Article
Agricultural Engineering
Merve Visnyei, Peter Bakonyi, Katalin Belafi-Bako, Nandor Nemestothy
Summary: This research studied the recovery of dissolved biogas from synthetic anaerobic effluents using PDMS hollow-fiber gas-liquid membrane contactors. The study showed that the liquid flow rate favors CH4 transport, while the sweep gas flow rate is more preferable for CO2 transport. The methane recovery could be improved under steady-state conditions.
BIORESOURCE TECHNOLOGY
(2022)
Article
Engineering, Chemical
Zhao-Xu Wang, Wei-Shi Sun, Wen-Hai Zhang, Shuo Li, Ming-Jie Yin, Quan-Fu An
Summary: High-efficiency CO2 capture is crucial for mitigating the global temperature rise and its severe impacts on various aspects of human life. Thin-film composite membranes (TFCM) have gained attention due to their energy-efficient and environmentally friendly nature. However, the nonideal interface between the gutter layer and the separation layer limits the fabrication of defect-free and thin separation layers, resulting in poor separation performance. In this study, a strategy involving oxygen-plasma modification and spin-coating was developed to engineer the interface of TFCM and improve its performance.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Engineering, Chemical
Abby N. Harders, Erin R. Sturd, Julia E. Vallier, David R. Corbin, Whitney R. White, Christopher P. Junk, Mark B. Shiflett
Summary: This study investigates the use of poly(dimethylsiloxane) and CyclAFlor(TM) for the separation of R-410A, indicating high selectivity of HFC-32 over HFC-125. Permeability measurements and stability studies show promising results for the efficient separation of HFC refrigerant mixtures using membranes.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Seyed Mojtaba Mirfendereski, Tayebeh Mazaheri
Summary: High-quality ZSM-5 zeolite membranes were successfully synthesized by manipulating the microstructure of the zeolite layer, resulting in high selectivity without sacrificing permeance. The method effectively eliminated defects/microcracks in the seed layer and achieved excellent separation performance by filling them with smaller seeds.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2021)
Article
Engineering, Chemical
Bin Wang, Yulei Wang, Xinping Li, Shenglai Zhong, Rongfei Zhou
Summary: Increasing the Si/Al ratio in zeolite membranes enhances surface hydrophobicity and moisture resistance. Bilayer silicalite-1/SSZ-13 membranes with gradient pores and CO2 selectivity exhibit high separation efficiency and moisture resistance. The modified silicalite-1 layer improves CO2 permeance and selectivity, resulting in stable separation performance in wet conditions.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Engineering, Chemical
Sajjad Mohsenpour, Ahmed W. Ameen, Sebastian Leaper, Clara Skuse, Faiz Almansour, Peter M. Budd, Patricia Gorgojo
Summary: PIM-1 mixed matrix membranes (MMMs) fabricated with POSS and GO-POSS show higher CO2 permeability and good selectivity, surpassing the 2008 Robeson upper bound, and can slow down physical aging.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Chemical
Yongyue Zhang, Meiyue Sun, Lin Li, Ruisong Xu, Yanqiu Pan, Tonghua Wang
Summary: CMS/ZSM-5 mixed matrix membranes were prepared and investigated for their morphology and structure. The results showed that ZSM-5 particles were well dispersed in the carbon matrix and maintained their microstructure during pyrolysis. The CMS/ZSM-5 MMMs exhibited outstanding gas permeability without significantly sacrificing selectivity compared to pure CMS membranes. Additionally, the aging of the CMS/ZSM-5 MMMs in a humid environment was studied and the permeability of the aging membrane was partially recovered after thermal treatment.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Biochemistry & Molecular Biology
Eiji Hayakawa, Shuji Himeno
Summary: The use of rapid thermal processing (RTP) successfully produced Al-containing ZSM-58 zeolite membranes with DDR topology, preventing cracks and increasing CO2/CH4 selectivity.
Article
Engineering, Environmental
Seyedeh Mahsa Sharafi, Seyyed Mohsen Moghimi, Mohammad Javad Vaezi, Ali Akbar Babaluo
Summary: Optimization of seeding conditions can lead to the synthesis of high quality B-ZSM-5 zeolite membrane with a low template, enhancing the membrane's pervaporation performance.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Chemistry, Physical
Chunyan Tu, Huahua Fan, Dong Wang, Ning Rui, Yonghua Du, Sanjaya D. Senanayake, Zhenhua Xie, Xiaowa Nie, Jingguang G. Chen
Summary: Experimental studies and DFT calculations were conducted to investigate the tandem reactions of CO2-assisted oxidative dehydrogenation and aromatization (CO2-ODA) of ethane over ZSM-5 modified with zinc (Zn) and phosphorus (P). Results showed that the Zn/P-ZSM-5 catalyst exhibited higher ethane conversion, enhanced aromatics yield, and better stability compared to direct dehydrogenation and aromatization (DDA) reaction. The presence of CO2 reduced carbon deposition, stabilized Zn species, and facilitated the generation of more liquid aromatics in CO2-assisted ethane aromatization. Insights into the mechanisms of CO2-ODA over the Zn/P-ZSM-5 catalyst were provided by in situ characterization and DFT calculations.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Engineering, Chemical
Mide Luo, Zong Lu, Yali Zhao, Yufei Wang, Yanying Wei, Haihui Wang
Summary: In this work, tubular 2D MXene membranes were successfully prepared on commercial porous stainless steel substrates via fast electrophoretic deposition. The prepared membranes showed advantages of simple operation, high membrane assembly efficiency, and ease for scale-up. These tubular MXene membranes exhibited excellent gas separation performance with high hydrogen permeance and selectivity. Importantly, this work provides valuable reference for the development of other 2D material-based membranes for future applications.
Article
Multidisciplinary Sciences
A. L. Ahmad, M. I. F. Zainuddin, M. M. H. Shah Buddin, Z. M. H. Mohd Shafie
Summary: This study investigates the performance of poly(4-methyl-1-pentene) (PMP) membrane for separating CO2 gases. The research finds that a 5 wt% PMP membrane fabricated at 20 degrees C shows the best performance in terms of CO2 permeance and CO2/N-2 selectivity. By employing a non-solvent induced phase separation method, an anisotropic PMP membrane is fabricated with improved CO2 permeance but decreased CO2/N-2 selectivity compared to the dense membrane.
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2023)
Article
Engineering, Chemical
Chuanxin Zong, Xiaoquan Yang, Derong Chen, Yuan Chen, Haoli Zhou, Wanqin Jin
Summary: A facile and scalable coating method was employed in this study to fabricate thin pervaporation composite membranes. By optimizing the viscosity of the membrane solution and the hydrodynamic diameter of the polymer coil, composite membranes with thickness as low as 700 nm were successfully obtained. The composite membranes showed good separation efficiency and high flux, making them suitable for industrial applications.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Chemistry, Physical
Renjie Liu, Denis Leshchev, Eli Stavitski, Mitchell Juneau, Jane N. Agwara, Marc D. Porosoff
Summary: Research on utilizing CO2 as a C-1 feedstock for the synthesis of chemicals and fuels shows that the selectivity of catalysts is strongly linked to the Si/Al ratio and the method of introducing the K promoter.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Energy & Fuels
Yan Cui, Jian Qiu, Bin Chen, Leilei Xu, Mindong Chen, Cai-e Wu, Ge Cheng, Bo Yang, Ning Wang, Xun Hu
Summary: A series of Ni-based catalysts supported on ZSM-5 with different morphologies were synthesized and characterized. In-situ DRIFTS was performed to investigate the intermediates of the CO2 methanation reaction. It was found that the catalyst supported on short b-axis ZSM-5 exhibited higher activity, attributed to its unique morphology with large external surface area. Furthermore, La-doped catalyst showed enhanced low-temperature activity and CH4 selectivity. The catalyst with both short b-axis ZSM-5 support and La2O3 modification displayed the optimum catalytic performance.
Article
Engineering, Chemical
Lin Lang, Fateme Banihashemi, Joshua B. James, Jiansong Miao, Jerry Y. S. Lin
Summary: Post-synthesis modification of ZIF membranes through membrane surface ligand exchange (MSLE) has shown significant improvements in gas separation performance, particularly in H-2/C2H6 and C3H6/C3H8 selectivity, while the impact on C3H6/C3H8 selectivity is less pronounced.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Engineering, Chemical
Ali Mojaverian Kermani, Vahid Mahmoodi, Mahboube Ghahramaninezhad, Ali Ahmadpour
Summary: A novel core-shell nanostructured catalyst was synthesized by supporting Keplerate nanoball isopolyoxomolybdate {Mo-132} on ionic liquid-functionalized magnetic silica nanoparticles (MSN/IL-{Mo-132}), and showed high efficiency in deep oxidative desulfurization of a model fuel containing dibenzothiophene (DBT), achieving a sulfur removal rate of 99.97%.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Chemistry, Physical
Vahid Mahmoudi, Ali Mojaverian Kermani, Mahboube Ghahramaninezhad, Ali Ahmadpour
Summary: This research investigated a new core-shell structured nanocatalyst prepared by surface modification of magnetic silica nanoparticles with Keplerate nano-porous molybdenum oxide-based polyoxometalate, which showed high catalytic activity in oxidative desulfurization reactions. By optimizing reaction conditions and experimental design, it was found that temperature had the most significant impact on the process efficiency. The catalyst exhibited excellent sulfur removal efficiency under optimal conditions, with no loss of activity after multiple test runs and successful recovery using a magnet.
MOLECULAR CATALYSIS
(2021)
Article
Engineering, Chemical
Zoya Moslempour, Sepehr Sadighi, Ali Dashti, Ali Ahmadpour
Summary: The study investigates the affinity of 3A aluminosilicate adsorbents for preventing oligomerization of olefin molecules and forming green oil. Results indicate that the type of binder and the amount of ion exchange impact the performance of a 3A molecular sieve, providing design guidance for creating suitable adsorbents.
INTERNATIONAL JOURNAL OF CHEMICAL REACTOR ENGINEERING
(2022)
Article
Chemistry, Physical
Mahboube Ghahramaninezhad, Ali Ahmadpour
Summary: This article introduces a convenient and safe method to combine TiO2/SiO2 nanohybrids with beta-cyclodextrin (beta-CD) for synthesizing an advanced catalyst named TS-4/CM-beta-CD. The activity performance of the catalyst in oxidative desulfurization (ODS) of dibenzothiophene (DBT) is studied, and the structural and morphological properties of the catalyst are identified. The optimal conditions for ODS are determined to achieve a high sulfur removal rate. The important role of beta-CD rings in DBT trapping during the oxidation reaction is also investigated. This work presents a simple approach to synthesize an efficient and recoverable catalyst using environmentally friendly and economical materials, particularly beta-CD, as a safe modifier agent.
SURFACES AND INTERFACES
(2022)
Article
Thermodynamics
Shohreh Mirzaei, Akbar Shahsavand, Ali Garmroodi Asil, Ali Ahmadpour, Arash Arami-Niya
Summary: This study simulates and experimentally validates the actual charging condition of an adsorbed natural gas (ANG) vessel with variable gas flow rate, and investigates the thermal behavior of the vessel. The results show that the adsorbent with superior isothermal methane storage capacity leads to higher thermal fluctuations in the vessel. Increasing the length and diameter of the ANG tank prolongs the charging time and reduces temperature variations, while increasing the heat capacity of the adsorbent enhances the gravimetric methane storage efficiency.
APPLIED THERMAL ENGINEERING
(2022)
Article
Energy & Fuels
Fateme Banihashemi, Amr F. M. Ibrahim, Shuguang Deng, Jerry Y. S. Lin
Summary: This study investigates the pyrolysis/gasification process of Galdieria sulphuraria and demonstrates its potential as a low-cost and sustainable energy resource for producing high-quality oil and syngas. The results show that temperature significantly affects the product yield, conversion rate, and gas composition. Catalytic gasification at low temperatures produces hydrogen-enriched syngas and high HHV bio-oil with lower oxygen and nitrogen content.
BIOENERGY RESEARCH
(2023)
Article
Engineering, Chemical
Fateme Banihashemi, Jerry Y. S. Lin
Summary: This study reports the successful synthesis of high-quality and stable ZIF-8 membranes on a sol-gel derived mesoporous gamma-alumina layer coated on top of the alpha-alumina support. The ZIF-8 membranes synthesized on the scalable gamma-alumina coated alpha-alumina support exhibit improved separation performance.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Engineering, Chemical
Fateme Banihashemi, Jerry Y. S. Lin
Summary: This study investigates the influence of xylene activity on the vapor and liquid permeation/separation performance of b-oriented MFI zeolite membranes. The results showed that the permeance and separation factor increase with temperature, but decrease with increasing xylene activity. B-oriented MFI zeolite membranes exhibit better vapor permeation/separation performance compared to randomly oriented membranes, and show less negative effect of xylene activity on separation factor. However, both types of membranes show poor separation factor when operated in the pervaporation mode.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Engineering, Environmental
Emad Omrani, Ali Ahmadpour, Malihe Heravi, Tahereh Rohani Bastami
Summary: In this study, a novel heterostructure nanocomposite of ZnTi layered double hydroxide (ZnTi LDH) and hexagonal boron nitride (h-BN) was synthesized for the simultaneous removal of two organic pollutants from water. The nanocomposite exhibited both adsorption and photocatalytic performance, with the h-BN providing a large surface area for adsorption and the ZnTi LDH showing photocatalytic activity. The synthesized catalysts showed exceptional efficiency in removing the pollutants, achieving a simultaneous removal efficiency of over 99% for amaranth (AM) azo dye and 95% for diazepam (DZP).
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Chemistry, Multidisciplinary
Toktam Pedram-rad, Zarrin Es'haghi, Ali Ahmadpour, Malihe Samadi Kazemi, Ali Akbar Mohammadi
Summary: In this study, C-nanodots with low resistivity were combined with graphene-like boron nitride (g-BN) to form C-dots/g-BN catalyst. The catalyst showed superior performance in high-temperature oxidation reactions in fuel oil, with high catalytic activity and good controllability.
ARABIAN JOURNAL OF CHEMISTRY
(2022)
Article
Environmental Sciences
Fatemeh Deymeh, Ali Ahmadpour, Ali Allahresani
Summary: The degradation of antibiotics in water and wastewater is a challenge in environmental engineering. A Z-scheme nanocomposite was designed and synthesized for the photooxidative degradation of doxycycline and tetracycline in an aqueous solution. The nanocomposite showed high efficiency in removing the antibiotic pollutants under optimal conditions. The results suggest that the proposed photocatalyst has significant potential in reducing antibiotic contamination.
WATER AIR AND SOIL POLLUTION
(2023)
Article
Environmental Sciences
Maryam Sadat Ghasemzadeh, Ali Ahmadpour
Summary: A new visible-light active exfoliated g-C3N4/gamma-Fe2O3/ZnO yolk-shell nanoparticles photocatalyst was synthesized, which showed 80% and 95.6% degradation efficiency for Levofloxacin and Indigo Carmine, respectively, within 25 and 15 minutes. The catalyst exhibited excellent magnetic photocatalytic performance even after 5 times regeneration, with degradation efficiencies of 76% and 90% for Levofloxacin and Indigo Carmine, respectively. The superior performance was attributed to stronger visible light response, larger specific surface area, and more effective separation and transfer of photogenerated charge carriers.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Engineering, Environmental
Azam Jalali, Ali Ahmadpour, Mahboube Ghahramaninezhad, Elham Yasari
Summary: A new nanocomposite with enhanced CO2 adsorption capacity, thermal stability, and selectivity has been synthesized and studied. The nanocomposite showed a significant improvement in CO2 adsorption capacity compared to pristine UiO-66. It also exhibited good thermal stability and reversibility. This nanocomposite has potential applications in biogas and natural gas purification.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Saghar Ghazy, Ali Ahmadpour, Bahareh Babakhani, Ostad Saeed Movahed
Summary: This study optimized the condition of a newly formulated serum separator gel and investigated its impact on some clinical chemistry assays. The results showed that the new gel performed similarly to commercial gels in clinical assay results and had less interaction with blood samples in some tests.
IRANIAN JOURNAL OF CHEMISTRY & CHEMICAL ENGINEERING-INTERNATIONAL ENGLISH EDITION
(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)