Article
Chemistry, Multidisciplinary
Lior Snarski, Idan Biran, Tatyana Bendikov, Iddo Pinkas, Mark A. Iron, Ifat Kaplan-Ashiri, Haim Weissman, Boris Rybtchinski
Summary: In this study, single-wall carbon nanotubes (SWCNTs) were efficiently exfoliated and functionalized using a common dye molecule, resulting in highly mechanical robust and electrically conductive SWCNT materials. Flexible transparent conductive electrodes based on these materials showed excellent optoelectronic performance suitable for touch screens and LEDs.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Physical
Ahmed O. Rashed, Chi Huynh, Andrea Merenda, Si Qin, Ken Aldren S. Usman, Abu Sadek, Lingxue Kong, Takeshi Kondo, Ludovic F. Dumee, Joselito M. Razal
Summary: This study presents a stimuli-responsive membrane reactor for simultaneous separation and degradation of organic contaminants through photo or electro stimuli. By assembling carbon nanotubes (CNT) with conformal nanoscale SnO2 coatings, ultrathin and flexible ultrafiltration membranes were fabricated. The membranes exhibited high water permeance and faster reaction kinetics, making them suitable for cost-effective water purification.
Article
Engineering, Chemical
Sudesh Yadav, Ibrar Ibrar, Ali Altaee, Akshaya K. Samal, Elika Karbassiyazdi, John Zhou, Pietro Bartocci
Summary: This study focuses on enhancing the selectivity and permeability of two-dimensional graphene oxide (GO) membranes using one-dimensional carbon nanotubes (CNT) and polyvinyl alcohol (PVA). By intercalating CNT and cross-linking with GO and PVA, the separation performance of the membranes is significantly improved. The membranes exhibited high rejection rates and permeate rates after specific treatments and annealing. These membranes show great potential for practical water separation applications.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Chemical
Qikun Wang, Junqing Sun, Wenjing Xue, Guanglei Zhao, Wande Ding, Kefeng Zhang, Shan Wang, Yunwei Li
Summary: Due to their remarkable mechanical, thermal and chemical properties, carbon nanotubes (CNTs) have gained significant attention in improving the performance of thin-film composite membranes. However, few studies have discussed the contribution of CNT nanochannels to enhanced permeability. In this study, carboxylated-SWCNTs were inserted into DOPC liposomes to create CNT-DOPC liposomes, which functioned as water channels. These CNT-DOPC liposomes were then incorporated into a polyamide layer, resulting in thin-film nanocomposite membranes. The results showed that CNT-liposomes had a 10-fold higher water permeability compared to pure DOPC-liposomes, leading to a 71.4% enhancement in water flux compared to TFC membranes and a 25.6% increase (induced by CNT nanochannels) compared to DOPC-liposomes incorporated membranes.
Article
Engineering, Chemical
Yi Yang, Xinfei Fan, Yuanlu Xu, Chengwen Song, Zonglin Pan, Yanming Liu
Summary: In this study, an all-in-one conductive hollow fiber membrane was fabricated, which exhibited high distillate flux and low energy requirement, as well as superior resistance to salt.
Article
Engineering, Chemical
Yong Liu, Ziqiang Tong, Huiming Zhu, Xiaoying Zhao, Jiayan Du, Baoquan Zhang
Summary: Novel polyamide composite membranes were successfully prepared by conducting interfacial polymerization on modified carbon nanotube-deposited polyacrylonitrile ultrafiltration membranes, exhibiting high hydrophilicity and dense crumpled structure. The membranes showed excellent desalination performance and great application potential in seawater desalination.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Xilong Guo, Jiaxin Song, Shanling Wang, Li Lei, Omololu Odunmbaku, Ayoub Taallah, Yi He, Aiqun Gu, Filippo S. Boi
Summary: The recent observations of superconductive-ordering in carbon-based systems consisting of rhombohedral stacking-faults, trilayer graphene (ABC-stacks) or dislocation-rich interfaces (pyrolytic graphite) have attracted significant attention. In this study, an unusual nucleation of rhombohedral stacking-faults in low-dimensional systems comprising of multiwall carbon nanotube (CNT) buckypapers was reported. The presence of sulfur doping resulted in a broad-band at the Raman shift from 1800 to 2000 cm(-1), indicating contributions arising from disorder-rich regions with rhombohedral stacking-order (ABC-stacks). These observations were further supported by X-ray diffraction and Rietveld refinements.
DIAMOND AND RELATED MATERIALS
(2024)
Article
Chemistry, Physical
Filiz Ugur Nigiz, Betul Karakoca
Summary: This study investigates the use of Halloysite as a filler in a polymer composite membrane for seawater purification. The results show that the addition of Halloysite significantly improves the hydrophilicity, stability, mechanical strength, and desalination performance of the membrane.
APPLIED CLAY SCIENCE
(2023)
Article
Engineering, Chemical
Jeong Hoon Lee, Eun-Tae Yun, So-Young Ham, Han-Shin Kim, Peng-Fei Sun, Hee-Deung Park
Summary: Biofouling is a significant issue in membrane-based filtration processes. Conductive membranes, such as carbon nanotube/graphene membranes, show promise in fouling mitigation. This study demonstrates that a high-stability CNT/graphene membrane can achieve efficient water flux recovery by combining physical and chemical/biological cleaning methods.
Article
Materials Science, Multidisciplinary
Xilong Guo, Shanling Wang, Aiqun Gu, Yi He, Shuping Zheng, Jian Guo, Filippo S. Boi
Summary: The stabilization dynamics of gamma-Fe inside carbon nanotubes films were investigated. It was found that slow cooling resulted in a maximum relative abundance of 26% of γ-Fe, while rapid cooling enhanced the relative abundance to 30%. The coercive field value was found to depend on both cooling and flow rate parameters. Magnetometry characterization confirmed the existence of magnetic coupling within the encapsulated nanocrystals.
DIAMOND AND RELATED MATERIALS
(2023)
Article
Engineering, Chemical
Zeinab Ahmadi Pouya, Maryam Ahmadzadeh Tofighy, Toraj Mohammadi
Summary: In this study, oleic acid was successfully used to functionalize carbon nanotubes, resulting in a novel composite membrane for vacuum membrane distillation process. The fabricated membrane showed improved performance compared to carboxylated CNTs composite membrane. Optimization of operating parameters using Taguchi method can further enhance membrane performance.
Article
Nanoscience & Nanotechnology
Ruth Sang Jones, Sergio Gonzalez-Munoz, Ian Griffiths, Philip Holdway, Koen Evers, Santamon Luanwuthi, Barbara M. Maciejewska, Oleg Kolosov, Nicole Grobert
Summary: This study reports the synthesis of macroscopic sheet assemblies called buckypapers composed of carbon/boron nitride core-shell heteronanotubes (MWCNT@BNNT) or boron nitride nanotubes (BNNTs). The MWCNT@BNNTs were synthesized using Atmospheric Pressure Chemical Vapor Deposition (APCVD) and a safe h-BN precursor ammonia borane. These buckypapers showed improved thermal conductivity compared to control samples, as measured using a novel technique called piercing SThM (pSThM). The results of this work provide valuable insights into the thermal properties of MWCNT@BNNT buckypapers and BNNT buckypapers synthesized by low-energy techniques.
ACS APPLIED NANO MATERIALS
(2023)
Article
Engineering, Environmental
Soheil Hadadpour, Iman Tavakol, Zahra Shabani, Toraj Mohammadi, Maryam Ahmadzadeh Tofighy, Soleyman Sahebi
Summary: In this study, charcoal-based carbon nanomaterial was incorporated into thin film composite membranes to enhance forward osmosis performance. The addition of CNM led to improved water flux and reduced structural parameter of the membranes. The membrane with 0.5 wt% CNM showed the best performance with significantly increased water flux in both FO and PRO modes.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Engineering, Chemical
Giuseppe Genduso, Anton Missinne, Zain Ali, Wojciech Ogieglo, Bart Van der Bruggen, Ingo Pinnau
Summary: The study investigated the pervaporative desalination of synthetic seawater and brines using a PDMS thin-film composite membrane, demonstrating high water permeance and exceptional NaCl rejection. The PDMS composite membrane showed outstanding pure water flux even at high temperatures and with salt presence in the feed water, performing among the best compared with hydrophilic TFC polymer membranes reported previously.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Biochemistry & Molecular Biology
Vasuphat Tunsound, Tharnthip Krasian, Donraporn Daranarong, Kittisak Jantanasakulwong, Winita Punyodom, Montira Sriyai, Runglawan Somsunan, Kiattikhun Manokruang, Pornchai Rachtanapun, Pratchaya Tipduangta, Yottha Srithep, Sittipong Amnuaypanich, Alan B. Dalton, Patnarin Worajittiphon
Summary: This study demonstrates the fabrication of electrospun composite membrane evaporators based on ethyl cellulose (EC) for steam generation and solar desalination. The composite membranes showed high evaporation rates and efficiency under natural sunlight, and maintained a relatively high evaporation rate for concentrated saline water. The composite membranes exhibited excellent reusability and potential for solar-driven freshwater generation with reduced cation concentration.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Review
Environmental Sciences
Luong N. Nguyen, Minh T. Vu, Hang P. Vu, Md. Abu Hasan Johir, Leen Labeeuw, Peter J. Ralph, T. M. I. Mahlia, Ashok Pandey, Ranjna Sirohi, Long D. Nghiem
Summary: This paper reviews the current state of microalgal culture development for carbon capture and utilization (CCU) and highlights its potential contribution to addressing climate change challenges. Innovative system designs are crucial to achieve large-scale CO2 capture by microalgae, and downstream processes of microalgal culture are important for the overall success of microalgae-based CCU.
CRITICAL REVIEWS IN ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2023)
Article
Metallurgy & Metallurgical Engineering
Hassan M. Hassan, Ibrahim H. Alsohaimi, Mohamed R. El-Aassar, Mohammed A. El-Hashemy, Thamer S. Alraddadid
Summary: This study revealed that NH2-MIL-101(Cr), an amine-functionalized chromium-based MOF (Cr(III)-MOF), is a potential corrosion inhibitor for mild steel in 1 m HCl solution.
ANTI-CORROSION METHODS AND MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Meshal Alzaid, Rakan Alanazi, Ibrahim Hotan Alsohaimi, W. S. Mohamed, N. M. A. Hadia, Mohammed Ezzeldien, Muhammad Zahir Iqbal
Summary: In this study, bimetallic sulfide was synthesized via hydrothermal technique and its performance was optimized. Ni0.50Mn0.50S showed the best performance for supercapattery application. A hybrid device of NiMnS//Activated carbon delivered a decent energy density of 45.7 Wh/kg and power density of 1700 W/kg, with exceptional cycling stability.
DIAMOND AND RELATED MATERIALS
(2023)
Review
Engineering, Environmental
Ting Zhou, Zehao Zhang, Huan Liu, Shiman Dong, Long D. Nghiem, Li Gao, Alex V. Chaves, Arash Zamyadi, Xuan Li, Qilin Wang
Summary: This review summarizes the occurrence, classification, emission sources, and environmental risk of pharmaceutical compounds in aqueous environments. The efficiency, mechanisms, and influencing factors for the removal of pharmaceutical compounds through microalgae-based technology are further discussed. Microalgae-based technology can mainly remove pharmaceutical compounds through bioadsorption, bioaccumulation, biodegradation, and photodegradation.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Environmental Sciences
Ibrahim Hotan Alsohaimi, Mosaed S. Alhumaimess, Meshal Alzaid, Amr A. Essawy, M. R. El-Aassar, Rasha M. K. Mohamed, Hassan M. A. Hassan
Summary: In this study, CdS quantum dots were successfully confined in a polysulfone membrane to create a photoactive membrane suitable for wastewater treatment under solar illumination. The CdS@PSM membranes were prepared using the nonsolvent induced phase separation approach. Optical measurements showed that 5 wt% loading resulted in the narrowest band gap (2.41 eV) with effective confinement of CdS quantum dots in the PS matrix. The addition of CdS QDs to PSM resulted in blue-shifted emission peaks and improved photodegradation efficiency for methylene blue.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Engineering, Chemical
Lisa Aditya, Hang P. Vu, Luong N. Nguyen, T. M. Indra Mahlia, Ngoc Bich Hoang, Long D. Nghiem
Summary: This study evaluates the performance of a ceramic microfiltration membrane for extracting clean water and pre-concentrating microalgae. The results show that membrane fouling is specific to each microalgae species, but can be efficiently mitigated by aeration and regular backwashing. C. vulgaris exhibited considerable membrane fouling over time, while Scenedesmus sp. showed negligible fouling. The ceramic microfiltration membrane can simultaneously enrich the microalgae solution and recycle permeated water for microalgae cultivation.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Engineering, Environmental
M. R. El-Aassar, Omar M. Ibrahim, Basma Mohamed Omar, Hazem T. Abd El-Hamid, Ibrahim Hotan Alsohaim, Hassan M. A. Hassan, Ibrahim O. Althobaiti, Mohamed Y. El-Sayed, Mohamed E. Goher, Hala Fakhry
Summary: In this study, cost-effective and eco-friendly hybrid beads of Poly (Acrylonitrile-co-Styrene/Pyrrole)@Poly Vinyl Pyrrolidone (Poly (AN-co-ST/Py)@PVP) were fabricated for Methylene Blue dye adsorption. The physico-chemical characterization of the fabricated beads was conducted through SEM, TGA, FTIR, NMR, and AFM. Optimal adsorption conditions were determined, and Langmuir isotherm and pseudo-second order kinetic models described the adsorption equilibrium and kinetics well. The fabricated beads exhibited great effectiveness in efficiently removing MB molecules from wastewater samples.
JOURNAL OF POLYMERS AND THE ENVIRONMENT
(2023)
Article
Chemistry, Analytical
Rasha M. K. Mohamed, Sabrein H. Mohamed, Aml M. Asran, Ibrahim H. Alsohaimi, Hassan M. A. Hassan, Hossieny Ibrahim
Summary: In this study, a novel ultrasensitive electrochemical sensing platform for lacidipine (LCDP) was developed using functionalized glassy carbon (FGC) microspheres combined with ceria nanoparticles (CeO2NPs@FGC). The CeO2NPs@FGC-MWE sensor exhibited high electro-catalytic activity towards LCDP oxidation and achieved quantitative detection using adsorptive anodic stripping square-wave voltammetry. The sensor showed good selectivity, reproducibility, antifouling activity, and long-term stability.
MICROCHEMICAL JOURNAL
(2023)
Article
Biochemistry & Molecular Biology
Hassan M. A. Hassan, Ibrahim H. Alsohaimi, Amr A. Essawy, Mohamed R. El-Aassar, Mohamed A. Betiha, Alhulw H. Alshammari, Shaimaa K. Mohamed
Summary: Tailoring high-efficiency photocatalytic composites is crucial. Incorporating Zn (II) ions into TNTs can enhance their absorption of visible light and improve the photocatalytic performance. The Zn-TNTs composite shows significant degradation of RhB under visible light illumination, with a degradation rate of around 95% achieved in 120 minutes. The efficient engagement of photoexcited electrons over photogenerated holes in the photodegradation mechanism is observed.
Article
Environmental Sciences
Bao-Trong Dang, Xuan-Thanh Bui, Thanh-Tin Nguyen, Huu Hao Ngo, Long D. Nghiem, Ky-Phuong-Ha Huynh, Thi-Kim-Quyen Vo, Thi-Dieu-Hien Vo, Chitsan Lin, Shiao-Shing Chen
Summary: Co-culture of microalgae-activated sludge has the potential to purify wastewater while reducing energy demand from aeration. This study used a mechanically stirred membrane photobioreactor to evaluate the impact of biomass retention time on treatment performance and membrane fouling. Results showed that the highest productivity was achieved at a biomass retention time of 7 days, with a lower retention time leading to increased fouling rates. The optimum biomass retention time of 7 days allowed for sufficient access to light and nutrient exchange for mutualistic interactions between microalgae and activated sludge.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Chemistry, Analytical
Rasha M. K. Mohamed, Sabrein H. Mohamed, Aml M. Asran, Ibrahim H. Alsohaimi, Hassan M. A. Hassan, Hossieny Ibrahim, Mohamed M. El-Wekil
Summary: A novel electrochemical sensing platform based on gold nanoparticles anchored conductive carbon black modified graphite nanopowder flakes paste electrode was developed for the detection of Favipiravir (FVP). The sensor exhibited excellent sensitivity, stability, and anti-interference capability, allowing simultaneous detection of FVP and co-administered drug paracetamol (PCT). The detection limits for FVP and PCT were 7.5 nM and 4.3 nM, respectively. The sensor was successfully applied for simultaneous detection of FVP and PCT in spiked human plasma and pharmaceutical preparations, as well as in the presence of ascorbic acid in a real sample.
MICROCHEMICAL JOURNAL
(2023)
Article
Biochemistry & Molecular Biology
Amr A. Essawy, Khaled F. El-Massry, Ibrahim Hotan Alsohaimi, A. El-Ghorab
Summary: This research addresses the specific trapping of hydroxyl radicals and the efficacy of encapsulating natural antioxidants. A novel photoluminescent system is used to evaluate the scavenging potentiality of hydroxyl radicals in date seed oil (DSO). It is demonstrated that encapsulation improves the preservation activity of natural antioxidants, even after five months of extraction, compared to synthetic antioxidants. The developed fluorimetric probing technique upgrades antioxidant medicines and provides insights on mechanistic hydroxyl radical-damaging biology.
Article
Chemistry, Multidisciplinary
Meshal Alzaid, Muhammad Zahir Iqbal, Bandar Alqahtani, Rakan Alanazi, Ibrahim Hotan Alsohaimi, W. S. Mohamed, N. M. A. Hadia
Summary: The layered structures of tungsten disulfide (WS2) and molybdenum tungsten disulfide (MoWS2) are considered as promising electrode materials for energy storage devices. By depositing WS2 and MoWS2 on the current collector using magnetron sputtering (MS), an optimized layer thickness can be achieved. The electrochemical investigations using cyclic voltammetry (CV), galvanostatic charging discharging (GCD), and electro-impedance spectroscopy (EIS) techniques revealed that WS2 with optimized thickness performed the best. A hybrid supercapacitor WS2//AC showed excellent cyclic stability, energy density, and power density, making it suitable for future energy storage applications.
Article
Chemistry, Physical
Yuanxing Fang, Ronan Hodgson, Wei Cheat Lee, Huyen Le, Hon Wing Boaz Chan, Hassan M. Hassan, Ibrahim H. Alsohaimi, Giacomo E. Canciani, Rong Qian, Qiao Chen
Summary: Photocatalytic water splitting has gained increasing attention as a green fuel source. In this study, TiO2 hollow hemisphere-based films were created and used for photoelectrochemical water splitting. The unique morphology and porous structure of the TiO2 hollow hemispheres improved the PEC performance by reducing charge recombination and enhancing light absorption.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Green & Sustainable Science & Technology
Xianbo Sun, Ying Pan, Yanyu Song, Wen Liu, Long D. Nghiem, Qilin Wang, Zhengqing Cai
Summary: A novel carbon quantum dots decorated C-doped alpha-Bi2O3 photocatalyst (CBO/CQDs) was synthesized and showed significantly improved contaminants removal efficiencies. CBO/CQDs exhibited much higher ceftriaxone sodium degradation rate constant (k) compared to pure alpha-Bi2O3 and C-doped alpha-Bi2O3. The synergistic effect of carbon doping, CQDs loading, and reduced particle size of CBO/CQDs enhanced the utilization of visible light and efficient separation of photogenerated carriers.
ENVIRONMENTAL SCIENCE AND ECOTECHNOLOGY
(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)
