Toraj Mohammadi, Mathias Ulbricht
Summary: Surface-modified silver nanoparticles with different functional groups were synthesized and used as functional fillers in nanocomposite membranes for membrane bioreactors (MBRs). The modifications successfully immobilized the nanoparticles inside the membrane, reducing silver release. The modified nanoparticles exhibited enhanced antimicrobial activity and improved the antifouling properties of the membranes. This led to significant improvements in MBR performance, with increased flux, COD removal, and flux recovery.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2023)
Article
Polymer Science
Negin Asadi Arbabi, Mahsa Ostadi, Fariba Sadat Kamelian, Toraj Mohammadi, Soheil Zarghami, Mona Dehghankar
Summary: Membrane bioreactors (MBRs) have gained attention in recent years as biotechnology-based wastewater treatment processes. However, the issue of membrane fouling/biofouling has limited their widespread use. A novel MIL-101(Cr) (MCPs)/polyethersulfone (PES) composite membrane was prepared using the phase inversion method. Adding 0.4 wt% MCPs significantly improved the hydrophilicity and pore characteristics of the membrane, resulting in reduced fouling/biofouling. The optimal composite membrane exhibited improved water flux, fouling resistance, and COD removal efficiency.
Article
Engineering, Chemical
Saeed Seraj, Toraj Mohammadi, Maryam Ahmadzadeh Tofighy
Summary: For the first time, lycopodium was incorporated into a polyvinylidene fluoride matrix to fabricate a lycopodium/polyvinylidene fluoride membrane for desalination applications. The membrane showed superior performance in terms of flux, salt rejection, water contact angle, and hydrophobicity compared to the neat polyvinylidene fluoride membrane. The presence of lycopodium with its hydrophobic nature and interconnected nano-channels in the membrane structure contributed to the improved flux and salt rejection.
FRONTIERS OF CHEMICAL SCIENCE AND ENGINEERING
(2023)
Article
Engineering, Chemical
Romina HMTShirazi, Azarakhsh Heidari, Toraj Mohammadi
Summary: Efficient separation of salts and heavy metal ions from wastewater is crucial for environmental protection and resource recovery. A new hollow fiber nanofiltration membrane (HFNM) with a highly positive charge was developed using HPEI self-assembly and MeI quaternization. The membrane exhibited superb rejection rates of Zn2+ and Mg2+, high water flux, and long-term stability, making it an effective solution for water purification.
Review
Engineering, Chemical
Hamed Faramarzi, Mehran Arzani, Abdollah Khosravanian, Hamidreza Mahdavi, Omid Bakhtiari, Toraj Mohammadi
Summary: The idea of using liquid membranes (LMs) for faster and facilitated transport is theoretically fascinating and promising for various applications. Among the different forms of LMs, supported liquid membranes (SLMs) have shown great selectivity and potential. This review comprehensively analyzes the current state of the art in SLMs for gas separation and discusses the design and application considerations when choosing between polymeric or ceramic supports. The principles of LMs, including their chronology, transport mechanism, and advantages and disadvantages are thoroughly examined, along with the different configurations suggested and their transition from the laboratory to practical implementation.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Review
Engineering, Environmental
Mona Dehghankar, Romina HMTShirazi, Toraj Mohammadi, Maryam Ahmadzadeh Tofighy
Summary: Metal-organic frameworks (MOFs) with highly flexible structures and extraordinary surface area are considered as promising materials for separation processes. However, the challenge lies in improving MOFs' stability and recyclability in membranes and overcoming membrane fouling. This article presents an overview of current progress in the combination of MOFs with polymeric membranes to address these issues.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Engineering, Chemical
Mohammad Hosein Moghadasin, Toraj Mohammadi, Maryam Ahmadzadeh Tofighy
Summary: This study reports the successful synthesis and integration of a NaP/GO nanohybrid into a PVA matrix to fabricate mixed matrix membranes. The membranes containing 0.5 wt% NaP/GO exhibited superior separation performance at an elevated temperature, with impressive separation factor and permeate flux.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Engineering, Chemical
Setareh Karimzadeh, Romina Hmtshirazi, Toraj Mohammadi, Amir Atabak Asadi
Summary: In this study, an innovative nanofibrous membrane was fabricated using an electrospinning technique for the removal of Cu(II) and Pb(II) ions from contaminated water. The membrane exhibited high removal percentages, good modeling capability, high water flux, suitable reusability, and long-term stability, making it a potential filter for water treatment applications.
SEPARATION AND PURIFICATION TECHNOLOGY
(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)
