Article
Engineering, Environmental
Yilong Li, Yongkui Zhang, Xuqian Wang, Yabo Wang
Summary: Iron-based materials, such as biosynthesized schwertmannite, are excellent environmental catalysts. In this study, flake-type graphitic carbon nitride was introduced to regulate the biomineralization process and control the morphology and structure of iron-based minerals. The constructed Light/Peroxymonosulfate/Sch-CN system showed great potential in treating bisphenol wastewater, with excellent degradation ability and wide pH adaptability.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Environmental Sciences
Jianghong Li, Xueding Jiang, Haishan Guan, Zhang Liu, Jiesen Li, Zhifeng Lin, Fuhua Li, Weicheng Xu
Summary: A novel bimetallic Co-Mo-TiO2 nanomaterial was synthesized and used as a highly efficient photocatalyst for sulfamethoxazole (SMX) removal under visible light. The degradation of SMX reached nearly 100% within 30 minutes in the Vis/Co-Mo-TiO2/PMS system. The system exhibited excellent catalytic performance, wide pH range, and stability with high SMX removal capacity retention after three consecutive cycles.
ENVIRONMENTAL POLLUTION
(2023)
Article
Engineering, Environmental
Han Yi Yoo, Min Sun Kim, Hyeyoung Shin, Jonghun Lim
Summary: The study demonstrates a method to enhance the catalytic activity of black TiO2 nanotube arrays (black TNAs) and prevent deactivation in peroxymonosulfate (PMS) activation by utilizing solar energy. The black TNAs showed improved solar light absorption and electrical conductivity due to abundant oxygen vacancies on their surface, leading to higher phenol degradation rate and total organic carbon (TOC) removal efficiency compared to other TNAs systems. The mechanism switched from a non-radical pathway to a radical-involved pathway under solar light irradiation, improving the degradation and mineralization of organic pollutants.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Engineering, Environmental
Qiang Ren, Qi Yang
Summary: A novel heterojunction of BOS/BNST was synthesized in this study, which exhibited high efficiency for TCE degradation. The enhancement can be attributed to the doped Bi, N, and S in TiO2 for enhanced visible light response, improved separation efficiency of photo-induced carriers, enhanced PMS adsorption, and facilitated PMS activation, resulting in efficient degradation of TCE.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Chemistry, Physical
Kexin Wei, Andac Armutlulu, Yinxu Wang, Gang Yao, Ruzhen Xie, Bo Lai
Summary: The development of a durable TLFO nanosphere as a heterojunction photocatalyst with PMS has shown efficient removal of ATZ. The TLFO heterojunction demonstrates outstanding herbicidal effects by enhancing charge separation rate and generating reactive oxidant species.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Engineering, Environmental
Guoquan Zhang, Shaowei Hu, Xiaoyu Zhu, Xiaoxin Hu, Fenglin Yang
Summary: An interlocking T-shape structure was constructed by filling β-PbO2 crystals inside Ti3+ self-doping TiO2 nanotube arrays (TNAs) channels and depositing cauliflower-like β-PbO2 clusters on its upper surface. The performance and mechanism of the β-PbO2/TNAs/Ti anode activated peroxymonosulfate (PMS) system were investigated and elucidated. Results showed that filling β-PbO2 inside TNAs can improve the electron-transfer efficiency, oxygen evolution over-potential, tolerance to water matrices, and service lifetime of the system.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Jianhui Xu, Yufeng Liu, Dan Li, Chunhui Zhang, Xin Fu, Yunfei Zhang, Pengxu Wang, Jincheng Lu, Shenggui Chen, Lei Li
Summary: Electrocatalytic technology is used for the activation of peroxymonosulfate (PMS) for acetaminophen (ACT) degradation and detoxification. The study provides evidence that PMS activation on the cathode is mainly triggered by superoxide radical (O2-). Factors affecting ACT degradation in the EC/PMS system were evaluated and optimal kinetic constant and lowest energy consumption were determined.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Tian Wang, Jianjun Zhou, Wenjuan Wang, Yunqing Zhu, Junfeng Niu
Summary: In this study, a Ag-0.23/(S-1.66-N-1.91/TiO2-x) single-atom photocatalyst was synthesized and applied for the degradation of bisphenol A (BPA) under visible-light illumination. The catalyst exhibited higher activity and mineralization rate compared to the counterpart, indicating its potential application in environmental remediation.
CHINESE CHEMICAL LETTERS
(2022)
Article
Chemistry, Physical
Jiaqi Sun, Lifen Liu, Fenglin Yang
Summary: This study achieved simultaneous removal of refractory berberine chloride (BC) and ammonium nitrogen (NH4+-N) in a visible-light-driven marine photocatalytic fuel cell/peroxymonosulfate (PFC/PMS) system. Under optimized conditions, the system showed high removal efficiency and electricity generation, demonstrating potential for marine wastewater treatment.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Chemistry, Physical
Shi -Wei Lin, Mei-Hong Tong, Yan-Xin Chen, Rui Chen, Hai-Peng Zhao, Xia Jiang, Kai Yang, Can-Zhong Lu
Summary: Composite of rare earth oxides with TiO2 nanotube arrays effectively modifies the PEC behavior of TiO2. A CeO2/TiO2 heterojunction was prepared by loading CeO2 nanoparticles on anodized TiO2 nanotube arrays, demonstrating high photocurrent density and hydrogen evolution rate.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Chemistry, Physical
Mei-Hong Tong, Tian-Ming Wang, Shi-Wei Lin, Rui Chen, Xia Jiang, Yan-Xin Chen, Can-Zhong Lu
Summary: TiO2 is widely used as a photocatalyst for water splitting due to its high activity, low cost, abundance, safety, and stability. However, its further utilization is limited by its wide band gap and rapid recombination speed. In this study, ultra-thin carbon-doped TiO2 nanotube arrays were fabricated, which exhibited high photoelectrochemical activity and significantly narrowed band gaps and decreased charge resistance. The results suggest that ultra-thin carbon doping in TiO2 nanotube arrays can optimize photocatalysts for PEC water splitting.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Yongkui Huang, Xiangyang Yin, Pei He, Shuangwu Kou, Xiaoting Zhang, Lei Wang, Peili Lu
Summary: A novel Bi2WO6/BiOCl heterojunction nanocomposites were successfully designed and fabricated for bisphenol A photodegradation with PMS activation. The excellent catalytic performance is mainly attributed to the strong interaction between Bi2WO6 and BiOCl, resulting in enhanced photoabsorption and efficient interfacial charge separation and transfer. This paper provides a new strategy for designing efficient catalytic materials for organic contaminants remediation with PMS activation.
Article
Engineering, Environmental
Manh Dung Nguyen, Thanh Binh Nguyen, Linh Hai Tran, Thuy Giang Nguyen, Is Fatimah, Eko Prasetyo Kuncoro, Ruey-An Doong
Summary: In this study, flower-like core-shell CNBS@MnO2 heterojunction with Z-scheme structure was successfully constructed for enhanced photocatalytic degradation of diclofenac. CNBS@MnO2 provided large specific surface area and reduced interfacial resistance for rapid electron transport, and the redox cycling of Mn species activated PMS to produce sulfate radicals. The heterojunction exhibited excellent performance and stability, and the dominant reactive species for diclofenac degradation were identified.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Chemical
Jie Guo, Chun-Hui Shen, Jie Sun, Xin-Jie Xu, Xue-Yang Li, Zheng-Hao Fei, Zong-Tang Liu, Xiao-Ju Wen
Summary: The study successfully degraded NFA with a removal rate of 87.68% using the prepared Co3O4/Bi2MoO6/PMS photocatalyst, and found a synergistic effect between the p-n heterojunction and PMS activation, as well as confirmed the stability of the system.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Multidisciplinary Sciences
Enyang Liu, Xiaojian Bi
Summary: TiO2 nanotube arrays were prepared by anodization and their crystal structure was modified through calcination at different temperatures. The photocatalytic activity of the samples was evaluated by the degradation of rhodamine B under visible light. TiO2 nanotubes calcined at 600°C exhibited superior photocatalytic performance compared to other samples. Various characterization techniques were employed to study the catalyst, including X-ray diffraction, scanning electron microscopy, ultraviolet-visible diffuse reflectance spectroscopy, Raman spectroscopy, photoluminescence spectroscopy, and electrochemical testing. The improvement in catalytic activity was attributed to changes in crystal structure, surface morphology, and photoelectric properties, with the presence of anatase and rutile phases at 600°C calcination. The enhanced absorption of visible light, reduced charge transfer resistance, and suppressed electron-hole recombination were identified as contributing factors. It was also determined that h+ and •OH played key roles in the catalytic process.
ANAIS DA ACADEMIA BRASILEIRA DE CIENCIAS
(2023)
Article
Chemistry, Multidisciplinary
Jingjing Zhang, Xueqing Luo, Xiaoxin Zhang, Ying Xu, Hongbo Xu, Jinlong Zuo, Dongmei Liu, Fuyi Cui, Wei Wang
Summary: The development of a three-dimensional porous photo-thermal fiber felt (PFF) with good evaporation rate and salt-resistant ability offers a new solution for solar distillation technology.
CHINESE CHEMICAL LETTERS
(2021)
Review
Environmental Sciences
Liying Dong, Shutao Wang, Jinze Qu, Hong You, Dongmei Liu
Summary: The neurotoxic effects of novel brominated flame retardants (NBFRs) are mainly manifested in direct neurotoxicity and disruption of the neuroendocrine system, affecting neurobehavior and reproductive development. The mechanism is related to the complex interaction of neural and endocrine signals.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2021)
Article
Engineering, Chemical
Songxue Wang, Jiayu Tian, Linran Jia, Jialin Jia, Sujie Shan, Qiao Wang, Fuyi Cui
Summary: The performance of CuO catalyst dispersed in the feed water (CDF) and CuO catalyst immobilized on the ceramic hollow fiber membrane (CIM) for peroxymonosulfate (PMS) activation in submerged membrane filtration systems was systematically investigated and compared. The CIM system showed greater advantage in BPA degradation and TOC removal when treating a large volume of feed (>300 mL), and exhibited higher resistance to adverse water matrix and better antifouling performance compared to the CDF system.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Engineering, Environmental
Dongmei Liu, Xin Wang, Xiaobo Li, Aiwen Wang
Summary: This study evaluated the use of polyethylene and zeolite as media in two-stage biological aerated filters for simultaneous removal of ammonia nitrogen and organics in micro-polluted water under low temperature conditions. The optimal operating parameters were determined through single-factor experiments and response surface analysis. The results showed that the two-stage biological aerated filters had a great advantage in emergency treatment of low temperature micro-polluted water.
ENVIRONMENTAL ENGINEERING RESEARCH
(2022)
Article
Engineering, Environmental
Jialin Jia, Dongmei Liu, Qiao Wang, Huarui Li, Jiaxin Ni, Fuyi Cui, Jiayu Tian
Summary: This study investigated the degradation of bisphenol F (BPF), bisphenol AF (BPAF), and bisphenol S (BPS) by peroxymonosulfate (PMS) with TiO2 nano-tubes arrays (TiO2NTAs) under simulated sunlight irradiation for the first time. The results showed different reactive species played a dominant role in the oxidation process of BPF, BPAF, and BPS, with acidic conditions favoring their degradation. Common degradation pathways and specific degradation pathways were identified through the analysis of oxidation intermediates for the three bisphenols.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Engineering, Environmental
Aiwen Wang, Jiaxin Ni, Wei Wang, Xiyang Wang, Dongmei Liu, Qi Zhu
Summary: The study successfully prepared nitrogen-doped ZnO carbon skeleton@Bi2MoO6 for photocatalytic degradation of sulfamethoxazole, achieving enhanced separation and migration of photo-generated electrons and holes through the construction of a special 3D layered structure and oxygen vacancies.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Engineering, Chemical
Xiumei Song, Jiaxin Ni, Dongmei Liu, Wenxin Shi, Yixing Yuan, Fuyi Cui, Jiayu Tian, Wei Wang
Summary: In this study, molybdenum disulfide (MoS2) was used as a co-catalyst to enhance the degradation performance of nanoscale zero valent iron (nZVI) activated peroxydisulfate (PDS) process for sulfamethoxazole (SMX) degradation. The addition of MoS2 accelerated the Fe2+/Fe3+ cycle, leading to enhanced decomposition of PDS and improved catalytic degradation of SMX. Under optimal conditions, up to 98.6% degradation efficiency of SMX and 29.6% removal of total organic carbon (TOC) were achieved.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Chemical
Songxue Wang, Qianqian Wu, Boyin Yan, Yuan Guo, Wenxiang Xia, Jincheng Li, Fuyi Cui, Jiayu Tian
Summary: This study developed a novel membrane filtration process combined with activation and adsorption steps, which can effectively remove organic pollutants from water, demonstrating good universality and stability for repetitive use.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Environmental
Lingling Zhong, Xiaoxin Zhang, Jiaxiang Ma, Dongqing Liu, Dongmei Liu, Yu Wang, Fuyi Cui, Wei Wang
Summary: Membrane distillation is a promising technology for desalination, but mineral scaling is a major constraint. This study proposes the synergy of feed-side aeration and super slippery interface to increase water flux and mitigate scaling.
Article
Engineering, Environmental
Songxue Wang, Qianqian Wu, Rui Huang, Yuan Guo, Boyin Yan, Xiujuan Hao, Jincheng Li, Wenxiang Xia, Jiayu Tian
Summary: A hybrid process of catalytic ceramic membrane integrated with granular activated carbon (GAC) was proposed for removal of organic pollutants in water. The integrated process showed excellent removal efficiency and resistance to humic acid and various anions. Hydroxyl radicals and sulfate radicals were identified as the major reactive species responsible for the degradation process. The integrated process provides a proposed strategy for enhancing the remediation of organic pollutants.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Engineering, Environmental
Jiaxiang Ma, Liuqian An, Dongmei Liu, Jinxin Yao, Dianpeng Qi, Hongbo Xu, Chengjie Song, Fuyi Cui, Xiaodong Chen, Jun Ma, Wei Wang
Summary: Solar-driven interfacial evaporation (SIE) is an energy-efficient technology to alleviate global water shortages. However, the use of SIE poses a challenge with the evaporation and transportation of volatile organic compounds (VOCs) in the water. This research presents a 3D photocatalytic approach to enhance VOC rejection in photothermal evaporation, resulting in complete removal of added pollutants.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Physical
Aiwen Wang, Jiaxin Ni, Wei Wang, Dongmei Liu, Qi Zhu, Binxia Xue, Chein-Chi Chang, Jun Ma, Ying Zhao
Summary: This study successfully addresses the limitations of adsorption technology in fully mineralizing pollutants and the potential health risks from metal ion leakage. A micro-nanoreactor structure is designed with glutaraldehyde crosslinked chitosan as the backbone and encapsulated MOF-derived Co-Fe nitrogen-doped graphitic carbon as the activated PMS reaction center (Co-Fe/NC@GCS). High concentration sulfamethoxazole can be efficiently enriched through electrostatic attraction and hydrogen bonding, and a small amount of PMS can be rapidly activated.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Engineering, Environmental
Liying Dong, Shutao Wang, Lin Zhang, Dongmei Liu, Hong You
Summary: The combined effects of Decabromodiphenyl ethane (DBDPE) and Zinc oxide nanoparticles (ZnO NPs) on human neuroblastoma SK-N-SH cells were investigated in this study. The results showed that the two substances acted synergistically to exert toxic effects, causing excessive ROS production, inhibition of antioxidant enzyme activity, disruption of mitochondrial kinetic homeostasis, and apoptosis through regulation of related genes and proteins. The findings highlight the risk of neurotoxicity associated with DBDPE and ZnO NPs exposure.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Wenxiang Xia, Qianqian Wu, Rui Huang, Yinglu Tao, Kaimei Wang, Shuxiao Wu, Songxue Wang, Mingli Wang, Qingsheng Li
Summary: In this study, palygorskite supported cobalt-iron oxides (CoFe@PAL) were prepared and used as an activator for peroxymonosulfate (PMS) to remove rhodamine B (RhB) from water. The optimal catalytic performance was achieved for CoFe@PAL prepared with an impregnation solution concentration of 50 g L-1 and calcination temperature of 500 degrees C. The removal efficiency of RhB (10 mg L-1) by PMS (0.1 mmol L-1) activated with CoFe@PAL (1 g L-1) exceeded 98% within 60 minutes. The study also investigated the effects of various environmental factors on the removal efficiency, and identified the presence of multiple radicals in the CoFe@PAL/PMS system.
Article
Chemistry, Physical
Jingjing Zhang, Jiaxiang Ma, Dongmei Liu, Dongqing Liu, Yu Han, Ying Xu, Fuyi Cui, Wei Wang
Summary: In this study, a localized interfacial activation strategy is proposed to enhance solar evaporation. By assembling surfactant-like graphene oxide (GO) and polydopamine (PDA) into an interconnected porous photothermal matrix (IPPM), the activation interface is physically localized at the micro-frame surface of IPPM, effectively reducing the interaction energy of interfacial water molecules. The IPPM exhibits high performance under both normal and concentrated sunlight, showing great potential for practical application in solar evaporation.
JOURNAL OF MATERIALS CHEMISTRY A
(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)
