Article
Agricultural Engineering
Angel Estevez-Alonso, Mark C. M. van Loosdrecht, Robbert Kleerebezem, Alan Werker
Summary: Research has shown that controlling the dissolved oxygen concentration in microbial community-based PHA production can reduce the activity of nitrifying bacteria while promoting PHA production. By utilizing the oxygen provided by nitrifying bacteria to supply the nitrate required for PHA production, maximum PHA production rates can be maintained.
BIORESOURCE TECHNOLOGY
(2021)
Review
Agricultural Engineering
Francesco Di Capua, Francesca Iannacone, Fabrizio Sabba, Giovanni Esposito
Summary: Simultaneous nitrification-denitrification is a bioprocess that efficiently removes ammonia nitrogen through sequential redox reactions. It can be applied in biofilm systems and recent advances have shown the potential to reduce carbon and energy consumption while removing both nitrogen and phosphorus.
BIORESOURCE TECHNOLOGY
(2022)
Article
Environmental Sciences
Ali Reza Massoompour, Mohammad Raie, S. Mehdi Borghei, Raf Dewil, Lise Appels
Summary: This research focused on improving simultaneous nitrification-denitrification and phosphorus removal (SNDPR) using novel carriers, which showed increased efficiency in biological phosphorus removal and nitrogen removal. The characteristics of the carriers affected microbial adhesion, biofilm structure, and the formation of anoxic zones, ultimately influencing nutrient removal efficiency in biofilm reactors.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Engineering, Environmental
Cui Liu, Xiao Huang, Jianghua Yu, Wei Si, Yicheng Fu
Summary: Using water supply sludge to prepare ceramsite for sewage treatment shows good adsorption performance and removal efficiency. The optimal conditions for water supply sludge-based ceramsite were determined, and it demonstrated high adsorption of NO3 -N and PO43 -P. When used as denitrification biofilter carrier, the removal efficiencies of COD and TN were high, but TP removal efficiency gradually decreased. The microbial community richness remained stable during the biofilm formation, but microbial diversity decreased. The main dominant microbial communities were Acinetobacter and Methylophilaceae.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Environmental Sciences
Yinfeng Xia, Lifang Zhu, Nan Geng, Debao Lu, Cundong Xu, Piumi Amasha Withana, Meththika Vithanage, Eakalak Khan, Yong Sik Ok
Summary: The study introduced a modular floating biofilm reactor (MFBR) for in situ nitrogen removal from slightly polluted water, achieving high removal efficiencies of ammonia-N and TN with enriched indigenous microorganisms. Controlling HRT and DO significantly influenced the removal efficiencies of ammonia-N and TN. Aeration promoted nitrification but inhibited denitrification.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Engineering, Environmental
Ying Chen, Fengyuan Zhang, Xiaoshuang Shi, Mingyi Lu, Kang Qin, Quan Feng, Rongbo Guo
Summary: This study demonstrates that using PS@Fe3O4 can significantly enhance biological nitrogen removal efficiency, including improving sludge settling velocity, nitrogen removal rate, and simultaneous nitrification and denitrification rate. In addition, PS@Fe3O4 also affects dissolved oxygen concentration and pH, as well as increasing the number of nitrifying and denitrifying bacteria in MAS.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Engineering, Environmental
Ziang Su, Junting Zhao, Zheng Lu, Mengdan Wang, Congcong Guo, Xue Song, Xuebai Guo, Ming Cai, Zhenjun Wu
Summary: This study investigated the effects of different temperature conditions on nitritation denitrification. The results showed that stepwise cooling facilitated a faster start-up of the process and achieved higher nitrite accumulation compared to continuous low temperature conditions. Additionally, lower temperatures significantly inhibited denitrification activity.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Engineering, Environmental
Xueping Tian, Jingtao Zhao, Jun Huang, Guoke Chen, Yonggui Zhao
Summary: The metabolic process of aerobic granular sludge (AGS) treating piggery wastewater with high concentrations of carbon and nitrogen was elucidated through a combined analysis of microbial community, denitrification genes, and mathematical model calculations. The dominant microorganisms in AGS had potentials of various metabolic activities, with aerobic denitrification process being dominant. The study also revealed the resistance of rapid organic substrates storage in AGS during feast phase against high strength wastewater, providing carbon and energy sources in the famine phase.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Environmental Sciences
Rodrigo de Freitas Bueno, Julia Kersul Faria, Darcio Pinheiro Uliana, Vitor Silva Liduino
Summary: This study shows that the aerobic granular sludge process is effective in treating leachate from giant sanitary landfills, achieving high removal efficiency for organic matter and total nitrogen regardless of the leachate ratio. The study also demonstrates that the simultaneous nitrification and denitrification (SND) process can occur at low dissolved oxygen concentrations.
ENVIRONMENTAL TECHNOLOGY
(2021)
Article
Agricultural Engineering
Jianqi Yuan, Haiguang Yuan, Shaobin Huang, Lijie Liu, Feichao Fu, Yongqing Zhang, Fangqin Cheng, Jianfeng Li
Summary: This study compared the effects and bacterial community structure of single-chamber microbial fuel cells (MFCs) in treating NH4+-containing wastewater with different COD/N ratios. Results showed that MFCs with low COD/N had better NH4+-N removal and electrochemical performance, while MFCs with high COD/N had better removal stability and COD removal effect. High-throughput sequencing revealed that the anode community structure was weakly affected by the COD/N ratio, with Geobacter dominating, but the cathode community was complex and susceptible to the COD/N ratio. pH profiling in the cathode biofilm and FISH were used to confirm the distribution trends of nitrifiers and denitrifiers.
BIORESOURCE TECHNOLOGY
(2021)
Article
Agricultural Engineering
Junchi Li, Fan Zhang, Bin Ma, Dedong Kong, Yiming Hu, Guangsuo Chen, Yunjie Ruan
Summary: This study established a method for simultaneous nitrate and ammonium removal using an airlift sequencing batch reactor with 3-hydroxybutyrate-co-3-hydroxyvalerate as carbon source and biofilm carrier. The results showed high removal rates of nitrate and ammonia nitrogen with no significant nitrite accumulation.
BIORESOURCE TECHNOLOGY
(2024)
Article
Engineering, Environmental
Jiaran Liu, Amjad Ali, Junfeng Su, Zizhen Wu, Ruijie Zhang, Renbo Xiong
Summary: This study established an immobilized biofilm reactor for the simultaneous removal of calcium, fluoride, nickel, and nitrate by microbial induced calcium precipitation. By analyzing reactor operating parameters and component precipitates, it demonstrated effective removal of targeted substances from water bodies. High-throughput sequencing identified Acinetobacter sp. H-12 as the dominant bacterial group involved in the process.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Engineering, Chemical
Maryam Ghasemi, Sheng Chang, Sivabal Sivaloganathan
Summary: This study introduces a two-dimensional multi-species biofilm model to investigate the mechanisms of simultaneous nitrification-denitrification (SND) in membrane aerated bioreactors. The simulation results reveal that the oxygen distribution within the biofilm plays a determining role in achieving simultaneous nitrification and denitrification in MABR.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Engineering, Environmental
Bao Nguyen Quoc, Maxwell Armenta, John A. Carter, Robert Bucher, Pardi Sukapanpotharam, Samuel J. Bryson, David A. Stahl, H. David Stensel, Mari-Karoliina H. Winkler
Summary: The study found that the size of granules has a significant impact on the SND and biological phosphorus removal processes in the AGS system. Selecting granules within the size range of 212 - 1000 μm and avoiding DO values higher than 3 mgO(2)/L can achieve higher nitrogen removal capacity and energy savings.
Article
Environmental Sciences
Guclu Insel, Gulsum Yilmaz, Ferenc Hazi, Nazik Artan
Summary: A lab-scale granular sludge sequencing batch reactor (G-SBR) system performed well using synthetic wastewater, achieving a total nitrogen removal efficiency of 85% and complete total phosphorus removal with an average granule diameter of 400 μm. The performance analysis was carried out using a dual-step nitrification and denitrification model with fixed biofilm thickness. The denitrification mode only contributed 25% to TN removal, while the remaining nitrogen removal was explained by simulating simultaneous nitrification and denitrification, which accounted for 75% of denitrification during the aerobic period. The model parameters of boundary layer thickness (z(BL) = 50 μm) and half-saturation of O-2 for nitrite-oxidizing bacteria (K-O2,K-NOB = 0.5 gO(2)/m(3)) were adjusted to fit the NO2 and NO3 profiles in the SBR cycle.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Engineering, Environmental
Rongyue Wang, Bin Liu, Shijie You, Yao Li, Ying Zhang, Di Wang, Bo Tang, Yubo Sun, Jinlong Zou
Summary: Transition metal selenides, especially Ni3Se4 coated by ultrathin carbon-layer, exhibit high activity and stability for oxygen reduction and oxygen evolution reactions in alkaline media. The electronic interactions between Ni3Se4 and carbon layer contribute to efficient charge transfer for ORR/OER, with beta-NiOOH identified as the main component responsible for high OER activity. This study provides a promising reference for the future development of 3D-structured transition metal selenides-based electrocatalysts.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Environmental
Zhuang Cai, Jin Liu, Baibing Chen, Yidong Song, Xiaoqin Xu, Shijie You, Fuqiang Song, Xinyu Wang, Jinlong Zou
Summary: The in-situ modification of nano zero-valent iron (nZVI) with iron species using a one-step carbo-thermal synthesis method was found to improve the stability/reactivity and biocompatibility of nZVI-based materials. The modified nZVI showed effective removal of Rhodamine B and maintained its crystalline structure and morphology after storage and repeated use. The in-situ binding of nZVI and iron carbide (Fe3C) prevented surface oxidation and contributed to the structural stability of the material. The modified nZVI also exhibited lower bacterial cytotoxicity compared to bare nZVI. This strategy provides a promising option for designing carbides-stabilized nZVI with balanced reactivity and cytotoxicity.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Xin Meng, Jiahao Xie, Jin Liu, Bin Liu, Rongyue Wang, Peng Gu, Fangwei Ma, Xinyu Wang, Jinlong Zou
Summary: In this study, a cobalt carbide-stabilized CoFe alloy wrapped by hollow bamboo-like nitrogen-doped carbon nanotubes (CoFe-Co3C@NCNTs) was prepared. The catalyst showed ultra-high activity for oxygen reduction reaction (ORR) and relatively good performance for oxygen evolution reaction (OER), with excellent stability and potential difference between ORR and OER. The synergies between CoFe-Co3C and NCNTs, as well as the hollow structure/conductive skeleton, contributed to the excellent activity and stability of the catalyst. The coating of nitrogen-doped carbon nanotubes greatly enhanced the stability of the CoFe-Co3C heterojunctions in alkaline media.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Jiahao Xie, Yu Miao, Bin Liu, Siliang Shao, Xu Zhang, Zhiyao Sun, Xiaoqin Xu, Yuan Yao, Chaoyue Hu, Jinlong Zou
Summary: Alloying with transition metals is a feasible way to enhance the electrochemical activity and stability of molybdenum carbide. The composite NG-CoFe/Mo2C was synthesized by combining CoFe-Prussian blue analogues with graphitic carbon nitride and Mo6+. It exhibited excellent ORR and OER performances and provided a strategy to improve the stability of molybdenum carbide in oxygen electrocatalysis.
Article
Biochemistry & Molecular Biology
Jian Yao, Hai Yang Zhang, Shuang Gu, Jin Long Zou, Qiang Zhang, Ri Chu Qu
Summary: This study aims to investigate the role of circular RNA (circRNA)-AnnexinA7 (ANXA7) in non-small cell lung cancer (NSCLC) cisplatin (DDP) resistance through microRNA (miR)-545-3p targeting Cyclin D1 (CCND1).
ACTA BIOCHIMICA POLONICA
(2023)
Article
Chemistry, Multidisciplinary
Jin Liu, Xin Meng, Jiahao Xie, Bin Liu, Bo Tang, Rongyue Wang, Cheng Wang, Peng Gu, Yidong Song, Sichen Huo, Jinlong Zou
Summary: Manipulating electronic structure and defects is crucial for the functionalities of bimetallic sulfide catalysts. The vulcanization strategy used in this study resulted in defects-rich NiCo2S4 needles anchored on the surface of hollow carbon spheres (NiCo2S4/HCS). The NiCo2S4/HCS catalyst exhibited excellent activity and stability for oxygen reduction/evolution reactions and showed potential for application in zinc-air batteries.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Physical
Rongyue Wang, Jin Liu, Jiahao Xie, Zhuang Cai, Yuan Yu, Zixuan Zhang, Xin Meng, Cheng Wang, Xiaoqin Xu, Jinlong Zou
Summary: Hollow bimetallic sulfide nanocages with anchored N-doped carbon quantum dots were synthesized for oxygen reduction/evolution reactions in zinc-air batteries. The nanocages exhibited excellent performance and stability, allowing for long-term cycling.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Chemistry, Physical
Guiming Xie, Rongrong Jin, Pengju Ren, Yunming Fang, Runduo Zhang, Zhou-jun Wang
Summary: Boosted CO2 hydrogenation to methanol was achieved by introducing an appropriate amount of Au into conventional Cu-based catalysts. The Au0.005Cu/ZnO bimetallic catalyst exhibited the highest methanol production rate. The formation of Au-Cu alloy was confirmed on the AuxCu/ZnO bimetallic catalysts. Experimental characterizations and density functional theory (DFT) calculations revealed the intrinsic active sites at the metal-oxide interfaces with oxygen vacancies. The promotion effect of Au in bimetallic catalysts was attributed to the increase in active sites, facilitation of CO2 activation, and modification of intermediate adsorption. This study developed a promising Au0.005Cu/ZnO bimetallic catalyst with a trace amount of Au (only 0.4 wt%) and provided insight into the reaction mechanism of Au-promoted Cu/ZnO catalysts for methanol synthesis via CO2 hydrogenation.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Chemistry, Physical
Bin Liu, Bowen Yuan, Cheng Wang, Shijie You, Jin Liu, Xin Meng, Xiaoqin Xu, Zhuang Cai, Jiahao Xie, Jinlong Zou
Summary: Transition metal alloys anchored on heteroatoms-doped carbon nanotubes show enhanced catalytic performance for oxygen reduction/evolution reactions. The NiFe/Co-N@CNTs nanohybrids exhibit higher half-wave potential for ORR than Pt/C and lower overpotential for OER than RuO2. The alloy-carbon integrating strategy enables improved dispersion, activity, and stability of non-noble metal alloys for oxygen electrocatalysis.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Yao Nie, Xiaoqin Xu, Xinyu Wang, Mingyang Liu, Ting Gao, Bin Liu, Lixin Li, Xin Meng, Peng Gu, Jinlong Zou
Summary: Alloy-based catalysts play a crucial role in oxygen reduction/evolution reactions (ORR/OER). In this study, NiCo alloy-inserted nitrogen-doped carbon nanotubes assembled on a three-dimensional hollow nanosphere showed better ORR activity and stability than commercial Pt/C catalyst. These catalysts also exhibited a lower OER overpotential compared to RuO2. The synergistic effects between NiCo alloys and NCNTs promoted 4e(-) ORR/OER kinetics and the carbon skeleton inhibited corrosion of the alloys while CNTs prevented particle aggregation, resulting in stable bifunctional activity.
Article
Chemistry, Multidisciplinary
Xinyu Wang, Xiaoqin Xu, Yao Nie, Ruihong Wang, Jinlong Zou
Summary: Manipulating the electronic structure of alloy-based electrocatalysts can regulate their catalytic efficiency and corrosion resistance for water splitting. In this work, a metallic Co-assisted Co7Fe3 alloy heterojunction embedded in 3D honeycomb-like graphitic carbon was constructed as a bifunctional catalyst for overall water splitting. The Co7Fe3/Co-600 catalyst showed excellent catalytic activity for OER and HER with low overpotentials in alkaline media. The theoretical calculations revealed the electronic redistribution after coupling Co with Co7Fe3, which optimized the catalyst's affinity for intermediates and promoted the intrinsic OER/HER activities.
Article
Genetics & Heredity
Jinlong Zou, Fengyu Wang, Zhenping Gong, Runrun Wang, Shuai Chen, Haohan Zhang, Ruihua Sun, Chenhao Gao, Wei Li, Junkui Shang, Jiewen Zhang
Summary: SCA36 is a neurodegenerative disease caused by GGCCTG hexanucleotide repeat expansions in the NOP56 gene. This study used SMRT sequencing to sequence the expansion region in SCA36 and found that it was not composed of single GGCCTG hexanucleotides and had random interruptions.
FRONTIERS IN GENETICS
(2023)
Review
Environmental Sciences
Lixin Li, Ran Fu, Jinlong Zou, Shiwei Wang, Jing Ding, Jiazhen Han, Mengjie Zhao
Summary: In this paper, the synthesis methods, characterization techniques, and practical application fields of iron-based catalysts are summarized in detail. The catalytic performances of iron-based catalysts in the ozone system and the effects of various factors on the degradation of organic pollutants are discussed. The activation mechanisms of free radicals and the removal mechanisms of organic pollutants in the iron-based catalyst/ozone system are revealed.
Article
Chemistry, Multidisciplinary
Shijie Wang, Dongxue Song, Lijun Liao, Bo Wang, Zhenzi Li, Mingxia Li, Wei Zhou
Summary: Doping engineering of metallic elements is important in photocatalysis, especially in the transition element range, as it increases carrier concentration and absorption in the light region. Mn doping changes the local structure of BiOCl, increasing the specific surface area and mesoporous distribution. The combination of Mn doping and metal Bi reduces the forbidden bandwidth, strengthening the photocatalytic ability. The dual-technology combination of Mn doping and Bi metal has promising applications in environmental remediation.
Editorial Material
Chemistry, Multidisciplinary
Wei Zhou
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)
