Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Zhaoping Hou,Jian Shu,Yuanzheng Han,Liangliang Liu,Wanggang Zhang,Zhong Huang,Shaowei Zhang
This study developed a bauxite-based ceramic microfiltration membrane with a sandwich structure, featuring dual mullite-whisker separation layers surrounding a coarse-particle intermediate layer, fabricated through a simplified sieving and co-sintering process. The separation layers, derived from fine bauxite particles, formed high-aspect-ratio mullite whiskers on their surfaces, imparting superhydrophilic properties. The intermediate layer, built from coarse bauxite particles, enhanced the flow rate due to its macroporous structure. The integrated sandwich design delivered exceptional oil/water separation efficiency (96.9 %) and a high pure water flux of 669.3 L·m⁻²·h⁻¹ , balancing selectivity and permeability. The membrane also showed remarkable durability, retaining a water flux of 547.3 L·m⁻²·h⁻¹ after simple cleaning and recycling, with separation performance for emulsions of varying concentrations dropping by less than 1.5 % after 9 cycle tests. This cost-effective, scalable fabrication method highlights the potential of bauxite-based ceramic membranes for efficient and sustainable oil-in-water separation applications.
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高影响因子
APPLIED SURFACE SCIENCE
·
2016
·
IF 3.15
Yu Han,Shuijun Song,Yin Lu,Dongfa Zhu
The hydrophilic modification of a polyvinylidene fluoride (PVDF) microfiltration membrane via pretreatment with argon plasma and direct surface-initiated atom transfer radical polymerization (ATRP) was studied. Both modified and unmodified PVDF membranes were characterized by Fourier transform infrared spectroscopy (FTIR), water contact angle, scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and pore size distribution measurements. FTIR and XPS spectra confirmed that sulfobetaine methacrylate (SBMA) had been grafted onto the membrane surface. The initial contact angle decreased from 87.0° to 29.8° and a water drop penetrated into the modified membrane completely in 8 s. The pore size distribution of the modified membrane exhibited a smaller mean value than that of the original membrane. The antifouling properties of the modified PVDF membrane were evaluated by a filtration test using bovine serum albumin (BSA) solution. The results showed that the initial flux of the modified membrane increased from 2140.1 L/m 2 h to 2812.7 L/m 2 h and the equilibrium flux of BSA solution increased from 31 L/m 2 h to 53 L/m 2 h.
研究领域:
材料科学
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环境工程
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高影响因子
ACS Sustainable Chemistry & Engineering
·
2022
·
IF 9.224
Xueye Wang,Hongyi Han,Huimin Zhou,Tianlin Wang,Ruobin Dai,Zhiwei Wang
Membrane separation is widely adopted in many industries, and the membranes reach their end of life (EOL) after long-term use. However, the conventional approach of replacing EOL membranes has a high carbon footprint, hindering the development of a green, low-carbon, and carbon-neutral process. In this study, we developed a cleaning–tannic acid-iron (TA-Fe)-healing–interfacial polymerization strategy with a reaction time of less than 20 min for the upcycling of an EOL microfiltration (MF) membrane. The cleaning step could remove most of the foulants from the EOL membrane. The TA-Fe healing step decreased the surface pore size and increased the hydrophilicity of the cleaned membrane, offering a more favorable platform for the storage of amine monomers required for interfacial polymerization. The upcycled NF-Healed membrane possessed a Na2SO4 rejection of 96.9 ± 0.7% and high pure water permeance of 23.7 ± 1.4 L m–2 h–1 bar–1. An economic analysis indicated that the chemical cost for upcycling was ∼$4.9/m2 membrane, which was lower than the estimated cost to replace the EOL MF membrane. This study provides a rapid and cost-effective method for the upcycling of the EOL MF membrane, which is a promising strategy to close the sustainable loop in the membrane materials.
研究领域:
环境工程
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材料科学
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水处理
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可持续性
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Zixin Zhang,Guohe Huang,Yongping Li,Yao Yao,Peng Zhang,Xiujuan Chen,Shaojie Ren,Yifei Luo,Yuanzheng Zhang
Rendering heterogeneous electro-Fenton (hetero-e-Fenton) reactivity is a promising strategy to address the bottlenecks of low-pressure membranes (LPMs), such as the poor ability to remove small-molecular organic pollutants and membrane fouling. However, hetero-e-Fenton catalysis usually suffers from the limitation of the sluggish redox cycle of Fe(III)/Fe(II). Herein, we reported an electrocatalytic ceramic microfiltration membrane functionalized with CuFe 2 O 4 nanoparticles supported by nitrogen-doped carbon nanotubes (NCNTs). The Fe(II) and Cu(I) sites on the CuFe 2 O 4 decomposed the H 2 O 2 generated by NCNTs into ·OH. The electron transfer from the conductive NCNTs support and reducing agent Cu(I) to Fe(III) enabled an effective Fe(II) regeneration. Moreover, the N species in NCNTs enhanced the interfacial interaction between CuFe 2 O 4 nanoparticles and the NCNTs support, expediting the Fe(III)/Fe(II) redox cycle by promoting the interfacial electron transfer. At near-neutral pH, the electrocatalytic membrane delivered excellent tetracycline removal kinetics (0.0134 min −1 ) and significantly alleviated the organic fouling on the membrane surface and in the pores. The membrane also exhibited good stability, reusability, and permeate water safety. These findings shed new light on the development of next-generation water treatment membranes with catalytic oxidation capabilities.
研究领域:
环境科学
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材料科学
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化学工程
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高影响因子
CHINESE JOURNAL OF CHEMICAL ENGINEERING
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2022
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IF 3.898
Yang Liu,Qiu Han,Guiliang Li,Haibo Lin,Fu Liu,Gang Deng,Dingfeng Lv,Weijie Sun
Precluding the excessive lipoproteins from plasma rapidly and effectively is highly needed for biomedical detection and reducing plasma product scrap in blood donation stations. The current centrifugation procedure is high-cost and time-consuming. Herein, we fabricated an anionic microfiltration polyethersulfone (PES) membrane modified by interface swelling and implanting of acrylic acid (AA) for screening out large particle lipoprotein chylomicron (CM) and adsorbing cationic very low-density lipoproteins (VLDL). To improve the separation efficiency, a two-stage filtration through carboxylated polyethersulfone microfiltration membranes with the mean pore size of 0.45 and 0.22 μm respectively were conducted. Attenuated total reflection Fourier transform infrared technique (ATR-FTIR), water contact angle (WCA), Zeta potential and scanning electron microscope (SEM) were employed to characterize the modified membrane. To test the effectiveness of this membrane, plasma flux and concentration variation of plasma components were examined to study the purification effectiveness. Furthermore, the hemocompatibility of modified membranes was tested to confirm its practicability on blood-contacting materials. The carboxylated polyethersulfone microfiltration membrane shows its promising potential application to purify chylous plasma.
研究领域:
生物医学工程
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膜技术
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血液处理
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血浆分离
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高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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2021
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IF 3.764
Ruifeng Liang,Ruiquan Yu,Rui Wang,Zhixuan Zhou,Gongyan Liu
Owing to the overuse of antibiotics, antibiotics and antibiotic-resistant bacteria (ARB) are frequently detected in aquatic environments, which has aroused widespread concern regarding its impact on the balance of ecosystems and human health. Removing antibiotics and ARB in contaminated water via a trustworthy, sustainable, and low-cost approach is quite difficult. Furthermore, silver nanoparticles (AgNPs) have been proven to be a promising catalyst for generating reactive oxygen species (ROS) via activating peroxymonosulfate (PMS) for the efficient removal of antibiotics. Unfortunately, frequent biofouling on the membrane surface will negatively impact the water purification performances of the filtration processes by decreasing water flux. Herein, gallic acid-modified silver nanoparticles (GA@AgNPs) were selected to facilely and robustly decorate a conventional polyamide microfiltration (PMF) membrane by various interactions between amino and catechol groups without reducing its water permeability. Moreover, the as-prepared GA@AgNPs-PMF membrane exhibited strong antibacterial activity, which could effectively migrate biofouling on the membrane surface. In addition, the GA@AgNPs-PMF membrane could effectively generate ROS via activating PMS, facilitating the removal of antibiotics, and achieving ∼80% removal efficiency within 3 h. Therefore, the GA@AgNPs-PMF membrane developed in this work is a promising low-energy membrane system for the practical removal of antibiotics and ARB.
研究领域:
环境工程
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纳米技术
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水处理
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材料科学
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高影响因子
Journal of Environmental Chemical Engineering
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2022
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IF 7.968
Yashi Qing,Yanxiang Li,Zhiwei Guo,Yujie Yang,Wangliang Li
17β-estradiol (E2) is one of the endocrine disrupting chemicals (EDCs) ubiquitously with significant impacts on ecosystem and organisms even at extremely low concentrations. Photocatalytic membranes, with the combination of photocatalysis and membrane filtration, have great potential to enhance E2 removal. In this work, a photocatalytic membrane was fabricated from the polyamide (PA) microfiltration membrane and visible light responsive Bi 2 WO 6 /protonated g-C 3 N 4 (BPG) photocatalyst. The BPG photocatalyst was embedded into calcium alginate hydrogel followed by immobilizing onto PA membrane through vacuum filtration and crosslinking. The transparent calcium alginate hydrogel guaranteed 100% light transmittance which contributed to visible light induced photodegradation . Under static and dynamic conditions, the removal efficiency of E2 reached 99.5% and remained 95.1%, which was mainly owing to the synergistic effects of the adsorption of PA and photodegradation of the BPG nanocomposites . The synergistic interaction was fitted by modified Elovich model, and a strong positive correlation (r = 0.834, r s = 0.965) was confirmed by Pearson’s and Spearman’s correlation coefficient , indicating that adsorption could enhance photocatalysis by concentrating contaminants around the photocatalyst and photocatalysis could promote the adsorption by regenerating adsorption sites. The photocatalytic membrane can be reused, and the removal efficiency of E2 was 96.6% after 5 cycles. This work provided not only a facile fabrication of photocatalytic membrane, but also a deep understanding of the synergistic adsorption-photocatalysis for effective removal of E2.
研究领域:
环境科学
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材料科学
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水处理
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化学工程
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DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Yongjun Song,Aimin Wang,Songyu Ren,Yanyu Zhang,Ruiyan Fan,Ying Liu,Zhongguo Zhang
The utilization of hybrid electro-Fenton (EF) processes has gained considerable attention, which can combine the advantages of two or more treatment methods resulting in efficient removal of refractory pollutants from water. Here, an electro-controlled membrane coupling heterogeneous EF (EM-HEF) system was constructed for the degradation of acetaminophen (APAP) in water. In the EM-HEF system, a bifunctional ACF/CC-FeOCl-Cu cathode material was synthesized to enhance the HEF reaction, while a tubular Ti microfiltration membrane was used as both cathode and membrane. Degradation experiments indicated the EM-HEF system exhibited remarkable removal efficiency (97.0 %) towards APAP within 30 min under the conditions of flow rate at 60 mL min −1 , initial pH at 7.1, and current density at 3 mA cm −2 . Notably, the cathode materials showed low metal leaching rate and high APAP removal rate in the 10 cyclic experiments. The common inorganic anions (Cl − , HCO 3 − , HPO 4 2− , and NO 3 − ) did not inhibit the removal of APAP significantly, whereas humic acid exhibited a more pronounced inhibitory effect only at concentrations exceeding 10 mg L −1 . Quenching experiments and electron spin resonance (ESR) tests confirmed the pivotal role of hydroxyl radicals in the decomposition of APAP. Combining density functional theory (DFT) and LC-MS results, three pathways were proposed. The overall toxicity of intermediates was relieved during EM-HEF degradation of APAP. Furthermore, it also achieved good performance in the treatment of landfill leachate, with increasing BOD 5 /COD ratio from 0.11 to 0.34. This work provides an efficient strategy for the removal of refractory pollutants in water.
研究领域:
环境科学
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水处理
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化学工程
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材料科学
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计算化学
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高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
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2019
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IF 6.393
Luyu Wang,Jin Xu,Xiaohong Wang,Zhixuan Cheng,Jiaqiang Xu
Although many humidity sensing materials have satisfactory properties based on quartz crystal microbalance (QCM) transducer, their synthesis processes are complex. Herein, we report an effective and facile method to modify porous polypropylene microfiltration membrane (PPMM) evenly via the deposition of N-rich functional polymer (PDA-PEI), which was easily synthesized by crosslinking polydopamine (PDA) and polyethyleneimine (PEI). The PDA-PEI modified PPMM well retained the pore structure and was first employed to detect relative humidity based on QCM featured with rapid response, satisfactory repeatability and stability. Compared with PDA modified PPMM, the humidity sensing performance of PDA-PEI modified PPMM is improved considerably. Furthermore, the sensing mechanism study based on Gaussian 09 software reveals that the interaction between PDA-PEI and water molecules belongs to weak chemical adsorption. Such a comprehensive research foresees the potential application of PDA-PEI modified PPMM for fast detection of humidity indoor and outdoor.
研究领域:
材料科学
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化学工程
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传感器与执行器
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高影响因子
Journal of Materials Chemistry B
·
2022
·Vol. 10
·期 14
·2719-2727
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IF 7.571
Zhili Zhang,Jin-Bo Li,Xu Li,Cheng-Ye Zhu,Liujie Ren,Xiao-Jun Huang,Jian Wu,Jian Ji,Zhi-Kang Xu
The tympanic membrane plays an important role in the human hearing system, which is easily perforated under unfavorable conditions, leading to loss of hearing and otitis media. Many autologous materials and artificial materials have been used to repair a perforated tympanic membrane, but these materials sometimes can cause severe hearing loss because of their adhesion to the ossicle during the healing process and the postoperative process. Herein, we report Janus membranes with asymmetric cellular adhesion behaviors for regenerating the eardrum. These Janus membranes are constructed by co-depositing a tannic acid (TA)/3-aminopropyltriethoxysilane (APTES) coating on one surface of the polypropylene microfiltration membrane. Cellular experiments indicate that the Janus membranes have good biocompatibility and asymmetric cellular adhesion properties. The repair of the tympanic membrane perforation experiment and laser Doppler vibrometer (LDV) measurements prove that the hydrophilic surface of Janus membranes repairs perforated eardrums, and meanwhile the hydrophobic surface can avoid adhering to the inner ear tissue for reducing hearing loss. The Janus membranes have good prospects in the treatment of tympanic membrane perforation.
研究领域:
生物材料
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组织工程
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耳鼻喉科
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生物医学工程
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF MEMBRANE SCIENCE
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2022
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IF 10.53
Yi Yu,Qiu Han,Haibo Lin,Shaofeng Zhang,Qiu Yang,Fu Liu
The fine micro-structure regulation of polymeric membranes is crucial to the separation performances. Herein, we prepared a novel Polyphenylsulfone (PPSU)/sulfonated polysulfone (SPSf) microfiltration membrane with ‘hour-glass’ like spongy micropore-structure via vapor and liquid induced phase separation (V-LIPS) technique. A precritical casting solution was prepared by adding a certain amount of H 2 O using N, N -dimethylacetamide (DMAc) as the solvent and Polyvinyl Pyrrolidone (PVP) as the pore-forming agent. The effect of residence time in vapor on membrane structures is extensively evaluated. Results revealed that the resultant membranes evolved from finger-like to bicontinuous structure with extending the exposure time (>5s) in vapor. The pure water flux of the membrane with the vapor time (30s) under the pressure of 0.2 bar reached a high value of 3045.7 ± 42.7 L/(m 2 ∙h). Moreover, the obtained membrane M3 showed excellent separation properties for surfactant-stabilized n-hexane-in-water, isooctane-in-water and decamethylcyclopentasiloxane (D5)-in-water emulsions with rejection coefficient up to >99%, >99% and >98% and high rejection of 99.0% to SiO 2 nanoparticles . Therefore, PPSU/SPSf membrane with controlled ‘hour-glass’ like spongy micro-pore structure showed high permeability with high rejection coefficient for both inorganic nanoparticles and oily water.
研究领域:
材料科学
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膜技术
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化学工程
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高影响因子
Journal of Environmental Chemical Engineering
·
2021
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IF 5.909
Chengdong Shi,Shuyan Yu,Le Wang,Xiuling Zhang,Xiaoqiu Lin,Congju Li
The treatment of antibiotic wastewater is a hot research topic now. To achieve a fast and efficient degradation effect, aligned polyacrylonitrile-based carbon nanofibrous (ACFs) membrane as anodic electrocatalysis microfiltration membrane was fabricated by high-speed electrospinning technology in this work. The morphology, structure, electrochemical performance and mechanical properties of ACFs membrane as anode filter were characterized. The high degrees of nanofiber alignment and carbonization are obtained at the rotating speed of 1500 r/min and the temperature of 900 ℃, respectively, which provides the ACFs membrane with good electrical conductivity and mechanical properties. The highest removal rate (nearly 80%) of tetracycline/oxytetracycline (TC/OTC) in mixture solution was obtained with 4 layers of ACFs membranes under the potential of 2.5 V at the initial concentration of 40 mg/L within the reaction time of 120 min. A decrease of removal rate by only 5% after 5 cycles of repeated experiments indicated good electrocatalytic activity and cycling stability of ACFs membrane. These results indicated that more than one antibiotic could be treated rapidly by ACFs membranes with a high removal rate in a short reaction time, and has great application prospects in the treatment of refractory antibiotic wastewater.
研究领域:
环境科学
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材料科学
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化学工程
·
废水处理
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DOI
高影响因子
危险品化学品经营许可证（带存储）