Review
Materials Science, Multidisciplinary
Mehmet A. Oturan
Summary: The Electro-Fenton process is an effective method for removing organic pollutants in water, with its efficiency depending on the production rate of H2O2 and the anode material. The use of BDD film electrode in this process can significantly enhance its effectiveness.
CURRENT OPINION IN SOLID STATE & MATERIALS SCIENCE
(2021)
Article
Engineering, Environmental
Jun Zhao, Jingquan Wang, Erdeng Du, Yijie Ai, Jingjing Liu, Hongguang Guo
Summary: The increasing need for water decontamination under high salinity conditions calls for alternative processes with high efficiency and cost-effective performance, of which electrochemical technologies hold continuous attraction. In this study, a facile and cost-effective TiO2 nanotube (NT) electrode was fabricated to serve as an anode to degrade the selected contaminant under the condition of high sulfate concentration. The degradation performance and mechanism of the selected contaminant were investigated, and the as-made electrodes exhibited excellent performance for the degradation of different contaminants and reliable stability after rounds of use.
ENVIRONMENTAL SCIENCE-WATER RESEARCH & TECHNOLOGY
(2022)
Article
Engineering, Environmental
Sara Feijoo, Mohammadreza Kamali, Quynh-Khoa Pham, Azziz Assoumani, Francois Lestremau, Deirdre Cabooter, Raf Dewil
Summary: The study demonstrates the effective electrochemical degradation of carbamazepine (CBZ) in water using a Boron-Doped Diamond (BDD) anode. The optimized conditions for complete CBZ removal within 5 minutes include CBZ concentration of 1μM, pH 2, temperature of 30 degrees C, 10 mM Na2SO4, and 50 A m(-2). The presence of SO42- and NO3- ions in solution is found to be crucial for achieving optimal degradation results.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Chemical
Moussa Mbaye, Pape Abdoulaye Diaw, Olivier Maurice Aly Mbaye, Nihal Oturan, Mame Diabou Gaye Seye, Clement Trellu, Atanasse Coly, Alphonse Tine, Jean-Jacques Aaron, Mehmet A. Oturan
Summary: The electro-Fenton process was used to efficiently degrade and mineralize the fungicide thiram, with the study finding that using a BDD anode resulted in higher mineralization efficiency compared to a Pt anode, leading to almost complete removal of organic carbon from the thiram solution.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Chemical
Oscar M. Cornejo, Jose L. Nava
Summary: This study focused on the degradation of antibiotic levofloxacin (LVN) using the electro-peroxone (E-peroxone) process in a lab-scale flow plant operated in recirculation mode. The research found that the E-peroxone method achieved 63% mineralization of LVN under specific conditions, with factors such as current density, volumetric electrolyte flow rate, and initial concentration of LVN influencing the mineralization efficiency. Oxalic, oxamic, and tartaric acids were identified as the main final products of LVN mineralization during the electrolysis process.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Engineering, Chemical
Weilu Yang, Nihal Oturan, Jialin Liang, Mehmet A. Oturan
Summary: This study investigated the efficiency of the electro-Fenton (EF) process with a boron-doped diamond (BDD) anode and an electrochemically exfoliated graphene-based cathode (EEGr) for the removal of ofloxacin (OFLO) from contaminated water. The EF-BDD process improved the decay kinetics of OFLO by 1.4-2.6 times and reduced disposal costs by 28%-41% compared to the anodic oxidation (AO) process with BDD anode. The simultaneous generation of homogeneous (center dot OH) and heterogeneous (BDD(center dot OH)) hydroxyl radicals in the EF-BDD process contributed to its superior performance for mineralization of OFLO. The EF-BDD process showed potential for the oxidative degradation of OFLO and other antibiotic organic pollutants.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Review
Environmental Sciences
Qingqing Zhou, Xule Zhou, Ruihao Zheng, Zifeng Liu, Jiade Wang
Summary: This article discusses the electrochemical oxidation process based on hydroxyl radicals generated on lead dioxide and the important role of titanium-based lead dioxide electrodes in this process. It also explores methods of modifying the structure and properties of the lead dioxide active surface layer by doping transition metals, rare earth metals, nonmetals, etc. Comparisons of common preparation methods of lead dioxide are made, along with discussions on its electrochemical oxidation performance and suitable operating conditions in various wastewaters, and a systematic analysis of the factors influencing contaminant removal kinetics.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Yeney Lauzurique, Lidia Carolina Espinoza, Cesar Huilinir, Veronica Garcia, Ricardo Salazar
Summary: Winery wastewater, the largest waste stream in the wine industry, contains high amounts of organic matter that vary with time and wine production levels. Anodic oxidation using a boron-doped diamond electrode achieved 85% mineralization of the wastewater, while the mixed metal oxides electrode only achieved 2.52% degradation.
Article
Engineering, Environmental
Yang Li, Christopher J. Miller, Lei Wu, T. David Waite
Summary: This study demonstrates an electrochemical advanced oxidation process (EAOP) that can simultaneously catalyze the hydrogen evolution reaction (HER) and the oxygen reduction reaction (ORR) to generate atomic hydrogen (H*) and hydrogen peroxide (H2O2) in situ. By using a palladium-coated carbon-PTFE gas diffusion electrode (Pd/C GDE) as a catalytic cathode, hydroxyl radicals ((OH)-O-center dot) can be formed by the reaction of electrogenerated H* with H2O2. The H*/GDE process is more effective in degrading organic contaminants compared to the conventional H*/H2O2 process.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Electrochemistry
Tao Zhang, Zhe Xue, Zejun Wang, Guodong Huang, Guangpan Peng
Summary: Cemented carbide (WC-Co) is used as a substrate instead of Si, Ti, and Nb. BDD films are deposited on this substrate with different [B]/[C](gas) ratios. The addition of boron atoms reduces grain size and sp3(diamond)/sp2(graphite) ratio in the films. The electrodes exhibit a wide potential window and featureless background current, and highly doped electrodes show quasi-reversible behavior.
JOURNAL OF APPLIED ELECTROCHEMISTRY
(2023)
Article
Engineering, Environmental
Ke Wang, Xuan Xing, Wen Liu, Yi Jiang, Hongna Li, Yue Lu, Huiying Chen, Huatang Ren
Summary: In this study, a novel PbO2 electrode modified with rare earth elements (La, Ce, Gd and Er) doping was prepared by electrodeposition. The micro-morphology, crystal structure, and electrochemical properties of the modified electrode were characterized. The results showed that rare earth elements doping significantly improved the oxidation ability of the PbO2 electrode by reducing grain size, increasing oxygen evolution potential, enlarging electrochemical active surface area, and enhancing center dot OH formation ability.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Review
Environmental Sciences
Ritesh Patidar, Vimal Chandra Srivastava
Summary: This study highlights the importance of sonoelectroxidation technology in treating toxic and hazardous pollutants in aquatic bodies, as well as the potential of this method in improving wastewater treatment efficiency. By combining electrochemistry with power ultrasound, the mineralization degree of wastewater can be significantly increased, showing promising applications in wastewater treatment.
CRITICAL REVIEWS IN ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2021)
Article
Engineering, Environmental
Jiangzhou Xie, Jinxing Ma, Shixin Zhao, T. David Waite
Summary: The study successfully demonstrated the generation of high steady state hydroxyl radical oxidant at low cost under low potential using Magneli phase titanium suboxide particles as the anode material. The flow anode system developed in this study showed high efficiency and low cost for water treatment, enabling degradation of organic contaminants.
Article
Chemistry, Analytical
Jihen Abidi, Davide Clematis, Youssef Samet, Marina Delucchi, Davide Cademartori, Marco Panizza
Summary: In this study, a solid polymer electrolyte-based system was used for the electrochemical degradation of Chloroxylenol (CXL) in wastewater treatment. The effect of anode material in the electrochemical cell configuration was investigated for the first time. The results showed that the BDD/SPE cell was able to completely degrade CXL even in the absence of supporting electrolyte and in low conductive solutions. The DSA/SPE system became more competitive when NaCl was added. Response surface methodology was applied to optimize the operating conditions for both systems.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Energy & Fuels
Robson Ferreira, Jamal Chaar, Mauricio Baldan, Neila Braga
Summary: The study focused on determining metallic species using BDD electrodes in an ethanolic medium with ASV, optimizing methodological parameters. Tests were conducted on samples collected from different gas stations in Manaus, Brazil.
Article
Chemistry, Applied
Zhiwei Su, Xiangnan Liu, Shaoyun Hao, Zhongjian Li, Bin Yang, Yang Hou, Lecheng Lei, Xingwang Zhang
Summary: The study synthesized Pt/CoFe2O4-C catalyst with high ORR and OER performance for ZAB, approaching Pt/C and IrO2. Testing results showed excellent voltage performance of Pt/CoFe2O4-C in homemade ZAB.
Article
Engineering, Environmental
Jiani Yao, Ying Huang, Yang Hou, Bin Yang, Lecheng Lei, Xianjin Tang, Kirk G. Scheckel, Zhongjian Li, Di Wu, Dionysios D. Dionysiou
Summary: The study showed that the three-dimensional graphite foam formed by liquid nitrogen treatment of graphite paper can enhance the reduction efficiency of Cr(VI) in MFCs, attributed to the porous structures, edges, and O-doped defects on the surface providing more active sites and inhibiting OH- diffusion, leading to a high local pH.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Environmental Sciences
Hao Li, Xinmou Kuang, Xiaolan Shen, Jianwei Zhu
Summary: Electro-Fenton (EF) oxidation has high oxidation abilities and is widely used in the treatment of biorefractory and chemically refractory organic wastewater. However, it generates a large amount of iron sludge, which limits its large-scale application. This study compares EF oxidation and anodic oxidation (AO) for the treatment of secondary effluent of petrochemical wastewater and finds that although EF oxidation has higher treatment efficiency, it has higher energy consumption and generates a large amount of iron sludge, increasing the post-treatment cost.
ENVIRONMENTAL TECHNOLOGY
(2022)
Article
Chemistry, Applied
Zhendong Li, Li Cheng, Ke Zhang, Zhenhua Wang
Summary: Y doping improves the photocatalytic performance of BiFeO3, with Bi0.95Y0.05FeO3 showing the best activity due to its smaller particle size and lower rate of recombination of photogenerated electron-hole pairs.
APPLIED ORGANOMETALLIC CHEMISTRY
(2021)
Article
Chemistry, Physical
Han Wang, Zhongjian Li, Yan Li, Bin Yang, Jian Chen, Lecheng Lei, Shaobin Wang, Yang Hou
Summary: A porous exfoliated FePS3 nanosheet with rich sulfur vacancy (Vs-FePS3 NSs) synthesized by electrochemical exfoliation and hydrogenation treatment shows excellent activity in electrochemical NRR. The Fe species are identified as the real active sites, and S vacancies play a role in enhancing the NRR process. Vs-FePS3 NSs can also serve as the cathode of a Zn-N-2 battery with a power density of 2.6 mW cm(-2).
Article
Chemistry, Multidisciplinary
Shuomeng Zhang, Lei Wang, Liang Wu, Zhongjian Li, Bin Yang, Yang Hou, Lecheng Lei, Shaoan Cheng, Qinggang He
Summary: The study investigates the adhesion behavior of electroactive bacteria under various metabolic conditions using an integrated electrochemical single-cell force microscopy system. It establishes a nonlinear model between bacterial adhesion force and electric field intensity, and demonstrates how the EET processes impact the conformation and unfolding events of outer membrane appendages. The research reveals how the anisotropy of bacterial conductive structure translates into desired adhesion behavior in different scenarios.
Article
Chemistry, Analytical
Aiyuan Li, Jiaqi Weng, Xinmei Yan, Hao Li, Haibo Shi, Xuedong Wu
Summary: This study compared the electrochemical oxidation efficiency of four anode materials on acid orange 74 dye, with BDD electrode showing the best performance in complete removal of AO 74. Similar organic intermediates were observed on different electrodes, but the diversity of organic products depended on the oxidation ability of the electrodes.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Fan He, Yingjie Zhao, Xiaoxuan Yang, Sixing Zheng, Bin Yang, Zhongjian Li, Yongbo Kuang, Qinghua Zhang, Lecheng Lei, Ming Qiu, Liming Dai, Yang Hou
Summary: A bifunctional microreactor catalyst (CoBDC FcCA) composed of two species of Co active sites and ligand FcCA has been developed for efficient OER performance and accelerated reaction kinetics, enabling solar-driven oxygen production from water splitting.
Article
Electrochemistry
Hao Li, Yiqi Du, Xiaolan Shen, Xinmou Kuang, Jiayi Zhu, Hairong Wang
Summary: The electrochemical oxidation efficiency of bisphenol A (BPA) was compared using boron doped diamond (BDD), PbO2, and IrO2 anodes. It was found that the BDD anode showed complete BPA removal and had a higher COD removal efficiency. The oxidation on the BDD anode was mainly driven by center dot OH, while other mechanisms were responsible for the PbO2 and IrO2 anodes.
INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
(2022)
Article
Engineering, Environmental
Xiaolan Shen, Qi Liu, Hao Li, Xinmou Kuang
Summary: The graphene composite electrode improves the performance of the MFEDI system, effectively removes copper from wastewater, increases the efficiency of electrical regeneration, decreases energy consumption, and increases water recovery rate.
WATER SCIENCE AND TECHNOLOGY
(2022)
Article
Engineering, Environmental
Huiyang Bi, Chunhui Deng, Lihao Chen, Xuesong Zhao, Zhongjian Li, Yang Hou, Lecheng Lei, Bin Yang
Summary: Replacing coal with industrial organic waste in high temperature gasification to produce syngas is a viable method to reduce carbon emissions. This study developed novel numerical models to simulate the formation and control of HCl in Texaco gasifier, taking chlorine-containing substances as dichloromethane for mass transfer description during gasification. The models showed good accuracy with a minimum error of 0.55% in predicting syngas components. The simulation revealed that HCl was mainly generated near the nozzle, and increasing CaO amount and decreasing particle size had a positive effect on dechlorination. However, excessively reducing CaO size below 0.1 mm decreased its promoting effect, and high temperature in the flame zone inhibited the dechlorination reaction. Therefore, the developed models provided feasibility for optimizing operating conditions and reducing chlorine corrosion and improving stability during the gasification of organic hazardous waste.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2023)
Article
Engineering, Chemical
Xuesong Zhao, Yinhai Yang, Qi Chen, Yingna Jia, Jingjin Song, Zhongjian Li, Yang Hou, Lecheng Lei, Bin Yang
Summary: A novel horizontal continuous-flow dielectric barrier discharge (DBD) system without catalyst was developed for effective degradation of diclofenac in water. The degradation efficiency reached 90% in 14 minutes, with an energy efficiency of 0.181 g/kWh. LC-MS analysis helped identify the intermediates and propose a possible degradation pathway. Thus, the DBD reactor shows great potential for pharmaceutical wastewater treatment.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Engineering, Environmental
Hao Li, Jiahao Zhang, Yiqi Du, Meixia Shi, Xinmou Kuang, Xiaolan Shen, Wenting Si
Summary: Electrochemical activation of persulfate is an efficient and green technology for pollutant degradation. In this study, different methods were compared for peroxydisulfate (PDS) activation and pollutant degradation efficiency. The results showed that the electrochemical activation of PDS using an IrO2 anode had the highest degradation efficiency.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Mathematics, Applied
Bin Dong, Zuowei Shen, Jianbin Yang
Summary: This paper explores the approximation of functions from noisy and nonsmooth observed data, with a focus on sparse noise removal schemes. Theoretical analysis is presented, highlighting the importance of sparsity-based denoising for effective approximation. A new approximation scheme is proposed for large datasets to significantly reduce noise level and ensure asymptotic convergence.
SIAM JOURNAL ON NUMERICAL ANALYSIS
(2021)
Review
Nanoscience & Nanotechnology
Jun Ke, Fan He, Hui Wu, Siliu Lyu, Jie Liu, Bin Yang, Zhongjian Li, Qinghua Zhang, Jian Chen, Lecheng Lei, Yang Hou, Kostya Ostrikov
Summary: This study critically examines various 2D layered photoelectrode materials, discusses the correlations between the intrinsic structural properties and functions of the photoelectrodes, and analyzes strategies for assembling integrated photoelectrodes using advanced nanocarbons as co-catalysts to enhance PEC water splitting performances.
NANO-MICRO LETTERS
(2021)
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)
