Article
Engineering, Chemical
Yan Wang, Yangxian Liu, Zhifei Dou, Chi Ma, Xianggang Tang
Summary: Compared with heterogeneous activation technology by transition metal oxides, the biomass carbon-activated Oxone technology is getting more attention due to its no metal ion leakage, which leads to no secondary pollution. In this study, a biomass carbon-activated Oxone system under high temperature synergism was designed to simultaneously remove NO and Hg0 from simulated flue gas. The results show that hydroxyl radicals are the dominant oxidant for NO removal, while sulfate radicals are the dominant oxidant for Hg0 removal. The synergistic effect of high temperature and biomass carbon plays a vital role in the efficient removal of NO and Hg0.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Engineering, Environmental
Tao Li, Amal Abdelhaleem, Wei Chu, Weicheng Xu
Summary: The study demonstrated that the pyrite/oxone process is an efficient method for the degradation of propanil, with more than 90% decay achieved within 15 minutes. The generated SO4- and OH were found to be the dominant reactive radicals, with optimal reaction pH values observed at pH 9.1 and pH 2.9. The Fe(II) regeneration and sulfur conversion play important roles in the oxone activation mechanism. Co-existing natural water constituents have differing effects on the pyrite/oxone process, and the process shows promise for organic compound removal in water.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Engineering, Chemical
Wei-Jie Liu, Eilhann Kwon, Nguyen Nhat Huy, Ta Cong Khiem, Grzegorz Lisak, Thomas Wi-Afedzi, Chen-Chang Wu, Farshid Ghanbari, Kun-Yi Andrew Lin
Summary: This study successfully modified commercial Co nanoparticles through a facile sulfidation process, enhancing their catalytic activity for efficient degradation of the sunscreen agent PSA. The findings provide valuable insights into the degradation behavior of PSA.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2022)
Article
Engineering, Environmental
Ta Cong Khiem, Xiaoguang Duan, Wei-Jie Liu, Young-Kwon Park, Ha Manh Bui, Wen-Da Oh, Suresh Ghotekar, Yiu Fai Tsang, Kun-Yi Andrew Lin
Summary: This study designed hollow rhombic cobalt sulfide (HRCS) as a template via a single-step sulfidation of cobaltic metal organic framework (CoMOF). The obtained HRCS exhibited superior catalytic performance due to its increased electroactive sites and reduced charge transfer resistance.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Environmental Sciences
Ta Cong Khiem, Po-Hsin Mao, Young-Kwon Park, Xiaoguang Duan, Bui Xuan Thanh, Chechia Hu, Suresh Ghotekar, Yiu Fai Tsang, Kun-Yi Andrew Lin
Summary: In order to degrade AZRS, a highly oxidizing agent needs to be developed and Co3O4 nanoparticles with ordered pores need to be synthesized using a templating agent. This allows for the stable dispersion and activation of the oxidizing agent within the pores, improving the degradation efficiency.
Article
Engineering, Chemical
Guanhan Chen, Hongjie Wang, Wenyi Dong, Wenhui Ding, Feifei Wang, Zilong Zhao, Yuxiong Huang
Summary: The leaching of cobalt (Co2+) in the Co3O4 activated PMS system can be effectively suppressed by converting Co(OH)(2) to Co3O4 via pyrolysis treatment, and the degradation performance of antibiotics in the Co3O4 activated PMS system can be enhanced by the use of reduced graphene oxide (rGO).
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Siting Shao, Jiahao Cui, Lina Li, Mingqi Wang, Peng Zhang, Jianguo Cui, Chun Hu, Yubao Zhao
Summary: Nano-confined cobalt has a highly efficient mediated-electron transfer pathway for the degradation of organic pollutants using peroxydisulfate activation. The spatial confinement of cobalt affects the decomposition rate of peroxydisulfate, showing an inverse relationship with the electron density of pollutants.
Article
Chemistry, Analytical
Zhichong Qi, Pengcheng Yan, Junchao Qian, Linhua Zhu, Henan Li, Li Xu
Summary: In this study, a photoelectrochemical (PEC) aptasensor based on graphitic carbon nitride (g-C3N4) loaded by CoN nanoparticles was proposed for sensitive detection of Atrazine (ATZ). The aptasensor showed excellent stability, selectivity, and anti-jamming capability, making it a practical technology for selective and sensitive detection of ATZ in the aquatic environment.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Chemistry, Physical
Xin-Ru Lin, Eilhann Kwon, Ching Hung, Chao-Wei Huang, Wen Da Oh, Kun-Yi Andrew Lin
Summary: A 3D hierarchical catalyst CONCF, decorated with Co3O4 nanocubes on macro nitrogen-doped carbon form, exhibits higher catalytic activity compared to traditional Co3O4 nanoparticles for degrading SUA, showing a stable catalytic performance over multi-cyclic degradation of SUA.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Engineering, Environmental
Wei-Jie Liu, Young-Kwon Park, Wei-Hsin Chen, Ha Manh Bui, Venkata Subbaiah Munagapati, Duong Dinh Tuan, Jet-Chau Wen, Siming You, Wen Da Oh, Kun-Yi Andrew Lin
Summary: This study demonstrates the hormone disrupting effects of Ensulizole and proposes a promising heterogeneous catalyst, CONS, for efficient degradation of Ensulizole.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Engineering, Environmental
Dong Guo, Yongqiang Wang, Chen Chen, Jiaqi He, Meilin Zhu, Jie Chen, Conglu Zhang
Summary: A new strategy for the synthesis of high-performance visible-light-driven catalysts and efficient persulfate activation was proposed by synthesizing pg-C3N4/Co3O4/CoS and suggesting a photocatalysis-PMS oxidation coupling system. The developed catalyst showed improved photocatalytic and PMS activation efficiency, resulting in fast degradation of BPF under visible light and high TOC removal rate, indicating great potential for wastewater treatment.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
Tai Li, Peixin Cui, Xiaolei Wang, Cun Liu, Yu Zeng, Guodong Fang, Yuan Zhao, Juan Gao, Yujun Wang, Dongmei Zhou
Summary: In this study, a novel cobalt-doped C3N5 material was developed for efficient and stable activation of PMS to degrade organic pollutants. The activation mechanism was elucidated using various characterization techniques, and the results showed that Co-C3N5 exhibited excellent catalytic performance with high stability and wide pH adaptability.
ENVIRONMENTAL SCIENCE-NANO
(2022)
Article
Chemistry, Inorganic & Nuclear
Xuechang Ren, Yujie Zhang, Linhai Yang, Zuoyan Chen
Summary: In this study, cobalt-doped graphitic carbon nitride composite photocatalyst was prepared and showed higher catalytic activity for ofloxacin degradation under sunlight exposure, with sulfate radical identified as the main active species in the system. Cobalt doped graphite carbon nitride exhibits great potential for application in the degradation of environmental pollutants.
INORGANIC CHEMISTRY COMMUNICATIONS
(2021)
Article
Chemistry, Physical
Meng Zhang, Hui Gao, Jing Chen, Ehiaghe Agbovhimen Elimian, Hongpeng Jia
Summary: Photothermocatalysis is a promising approach for efficient catalytic reactions, and this study presents the synthesis of a carbon nitride-induced urchin-like catalyst with enhanced photothermal catalytic performance. The catalyst exhibits good catalytic activity under full spectrum irradiation, with high toluene conversion and CO2 yield. Light irradiation enhances the light-driven thermocatalytic performance by activating lattice oxygen and inducing the formation of oxygen vacancies.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Engineering, Chemical
Zexiang Wang, Yufei Han, Weiliu Fan, Yuxia Wang, Lihui Huang
Summary: The new MnO2/carbon@carbon nanotubes (MnO2/C@CNT) shell-core nanohybrid synthesized in this study showed enhanced degradation of tetracycline (TC) with MnO2/C@CNT-PMS systems exhibiting the best TC degradation efficiency at 85.6% in 10 minutes. The stripping and insertion of nanocarbon during synthesis enhanced electron transfer and conversion of Mn and O species, with SO center dot-4 identified as the main active specie during the catalytic reaction. LC-MS analysis was used to propose reasonable degradation pathways of TC.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Materials Science, Ceramics
Suresh Ghotekar, Shreyas Pansambal, Van-Huy Nguyen, Sachin Bangale, Kun-Yi Andrew Lin, H. C. Ananda Murthy, Rajeshwari Oza
Summary: Spinel zinc chromite nanorods (ZnCr(2)O(4) NRs) were prepared successfully using a sol-gel auto combustion method with urea as fuel. The synthesized ZnCr2O4 NRs exhibited single crystalline phase and cubic spinel structure, showing significant antibacterial, antifungal, and antimalarial activity.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2023)
Article
Engineering, Environmental
Aydin Hassani, Paria Eghbali, Fayyaz Mahdipour, Stanislaw Waclawek, Kun-Yi Andrew Lin, Farshid Ghanbari
Summary: In this study, a CFO-rGO nanocomposite was synthesized and used to activate PMS under UVA-LED irradiation for BPA treatment. The CFO-rGO was characterized by various analytical techniques and its performance, operating factors, reactive species, and mechanism were investigated. The results showed that CFO-rGO exhibited efficient degradation of BPA under mild conditions, with high potential for recyclability and stability.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Zheng-Yi Choong, Mohamed Faisal Gasim, Kun-Yi Andrew Lin, Tuan Sherwyn Hamidon, Hazwan Hussin, Wen -Da Oh
Summary: Multi-heteroatom doping enhances the affinity of biochar for catalysis. A series of N, S-codoped biochar (BSN) were synthesized at different temperatures using a one-pot calcination protocol. BSN-800 showed the best performance as a peroxymonosulfate (PMS) activator for gatifloxacin (GAT) removal due to its high specific surface area and synergistic effect between heteroatoms. The study provides a better understanding and potential application of multi-heteroatom-doped biochar as a catalyst for antibiotics removal.
CHEMICAL ENGINEERING JOURNAL
(2023)
Review
Engineering, Environmental
Jechan Lee, Kun-Yi Andrew Lin, Sungyup Jung, Eilhann E. Kwon
Summary: The integration of waste-to-energy conversion with other renewable energy processes is a key strategy for waste disposal and reducing reliance on fossil fuels. Proper system configurations are crucial for sustainable power generation. Comparative analysis of hybrid systems is lacking in existing literature.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Environmental Sciences
Yi-Chun Chen, Ku-Fan Chen, Kun-Yi Andrew Lin, Han-Pang Su, Dong-Ni Wu, Chia-Hua Lin
Summary: Microplastics have become a global concern, and a recent study found their presence in the bloodstreams of healthy individuals. However, there is a lack of precise information regarding the toxic effects of microplastics on the human vascular system. This study investigated the potential toxicity of polystyrene microplastics in human vascular endothelial cells and found that they can induce oxidative stress, apoptotic cytotoxicity, and vascular barrier dysfunction. However, exposure to realistic blood concentrations of these microplastics may not significantly increase the risk of developing atherosclerosis in humans.
Article
Environmental Sciences
Ta Cong Khiem, Po-Hsin Mao, Young-Kwon Park, Xiaoguang Duan, Bui Xuan Thanh, Chechia Hu, Suresh Ghotekar, Yiu Fai Tsang, Kun-Yi Andrew Lin
Summary: In order to degrade AZRS, a highly oxidizing agent needs to be developed and Co3O4 nanoparticles with ordered pores need to be synthesized using a templating agent. This allows for the stable dispersion and activation of the oxidizing agent within the pores, improving the degradation efficiency.
Article
Engineering, Environmental
Seong-Heon Cho, Youkwan Kim, Sangyoon Lee, Kun-Yi Andrew Lin, Wei-Hsin Chen, Sungyup Jung, Doyeon Lee, Deok Hyun Moon, Young Jae Jeon, Eilhann E. Kwon
Summary: This study proposes a thermochemical platform for converting polylactic acid waste into energy resources using carbon dioxide-assisted pyrolysis. The pyrolysis process converts impurities and additives in polylactic acid into pyrogenic gases and biocrudes. The concentration of carbon monoxide produced from pyrolysis under carbon dioxide condition is higher than under nitrogen condition, and further increases with the application of silica supported nickel catalysts.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Environmental Sciences
Yujin Hwang, Young -Min Kim, Jung Eun Lee, Gwang Hoon Rhee, Pau-Loke Show, Kun -Yi Andrew Lin, Young-Kwon Park
Summary: Removal of harmful volatile organic compounds (VOCs), such as 2-butanone, emitted from industrial plants is crucial for clean air. Recycling porous spent fluid catalytic cracking (SFCC) catalysts from petroleum refineries can reduce waste and reuse resources. Mn-Cu/SFCC and Mn/SFCC catalysts exhibited superior catalytic efficiency in the ozonation of 2-butanone compared to other catalysts studied. The improved distribution of Mn3+ species and O-vacancy sites in Mn/SFCC and Mn-Cu/SFCC catalysts enhanced their catalytic activity for 2-butanone and ozone removal.
ENVIRONMENTAL RESEARCH
(2023)
Article
Energy & Fuels
Hoesuk Yim, Soheil Valizadeh, Sumin Pyo, Seong-Ho Jang, Chang Hyun Ko, Moonis Ali Khan, Byong-Hun Jeon, Kun-Yi Andrew Lin, Young-Kwon Park
Summary: This study evaluated the potential of using acid mine drainage sludge (AMDS) as a catalyst for woody sawdust gasification to produce H2-rich gas. The effects of temperature, equivalence ratio, and contact mode on gas yield and H2 selectivity were investigated. The use of AMDS catalyst resulted in higher gas yield and higher H2 and CO2 content compared to non-catalytic cases, due to redox reactions of Fe2O3 within the gasification process. Increasing temperature and equivalence ratio enhanced gas yield and H2 concentration, while the ex situ contact mode showed better results than the in situ case.
Article
Chemistry, Physical
Xin-Yu Jiang, Eilhann Kwon, Jet-Chau Wen, Jorge Bedia, Bui Xuan Thanh, Suresh Ghotekar, Jechan Lee, Yu-Chih Tsai, Afshin Ebrahimi, Kun-Yi Andrew Lin
Summary: The increasing consumption of room-temperature ionic liquids (RTILs) poses a serious threat to aquatic ecology due to their toxicities. Thus, it is urgent to develop processes for removing RTILs from water, with 1-butyl-3-methylimidazolium chloride (C4mimCl) being the most representative RTIL for studying removal methods. This study presents a hierarchical structure, Cu2S on copper mesh (CSCM), which exhibits superior catalytic activity for degrading C4mim through activating hydrogen peroxide (HP).
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Engineering, Environmental
Siriluk Ekwong, Jarungwit Boonnorat, Kun-Yi Andrew Lin, Songkeart Phattarapattamawong
Summary: This study aimed to compare the efficacy of a UV/chlorine process, chlorination, and UV irradiation in removing trimethoprim (TMP) and its phytotoxicity. The UV/chlorine process showed the highest effectiveness in removing TMP, followed by chlorination. UV irradiation had a minimal effect on TMP removal. Additionally, the UV/chlorine process effectively detoxified TMP and reduced its phytotoxicity.
JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH PART A-TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING
(2023)
Article
Engineering, Chemical
Xin-Yu Jiang, Eilhann Kwon, Hou-Chien Chang, Nguyen Nhat Huy, Xiaoguang Duan, Suresh Ghotekar, Yu-Chih Tsai, Afshin Ebrahimi, Farshid Ghanbari, Kun-Yi Andrew Lin
Summary: This study aims to develop cobalt-based catalysts for activating monopersulfate (MPS) to degrade Carbofuran (CFR). The results show that CuCo2O4 can be formed by growing on Cu foam, and CuCo2O4@CF (CCO@CF) exhibits the highest catalytic activity, leading to the most favorable CFR degradation. Through the experimental results, the effectiveness of CCO@CFs as MPS activators is validated.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Energy & Fuels
Wei-Hsin Chen, Partha Pratim Biswas, Aristotle T. Ubandoe, Eilhann E. Kwon, Kun-Yi Andrew Lin, Hwai Chyuan Ong
Summary: This research used artificial neural networks (ANNs) to optimize operating parameters for the catalytic thermochemical conversion of methanol and ethanol, and investigated their impact on hydrogen production. The study found that peak methanol conversion (99%) occurred at a lower temperature of 300 degrees C, while peak ethanol conversion (85%) occurred at 500 degrees C. The ANN technique is cost-effective, quick, and precise, and has vast potential for hydrogen energy production and industrial applications.
Article
Chemistry, Physical
Duong Dinh Tuan, Huu Tap Van, Dang Thi Thai Ha, Jet-Chau Wen, Eilhann Kwon, Suresh Ghotekar, Bui Xuan Thanh, Jechan Lee, Yiu Fai Tsang, Kun-Yi Andrew Lin
Summary: In this study, a void-engineered shaggy cobalt oxide (VSCO) catalyst was successfully constructed using a cuboid cobalt-based metal organic framework (Co-MOF) as a template. The VSCO catalyst exhibited unique structural properties, such as large internal void, high specific surface area, and abundant oxygen vacancy, enabling enhanced hydrogen production from NaBH4 hydrolysis. The VSCO catalyst also showed lower activation energy compared to commercial Co3O4 and other noble metals, and maintained its outstanding catalytic activity over multiple cycles.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Review
Green & Sustainable Science & Technology
Wangliang Li, Rohit Gupta, Zhikai Zhang, Lixia Cao, Yanqing Li, Pau Loke Show, Sunil Kumar, Vijaya Kumar Gupta, Kun-Yi Andrew Lin, Sunita Varjani, Stephanie Connelly, Siming You
Summary: High-solid anaerobic digestion (HSAD) is an effective method for disposing of organic waste and mitigating climate change through bioenergy recovery. However, HSAD faces challenges such as low biogas and methane yields, slow reaction rates, and inhibition due to mixing limitations. This article critically reviews recent progress in HSAD, focusing on transport phenomena and process modeling. It discusses hydrodynamic phenomena, biokinetic mechanisms, reactor simulations, advanced reactor designs, industrial applications, and key parameters for sustained HSAD operation. Further research on novel materials and the development of a generic simulation tool are needed for improving HSAD efficiency and scalability.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2023)
Article
Engineering, Chemical
Yunfei Yu, Xue Yang, Chenchen Zhang, Jie Chen, Wei Lin, Jianqiang Meng
Summary: This study reports an environmentally friendly and simple approach for preparing double-network (DN) ion gel membranes with high strength and excellent gas separation performance. By optimizing crosslinking density, mass ratio, and the type and content of free ionic liquid, the mechanical and gas separation properties of the DN membrane are improved.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Si-qi Jiang, Qiang Gao, Xi-guang Li, Chao-zhu Deng, Jun Qiu, Xiang-nan Zhu
Summary: A dual-strengthening pretreatment method is proposed to remove PVDF more efficiently and enhance the leaching of LiCoO2. Experimental results show that dual-strengthening pretreatment can effectively remove PVDF and significantly improve the leaching efficiency compared to single pretreatment methods.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Zengchi Hu, Xiaoyu Wang, Xiaohui Zhang, Xue Li, Jiangbin Xia
Summary: The rapid fabrication of high-performance composite membranes based on CMPs using simple and low-cost methods is challenging. In this study, three CMPs-based composite membranes were rapidly fabricated with adjustable size using unidirectional diffusion synthesis. The microstructural design enhanced the rejection rates of the membranes and they showed strong hydrolytic resistance, thermal stability, and acid-base resistance. Electrostatic adsorption and the adjustable microstructures significantly varied the repellence of the membranes to different charged molecules.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Farzaneh Rouhani, Matineh Ayedi, Nasser Safari
Summary: Introducing defects into porous metal-organic frameworks is important for improving their adsorption performance. Quasi-MOFs, an underutilized variant of large-scale, fundamentally deficient MOFs, have been found to have substantial amounts of unsaturated metal sites to offset the drawbacks of MOFs. In this study, a quasi-MOF was produced using a water-stable MOF and demonstrated significantly improved phosphate adsorption capability due to the presence of defect sites.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Valentin Reungoat, Morad Chadni, Louis M. M. Mouterde, Fanny Brunissen, Florent Allais, Helene Ducatel, Irina Ioannou
Summary: This study focuses on the recovery of sinapic acid using liquid-liquid extraction assisted by a hollow fiber membrane contactor from an aqueous feed obtained through the hydrolysis of mustard bran. The screening of solvents of different chemical nature showed that all tested solvents had an extraction efficiency of more than 80% for pH < 5. Four solvents were selected for use in the hollow fiber membrane contactor, and the volatile solvents showed higher mass transfer coefficients compared to non-volatile solvents. The extraction efficiency was intensified by increasing the initial concentration of sinapic acid and the feed-to-solvent ratio. CPME was found to have optimal recovery efficiency at a phase ratio of 8:1, yielding 0.9 g of sinapic acid per liter of CPME used.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Takahiro Sakamoto, Takafumi Hanada, Hayate Sato, Mayu Kamisono, Masahiro Goto
Summary: The emergence of the battery society has led to a high demand for battery metals, resulting in a strain on their supply. This study introduces a novel technique using a hydrophobic deep eutectic solvent (DES) for leaching and recovering battery metals from low-grade nickel laterite ores. The DES enables selective leaching and recovery of the metals, offering a promising pathway for the extraction of critical battery metals.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Rongrong He, Jiarui Chen, Chunyao Zhang, Dan Lu, Lin Zhang, Tao He
Summary: Researcher has developed a method to quantify the charge density in nanofiltration (NF) membrane separation layer and applied it in NF membranes that can separate Mg2+ and Li+. The results showed that overcompensated amine groups played a major role, and there was a linear relationship between charge density and coating bi-layers or PAH layers.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Zhijian Zhang, Min Chen, Zhe Lin, Zhichao Yang, Yafeng Du, Zhihui Chen, Zhenhao Yang, Kongyin Zhao, Ligang Lin
Summary: Membrane technology plays an important role in molecular/ion separation processes, but faces challenges such as membrane fouling. This study introduces a new ion-crosslinking method to fabricate copper alginate hydrogel membranes with improved mechanical strength and antimicrobial capabilities. The membranes exhibit excellent separation performance and enhanced long-term molecule/ion separation through improved anti-swelling properties. Molecular dynamics simulations and life cycle analysis highlight the pore structure and environmental friendliness of the hydrogel membranes. These findings provide valuable insights for developing sustainable hydrogel membranes with stable performance and high separation efficiency.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Dongmei Liu, Aiying Guo, Yanling Qi, Zhixin Ji, Hongjuan Li, Zhiwei Zhang, Xinyue Zhang, Kunze Wu, Aijun Cai
Summary: In this study, a stable magnetic Mg/Mn-layered double oxide-doped biochar composite (MgMnLDO-MBC) was prepared and successfully used for the removal of antibiotics and bacteria from wastewater. The composite exhibited enhanced surface areas, adsorption sites, and free radicals, leading to improved catalytic activity. The effects of different factors on the removal efficiency were evaluated, and the composite showed good reusability.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Feng Wang, Zhaoyong Bian, Yaru Zhang, Wenchao Yu, Qiang Zhang, Hui Wang
Summary: In this study, a nanofibrous layered structure of Ff-Ti3C2Tx-Co3O4 was prepared by self-assembling nanofibrous Co3O4 with lamellar fluorine-free MXene (Ff-Ti3C2Tx). The Ff-Ti3C2Tx-Co3O4 exhibited excellent catalytic activity for degradation, resistant to ionic interference, and maintained high removal efficiency of sulfamethoxazole (SMX) in municipal wastewater. The rapid SMX degradation involved fast electron transfer in redox cycles with PMS and the generation of 1O2 via PMS ->center dot O2 -> 1O2. This work provides new insights into antibiotic degradation mechanisms and electron transfer based on PMS activation.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Weipeng He, Jiacheng Luo, Yujie Wu, Tianhao Luo, Chen Tang
Summary: This study comparatively evaluated the role of cationic, anionic, and nonionic polyacrylamides (PAMs) in ballasted flocculation of clay suspensions under different aluminum sulfate (AS) coagulant dosages. The selection of PAMs and AS dosage had a significant influence on the size and shear resistance of ballasted floc aggregates.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Lixian Wang, Lizhi Zhao, Didi Si, Zhixin Li, Huiqin An, Hui Ye, Qingping Xin, Hong Li, Yuzhong Zhang
Summary: Metalloporphyrin-based nanozymes integrated with poly (vinylidene fluoride) membrane show high catalytic activity and reusability for the decolorization of Congo Red dye in continuous flow process.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Yongfei Ma, Chenyu Zeng, Yongzhen Ding, Jiayi Tang, Ondrej Masek, Zhikang Deng, Rui Mu, Zulin Zhang
Summary: In this study, sludge-derived biochar (SBC) was functionalized with various iron salts to enhance its adsorption ability for sulfamethoxazole (SMX) and magnetic collection performance. Ball milling was further employed to treat the optimal iron salt functionalized SBC (MSBC), resulting in ball milled SBC (BMSBC) with improved adsorption performance for SMX. The dominant driving mechanism for SMX adsorption onto BMSBC was confirmed to be multiple physicochemical forces, including 7C-7C conjugation, pore filling, H-bonding, Fe-O complexation, and electrostatic interactions. BMSBC exhibited favorable adsorption ability for SMX in actual waters and could be easily collected within 1 min due to its magnetic sensitivity.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Jinglin Tan, Xiaohui Mao, Wenjihao Hu, Hongbo Zeng
Summary: This study investigates the influence of PDMS chain architectures on surface properties and reveals that PDMS coatings with looped structures exhibit superior hydrophobicity, self-cleaning, and water sliding compared to coatings with linear structures. Additionally, both looped and linear PDMS coated stainless steel mesh/polyester fibers show efficient separation of oil/water mixture.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Wei-Liang Chen, Chih-Chia Cheng, Chien-Hsing Lu, Jem-Kun Chen
Summary: This study designs a novel sandwich-structured capacitor that reduces the absorption time of pollutants using dielectrophoresis force. By coating graphene oxide on polystyrene microspheres as adsorbents and encapsulating them within the capacitor, the adsorption rate is significantly enhanced. Additionally, frequency manipulation allows for the recycling of adsorbents and concentration of dyes, minimizing secondary pollution.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)