Article
Engineering, Environmental
Bartosz Nowak, Marta Bonora, Maria Zuzga, Lukasz Werner, Anna Jackiewicz-Zagorska, Jakub M. Gac
Summary: The study shows that the use of surface-modified polypropylene non-woven material can enhance the performance of oil mist filtration. Specifically, adjusting the deposition method of the aerogel structure can improve the filtration efficiency and airflow resistance, and it is still competitive compared to other related research.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Engineering, Chemical
Haifeng Gong, Xinxin Liang, Chen Huo, Ye Peng, Hong Yin, Bao Yu, Yan Pan, Yunqi Liu
Summary: This study proposes an oil and solid separation method for multi-gradient filtration enhanced by an electric field, which can efficiently separate solid particles from lubricating oil. The results show that adjusting the electric field strength and flow velocity can significantly affect the filtration performance.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2023)
Article
Engineering, Environmental
Haifeng Gong, Xin Luo, Yang Yang, Chen Huo, Ye Peng, Bao Yu, Haohua Zhang
Summary: A device for simultaneous separation of oil, water, and solids is proposed, and its separation characteristics are investigated using a numerical model. The optimized structural parameters improve the separation performance, resulting in higher oil removal and solid removal rates. This study provides valuable guidance for the design of high-performance devices for lubricating oil purification using physical methods.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2023)
Article
Environmental Sciences
Chandra Jeet Singh, Samrat Mukhopadhyay, Raju Seenivasan Rengasamy
Summary: This study demonstrates the effective use of milkweed fibers in deep bed filtration for removing oil pollutants from oily effluents. Milkweed is a natural and biodegradable fiber that is easy to handle and environmentally safe.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
Chandra Jeet Singh, Samrat Mukhopadhyay, Raju Seenivasan Rengasamy
Summary: This study investigated the use of milkweed fibers for oil separation from oily effluent. By adjusting the filter bed height and porosity, efficient oil removal was achieved. The results showed that milkweed filter beds had excellent oil separation performance, and milkweed fibers are a safe and environmentally friendly natural fiber.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Engineering, Chemical
Christian Straube, Jorg Meyer, Achim Dittler
Summary: Nonwoven coalescence filter media are commonly used to separate droplet aerosols from gas streams. This study presents the deposited oil structures in the micrometer region of an oleophilic filter medium at different oil loading stages using micro-computed tomography. The local and global porosities as well as saturations are compared and evaluated, revealing significant deviations in the saturation. A new method to distinguish between different coalesced oil objects is developed. The majority of the deposited oil is stored in oil sails between adjacent fibers, and the size of oil droplets surrounding fibers increases with increasing oil loading time.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Engineering, Chemical
Xiaojing Yang, Shuai Liu, Zeyu Zhao, Zhengyang He, Tong Lin, Yan Zhao, Gang Li, Jing Qu, Lei Huang, Xue Peng, Deqi Liu
Summary: A novel method utilizing atmospheric air plasma treatment to prepare durable biphilic surface on cellulose filter paper has been reported. The as-prepared sample exhibited excellent separation performance for surfactant-stabilized water-in-oil emulsions, and showed durability against ultrasonication in acetone as well as recyclability for over 20 cycles. This study may provide a facile and environment-friendly approach to prepare filtering materials for highly efficient separation of water-in-oil emulsions.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Engineering, Environmental
Yuxiao Sun, Yi Liu, Zhendong Xue, Siyu Xia, Bowen Xu, Yuan Huang, Hualin Wang
Summary: A novel hydrocyclone-induced approach for filter media regeneration was proposed, and the feasibility and mechanism of oil desorption were explored. The effect of the hydrocyclone's structural and operation parameters on particle self-rotation was extensively analyzed, and its feasibility for oil desorption from the filter media was investigated. A hydrocyclone-intensified filtration method, combining filtration and hydrocyclone self-rotation regeneration, was proposed, and its effect on oily wastewater filtration was explored. The hydrocyclone-induced regeneration showed remarkable oil desorption efficiency, reducing the oil concentration in the filter media. The average effluent oil concentration in the raw oily wastewater was significantly reduced during pilot-scale tests, indicating the benefits of hydrocyclone regeneration for continuous oil-water separation.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Engineering, Environmental
Haifeng Gong, Xinxin Liang, Chen Huo, Ye Peng, Hong Yin, Bao Yu, Yan Pan, Yunqi Liu
Summary: The presence of solid particles in oil can cause surface failure of machine components. The electrostatic method is an efficient way to remove solid particles from oil. By studying a numerical model, it is found that the use of an electric field can significantly increase the filtration efficiency of mixed oil-solid systems, with an increase of at least 14.71% in filtration efficiency for every 1 kV/mm increase in electric field strength, up to a maximum of 97.65%.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2023)
Article
Polymer Science
Mateusz Kaminski, Jakub M. Gac, Piotr Sobiech, Pawel Kozikowski, Tomasz Jankowski
Summary: This study investigates the dynamics of pressure drop during the filtration of three-component mixture aerosols and compares them with two and single-component aerosols. The addition of a small quantity of liquid and solid particles during the filtration of aerosols containing water mist is of particular interest. The study also compares the calculations of filter mass change during oil aerosol filtration with experimental results.
Article
Engineering, Chemical
Feng Chen, Wenhan Yu, Zhongli Ji, Guangyao Lin, Haopeng Ding, Liming Pi, Xiaolin Wu
Summary: This study proposes three novel high-efficiency coalescence filter cartridges with improved filter material arrangements to capture high-concentration, small-sized oil mist droplets under complex industrial field conditions. Laboratory evaluations show that the filtration efficiency for droplets >0.2 pm can reach 99.99% with the use of a small pore size (1.5 pm) in the first layer of the cartridge. Field tests reveal that the proposed cartridges significantly reduce oil mist concentrations under different compressor modes compared to an existing commercial cartridge. Moreover, the proposed cartridges exhibit more stable filtering performance in long-cycle tests.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2022)
Article
Chemistry, Physical
Czeslaw Dembinski, Zbigniew Potok, Martin Kucerka, Richard Kminiak, Alena Ockajova, Tomasz Rogozinski
Summary: This study experimentally determined the relationship between the conditions of using non-woven fabric filter bags and the separation efficiency of wood dust generated in a furniture factory. The results showed that the separation efficiency of the filter bags increased with the working time. These findings are important for predicting the long-term separation efficiency of wood dust in furniture factories.
Article
Engineering, Chemical
Zhibao Li, Wei Qian, Yueliang Chen, Peng Xu, Jian Li, Jin Yang
Summary: Coal fly ash (CFA) was found to exhibit excellent separation capabilities for oil/water mixtures and emulsions without further chemical modification. Light and heavy oil/water immiscible mixtures can be completely separated through CFA with almost 99.9% efficiency, and various emulsions can also be purified with a separation efficiency of 99.5% and a flux of over 935 L m(-2) h(-1) using pre-wetted CFA.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2021)
Article
Materials Science, Multidisciplinary
Chen Li, Lipei Ren, Chunhua Zhang, Weilin Xu, Xin Liu
Summary: Polypropylene (PP) membrane is widely used in water purification due to its unique structure and excellent properties, but faces challenges in oil-water separation. Superhydrophilic and underwater superoleophobic PP membranes coated with TiO2 were prepared using atomic layer deposition, showing great potential in efficient oil-water separation.
ADVANCED FIBER MATERIALS
(2021)
Article
Engineering, Environmental
Jialong Chai, Guilong Wang, Aimin Zhang, Xinyang Li, Zhaorui Xu, Jinchuan Zhao, Guoqun Zhao
Summary: In the face of severe pollution in modern industry, membrane separation is widely used for cost-effective treatment of wasted solvents. However, the poor processability of microporous polytetrafluoroethylene (PTFE) membranes poses challenges for waste separation. This study proposes an innovative in-situ fibrillation methodology to prepare PTFE nanofibrous membranes with high porosity, fine pore size, and thin thickness. These membranes exhibit outstanding mechanical properties, chemical resistance, and anti-fouling behavior, making them suitable for fast separation or filtration in harsh solvents. The study achieves high separation efficiency and permeate fluxes driven by gravity and pressure, opening new avenues for the fabrication of robust and anticorrosive PTFE nanofibrous membranes with high separation efficiency.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Energy & Fuels
Laura L. Trinkies, Marlene Crone, Michael Tuerk, Manfred Kraut, Roland Dittmeyer
Summary: In this study, mono- and bimetallic Pd and Pt catalysts were deposited via supercritical fluid reactive deposition (SFRD) on TiO2 coated additively manufactured substrates. The focus of this work was to evaluate the suitability of these catalysts for the direct synthesis of H2O2 in the liquid phase. The results showed that all catalysts exhibited high activity and productivity, with PdPt bimetallic catalysts showing the highest productivity and an increase in Pd loading leading to a decrease in productivity. Comparison with literature data demonstrated the high suitability of the SFRD method for the proposed application, with the added benefits of simplicity and environmental friendliness in catalyst production.
CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION
(2024)
Article
Energy & Fuels
Xiongbao Hu, Zuguo Shen, Yu Wang
Summary: It is impossible to control the outer wall temperature of the micro-combustor below the maximum allowable temperature of commercial thermoelectric generators simply through increasing the equivalent heat transfer coefficient. Three simple strategies were developed to improve temperature uniformity, yet none of them could ensure full temperature control.
CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION
(2024)
