Article
Polymer Science
Shang-Lin Yeh, Piyush Deval, Wei-Bor Tsai
Summary: In this study, a simple and universal technique using pyrogallol-assisted immobilization of poly(ethylene glycol) (PEG) was introduced to deposit a thin antifouling layer on biomaterials. By controlling the amounts of PG and PEG and the coating time, the PG/PEG coating was able to reduce more than 99% of cell adhesion and protein adsorption, while providing a transparent and robust coating that can survive sterilization conditions. This technique has great potential for applications in transparent antifouling coatings for biomedical devices.
Article
Chemistry, Analytical
Ziheng Hu, Ruifeng Zhu, Gabriela Figueroa-Miranda, Lei Zhou, Lingyan Feng, Andreas Offenhaeusser, Dirk Mayer
Summary: This study presents an electrochemical aptasensor for highly sensitive and selective serotonin (ST) detection, based on truncated DNA aptamers and a polyethylene glycol (PEG) molecule-functionalized sensing interface. The aptasensor shows improved sensitivity and enhanced antifouling ability due to the small size and stable structure of the truncated aptamers, as well as the blocking effect of PEG molecules. The sensor exhibits a wide detection range and low limit of detection, and also demonstrates high selectivity and stability in detecting ST in human serum and artificial cerebrospinal fluid (aCSF).
Article
Chemistry, Multidisciplinary
Jhoan Toro-Mendoza, Lucia Maio, Marta Gallego, Ferdinand Otto, Florian Schulz, Wolfgang J. Parak, Carlos Sanchez-Cano, Ivan Coluzza
Summary: Nanoparticles and other nano-materials have potential as nanodrugs or nanomedical devices, but their therapeutic response can be significantly affected by protein adsorption. By combining experimental and computational approaches, we have developed nanoparticles with polyethylene glycol (PEG) coatings that mimic the surface charge distribution of proteins in blood, showing low aggregation under normal blood conditions.
Article
Engineering, Environmental
Abdullah M. Aldawsari, Hassan M. A. Hassan, Abdulelah Nashmi Alrashidi, Ibrahim Hotan Alsohaimi, Hotan Alsohaimi, Shaima M. N. Moustafa, Hany M. Youssef, Raghda Hamdi, Maged A. Azzam
Summary: This study successfully prepared PVDF-co-PAAm/MGO nanocomposite membrane using a nonsolvent induced phase separation method, which exhibited strong ultrafiltration morphology, improved water flux and rejection, as well as excellent antibacterial activity.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Environmental Sciences
Maheswari Purushothaman, Adhikesavan Harikrishnan, P. Senthil Kumar, Jenet George, Gayathri Rangasamy, Vinoth Kumar Vaidyanathan
Summary: Composite polymeric membranes with enhanced anti-fouling properties and antimicrobial activities were prepared using the phase inversion technique with poly (ether-ether-sulfone) (PEES)/polyethylene glycol and n-ZnO. The addition of PEG and n-ZnO increased the surface hydrophilicity and anti-fouling properties of the membranes, leading to improved permeate flux and antibacterial capabilities. The fabricated membrane also showed significant rejection of metal ions and proteins, making it suitable for water purification.
ENVIRONMENTAL RESEARCH
(2023)
Article
Polymer Science
Mona Ebadi, Ahmad Rifqi Md Zain, Tengku Hasnan Tengku Abdul Aziz, Hossein Mohammadi, Clarence Augustine T. H. Tee, Muhammad Rahimi Yusop
Summary: Coated iron oxide nanoparticles were synthesized for the delivery of sorafenib and their effects on cancer cells were investigated. The study demonstrated that the use of polyethylene glycol-coated iron oxide nanoparticles could enhance the effect of sorafenib on cancer cells.
Article
Chemistry, Physical
Wenshuai Yang, Ziqian Zhao, Mingfei Pan, Lu Gong, Feiyi Wua, Charley Huang, Xiaogang Wang, Jianmei Wang, Hongbo Zeng
Summary: This study hypothesized that PEG polymer can be robustly attached onto substrates with the assistance of a bio-glue layer, and proposed a coating strategy for fabricating stable coatings with outstanding antifouling properties in various environmental engineering applications. Experimental results showed that the PEGDE/LP coating exhibited excellent stability and superior antifouling properties, suitable for separating oil-in-water emulsions.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Physical
Apurav Guleria, V. V. Gandhi, Amit Kunwar, Suman Neogy, Anil K. Debnath, Soumyakanti Adhikari
Summary: Blue photoluminescent silicon oxide nanocomposites with in situ PEGylation were prepared using an electron beam-assisted approach. The nanocomposites showed excitation-wavelength-dependent photoluminescence and highly sensitive and selective detection of Cr(VI).
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Chemistry, Physical
Soheyla Karimi, Hassan Namazi
Summary: The study successfully fabricated a triazine dendrimer-functionalized graphene oxide nanocarrier for drug delivery systems with potential applications in cancer treatment. The results showed that the nanocarrier exhibited pH-responsive drug release behavior, excellent biocompatibility, and higher apoptotic effects on breast cancer cells.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Biochemistry & Molecular Biology
Roxana Cristina Popescu, Diana Iulia Savu, Miriam Bierbaum, Adriana Grbenicek, Frank Schneider, Hiltraud Hosser, Bogdan Stefan Vasile, Ecaterina Andronescu, Frederik Wenz, Frank A. Giordano, Carsten Herskind, Marlon R. Veldwijk
Summary: The study demonstrated that polyethylene glycol-encapsulated iron oxide nanoparticles showed potential for enhancing the intracellular delivery of a chemotherapeutic drug to improve the cytotoxic effects of ionizing radiation.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Polymer Science
Elisa Guazzelli, Niccolo Lusiani, Gianfranca Monni, Matteo Oliva, Chiara Pelosi, Frederik R. Wurm, Carlo Pretti, Elisa Martinelli
Summary: Poly(ethyl ethylene phosphonate)-based methacrylic copolymers containing polysiloxane methacrylate (SiMA) co-units were proposed as surface-active additives for novel PDMS-based coatings for marine antifouling applications. The hydrolysis of these polymers in marine-like conditions and their potential as erodible films were studied. All films underwent surface reconstruction upon immersion in water, becoming more hydrophilic, with different hydrophilic units affecting the extent of surface modification. Films with 10 wt% of the PEtEP-based copolymer showed maximized Ficopomatus enigmaticus release and performed better in bioassays than those with 20 wt% loading, independent of copolymer nature.
Article
Chemistry, Physical
Susan Davari, Mohammadreza Omidkhah, Simin Salari
Summary: In this study, polydopamine (PDA) was used to enhance the adhesion of titanium dioxide (TiO2) nanoparticles (NPs) onto polyethersulfone (PES) ultrafiltration membrane, leading to improved stability and antifouling properties. However, the coatings also resulted in decreased flux due to increased hydraulic resistance.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Chemistry, Analytical
Dawei Fan, Jing Luo, Zhengxing Gong, Huan Wang, Hongmin Ma, Dan Wu, Qin Wei, Huangxian Ju
Summary: In this paper, a novel photoelectrochemical immunosensor based on a ZnO/CdSe semiconductor composite material was developed for the super-sensitive and quantitative detection of neuron-specific enolase (NSE). The antifouling interface composed of polyacrylic acid (PAA) and polyethylene glycol (PEG) effectively prevented non-specific protein adsorption. Ascorbic acid (AA) served as an electron donor, enhancing the stability and intensity of photocurrent by scavenging photogenerated holes. The PEC antifouling immunosensor exhibited a wide linear range (0.10 pg mL-1-100 ng mL-1) and a low detection limit (34 fg mL-1), making it a potential tool for clinical diagnosis of small cell lung cancer.
ANALYTICA CHIMICA ACTA
(2023)
Article
Engineering, Biomedical
Eoin P. McKiernan, Cara Moloney, Tista Roy Chaudhuri, Shane Clerkin, Kevin Behan, Robert M. Straubinger, John Crean, Dermot F. Brougham
Summary: This study presents a successful grafting approach using a catechol-derived compound to bind polyethylene glycol (PEG) onto multicoe magnetic iron oxide nanoparticles (NFs), resulting in long-term colloidal stability in buffers and complex media. The study confirms the dominant role of internal magnetisation dynamics in providing high relaxivity and hyperthermic efficiency, and shows that these properties are unaffected by PEG molecular weight or corona formation in biological environments.
ACTA BIOMATERIALIA
(2022)
Article
Chemistry, Inorganic & Nuclear
Goutam Singh Ningombam, Baskar Srinivasan, Amrutha H. Chidananda, Subbaraya Narayana Kalkura, Yogendra Sharma, Nongmaithem Rajmuhon Singh
Summary: Magnetic MnxFe3-xO4 nanoparticles and polymer coated magnetic-luminescent MnxFe3-xO4@(Y,Dy/Eu)VO4 nanocomposites were synthesized and compared for their heat generation efficiency and biocompatibility. Doping Mn2+ increased magnetization and heat generation capability. The nanocomposites exhibited brilliant color emission under UV excitation and excellent biocompatibility with HeLa cell lines.
DALTON TRANSACTIONS
(2022)
Article
Environmental Sciences
Oscar Munoz-Blandon, Margarita Ramirez-Carmona, Beatriz Cuartas-Uribe, Jose Antonio Mendoza-Roca
Summary: As natural fibers, low-cost biosorbents are effective and clean tools for removing textile dyes from wastewater. This research evaluated the removal ability of Reactive Black 5 using original and enzyme-modified natural fibers. The study found that enzyme modification improved the dye removal capacity by changing the charge distribution on the fiber surface.
Article
Environmental Sciences
C. Bretas Alvim, S. Navajas Valiente, M. A. Bes-Pia, J. A Mendoza-Roca
Summary: This study investigates the extraction of anthropogenic microparticles from different treated sludges and finds that a higher density solution leads to better recovery of microparticles. Polyethylene, polypropylene, and copolymer ethylene-ethyl-acrylate are the main microplastic fragments identified in the sludge samples. The centrifuge effluent shows the presence of anthropogenic microparticles.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Environmental Sciences
Vilma Fernandez-Medrano, Beatriz Cuartas-Uribe, Maria-Amparo Bes-Pia, Jose-Antonio Mendoza-Roca
Summary: Tanneries produce wastewater with high concentrations of suspended solids, organic matter, and salts. Treatment and reuse of these effluents are important for water conservation and cost-saving. This study tested nanofiltration and reverse osmosis membranes and found that reverse osmosis may be the most feasible technique for water reuse in the tannery industry.
Article
Engineering, Chemical
Magdalena Cifuentes-Cabezas, Carmen Maria Sanchez-Arevalo, Jose Antonio Mendoza- Roca, Maria Cinta Vincent-Vela, Silvia Alvarez-Blanco
Summary: An adsorption/desorption process using Purolite non-ionic resins was investigated to recover phenolic compounds from agroindustry wastewater. The optimal resin concentration and desorption solvent for maximum recovery were determined, and the adsorption mechanisms were characterized using kinetic and isotherm models. The MN200 resin was found to be the most effective adsorbent, achieving a 91% recovery of phenolic compounds.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Environmental
Magdalena Cifuentes-Cabezas, Claudia F. Galinha, Joao G. Crespo, Maria Cinta Vincent-Vela, Jose Antonio Mendoza-Roca, Silvia Alvarez-Blanco
Summary: The presented work aims to solve the problem of large volumes of oil mill wastewater and proposes nanofiltration as a possible second stage treatment. Different membranes were tested and it was found that the NF270 membrane under specific conditions showed the best concentration of phenolic compounds with high permeate flux and low fouling. Furthermore, spectroscopic techniques were used to study membrane fouling and effectiveness of cleaning protocols.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Magdalena Cifuentes-Cabezas, Jose Antonio Mendoza-Roca, Maria Cinta Vincent-Vela, Silvia Alvarez-Blanco
Summary: This study focuses on the valorization of concentrates obtained from membrane processes for the purification of olive oil washing wastewater. The combination of adsorption/desorption process and biological treatment successfully recovered phenolic compounds and eliminated organic matter, providing a solution for circular economy in olive oil processing wastewater treatment.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Food Science & Technology
Magdalena Cifuentes-Cabezas, Jose Luis Bohorquez-Zurita, Sandra Gil-Herrero, Maria Cinta Vincent-Vela, Jose Antonio Mendoza-Roca, Silvia Alvarez-Blanco
Summary: This study focused on the effect of transmembrane pressure and cross flow velocity on the permeate flux of different ultrafiltration membranes for the treatment of olive mill wastewater. Semi-empirical models, statistical methods, and machine learning techniques were used. The series resistance model and combined model accurately represented the experimental data, indicating the contributions of cake layer formation and pore blockage to membrane fouling. Inorganic membranes showed a higher tendency for irreversible fouling. Response surface methodology and artificial neural networks were effective in analyzing the significant variables and their impacts. The study provides a better understanding of the data modeling of different ultrafiltration membranes for olive mill wastewater treatment.
FOOD AND BIOPROCESS TECHNOLOGY
(2023)
Article
Environmental Sciences
C. Bretas Alvim, E. Ferrer-Polonio, M. A. Bes-Pia, J. A. Mendoza-Roca, J. Fernandez-Navarro, J. L. Alonso-Molina, I. Amoros-Munoz
Summary: The effect of 100 nm polystyrene nanoplastics on activated sludge was evaluated in this study. The results showed that these nanoplastics did not significantly affect the performance of the wastewater treatment system, but they may have inhibitory effects on certain bacteria and long-term nitrification.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Biotechnology & Applied Microbiology
Magdalena Cifuentes-Cabezas, Alessio Pavani, Maria Cinta Vincent-Vela, Jose Antonio Mendoza-Roca, Silvia Alvarez-Blanco
Summary: The olive industry generates a large volume of oil mill wastewater (OMW) and table olive wastewater (TOW), which have high concentrations of organic matter, phenolic compounds, and conductivity. Proper management of these wastewaters is crucial due to their toxic impacts on the environment. Forward osmosis (FO) process was tested to concentrate phenolic compounds for recovery, and two membranes (OsmoF2OTM and HFFO.6) were evaluated. Both membranes demonstrated effective concentration of phenolic compounds with acceptable volume reduction. FO shows promise for concentrating phenolic compounds from OOWW and diluting FTOP simultaneously.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2023)
Article
Education & Educational Research
Maria-Amparo Bes-Pia, Jose-Antonio Mendoza-Roca, Eva Ferrer-Polonio, Alicia Iborra-Clar, Elena Zuriaga-Agusti, Maria-Jose Lujan-Facundo
Summary: This paper discusses the design and implementation of an educational innovation that integrates two courses and utilizes project-based learning methodology. The innovation successfully helps students acquire transversal competences and improve various skills. The positive results highlight the importance of lecturer feedback in the organization and development of the activity. The learning outcome shows accomplished knowledge integration, with project marks ranging from 8.5 to 10 on a 0-10 scale.
EDUCATION SCIENCES
(2023)
Article
Environmental Sciences
Magdalena Cifuentes-Cabezas, Maria-Jose Lujan-Facunda, Beatriz Cuartas-Uribe, Alicia Iborra-Clar, Jose-Antonio Mendoza-Roca
Summary: In urban wastewater treatment, sludge is treated by anaerobic digestion and then dehydrated by centrifuges. The liquid fraction obtained is currently recirculated at the treatment plant, but it contains valuable nutrients such as nitrogen and phosphorus. The recovery of these nutrients could be used for fertilizer production or other industrial applications.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Engineering, Environmental
M. J. Lujan-Facundo, J. A. Mendoza-Roca, A. Bes-Pia, E. Zuriaga-Agusti, Sergio Mestre, Maria-Dolores Palacios
Summary: The study focuses on the fabrication and validation of eco-friendly ceramic membranes using low-cost raw materials and digital INKJET printing techniques in a membrane bioreactor (MBR) for treating municipal wastewater. The performance of three different grammatges of the ceramic membranes was evaluated in terms of transmembrane pressure, permeate quality, and mixed liquor characteristics. The selected membrane demonstrated low transmembrane pressure, high COD removal percentage, and met the water quality standards for reuse in non-potable applications at pilot plant scale.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2023)
Article
Engineering, Environmental
C. Bretas Alvim, M. A. Bes-Pia, J. A. Mendoza-Roca, J. L. Alonso-Molina
Summary: Traditional drinking water treatment plants are not efficient in removing microplastics from drinking water, resulting in the presence of microfibers in the final drinking water. This study investigated the presence of microfibers in a DWTP in Spain and found that it was capable of removing 86% of microfibers from raw water. However, even with this high removal rate, a significant amount of microfibers was still present in the drinking water. Nile Red was used to stain and identify the microfibers, and it was observed that their fluorescence could be related to degradation and adsorption of organic and inorganic materials on their surfaces.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Biotechnology & Applied Microbiology
Magdalena Cifuentes-Cabezas, Maria Cinta Vincent-Velaa, Jose Antonio Mendoza-Roca, Silvia Alvarez-Blanco
Summary: Olive oil production generates wastewater containing phenolic compounds with antioxidant characteristics. Ultrafiltration treatment effectively removes color, turbidity, and organic pollutants from the wastewater, while having little impact on the recovery of phenolic compounds.
FOOD AND BIOPRODUCTS PROCESSING
(2022)
Article
Engineering, Environmental
E. Ferrer-Polonio, J. Fernandez-Navarro, J. A. Mendoza-Roca, A. Bes-Pia, J. L. Alonso-Molina
Summary: This study evaluates the impact of adding 4-nonylphenol (4-NP) to wastewater on the activated sludge process. The results show that 4-NP has a negative effect on COD removal efficiency and certain microbial communities, while maintaining a removal efficiency above 90%.
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)
