Article
Chemistry, Physical
Zeyu Guan, Shiyu Zuo, Fan Yang, Binyang Zhang, Haiming Xu, Dongsheng Xia, Mingzhi Huang, Dongya Li
Summary: By doping Fe and S into g-C3N4 to establish an electronic bond bridge, a closed electronic loop promoting non-radical electron transfer was formed, significantly increasing the rate of pollutant degradation. S and Fe play a key role in catalyzing the decomposition of persulfate for diclofenac sodium degradation, while the system shows good adaptability under different environmental conditions.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Engineering, Environmental
Yantao Wan, Wei Zhang, Xiaolin Han, Lei Zhou, Huajun Zhen, Chengzi Wu, Qi Yu, Guangli Xiu
Summary: A novel B,N-decorated carbocatalyst (Fe@BPC-20BN) was prepared by a simple pyrolysis method, showing high catalytic performance in bisphenol A (BPA) degradation. This study provides new insights into the design and preparation of high-efficient B,N-decorated carbocatalysts for environmental remediation.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Engineering, Chemical
Zhikun Huang, Haojie Yu, Li Wang, Mingyuan Wang, Xiaowei Liu, Di Shen, Sudan Shen, Shuning Ren, Tengfei Lin, Shuangying Lei
Summary: A series of single atom catalysts (SACs) based on single Fe atoms anchored on N-doped porous carbon matrix (Fe-N-C) were prepared successfully for the degradation of toxic bisphenol A (BPA). The Fe-N-C catalyst exhibited outstanding catalytic activity and could remove 94.3% of BPA within 10 minutes. The mechanism of BPA degradation was comprehensively investigated using density functional theory (DFT) calculations.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Environmental Sciences
Feng-ping Hu, Peng Zhan, Lanlan Long, Jianhua Zhu, Gaoping Xu, Xiaoming Peng
Summary: This study successfully synthesized a novel catalyst Fe/Cu@NC-x for activating PMS to effectively remove BPA from water. Under optimized conditions, the degradation efficiency of BPA reached 98% in 30 minutes, demonstrating significant potential for the removal of organic pollutants.
Article
Environmental Sciences
Xiaohu Duan, Xinyao Liu, Shuhu Xiao, Cong Du, Binfei Yan
Summary: The conventional precursor preparation of metal-organic frameworks (MOFs) for nitrogen-doping carbon materials is complex and time-consuming. In this study, Fe-BTC gel/nitrogen source-derived carbon materials were synthesized and their performance as catalysts was investigated. Fe-C-N(M) synthesized from Fe(NO3)3·9H2O, trimesic acid, and melamine was identified as the optimal catalyst for the removal of sulfadimethoxine (SMZ).
Article
Chemistry, Physical
Ziyan Du, Jingxi Qin, Kang Zhang, Linwei Jia, Ke Tian, Junfeng Zhang, Haijiao Xie
Summary: This study demonstrates that FeSA is a highly efficient single atom catalyst for the degradation of organic pollutants and exhibits excellent catalytic activity in complex water bodies. The unique geometric configuration and highly uniform active sites of FeSA make it promising for various applications.
APPLIED SURFACE SCIENCE
(2022)
Article
Environmental Sciences
Liu-Xi Yang, Jia-Cheng E. Yang, Ming-Lai Fu
Summary: Porous magnetic CoFe2O4 nanocrystals were synthesized using bimetal-organic framework as a precursor and used as catalysts for the removal of chloramphenicol. The CoFe2O4 NCs showed high degradation efficiency and removal of total organic carbon during the removal of CAP.
Article
Chemistry, Organic
Xiao-Di Su, Zhu-Sheng Yang, Wei Gong, Zhi-Xiang Wang, Xiang-Yu Chen
Summary: We have discovered that N-heterocyclic nitreniums (NHNs) can act as efficient catalysts for charge transfer complex without the need for any additives. The NHN cation acts as an electron acceptor, while the counter-ion I- serves as an electron donor, enabling the synthesis of diverse trisubstituted alkenes and heterocycles.
ORGANIC CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Physical
Feng Hu, Ying Liu, Xiaowen Shi, Ling Xiao
Summary: Fe/Mn-loaded nitrogen-doped porous carbonaceous materials were synthesized for organic contaminants removal through a one-step pyrolysis process. The effects of component ratios and pyrolysis temperature on the removal of bisphenol A (BPA) were investigated, and optimal conditions for high removal efficiency were identified. The synthesized material exhibited a large specific surface area, hierarchical pore structures, and nitrogen doping, which facilitated the adsorption of pollutants and activation of peroxymonosulfate. The degradation of BPA was achieved through catalysis and electron transfer mechanisms.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Engineering, Chemical
Wenjin Chen, Dongdong He, Jin Huang, Ke Zhu, Lele Lei, Hongmei He, Yushi Ai
Summary: The development of novel carbon-based catalysts for activating peroxymonosulfate (PMS) has attracted extensive attention in the removal of organic pollutants in water. This study synthesized two types of N-doping catalysts with different morphology and structure using different amino acids as raw materials. The 3D structure catalyst Fe@CN-Ala/PMS showed the highest degradation efficiency, with a larger pore volume and higher specific surface area facilitating substance transfer and more active site exposure.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Environmental
Ting Yang, Shisuo Fan, Yang Li, Qi Zhou
Summary: A high-efficient iron-based heterogeneous catalyst with atomically dispersed Fe-Nx sites was prepared for the activation of peroxymonosulfate (PMS). Single-atom iron-nitrogen-carbon catalysts exhibited superior performance in catalytic activation of PMS, with Fe-Nx sites confirmed as the main active sites.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Environmental
Jianyuan Zhen, Shuoshuo Zhang, Xuming Zhuang, Shakeel Ahmad, Taeho Lee, Hongyu Si, Chengbo Cao, Shou-Qing Ni
Summary: CuO-Fe3O4-BC nanoparticles were successfully synthesized as a heterogeneous catalyst for the degradation of BPA using peroxymonosulfate. The addition of CuO achieved a high removal efficiency of BPA in a wide pH range, with 100% removal efficiency reached in 30 minutes at pH 9.0. The synergistic effect of copper and iron ions improved electron transfer and radical generation rates, leading to efficient BPA degradation.
JOURNAL OF WATER PROCESS ENGINEERING
(2021)
Article
Green & Sustainable Science & Technology
Cong Hui, Bo Gao, Jiadong Liu
Summary: The study prepared sludge-based biochar with Fe, P, and N through anaerobic carbonization using excess sludge. The biochar's adsorption performance was enhanced after sulfuric acid pickling, with increased surface area and reduced pore size, showing improved removal of tetracycline pollutants in aqueous solutions.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Engineering, Environmental
Qikai Shentu, Zenglong Wu, Wenkai Song, Shiyuan Pan, Zhenyang Zhou, Weiyang Lv, Changsheng Song, Yuyuan Yao
Summary: Carbon-doped boron nitride (C-BN) catalyst synthesized through one-step pyrolysis method exhibited excellent activity for bisphenol A removal even at low temperature. The remarkable performance of C-BN was attributed to the B-N-C moieties, which promoted the generation of superoxide radicals.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Chemical
Yanjiao Gao, Yu Chen, Tiehong Song, Rui Su, Jiacheng Luo
Summary: The BC/PMS system has been proven to be effective for the removal of bisphenol A (BPA) pollutants in water bodies, with stable performance and high removal efficiency.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Environmental
Shiyu Zuo, Dongya Li, Zeyu Guan, Fan Yang, Junqi Song, Haiming Xu, Dongsheng Xia, Huanxuan Li, Xiaohu Li
Summary: This study successfully developed a synergistic radical/nonradical oxidation pathway by establishing a directional built-in electric field, which enables the efficient and sustained degradation of toxic organic pollutants. By achieving electron synergy, the reaction rate constant was increased by 38.3 times, leading to stable removal of pollutants.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Green & Sustainable Science & Technology
Shiyu Zuo, Dongya Li, Zeyu Guan, Yi Zhu, Mengjie Pu, Dongsheng Xia
Summary: This study reveals the role of CuO in promoting non-radical oxidation pathways during wastewater treatment, leading to CO2 emission reduction and capture. The CuO/PMS system can effectively detoxify organic pollutants and convert CO2 into stable carbonates, providing a viable pathway for carbon neutral wastewater treatment.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Engineering, Chemical
Yichen Ding, Dongya Li, Shiyu Zuo, Zeyu Guan, Su Ding
Summary: The research demonstrated that B doping accelerated the Cu(II)/Cu(I) cycle, achieving the synergistic effect of radicals and non-radical pathways. The PMS/B-CuxO system exhibited consistent performance in a wide pH range of 5-11.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Chemistry, Physical
Weishan Wang, Dongya Li, Shiyu Zuo, Zeyu Guan, Haiming Xu, Su Ding, Dongsheng Xia
Summary: This study utilizes discarded leaves to prepare leaf biochar, which is adjusted to enhance photothermal conversion performance, achieve efficient solar evaporation, purify metal ions, and produce clean water from wastewater.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Agronomy
Shiyu Zuo, Jing Li, Wanrong Gu, Shi Wei
Summary: Proline plays an important role in promoting seed germination and regulating metabolism in maize embryos under low temperature stress. It enhances the germination potential and vigor of seeds, increases the activity of enzymes involved in growth and metabolism, alleviates the inhibition of low temperature on seed germination, and improves energy metabolism and respiratory activity.
Article
Nanoscience & Nanotechnology
Yichen Ding, Shiyu Zuo, Dongya Li, Zeyu Guan, Fan Yang
Summary: The spatial structure regulation of catalysts can optimize the reaction pathway and enhance mass transfer kinetics, achieving efficient and low-consumption removal of pollutants in Fenton-like technology. This study used N,N-dimethylformamide (DMF) intercalation to adjust the interlayer spacing of FeOCl, thereby enhancing mass transfer kinetics and altering the catalytic pathway. The DMF-FeOCl/PS system showed good resistance to complex water environments and achieved efficient removal of pollutants and low CO2 emissions in high-salt wastewater.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Engineering, Environmental
Qi Jiang, Ruihu Lu, Junfeng Gu, Long Zhang, Kailong Liu, Mengyan Huang, Peng Liu, Shiyu Zuo, Yilong Wang, Yan Zhao, Peiyan Ma, Zhengyi Fu
Summary: In this research, a high-entropy metal hydroxymethylate FeCoNiMgCr(OH)(OCH3) material was synthesized via a one-step solvothermal method. The material exhibits outstanding performance for catalyzing lattice-oxygen-participated oxygen evolution reaction (OER) due to the synergistic effect of five metal cations and complete surface reconstruction induced by a methoxyl group. Furthermore, a universal ionic potential rule for guiding the synthesis of metal hydroxymethylate materials is summarized.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Liping Zhang, Xiangchuan Zhao, Zhaoyun Chu, Qing Wang, Yue Cao, Jiao Li, Wu Lei, Jun Cao, Weimeng Si
Summary: Rational design of transition metal catalysts with robust and durable electrocatalytic activity for hydrogen evolution reactions (HER) is crucial for renewable energy conversion and storage. In this study, cobalt nanoparticles (Co-NPs) were coated with nitrogen-doped carbon nanotubes (NCNTs) on accordion-like Ti3C2Tx-MXene (Co-NCNT/Ti3C2Tx). The Co-NCNT/Ti3C2Tx hybrid catalyst exhibited excellent HER performance, surpassing many reported electrocatalysts.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Kailong Liu, Long Zhang, Qi Jiang, Mengyan Huang, Peng Liu, Shiyu Zuo, Peiyan Ma, Zhengyi Fu
Summary: Transition metal-based cocatalysts are crucial for boosting the surface kinetics of hematite photoanode. However, their effectiveness is limited by the shallow reconstruction process that generates highly efficient metal oxyhydroxides during the oxygen evolution reaction. To overcome this limitation, a Brnsted base-regulated strategy is developed to promote in situ surface reconstruction of cocatalysts on Ti-doped hematite under photoelectrochemical conditions. The resulting CoWO4 cocatalyst-decorated Ti-doped hematite photoanode exhibits significantly enhanced photocurrent density compared to activated Ti-doped hematite and CoOx/Ti-doped hematite. Tungstate promotes the surface reconstruction of cobalt-based cocatalyst, resulting in improved charge separation and transfer efficiency and enhanced performance of the Ti-doped hematite photoanode.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Engineering, Chemical
Li Wu, Shiyu Zuo, Yi Zhu, Qihui Wang, Dongya Li
Summary: An ingeniously constructed coordination-driven boron (B) and copper (Cu) system on carbon nitride has been developed to tackle the sluggish reduction reaction of catalyst sites in heterogeneous Fenton-like systems for efficient toxic organic wastewater treatment. The electron transfer from B to Cu facilitates the cycling of Cu(I)/Cu(II) redox pairs, leading to a 16-fold increase in the degradation rate of Bisphenol A (BPA). Singlet oxygen (1O2) and surface-active complexes play crucial roles in the reaction. The system exhibits excellent stability and adaptability under different environmental conditions (pH, humic acid, and anions) and effectively reduces the toxicity of BPA. This work provides valuable insights into the coordination-driven effect in Fenton-like systems for efficient wastewater treatment.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Engineering, Environmental
Yan Wang, Tong Xiao, Shiyu Zuo, Jinquan Wan, Zhicheng Yan, Bin Zhu, XiaoLong Zhang
Summary: By tuning the defects of the C-N co-ordination of the support, the polarized electric field (PEF) characteristics are changed, which affects the electron transport behavior. This study proposes a novel PEF regulation strategy and explores its mechanism for safe treatment of ECs.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Engineering, Chemical
Yichen Ding, Shiyu Zuo, Zeyu Guan, Su Ding, Dongya Li
Summary: Surface hydroxyl groups play a crucial role in the removal of contaminants through advanced oxidation technology. In this study, a novel surface hydroxyl-riched CaCO3@CuO composite was constructed to investigate the role of surface hydroxyl groups in pollutant removal. The hydroxyl groups on the composite's surface accelerated the adsorption between peroxymonosulfate and the catalyst, enhancing the catalytic reaction and increasing the kinetic removal rate of bisphenol A by 2.76 times. The dominant reactive oxygen species in the CaCO3@CuO/PMS/BPA system was found to be 1O2. The system exhibited wide pH adaptability (pH=3-11) and good tolerance to complex water environments. This study provides new insights into the polymerization mechanism by surface hydroxyl groups in Fenton-like reactions for contaminant removal.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Engineering, Chemical
Shiyu Zuo, Yichen Ding, Zeyu Guan, Yiming Zhang, Dongya Li
Summary: The tandem interaction of core-shell structures can regulate the directional switching of reactive oxygen species (ROS) to achieve efficient oxidation removal of organic pollutants.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Engineering, Chemical
Zeyu Guan, Yiming Zhang, Shiyu Zuo, Shibo Zhu, Weishan Wang, Dongya Li
Summary: The detoxification and harmless treatment of toxic organic industrial wastewater are crucial for the global water environment and human life safety. In this study, boron-doped iron oxide (FeOx-B) was synthesized to enhance the electron transfer during peroxymonosulfate (PMS) catalysis, leading to efficient degradation of the contaminant TTCH. Compared with commercial Fe2O3 and Fe3O4, FeOx-B exhibited significantly higher removal rate of TTCH. The interaction between B-O and the contaminant promoted the reduction of Fe(III) and changed the reactive species in the system.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Engineering, Environmental
Shiyu Zuo, Yichen Ding, Li Wu, Fan Yang, Zeyu Guan, Su Ding, Dongsheng Xia, Xiaohu Li, Dongya Li
Summary: This study aims to improve the utilization of hydroxyl radicals (·OH) in Fenton-like reactions. FeOCl is encapsulated within a Metal Organic Framework (MOF) to form a yolk-shell reactor (FeOCl-MOF), which increases the electron density of FeOCl and promotes the efficient conversion of H2O2 to ·OH. The unique structure of FeOCl-MOF concentrates catalytic and adsorption sites in a confinement space, leading to high catalytic performance and improved utilization of ·OH.
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)
