Article
Chemistry, Multidisciplinary
Xiaotian Hua, Wenxuan Wang, Wei Ran, Guangzhi He, Jingfu Liu, Rui Liu
Summary: Metal nitrides, especially TiN, can effectively modulate the electronic states of Pd sites and enhance their catalytic performance in hydrodechlorination reactions, making them promising supports for highly efficient Pd catalysts.
Article
Chemistry, Physical
Roman Solovov, Verbina Orlichenia, Boris Ershov
Summary: Zerovalent iron nanoparticles with spherical shape and narrow size distribution were prepared by photochemical reduction of iron(III) in isopropyl alcohol.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Engineering, Environmental
Junmin Deng, Sunho Yoon, Mathieu Pasturel, Sungjun Bae, Khalil Hanna
Summary: This study comprehensively examines the effect of AgNPs on the reductive ability of NZVI, and finds that low doses of AgNPs decrease the reactivity of NZVI while high doses enhance it. Additionally, sulfate and humic acid are found to enhance the removal of p-NP in the NZVI-AgNP suspension.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
E. S. Lokteva, V. V. Shishova, K. I. Maslakov, E. V. Golubina, A. N. Kharlanov, I. A. Rodin, M. F. Vokuev, D. S. Filimonov, N. N. Tolkachev
Summary: Monometallic palladium and bimetallic palladium-iron catalysts were prepared using sequential and co-impregnation methods. The bimetallic catalysts showed higher efficiency in hydrodechlorination reaction compared to the monometallic Pd catalysts. The co-impregnation method resulted in better catalyst performance. The improved efficiency was attributed to wider pores, formation of PdFe alloys or Pd-Fe-Ox species on the surface, high Pd0/Pd2 ratio, low extent of Pd encapsulation, and coordinately unsaturated sites.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Lei Tian, Ruijie Cheng, Linyu Li, Lizhi Tan, Guangyan Xiang, Jun Xiong
Summary: Catalytic hydrodechlorination (HDC) is an attractive method for treating wastewater by converting chlorophenols (CPs) into cyclohexanone. The HDC performance of Pd catalyst can be improved by modifying it with La, resulting in excellent degradation efficiency, high selectivity, and catalytic stability.
REACTION KINETICS MECHANISMS AND CATALYSIS
(2022)
Article
Engineering, Environmental
Xiaohui Chen, Xun-an Ning, Xiaojun Lai, Yi Wang, Yaping Zhang, Yao He
Summary: The study found that chlorophenols (CPs) from textile dyeing plants pose a potential moderate to high risk to the environment, and the Fenton process can help in treating hazardous sludge with CPs. Proper treatment conditions can lower the rate of increase in CPs content.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Engineering, Environmental
Yalan Liu, Hui Zhang, Yang Ding, Nan Hu, Dexin Ding
Summary: This article investigates the use of carboxy methyl cellulose (CMC) to stabilize nano zero-valent iron (nZVI) and tests its dispersal and antioxidizing properties. The results show that CMC-nZVI has excellent dispersal and resistance to oxidation compared to nZVI. Further experiments demonstrate that CMC-nZVI has great potential for the removal of U(vi) under acid conditions.
ENVIRONMENTAL SCIENCE-WATER RESEARCH & TECHNOLOGY
(2023)
Article
Environmental Sciences
Yi Wang, Si Chen, Chaoyi Deng, Xiaoxia Shi, Keni Cota-Ruiz, Jason C. White, Lijuan Zhao, Jorge L. Gardea-Torresdey
Summary: Nanoscale zero-valent iron (nZVI) has been widely used to degrade organic pollutants in the environment. However, the potential risks of nZVI on crop species remain poorly understood. This study found that exposure to nZVI affected root elongation, pigment levels, lipid peroxidation, and polyphenolic levels in maize plants. Metabolomics analysis revealed metabolic pathway disturbances and changes in antioxidant levels in response to different nZVI concentrations, suggesting potential risks to crop health.
Article
Environmental Sciences
Promise Chima Ubah, Arezoo Fereidonian Dashti, Mardiana Saaid, Saifullahi Shehu Imam, Rohana Adnan
Summary: The purpose of this research was to synthesize environmentally friendly nanosorbents for the adsorption of diesel range organics (DRO) from contaminated water. The study determined the optimal conditions for synthesizing the nanosorbents and characterized their properties. The results showed that the synthesized nanosorbents were effective in removing DRO from water.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Engineering, Environmental
Miroslav Brumovsky, Jana Oborna, Vesna Micic, Ondrej Malina, Josef Kaslik, Daniel Tunega, Miroslav Kolos, Thilo Hofmann, Frantisek Karlicky, Jan Filip
Summary: The article discusses the significant enhancement in reactivity and corrosion resistance of zerovalent iron nanoparticles (nZVI) through nitriding. The study demonstrates the outstanding catalytic performance of iron nitrides (FexN) in various applications and their potential as a tool for trichloroethylene (TCE) dechlorination. The research findings provide valuable insights into the application of nitriding nanoparticles in environmental remediation.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Nanoscience & Nanotechnology
Tao Hu, Tingting Liu, Caiyun Xu, Mingxi Liu, Shenghu Zhou
Summary: This study utilized ditopic bis-terpyridine-containing metallopolymers as templates to synthesize metal nanoparticle-encapsulated nanoreactors for the first time. The prepared Pd NP-encapsulated silica nanotubes exhibited enhanced catalytic performance and stability for hydrodechlorinations of various chlorophenols.
ACS APPLIED NANO MATERIALS
(2021)
Article
Engineering, Environmental
Yi-Hao Luo, Yuhang Cai, Xiangxing Long, Dandan Zhou, Chen Zhou, Bruce E. Rittmann
Summary: This study demonstrates the catalytic hydrodechlorination and hydrosaturation of chlorophenols using Pd0 nanoparticles on H2-transfer membranes. The morphology and size of Pd0 particles are crucial for controlling catalytic activity and selectivity. The results show that Pd0NPs can achieve high selectivity for chlorophenol hydrogenation under ambient conditions.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Engineering, Environmental
Min Long, Xiangxing Long, Chen-Wei Zheng, Yi-Hao Luo, Chen Zhou, Bruce E. Rittmann
Summary: The efficient and complete remediation of para-chlorophenol (4-CP) and co-contaminating nitrate can be achieved through the combined action of palladium nanoparticles (PdNPs) catalysis and biodegradation in a biofilm.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Weiyu Liang, Yihao Shen, Chen Xu, Dongqing Cai, Dongfang Wang, Kailun Luo, Xuechun Shao, Zhihua Qiao, Wei Zhang, Cheng Peng
Summary: A novel composite material was prepared for the removal of Cr and Cd from water and soil. The results showed that the composite material had high adsorption capacity and stability, and could simultaneously remove Cr and Cd. Cations promoted the adsorption, while anions and humic acid inhibited the adsorption.
ENVIRONMENTAL SCIENCE-NANO
(2022)
Article
Engineering, Environmental
Shichao Cai, Bo Chen, Xiaojiang Qiu, Jiamei Li, Paul G. Tratnyek, Feng He
Summary: Sulfidation of microscale ZVI using elemental sulfur as a reactant can achieve high efficiency in contaminant removal, with higher sulfidation efficiency compared to traditional sulfidation agents. The sulfidated mZVI has shown significantly enhanced reactivity and electron efficiency when reacting with trichloroethylene, making it a promising product for engineering applications.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Wei Xiang, Mingjie Huang, Xiaohui Wu, Fugang Zhang, Dan Li, Tao Zhou
Summary: This study demonstrates the amplification effect of magnetic field on the hydroxylamine-promoted zero valent iron/H2O2 Fenton-like system, providing a green and energy-efficient method to improve the effectiveness of ZVI-based Fenton-like technologies at weak-acidic circumstances.
CHINESE CHEMICAL LETTERS
(2022)
Article
Engineering, Environmental
Mingjie Huang, Sisi Peng, Wei Xiang, Chen Wang, Xiaohui Wu, Juan Mao, Tao Zhou
Summary: The study reveals how the strong metal-support interaction between carbon nanotubes and Mn0.65Fe2.35O4 boosts peroxymonosulfate activation for rapid degradation of sulfamethoxazole. The synergy induced surface hydroxyl groups and highly hydrophobic CNTs facilitate rapid in situ interfacial degradation of SMX. Furthermore, the SMSI enables accelerated redox cycle rate of Mn species by electron-rich CNTs, resulting in efficient PMS activation.
CHEMICAL ENGINEERING JOURNAL
(2022)
Review
Engineering, Environmental
Zheng-Yi Choong, Kun-Yi Andrew Lin, Grzegorz Lisak, Teik-Thye Lim, Wen-Da Oh
Summary: This review provides an overview on the development of multi-heteroatom-doped carbocatalyst for persulfate activation, evaluating the potential interactions and summarizing the performance for pollutant removal. The preparation strategies, characterization techniques, and prospects for further research are also discussed.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Chemistry, Physical
Dara Khairunnisa Binte Mohamed, Andrei Veksha, Quan Luu Manh Ha, Teik-Thye Lim, Grzegorz Lisak
Summary: Ni catalysts are active in tar reforming, but they can be deactivated in the presence of syngas impurities. Pre-reduction of catalysts enhances their stability in the presence of impurities, but higher reduction temperatures can result in structural changes in the support material.
APPLIED CATALYSIS A-GENERAL
(2022)
Article
Energy & Fuels
Ya Zhao, Guicai Liu, Jijiang Huang, Andrei Veksha, Xinyi Wu, Apostolos Giannis, Teik Thye Lim, Grzegorz Lisak
Summary: A highly-active sorbent based on alumina has been synthesized for simultaneous removal of alkali metals and HCl from syngas. The sorbent showed the highest removal efficiency compared to other sorbents. Physical sorption governed the removal of alkali metals, while chemical sorption governed the removal of HCl. The physicochemical adsorption interactions between the sorbent and alkali metals and HCl contributed to their simultaneous removal.
Article
Engineering, Environmental
Arvin Liangdy, Wen Jie Lee, Panyawut Tonanon, Richard David Webster, Shane Allen Snyder, Teik-Thye Lim
Summary: A catalytic ceramic membrane (CCM) impregnated with Co-Mn-oxide via citrate sol-gel method was used to activate peroxymonosulfate (PMS) and degrade sulfamethoxazole (SMX). The Co-Mn bimetallic oxides exhibited higher catalytic activity compared to their single oxides due to the synergistic effect between the two cations. Optimal performance of the CCM/PMS process was achieved by controlling catalyst loading, oxidant dosage, and pollutant concentration.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Thermodynamics
Guicai Liu, Ya Zhao, Stephan Heberlein, Andrei Veksha, Apostolos Giannis, Wei Ping Chan, Teik Thye Lim, Grzegorz Lisak
Summary: This study compared the co-production of H-2 and power from biomass sorption enhanced gasification and sorption enhanced chemical looping gasification under autothermal conditions. The results showed that sorption enhanced chemical looping gasification achieved higher energy efficiency than sorption enhanced gasification.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Engineering, Environmental
Lek Hong Lim, Preston Tan, Wei Ping Chan, Andrei Veksha, Teik-Thye Lim, Grzegorz Lisak, Wen Liu
Summary: Waste-to-Energy through MSW incineration is an effective waste management strategy, but it releases CO2 and produces ash. This study explores the use of ash-derived sorbents for CO2 capture. The analysis shows that the addition of certain fuels increases the cost of electricity, but also reduces CO2 emissions. Optimizing energy-intensive processes and policy support are important for further improvement and adoption of negative emission technologies.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Satya Brat Tiwari, Thomas J. N. Hooper, Andrei Veksha, Wei Ping Chan, Xunchang Fei, Wen Liu, Grzegorz Lisak, Teik-Thye Lim
Summary: This study investigated the leaching of phosphorus from sewage sludge (SS) using alkaline treatment, with the addition of alum sludge (AS) and acidic pretreatment. The results showed that the addition of AS improved the recovery efficiency of phosphorus during alkaline leaching, and acidic pretreatment prevented the loss of inorganic phosphorus. This method can be applied globally to improve phosphorus leaching efficiency from SS and achieve dual waste management.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Chat How Joewin Koh Yang, Guicai Liu, Wei Ping Chan, Ya Zhao, Mei Ping Vernette Chin, Wen Liu, Teik Thye Lim, Grzegorz Lisak
Summary: The utilization of ferric sludge as an oxygen carrier (OC) for chemical looping combustion (CLC) of municipal solid waste (MSW) syngas was explored. The performance of ferric sludge in CLC and simultaneous HCl removal was evaluated and compared with iron ore as a benchmarked OC. The results showed that ferric sludge performed better than iron ore in terms of syngas combustion efficiency and HCl removal. Temperature comparison revealed that ferric sludge performed better at lower CLC temperature. Agglomeration was observed when ferric sludge was used in extended CLC cycles, but it was reduced when inert alpha-Al2O3 support was used.
CHEMICAL ENGINEERING JOURNAL
(2023)
Review
Engineering, Environmental
Arvin Liangdy, Wen Jie Lee, Yueping Bao, Wen-Da Oh, Teik-Thye Lim
Summary: The hybrid catalytic oxidation and membrane filtration process is becoming a popular research topic for removing micropollutants in water. This review focuses on the use of metal oxide-functionalized catalytic ceramic membranes (CCMs) in sulfate radical-based hybrid processes. The fabrication methods of MeOx-CCMs and various characterization techniques are discussed. The importance of intrinsic catalytic and membrane properties in the hybrid process is emphasized, as well as the challenges in real water remediation.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Materials Science, Multidisciplinary
Boon Chong Ong, Zhong Chen, Teik-Thye Lim, ZhiLi Dong
Summary: In this study, an effective hole scavenger layer of polyoxometalates (POMs) with excellent redox properties and high durability is coated on titanium dioxide (TiO2) nanorods to enhance the photoelectrochemical (PEC) water oxidation activity. The Co-POMs layers on TiO2 can effectively retard the recombination of photoinduced electron-hole pairs by extracting and transporting the generated holes, resulting in improved overall PEC performance under neutral conditions. This work provides a facile and promising method for promoting PEC water oxidation by depositing Co-POMs layers on TiO2 nanorods.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Environmental Sciences
Wanyi Huang, Yixing Yuan, Dan Zhong, Peng Zhang, Arvin Liangdy, Teik-Thye Lim, Wencheng Ma, Yuan Yuan
Summary: We compared the elimination of 5-bromosalicylic acid (BSA) in goethite (alpha-FeOOH)/H2O2 and lepidocrocite (gamma-FeOOH)/H2O2 systems. BSA could be adsorbed on alpha- and gamma-FeOOH and effectively degraded after the addition of H2O2. The systems showed differences in adsorption kinetics and degradation mechanisms, with gamma-FeOOH having greater adsorption ability and alpha-FeOOH performing better in catalyzing the decomposition of H2O2.
Article
Engineering, Environmental
Amadu T. Bah, Ziyi Shen, Junna Yan, Feihu Li, Teik Thye Lim
Summary: By combining batch adsorption enrichment with struvite crystallization, we prepared ternary layered double hydroxides (LDHs) with P-preferring elements and evaluated their performance in recovering P from water. The LDHs demonstrated high P adsorption capacities and the recycling tests showed good enrichment for P. Moreover, more than 96% of phosphorus in the P-enriched eluates can be efficiently reclaimed via struvite crystallization. These findings demonstrate the feasibility of combining adsorption enrichment with struvite crystallization for P recovery.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Engineering, Environmental
Wei Xiang, Xiaoli Zou, Mingjie Huang, Xiaohui Wu, Tao Zhou
Summary: This study investigates the interference of dissolved organic matters (DOMs) in advanced oxidation processes (AOPs) treatment of pharmaceuticals in reverse osmosis concentrates (ROC). The results show that fulvic acid (FA) and humic acid (HA) have medium to strong inhibition effects. By increasing the dosages of the agents, all the DOMs can be efficiently decomposed into smaller molecules.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(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)
