Article
Biochemistry & Molecular Biology
Yaser Rasouli, Mohammad Mehdi Parivazh, Mohsen Abbasi, Mohammad Akrami
Summary: In this study, four inexpensive ceramic microfiltration membranes were synthesized and their performance in treating salt-containing wastewater was investigated. The results showed that the permeate flux of the membranes increased significantly at lower salt concentrations, but decreased at higher concentrations. Furthermore, the rejection of ions slightly increased with the increase in salt dosage, while the oil rejection remained relatively constant.
Article
Engineering, Environmental
Maxim Shurygin, Christiane Guenther, Stephan Fuchs, Volker Prehn
Summary: Emissions from the ceramic industry cause pollution to water bodies due to organic compounds, heavy metals, and chemicals. The effluent must be treated before discharge, and laws control the chemical oxygen demand. Membrane technologies offer advantages over conventional methods, with nanofiltration using ceramic membranes showing promise in reducing COD levels. Multi-stage filtration with various membrane combinations can effectively lower COD levels and increase operating time.
WATER SCIENCE AND TECHNOLOGY
(2021)
Article
Polymer Science
Victor-Hugo Antolin-Ceron, Francisco-Jesus Gonzalez-Lopez, Pablo Daniel Astudillo-Sanchez, Karla-Alejandra Barrera-Rivera, Antonio Martinez-Richa
Summary: This article reports the synthesis of a polyurethane membrane with superior strength and toughness by incorporating reactive cellulose nanocrystals. The addition of nanocrystals significantly increases Young's modulus and pure water flux of the membrane. The nanocrystals also affect the intermolecular interactions and pore nature of the membrane.
Article
Engineering, Chemical
Ahmed O. Rashed, Chi Huynh, Andrea Merenda, Si Qin, Maxime Maghe, Lingxue Kong, Takeshi Kondo, Ludovic F. Dumee, Joselito M. Razal
Summary: The engineering of electrocatalytic membrane reactors integrates membrane separation with electrocatalytic technology for efficient removal of emerging organic pollutants from waste-water. Electro-responsive microfiltration carbon nanofibre (CNF) membranes were synthesized by electrospinning and subsequent carbonization, followed by oxygen plasma treatment to enhance their wettability and reactivity for electrocatalytic water treatment. The CNF membranes exhibited fine-tuned electrocatalytic performance and improved water permeance, resulting in significantly higher removal efficiency of methylene blue (MB) and acetaminophen (ACP) during combined microfiltration and electrocatalytic reaction compared to microfiltration alone. The success of this study lies in the enhanced wettability and raised electro-oxidation capacity of the oxygen plasma treated CNF membranes.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Engineering, Environmental
Elshan Bonyadi, Farzin Zokaee Ashtiani, Shima Ghorabi, Ali Sallakh Niknejad
Summary: This study successfully enhanced the hydrophilicity and anti-fouling properties of PES membrane using modification technology, demonstrating high filtration performance and efficiency in oily wastewater treatment.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Chemistry, Physical
Narges Vafa, Amin Hamed Mashhadzadeh, Maryam Zarghami Dehaghani, Bahar Firoozabadi, Sasan Nouranian, Christos Spitas
Summary: Nanoporous boron nitride (BN) nanosheets show promising potential as reverse-osmosis membrane materials for removing hazardous heavy metals. Molecular dynamics simulations were used to study the performance of BN slit membranes (BNSMs) in purifying water contaminated with arsenic, mercury, and chloride ions. The results demonstrate that increasing the slit width of the membranes leads to higher water flow rates and lower ion rejection percentages.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Engineering, Chemical
Sijia Wang, Tianhao Zhu, Benbing Shi, Chunyang Fan, Yiqin Liu, Zhuoyu Yin, Zhong Gao, Zhenjie Zhang, Hong Wu, Zhongyi Jiang
Summary: Developing a sulfonated poly (ether ether ketone) (SPEEK)-based proton exchange membrane with high proton conductivity and robust mechanical stability is desired for proton exchange membrane fuel cells (PEMFCs). In this study, a phosphoric acid porous organic polymer (PAPOP) with high-density phosphoric acid groups and microporous structure was synthesized and incorporated into the SPEEK matrix. The hybrid membrane showed greatly enhanced proton conductivity and mechanical strength, resulting in a two times increase in the maximum power density of the fuel cell compared to the control membrane.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Review
Environmental Sciences
Thanigaivelan Arumugham, Noel Jacob Kaleekkal, Sruthi Gopal, Jenny Nambikkattu, K. Rambabu, Ahmed Mamdouh Aboulella, S. Ranil Wickramasinghe, Fawzi Banat
Summary: The development of porous ceramic membranes has provided a sustainable and efficient solution for clean water supply, particularly in wastewater treatment and desalination applications. These membranes exhibit excellent properties such as hydrophilicity, low fouling, ease of cleaning, and robust performance in harsh conditions.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Environmental Sciences
Gabriela Soledad Live Lozada, Ana Isabel Garcia Lopez, Antonio Martinez-Ferez, Javier M. Ochando-Pulido
Summary: This research focuses on the modelling and optimization of a green procedure based on microfiltration technology for the recovery of antioxidant compounds from olive-oil washing wastewater. The study identifies key operational factors and utilizes statistical analysis to model and optimize the microfiltration process. The results show a significant improvement in the rejection rates of TSS and TACs, allowing for the recovery of a high percentage of antioxidant compounds from the wastewater.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Chemistry, Multidisciplinary
Qing Dai, Feng Xing, Xiaonan Liu, Dingqin Shi, Congzhi Deng, Ziming Zhao, Xianfeng Li
Summary: Polybenzimidazole (PBI) membranes are found to have amphoteric ion transport characteristics and an ultrastrong Donnan effect, showing excellent performances in both acidic and alkaline flow batteries.
ENERGY & ENVIRONMENTAL SCIENCE
(2022)
Article
Engineering, Chemical
Marek Gryta, Piotr Wozniak
Summary: This study investigated the application of microfiltration polypropylene (PP) membranes and polytetrafluoroethylene (PTFE) membranes for treating carwash wastewater. The fouling phenomenon limited the effectiveness of the process, but the PP membranes were able to effectively remove turbidity and Escherichia coli from the wastewater.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Yoojin Lee, Minju Cha, Yeon So, In-Hyuck Song, Chanhyuk Park
Summary: In this study, boron nitride (BN) nanomaterials were used to enhance the separation performance of membranes. Two different functionalization methods were explored to introduce hydroxyl groups on BN surfaces. The functionalized BN-coated ceramic NF membrane exhibited a promising separation performance for both particulate and organic contaminants by modifying the surface chemistry of the ceramic membrane and reducing membrane pores by adding nanochannels.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Green & Sustainable Science & Technology
Chan Juan Li, Yao Jun Zhang, Hao Chen, Pan Yang He, Qian Meng
Summary: In this paper, a cost-effective hierarchical pore geopolymer based on solid waste was synthesized and showed excellent adsorption properties for removing methylene blue dye from wastewater. The acid-treated geopolymer particles exhibited a high specific surface area and microporosity, providing abundant adsorption sites for the dye. The optimal geopolymer adsorbent achieved a high adsorption efficiency and removal efficiency, and showed good regeneration performance and selectivity towards cationic dyes.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Chemistry, Multidisciplinary
Hongying Tang, Jian Gao, Yidong Wang, Nanwen Li, Kang Geng
Summary: Efforts have been made to mitigate the leaching of phosphoric acid (PA) in high temperature proton exchange membrane fuel cells (HT-PEMFC). Strategies such as introducing phosphonic acid by covalent bond, using ion-pairs interaction and siphoning effect, and blending with inorganic nanoparticles have been proposed. Among these strategies, the siphoning effect is the most efficient method to retain PA and enable flexible operation within a wide temperature range.
CHEMISTRY-A EUROPEAN JOURNAL
(2022)
Article
Biochemistry & Molecular Biology
Pau Sanchis-Perucho, Daniel Aguado, Jose Ferrer, Aurora Seco, Angel Robles
Summary: This study evaluated the feasibility of using a commercial porous membrane for direct filtration of municipal wastewater. The results showed that the membrane pore size, treated influent, and operating solids concentration had significant effects on the filtration performance. The use of the UF membrane demonstrated better performance with longer filtration periods and reduced fouling compared to the MF membrane. The study also found that physical fouling control strategies were ineffective for controlling UF membrane fouling.
Article
Engineering, Electrical & Electronic
Rongyan Chuai, Bing Zhang, Siping Hao, Yuxin Yang, He Zhang
Summary: This paper introduces a novel capacitive pressure-sensitive structure with a linkage film to expand the linear response range and improve linearity. Simulation results show that the proposed structure significantly outperforms the traditional touch mode capacitive pressure-sensitive structure in terms of linear response range and nonlinearity.
JOURNAL OF COMPUTATIONAL ELECTRONICS
(2021)
Article
Energy & Fuels
Bing Zhang, Suixin Zhang, Yonghong Wu, Xueqian Hong, Yuji Liang, Tonghua Wang, Jieshan Qiu
Summary: The air oxidation strategy can effectively modify the microstructure and properties of microfiltration carbon membranes, improving their efficiency in treating oily wastewater. By optimizing the oxidation temperature and time, the best separation performance can be achieved, along with enhanced anti-fouling ability.
CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION
(2021)
Article
Engineering, Chemical
Chen Yang, Bing Zhang, Suixin Zhang, Yonghong Wu, Tonghua Wang, Jieshan Qiu
Summary: The study successfully prepared mixed matrix carbon membranes with high gas separation performance by adding Sepiolite dopants on carbon supports. The addition of Sepiolite enhanced the thermal stability and microstructure of the membranes, significantly improving gas permeability and selectivity.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2021)
Article
Engineering, Electrical & Electronic
Rongyan Chuai, Bing Zhang, Yuxin Yang, Guimin Jiang, He Zhang, Xin Li
Summary: A novel pressure-sensitive chip with a linkage film was designed to improve the performance of capacitive pressure sensors. The chip, featuring a composite three-layer membrane on the top electrode plate, showed significant improvements in linear operation range and linearity through finite element analysis. The sample chip, trial-produced using SOI wafers and silicon fusion bonding process, exhibited high sensitivity and low non-linearity in the pressure range of 20-64 kPa.
MICROELECTRONICS JOURNAL
(2021)
Article
Instruments & Instrumentation
Rongyan Chuai, Yuxin Yang, Bing Zhang, Guimin Jiang, He Zhang
Summary: This study investigates the overload characteristics of a capacitive pressure-sensitive chip with linkage film to meet the demands of pressure measurement under high overload conditions. The influence of sizes of the sensitive structure on the overload pressure is explained through simulation and analysis. The experimental results demonstrate that the proposed chip has a linear response in a certain pressure range and can achieve a high overload pressure.
REVIEW OF SCIENTIFIC INSTRUMENTS
(2022)
Article
Engineering, Environmental
Hongchao Li, Yonghong Wu, Heming Huang, Bing Zhang, Yuji Liang, Ying Chen, Tonghua Wang
Summary: The development of hydrophilic microfiltration carbon membrane (MFCM) is crucial for enhancing the separation performance of oil-water emulsion. In this study, a strategy of surface synthesizing a hydrophilic polyethylene glutaraldehyde (PVG) coating was proposed to modify the microstructure and properties of MFCM. The modified MFCM exhibited improved thermal stability, functional groups, morphology, and porous structure, leading to enhanced water permeation flux and oil rejection in oily wastewater.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Engineering, Chemical
Hongchao Li, Bing Zhang, Xueqian Hong, Yonghong Wu, Tonghua Wang
Summary: Separating oil-in-water emulsion is a major challenge in various fields including materials, environment, chemistry and resources. In this study, microfiltration carbon membranes (MFCMs) were fabricated using polyacrylonitrile fibers (PANf) and phenolic resin. The MFCMs showed enhanced thermal stability and improved separation performance for removing oil from wastewater.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2022)
Article
Environmental Sciences
Hongchao Li, Bing Zhang, Yonghong Wu
Summary: Microfiltration carbon membranes (MCMs) prepared from a blend of phenolic resin (PR) and coal as precursor materials show great potential for efficient removal of emulsified oil from oily wastewater. The MCMs exhibit excellent oil-water separation performance and anti-fouling ability, making them highly suitable for oily wastewater treatment.
ENVIRONMENTAL TECHNOLOGY
(2023)
Article
Chemistry, Physical
Yonghong Wu, Shiqi Guo, Heming Huang, Bing Zhang
Summary: An immersing strategy was developed to modify the porous structure of microfiltration carbon membranes (MFCMs) for treating oily wastewater. The results showed that the MFCMs achieved a minimum pore size of 0.13μm and a porosity of 31.96% when immersed in a 3% solution for 60 seconds. The modified MFCMs exhibited high oil rejection (99.85%) and water permeation flux (392.16Kg/m2•h•MPa), and maintained good anti-fouling ability.
SURFACES AND INTERFACES
(2023)
Article
Environmental Sciences
Bing Zhang, Yao Peng, Yanhu Yao, Xueqian Hong, Yonghong Wu
Summary: Composite microfiltration carbon membranes (MCMs) were prepared by doping phenolic resin with TiO2 and Fe2O3. The effect of dopant amount on the separation performance of MCMs was investigated and it was found that a mixed matrix system constructed by TiO2 and Fe2O3 can optimize the pore size, porosity, and hydrophilicity of MCMs. The maximum oil rejections of 98.9% and 99.6% were achieved with MCMs containing 25% TiO2 and Fe2O3 dopant, respectively.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Engineering, Environmental
Long Li, Jiangnan Wang, Hongchao Li, Xin Guan, Kang Li, Bing Zhang, Xueqin Li, Jinli Zhang
Summary: In this study, mixed-dimensional fillers of NiCo-layered double hydroxide-decorated polypyrrole nanotubes (PNT@NiCo-LDH) were synthesized and incorporated into Pebax MH 1657 (Pebax) matrix to fabricate mixed matrix membranes (MMMs) for efficient CO2 separation. PNT@NiCo-LDH played a vital role in constructing 1D/2D/3D CO2 transport pathways in MMMs and accelerating CO2 selective transport. The prepared MMMs exhibited excellent CO2 separation performance.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Education, Scientific Disciplines
Xin Guan, Yonghong Wu, Yingfei Zheng, Bing Zhang
Summary: Developing blend membrane materials is an effective way to improve the gas separation efficiency and commercial potential of membrane technologies. In this study, free-standing membranes were prepared using Pebax-1074 as the polymer matrix and poly(ethylene glycol) (PEG) as fillers. The addition of PEG significantly improved the structural and separation performance of the blend membranes. The optimal CO2 permeability and CO2/N-2 selectivity were achieved under specific conditions.
Article
Engineering, Chemical
Haitao Liang, Yonghong Wu, Fei Wang, Bing Zhang
Summary: Magnetically functionalized attapulgite (ATP) was synthesized by loading Fe3O4 onto ATP, and the modified ATP showed improved thermal stability and dispersibility. The adsorption capacity of ATP for emulsified oil slightly decreased after Fe3O4 modification, but it could be easily recovered by an external magnetic field.
DESALINATION AND WATER TREATMENT
(2022)
Article
Engineering, Environmental
Yanhu Yao, Bing Zhang, Mengsheng Jiang, Xueqian Hong, Yonghong Wu, Tonghua Wang, Jieshan Qiu
Summary: Microfiltration SiO2/carbon membranes were prepared by blending SiO2 microspheres into carbon membrane matrix and characterized by various techniques. The addition of SiO2 microspheres improved the surface properties and separation performance of carbon membranes, resulting in membranes with efficient oil removal capabilities.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Engineering, Chemical
Yonghong Wu, Rui Yao, Xueqian Hong, Bing Zhang, Tonghua Wang
Summary: A single-stage filtration method was developed for the purification of oily wastewater using diatomite/carbon composite microfiltration membranes, with diatomite addition improving the thermal stability and compactness of the membranes. The maximum oil rejection rate reached 98.9% with a permeation flux of 147.86 kg m(-2) h(-1) by MFCMs, which can be further enhanced by post-oxidation for improved antifouling ability.
DESALINATION AND WATER TREATMENT
(2021)
