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Journal articles on the topic 'Membrane and separation technologies'

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Published: 4 June 2021
Last updated: 31 January 2023

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1

Ikeda, Masakazu. "Separation Technologies in Refineries and the Potential of Membrane–based Separation Technologies." MEMBRANE 40, no. 4 (2015): 201–4. http://dx.doi.org/10.5360/membrane.40.201.

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2

Talukder, Md Eman, Fariya Alam, Mst Monira Rahman Mishu, Md Nahid Pervez, Hongchen Song, Francesca Russo, Francesco Galiano, George K. Stylios, Alberto Figoli, and Vincenzo Naddeo. "Sustainable Membrane Technologies for by-Product Separation of Non-Pharmaceutical Common Compounds." Water 14, no. 24 (December 13, 2022): 4072. http://dx.doi.org/10.3390/w14244072.

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The Chinese pharmaceutical industry and traditional Chinese medicine (TCM) are both vital components of Chinese culture. Some traditional methods used to prepare TCMs have lost their conformity, and as a result, are producing lower-quality medicines. In this regard, the TCM sector has been looking for new ways to boost productivity and product quality. Membrane technology is environmentally-friendly, energy-saving technology, and more efficient than traditional technologies. Membrane separation is the most effective method for separating and cleaning the ingredients of the non-pharmaceutical common compounds from traditional Chinese medicine (TCM). Membrane technology is currently being employed for the concentration, purification, and separation of TCMs. This review paper discusses how membranes are fabricated and their role in non-pharmaceutical common compound separation and TCM purification. Accordingly, the membrane applicability and the technological advantage were also analyzed in non-pharmaceutical common compound separation. Researchers pay attention to the choice of membrane pore size when selecting membranes but often ignore the influence of membrane materials and membrane structure on separation, resulting in certain blindness in the membrane selection process.
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3

Jiang, Zhongyi, Liangyin Chu, Xuemei Wu, Zhi Wang, Xiaobin Jiang, Xiaojie Ju, Xuehua Ruan, and Gaohong He. "Membrane-based separation technologies: from polymeric materials to novel process: an outlook from China." Reviews in Chemical Engineering 36, no. 1 (December 18, 2019): 67–105. http://dx.doi.org/10.1515/revce-2017-0066.

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Abstract During the past two decades, research on membrane and membrane-based separation process has developed rapidly in water treatment, gas separation, biomedicine, biotechnology, chemical manufacturing and separation process integration. In China, remarkable progresses on membrane preparation, process development and industrial application have been made with the burgeoning of the domestic economy. This review highlights the recent development of advanced membranes in China, such as smart membranes for molecular-recognizable separation, ion exchange membrane for chemical productions, antifouling membrane for liquid separation, high-performance gas separation membranes and the high-efficiency hybrid membrane separation process design, etc. Additionally, the applications of advanced membranes, relevant devices and process design strategy in chemical engineering related fields are discussed in detail. Finally, perspectives on the future research directions, key challenges and issues in membrane separation are concluded.
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4

Wei, Yanying, Gongping Liu, Jianquan Luo, Libo Li, and Zhi Xu. "Novel membrane separation technologies and membrane processes." Frontiers of Chemical Science and Engineering 15, no. 4 (April 24, 2021): 717–19. http://dx.doi.org/10.1007/s11705-021-2053-y.

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5

SIRKAR, KAMALESH K. "MEMBRANE SEPARATION TECHNOLOGIES: CURRENT DEVELOPMENTS." Chemical Engineering Communications 157, no. 1 (March 1997): 145–84. http://dx.doi.org/10.1080/00986449708936687.

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6

Brunetti, A., F. Scura, G. Barbieri, and E. Drioli. "Membrane technologies for CO2 separation." Journal of Membrane Science 359, no. 1-2 (September 2010): 115–25. http://dx.doi.org/10.1016/j.memsci.2009.11.040.

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7

Kawamoto, Tohru. "Separation and Concentration as Nitrogen Circular Technologies." MEMBRANE 47, no. 4 (2022): 184–88. http://dx.doi.org/10.5360/membrane.47.184.

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8

Raza, Ayesha, Sarah Farrukh, Arshad Hussain, Imranullah Khan, Mohd Hafiz Dzarfan Othman, and Muhammad Ahsan. "Performance Analysis of Blended Membranes of Cellulose Acetate with Variable Degree of Acetylation for CO2/CH4 Separation." Membranes 11, no. 4 (March 29, 2021): 245. http://dx.doi.org/10.3390/membranes11040245.

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The separation and capture of CO2 have become an urgent and important agenda because of the CO2-induced global warming and the requirement of industrial products. Membrane-based technologies have proven to be a promising alternative for CO2 separations. To make the gas-separation membrane process more competitive, productive membrane with high gas permeability and high selectivity is crucial. Herein, we developed new cellulose triacetate (CTA) and cellulose diacetate (CDA) blended membranes for CO2 separations. The CTA and CDA blends were chosen because they have similar chemical structures, good separation performance, and its economical and green nature. The best position in Robeson’s upper bound curve at 5 bar was obtained with the membrane containing 80 wt.% CTA and 20 wt.% CDA, which shows the CO2 permeability of 17.32 barrer and CO2/CH4 selectivity of 18.55. The membrane exhibits 98% enhancement in CO2/CH4 selectivity compared to neat membrane with only a slight reduction in CO2 permeability. The optimal membrane displays a plasticization pressure of 10.48 bar. The newly developed blended membranes show great potential for CO2 separations in the natural gas industry.
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9

Badwal, S. P. S., and F. T. Ciacchi. "Ceramic Membrane Technologies for Oxygen Separation." Advanced Materials 13, no. 12-13 (July 2001): 993–96. http://dx.doi.org/10.1002/1521-4095(200107)13:12/13<993::aid-adma993>3.0.co;2-#.

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10

Shekhah, Osama, Valeriya Chernikova, Youssef Belmabkhout, and Mohamed Eddaoudi. "Metal–Organic Framework Membranes: From Fabrication to Gas Separation." Crystals 8, no. 11 (October 31, 2018): 412. http://dx.doi.org/10.3390/cryst8110412.

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Gas membrane-based separation is considered one of the most effective technologies to address energy efficiency and large footprint challenges. Various classes of advanced materials, including polymers, zeolites, porous carbons, and metal–organic frameworks (MOFs) have been investigated as potential suitable candidates for gas membrane-based separations. MOFs possess a uniquely tunable nature in which the pore size and environment can be controlled by connecting metal ions (or metal ion clusters) with organic linkers of various functionalities. This unique characteristic makes them attractive for the fabrication of thin membranes, as both the diffusion and solubility components of permeability can be altered. Numerous studies have been published on the synthesis and applications of MOFs, as well as the fabrication of MOF-based thin films. However, few studies have addressed their gas separation properties for potential applications in membrane-based separation technologies. Here, we present a synopsis of the different types of MOF-based membranes that have been fabricated over the past decade. In this review, we start with a short introduction touching on the gas separation membrane technology. We also shed light on the various techniques developed for the fabrication of MOF as membranes, and the key challenges that still need to be tackled before MOF-based membranes can successfully be used in gas separation and implemented in an industrial setting.
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11

Asim Mushtaq, Asim Mushtaq, and Hilmi Mukhtar and Azmi Mohd Shariff Hilmi Mukhtar and Azmi Mohd Shariff. "Recent Development of Enhanced Polymeric Blend Membranes in Gas Separation: A Review." Journal of the chemical society of pakistan 42, no. 2 (2020): 282. http://dx.doi.org/10.52568/000635.

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Natural gas is the most rapid growing energy sources around the world. The presence of CO2 in natural gas lowers its calorific value and purification of a natural gas by removing CO2 is an essential process to increase its value. Several separation technologies are used to remove acidic gases like H2S and CO2 from natural gas. Among these technologies, membrane process is a feasible energy saving alternate to CO2 capture. The three types of membrane include polymeric, inorganic and mixed matrix membranes. Currently, polymer membranes and inorganic membranes were considered for gas separation, but inorganic membranes are too costly. Even mixed matrix membrane performance suffered defects caused by poor glassy polymer and particle interactions. Pure glassy and pure rubbery are problematic due to their instructive properties. The blending of glassy with rubbery polymers improve membrane properties for gas separation. To enhance the compatibility of the polymer blend, a third component is added such as alkanol amines. Although, the enhanced polymeric blend membranes have many advantages in terms of permeance, selectivity, thermal and chemical stability. Polymer blending also offers an effective technique to synthesize membranes with desirable properties.
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12

Asim Mushtaq, Asim Mushtaq, and Hilmi Mukhtar and Azmi Mohd Shariff Hilmi Mukhtar and Azmi Mohd Shariff. "Recent Development of Enhanced Polymeric Blend Membranes in Gas Separation: A Review." Journal of the chemical society of pakistan 42, no. 2 (2020): 282. http://dx.doi.org/10.52568/000635/jcsp/42.02.2020.

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Natural gas is the most rapid growing energy sources around the world. The presence of CO2 in natural gas lowers its calorific value and purification of a natural gas by removing CO2 is an essential process to increase its value. Several separation technologies are used to remove acidic gases like H2S and CO2 from natural gas. Among these technologies, membrane process is a feasible energy saving alternate to CO2 capture. The three types of membrane include polymeric, inorganic and mixed matrix membranes. Currently, polymer membranes and inorganic membranes were considered for gas separation, but inorganic membranes are too costly. Even mixed matrix membrane performance suffered defects caused by poor glassy polymer and particle interactions. Pure glassy and pure rubbery are problematic due to their instructive properties. The blending of glassy with rubbery polymers improve membrane properties for gas separation. To enhance the compatibility of the polymer blend, a third component is added such as alkanol amines. Although, the enhanced polymeric blend membranes have many advantages in terms of permeance, selectivity, thermal and chemical stability. Polymer blending also offers an effective technique to synthesize membranes with desirable properties.
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13

Mubashir, Muhammad, Yeong Yin Fong, Lau Kok Keong, and Mohd Azmi Bin Sharrif. "Synthesis and Performance of Deca- Dodecasil 3 Rhombohedral (DDR)-Type Zeolite Membrane In CO2 Separation– A Review." ASEAN Journal of Chemical Engineering 14, no. 2 (March 19, 2015): 48. http://dx.doi.org/10.22146/ajche.49708.

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CO2 capture technologies including absorption, adsorption, and cryogenic distillation are reported. Conventional technologies for CO2 separation from natural gas have several disadvantages including high cost, high maintenance, occupy more space and consume high energy. Thus, membrane technology is introduced to separate CO2 due to their several advantages over conventional separation techniques. Inorganic membranes exhibit high thermal stability, chemical stability, permeability and selectivity for CO2 and CH4 separation as compared to other type of membranes. Zeolite membranes are potential for CO2 separation due to their characteristics such as, well define the pore structure and molecular sieving property. Among the zeolite membranes, DDR membranes exhibit highest selectivity for CO2 and CH4 separation. DDR membranes are synthesized by conventional hydrothermal and secondary growth methods. These methods required very long synthesis duration (25 days) due to extremely low nucleation and crystal growth rate of DDR zeolite. In this review, synthesis and performance of DDR membrane in CO2 separation from CH4 reported by various researchers are discussed. Challenges and upcoming guidelines related to the synthesis DDR membrane and performance of DDR membrane also included.
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14

Siagian, Utjok W. R., Anggit Raksajati, Nurul F. Himma, K. Khoiruddin, and I. G. Wenten. "Membrane-based carbon capture technologies: Membrane gas separation vs. membrane contactor." Journal of Natural Gas Science and Engineering 67 (July 2019): 172–95. http://dx.doi.org/10.1016/j.jngse.2019.04.008.

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15

Chen, Xiao Yuan, Hoang Vinh-Thang, Antonio Avalos Ramirez, Denis Rodrigue, and Serge Kaliaguine. "Membrane gas separation technologies for biogas upgrading." RSC Advances 5, no. 31 (2015): 24399–448. http://dx.doi.org/10.1039/c5ra00666j.

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16

Jelen, P. "Membrane filtration and related molecular separation technologies." International Dairy Journal 12, no. 1 (January 2002): 81. http://dx.doi.org/10.1016/s0958-6946(01)00167-4.

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17

Guha, A. K., P. V. Shanbhag, K. K. Sirkar, C. H. Yun, D. Trivedi, and D. Vaccari. "Novel membrane-based separation and oxidation technologies." Waste Management 13, no. 5-7 (January 1993): 395–401. http://dx.doi.org/10.1016/0956-053x(93)90072-5.

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18

Han, Yang, and Zhien Zhang. "Nanostructured Membrane Materials for CO2 Capture: A Critical Review." Journal of Nanoscience and Nanotechnology 19, no. 6 (June 1, 2019): 3173–79. http://dx.doi.org/10.1166/jnn.2019.16584.

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To mitigate carbon emission from the combustion of fossil fuels, membrane is advantageous due to the fact that membrane is a thin interphase acting as a selective barrier separating two phases. This thinness, typically in the range of 100 nm to a few micrometers, provides an almost natural platform to implement functional nanostructures. In this review, the recent progress in nanostructured membrane materials for CO2 capture will be discussed, including applications in flue gas decarbonizing (CO2/N2 separation) and syngas purification (CO2/H2 separation). In addition, the fundamentals of membrane technologies are also introduced. The reviewed nanostructure formation is confined to solid state materials, including polymer with intrinsic microporosity, carbon-based membranes, zeolite, and metal organic framework.
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19

Himma, Nurul F., Anita K. Wardani, Nicholaus Prasetya, Putu T. P. Aryanti, and I. Gede Wenten. "Recent progress and challenges in membrane-based O2/N2 separation." Reviews in Chemical Engineering 35, no. 5 (July 26, 2019): 591–625. http://dx.doi.org/10.1515/revce-2017-0094.

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AbstractCompared with current conventional technologies, oxygen/nitrogen (O2/N2) separation using membrane offers numerous advantages, especially in terms of energy consumption, footprint, and capital cost. However, low product purity still becomes the major challenge for commercialization of membrane-based technologies. Therefore, numerous studies on membrane development have been conducted to improve both membrane properties and separation performance. Various materials have been developed to obtain membranes with high O2permeability and high O2/N2selectivity, including polymer, inorganic, and polymer-inorganic composite materials. The results showed that most of the polymer membranes are suitable for production of low to moderate purity O2and for production of high-purity N2. Meanwhile, perovskite membrane can be used to produce a high-purity oxygen. Furthermore, the developments of O2/N2separation using membrane broaden the applications of oxygen enrichment for oxy-combustion, gasification, desulfurization, and intensification of air oxidation reactions, while nitrogen enrichment is also important for manufacturing pressure-sensitive adhesive and storing and handling free-radical polymerization monomers.
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20

Lemmer, Balázs, Szabolcs Kertész, Gábor Keszthelyi-Szabó, Kerime Özel, and Cecilia Hodúr. "Sonicated membrane separation." Progress in Agricultural Engineering Sciences 14, s1 (July 2018): 89–99. http://dx.doi.org/10.1556/446.14.2018.s1.9.

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Membrane separation processes are currently proven technologies in many areas. The main limitation of these processes is the accumulation of matter at the membrane surface which leads to two phenomena: concentration polarization and membrane fouling. According to the publications of numerous authors permeate flux could be increased by sonication. Our work focuses on separation of real broth by sonicated ultrafiltration. The broth was originated from hydrolysis of grounded corn-cob by xylanase enzyme. The filtration was carried out in a laboratory batch stirred cell with a sonication rod sonicator. In our work the effect of the stirring, the intensity of sonication and the membrane-transducer distance was studied on the efficiency of the ultrafiltration and on the quality of separated enzymes. Results reveal that xylanase enzyme can be effectively separated from real fermentation broth by ultrafiltration and enzymes keep their activity after the process. Enzyme activity tests show that low energy sonication is not harmful to the enzyme.
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21

Siekierka, Anna, Katarzyna Smolińska-Kempisty, and Joanna Wolska. "Enhanced Specific Mechanism of Separation by Polymeric Membrane Modification—A Short Review." Membranes 11, no. 12 (November 29, 2021): 942. http://dx.doi.org/10.3390/membranes11120942.

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Membrane technologies have found a significant application in separation processes in an exceeding range of industrial fields. The crucial part that is decided regarding the efficiency and effectivity of separation is the type of membrane. The membranes deal with separation problems, working under the various mechanisms of transportation of selected species. This review compares significant types of entrapped matter (ions, compounds, and particles) within membrane technology. The ion-exchange membranes, molecularly imprinted membranes, smart membranes, and adsorptive membranes are investigated. Here, we focus on the selective separation through the above types of membranes and detect their preparation methods. Firstly, the explanation of transportation and preparation of each type of membrane evaluated is provided. Next, the working and application phenomena are evaluated. Finally, the review discusses the membrane modification methods and briefly provides differences in the properties that occurred depending on the type of materials used and the modification protocol.
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22

MacNeil, Janet Corson, and Ulric P. Gibson. "Membrane separation technologies for treatment of hazardous wastes." Critical Reviews in Environmental Control 18, no. 2 (January 1988): 91–131. http://dx.doi.org/10.1080/10643388809388344.

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23

Kislik, V. S., and A. M. Eyal. "Hybrid liquid membrane (HLM) system in separation technologies." Journal of Membrane Science 111, no. 2 (March 1996): 259–72. http://dx.doi.org/10.1016/0376-7388(95)00258-8.

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24

Badwal, Sukhvinder P. S., and Fabio T. Ciacchi. "ChemInform Abstract: Ceramic Membrane Technologies for Oxygen Separation." ChemInform 32, no. 35 (May 25, 2010): no. http://dx.doi.org/10.1002/chin.200135269.

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25

Badwal, S. P. S., and F. T. Ciacchi. "ChemInform Abstract: Ceramic Membrane Technologies for Gas Separation." ChemInform 32, no. 38 (May 24, 2010): no. http://dx.doi.org/10.1002/chin.200138246.

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26

Wang, Luchen, Yan Wang, Lianying Wu, and Gang Wei. "Fabrication, Properties, Performances, and Separation Application of Polymeric Pervaporation Membranes: A Review." Polymers 12, no. 7 (June 30, 2020): 1466. http://dx.doi.org/10.3390/polym12071466.

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Membrane separation technologies have attracted great attentions in chemical engineering, food science, analytical science, and environmental science. Compared to traditional membrane separation techniques like reverse osmosis (RO), ultrafiltration (UF), electrodialysis (ED) and others, pervaporation (PV)-based membrane separation shows not only mutual advantages such as small floor area, simplicity, and flexibility, but also unique characteristics including low cost as well as high energy and separation efficiency. Recently, different polymer, ceramic and composite membranes have shown promising separation applications through the PV-based techniques. To show the importance of PV for membrane separation applications, we present recent advances in the fabrication, properties and performances of polymeric membranes for PV separation of various chemicals in petrochemical, desalination, medicine, food, environmental protection, and other industrial fields. To promote the easy understanding of readers, the preparation methods and the PV separation mechanisms of various polymer membranes are introduced and discussed in detail. This work will be helpful for developing novel functional polymer-based membranes and facile techniques to promote the applications of PV techniques in different fields.
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27

Chuah, Chong Yang, Xu Jiang, Kunli Goh, and Rong Wang. "Recent Progress in Mixed-Matrix Membranes for Hydrogen Separation." Membranes 11, no. 9 (August 30, 2021): 666. http://dx.doi.org/10.3390/membranes11090666.

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Membrane separation is a compelling technology for hydrogen separation. Among the different types of membranes used to date, the mixed-matrix membranes (MMMs) are one of the most widely used approaches for enhancing separation performances and surpassing the Robeson upper bound limits for polymeric membranes. In this review, we focus on the recent progress in MMMs for hydrogen separation. The discussion first starts with a background introduction of the current hydrogen generation technologies, followed by a comparison between the membrane technology and other hydrogen purification technologies. Thereafter, state-of-the-art MMMs, comprising emerging filler materials that include zeolites, metal-organic frameworks, covalent organic frameworks, and graphene-based materials, are highlighted. The binary filler strategy, which uses two filler materials to create synergistic enhancements in MMMs, is also described. A critical evaluation on the performances of the MMMs is then considered in context, before we conclude with our perspectives on how MMMs for hydrogen separation can advance moving forward.
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28

Han, Yang, Yutong Yang, and W. S. Winston Ho. "Recent Progress in the Engineering of Polymeric Membranes for CO2 Capture from Flue Gas." Membranes 10, no. 11 (November 23, 2020): 365. http://dx.doi.org/10.3390/membranes10110365.

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CO2 capture from coal- or natural gas-derived flue gas has been widely considered as the next opportunity for the large-scale deployment of gas separation membranes. Despite the tremendous progress made in the synthesis of polymeric membranes with high CO2/N2 separation performance, only a few membrane technologies were advanced to the bench-scale study or above from a highly idealized laboratory setting. Therefore, the recent progress in polymeric membranes is reviewed in the perspectives of capture system energetics, process synthesis, membrane scale-up, modular fabrication, and field tests. These engineering considerations can provide a holistic approach to better guide membrane research and accelerate the commercialization of gas separation membranes for post-combustion carbon capture.
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29

Morais, Ana, Belen Batanero, Patrícia Rijo, and Marisa Nicolai. "Ionic exchange membranes in the pharmaceutical industry – Review." Journal Biomedical and Biopharmaceutical Research 19, no. 1 (July 2022): 1–32. http://dx.doi.org/10.19277/bbr.19.1.285.

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In line with the longer life expectancy, the pharmaceutical sector, responsible for the continuous development, production and supply of new drugs to cope with the population’s healthcare, has been consistently growing. This scenario illustrates the use of some innovative technologies in industrial processes as the major contributing factor. Amongst these technologies, membrane separation technology stands out. This technique affords the filtration and separation of biological molecules at the nanoscale, resulting in a more expedited manufacturing process and a higher purified end product. Depending on the driving force applied, the separation process involves different approaches, feed stages, different pores’ sizes or permeates. In the scope of membrane separation technology, electrodialysis (ED) uses an electrical potential difference as the driving force to separate ions based on their charge. In this sense, ion-exchange membranes are the most widely used separation materials in purifying systems as they have the advantage of partitioning species of different charges. The present study evaluates two ion-exchange membranes' aptitude as separators for ED filtration of some industrial chemical processes. Keywords: Ionic-exchange membranes, separation technology, pharmaceutical industry wastewater treatment, electrodialysis
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30

Nallathambi, Gobi, and Hazel Dhinakaran. "Multilayer Polymeric Nano composite Membrane for Oxygen Separation." Bulletin of Scientific Research 1, no. 2 (November 16, 2019): 1–11. http://dx.doi.org/10.34256/bsr1921.

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Air separation is a process of separating primary components from the atmospheric air. Development of membrane technologies plays a key role in air separation. Multi-layer polymeric nanocomposite membranes have been developed by a novel technique using Polyacrylonitrile (PAN) and cellulose acetate (CA) along with nano silica particles (SiO2) to obtain a higher oxygen selectivity and permeability. For the construction of the multilayer membrane, the Box-Behnken design has been used by employing three independent variables namely PAN Electro spinning time, the SiO2 percentage in the PAN polymer and CA/PEG polymer concentration. The developed membranes have been characterized for its surface morphology and physical properties. Along with the analysis of compound desirability, the results were also subject to statistical analysis in order to form regression equations. The electro spun fiber diameter increases along with the concentration of SiO2 nanoparticles and the range is from 50 nm to 400 nm. Moreover, the maximum pore size on the surface of the membrane lies between 200 to 400 nm whereas the maximum percentage of oxygen purity obtained is 48 with the permeate flux of 5.45 cm3/cm2/min.
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31

Parani, Sundararajan, and Oluwatobi Samuel Oluwafemi. "Membrane Distillation: Recent Configurations, Membrane Surface Engineering, and Applications." Membranes 11, no. 12 (November 26, 2021): 934. http://dx.doi.org/10.3390/membranes11120934.

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Membrane distillation (MD) is a developing membrane separation technology for water treatment that involves a vapor transport driven by the vapor pressure gradient across the hydrophobic membrane. MD has gained wide attention in the last decade for various separation applications, including the separation of salts, toxic heavy metals, oil, and organic compounds from aqueous solutions. Compared with other conventional separation technologies such as reverse osmosis, nanofiltration, or thermal distillation, MD is very attractive due to mild operating conditions such as low temperature and atmospheric pressure, and 100% theoretical salt rejection. In this review, membrane distillation’s principles, recent MD configurations with their advantages and limitations, membrane materials, fabrication of membranes, and their surface engineering for enhanced hydrophobicity are reviewed. Moreover, different types of membrane fouling and their control methods are discussed. The various applications of standalone MD and hybrid MD configurations reported in the literature are detailed. Furthermore, studies on the MD-based pilot plants installed around the world are covered. The review also highlights challenges in MD performance and future directions.
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32

Chen, Dengyue, Kamalesh K. Sirkar, Chi Jin, Dhananjay Singh, and Robert Pfeffer. "Membrane-Based Technologies in the Pharmaceutical Industry and Continuous Production of Polymer-Coated Crystals/Particles." Current Pharmaceutical Design 23, no. 2 (February 13, 2017): 242–49. http://dx.doi.org/10.2174/1381612822666161025145229.

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Background: Membrane technologies are of increasing importance in a variety of separation and purification applications involving liquid phases and gaseous mixtures. Although the most widely used applications at this time are in water treatment including desalination, there are many applications in chemical, food, healthcare, paper and petrochemical industries. This brief review is concerned with existing and emerging applications of various membrane technologies in the pharmaceutical and biopharmaceutical industry. Methods: The goal of this review article is to identify important membrane processes and techniques which are being used or proposed to be used in the pharmaceutical and biopharmaceutical operations. How novel membrane processes can be useful for delivery of crystalline/particulate drugs is also of interest. Results: Membrane separation technologies are extensively used in downstream processes for bio-pharmaceutical separation and purification operations via microfiltration, ultrafiltration and diafiltration. Also the new technique of membrane chromatography allows efficient purification of monoclonal antibodies. Membrane filtration techniques of reverse osmosis and nanofiltration are being combined with bioreactors and advanced oxidation processes to treat wastewaters from pharmaceutical plants. Nanofiltration with organic solvent-stable membranes can implement solvent exchange and catalyst recovery during organic solvent-based drug synthesis of pharmaceutical compounds/intermediates. Membranes in the form of hollow fibers can be conveniently used to implement crystallization of pharmaceutical compounds. The novel crystallization methods of solid hollow fiber cooling crystallizer (SHFCC) and porous hollow fiber anti-solvent crystallization (PHFAC) are being developed to provide efficient methods for continuous production of polymer-coated drug crystals in the area of drug delivery. Conclusion: This brief review provides a general introduction to various applications of membrane technologies in the pharmaceutical/biopharmaceutical industry with special emphasis on novel membrane techniques for pharmaceutical applications. The method of coating a drug particle with a polymer using the SHFCC method is stable and ready for scale-up for operation over an extended period.
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33

Chen, Xiao Yuan, Anguo Xiao, and Denis Rodrigue. "Polymer based membranes for propylene/propane separation: CMS, MOF and polymer electrolyte membranes." AIMS Materials Science 9, no. 2 (2022): 184–213. http://dx.doi.org/10.3934/matersci.2022012.

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<abstract> <p>Propylene/propane separations are generally performed by distillation which are energy intensive and costly to build and operate. There is therefore high interest to develop new separation technologies like membrane modules. In our previous paper, we collected, analyzed and reported data for neat polymers and mixed matrix membranes (MMM) based on flat and hollow fiber configurations for propylene/propane separations. In this second part, we collected the data for carbon molecular sieving (CMS) membranes from polymer pyrolysis reaction and metal-organic framework (MOF) membranes from different fabrication methods, as well as data on facilitated transport membrane-polymer electrolyte membranes (PEM). CMS membranes show great potential for C<sub>3</sub>H<sub>6</sub>/C<sub>3</sub>H<sub>8</sub> separation with an optimum pyrolysis temperature around 500–600 ℃. However, physical aging is a concern as the micro-pores shrink over time leading to lower permeability. The performance of MOF membranes are above the 2020 upper bound of polymer-based membranes, but have limited commercial application because they are fragile and difficult to produce. Finally, facilitated transport membranes show excellent propylene/propane separation performance, but are less stable compared to commercial polymeric membranes limiting their long-term operation and practical applications. As usual, there is no universal membrane and the selection must be made based on the operating conditions.</p> </abstract>
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34

Zhu, Xiaoying, and Renbi Bai. "Separation of Biologically Active Compounds by Membrane Operations." Current Pharmaceutical Design 23, no. 2 (February 13, 2017): 218–30. http://dx.doi.org/10.2174/1381612822666161027153823.

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Background: Bioactive compounds from various natural sources have been attracting more and more attention, owing to their broad diversity of functionalities and availabilities. However, many of the bioactive compounds often exist at an extremely low concentration in a mixture so that massive harvesting is needed to obtain sufficient amounts for their practical usage. Thus, effective fractionation or separation technologies are essential for the screening and production of the bioactive compound products. The applicatons of conventional processes such as extraction, distillation and lyophilisation, etc. may be tedious, have high energy consumption or cause denature or degradation of the bioactive compounds. Membrane separation processes operate at ambient temperature, without the need for heating and therefore with less energy consumption. The “cold” separation technology also prevents the possible degradation of the bioactive compounds. The separation process is mainly physical and both fractions (permeate and retentate) of the membrane processes may be recovered. Thus, using membrane separation technology is a promising approach to concentrate and separate bioactive compounds. Methods: A comprehensive survey of membrane operations used for the separation of bioactive compounds is conducted. The available and established membrane separation processes are introduced and reviewed. Results: The most frequently used membrane processes are the pressure driven ones, including microfiltration (MF), ultrafiltration (UF) and nanofiltration (NF). They are applied either individually as a single sieve or in combination as an integrated membrane array to meet the different requirements in the separation of bioactive compounds. Other new membrane processes with multiple functions have also been developed and employed for the separation or fractionation of bioactive compounds. The hybrid electrodialysis (ED)-UF membrane process, for example has been used to provide a solution for the separation of biomolecules with similar molecular weights but different surface electrical properties. In contrast, the affinity membrane technology is shown to have the advantages of increasing the separation efficiency at low operational pressures through selectively adsorbing bioactive compounds during the filtration process. Conclusion: Individual membranes or membrane arrays are effectively used to separate bioactive compounds or achieve multiple fractionation of them with different molecule weights or sizes. Pressure driven membrane processes are highly efficient and widely used. Membrane fouling, especially irreversible organic and biological fouling, is the inevitable problem. Multifunctional membranes and affinity membranes provide the possibility of effectively separating bioactive compounds that are similar in sizes but different in other physical and chemical properties. Surface modification methods are of great potential to increase membrane separation efficiency as well as reduce the problem of membrane fouling. Developing membranes and optimizing the operational parameters specifically for the applications of separation of various bioactive compounds should be taken as an important part of ongoing or future membrane research in this field.
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Bazhenov, Stepan D., Alexandr V. Bildyukevich, and Alexey V. Volkov. "Gas-Liquid Hollow Fiber Membrane Contactors for Different Applications." Fibers 6, no. 4 (October 10, 2018): 76. http://dx.doi.org/10.3390/fib6040076.

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Gas-liquid membrane contactors that were based on hollow fiber membranes are the example of highly effective hybrid separation processes in the field of membrane technology. Membranes provide a fixed and well-determined interface for gas/liquid mass transfer without dispensing one phase into another while their structure (hollow fiber) offers very large surface area per apparatus volume resulted in the compactness and modularity of separation equipment. In many cases, stated benefits are complemented with high separation selectivity typical for absorption technology. Since hollow fiber membrane contactors are agreed to be one of the most perspective methods for CO2 capture technologies, the major reviews are devoted to research activities within this field. This review is focused on the research works carried out so far on the applications of membrane contactors for other gas-liquid separation tasks, such as water deoxygenation/ozonation, air humidity control, ethylene/ethane separation, etc. A wide range of materials, membranes, and liquid solvents for membrane contactor processes are considered. Special attention is given to current studies on the capture of acid gases (H2S, SO2) from different mixtures. The examples of pilot-scale and semi-industrial implementation of membrane contactors are given.
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36

Hubadillah, Siti Khadijah. "Book Review: Advanced and Hybrid Membranes for Wastewater Treatment." Journal of Applied Membrane Science & Technology 26, no. 1 (February 23, 2022): 39–140. http://dx.doi.org/10.11113/amst.v26n1.223.

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The interesting part of this recent published book is that it offers better understanding on the mechanism of wastewater treatment for membrane technologies, current information about technologies and limitation of wastewater treatment, recent discovered solutions from experts for wastewater treatment and information on weaknesses and solution to membrane technologies. There are 10 chapters in which wrote by the membrane expertise covering the recent progress and development of the various membrane technologies towards water and wastewater treatment. In chapter 1, overview of wastewater treatment including conventional treatment such as ion-exchange, coagulation-flocculation and adsorption has been discussed. At the end of the chapter, membrane technology and its advantages has been introduced. Chapter 2 discussed the conventional technology stated in Chapter 1 in detail. In the chapter, the advantages and disadvantages of the conventional technologies has also been stated. Example of the advantages are including depending on pH and slow process. Chapter 3 provide an insight in the recent advanced separation technology for wastewater treatment such as hybrid adsorption-separation application that can be achieved by membrane technology and membrane distillation application. Meanwhile, Chapter 4 addressed in detail the recent progress of adsorptive ultrafiltration mixed matrix membrane for heavy metals removal such as zinc, nickel and chromium. In chapter 5, photocatalytic membrane has been introduced in the chapter with the brief mechanism on the photocatalytic activity has also been explained. Chapter 6 focussed on the membrane distillation for wastewater treatment. In the chapter, various membrane distillation type has been stated with example of recent works such as direct contact membrane distillation (DCMD), air gap membrane distillation (AGMD), vapour membrane distillation (VMD) and sweeping gas membrane distillation (SGMD). In Chapter 7, integrated forward osmosis processes have been described such as FO-MD, FO-RO or both. Chapter 8 introduced ceramic membrane technology to the readers in the book with new alternative material in production of low-cost ceramic membrane. In Chapter 9, recent works on metal organic framework (MOF) including MOF membrane for wastewater separation has been explained. In the last Chapter 10, some potential solution to overcome weaknesses of advanced membranes technologies for wastewater treatment are also discussed. Future recommendation for these technologies is also discussed at the end of the book. This book focused on the collection of recent progress related to advanced membrane technologies towards water and wastewater treatment, for example forward osmosis and membrane distillation. This book has been written by membrane experts from Malaysia and India, providing an insight of recent progress on advanced membrane technologies. This book will be the vital references for the researchers, students, membrane technologist, membrane manufacturer and academicians. Some improvement can be made by adding several interesting topics such as incorporation of waste inorganic materials into polymeric membranes and commercial ceramic membrane that made up from alumina and titania. In addition, some integrated technologies combining two advanced membrane technologies such as integrated forward osmosis and membrane distillation can be interesting if discussed.
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37

Lv, Yue Xia, Gui Huan Yan, Chong Qing Xu, Min Xu, and Liang Sun. "Review on Membrane Technologies for Carbon Dioxide Capture from Power Plant Flue Gas." Advanced Materials Research 602-604 (December 2012): 1140–44. http://dx.doi.org/10.4028/www.scientific.net/amr.602-604.1140.

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Membrane technology is a promising alternative to conventional technologies for the mitigation of CO2from power plant flue gas due to its engineering and economic advantages. In this paper, CO2post combustion capture by gas separation membranes and gas absorption membranes was extensively summarized and reviewed. In addition, advantages and disadvantages of the technology, current status and future research direction of membrane technology for CO2capture from power plant flue gas were briefly prospected and discussed.
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38

Smith, Stefan J. D., Cher Hon Lau, James I. Mardel, Melanie Kitchin, Kristina Konstas, Bradley P. Ladewig, and Matthew R. Hill. "Physical aging in glassy mixed matrix membranes; tuning particle interaction for mechanically robust nanocomposite films." Journal of Materials Chemistry A 4, no. 27 (2016): 10627–34. http://dx.doi.org/10.1039/c6ta02603f.

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39

Borpatra Gohain, Moucham, Sachin Karki, Diksha Yadav, Archana Yadav, Neha R. Thakare, Swapnali Hazarika, Hyung Keun Lee, and Pravin G. Ingole. "Development of Antifouling Thin-Film Composite/Nanocomposite Membranes for Removal of Phosphate and Malachite Green Dye." Membranes 12, no. 8 (August 7, 2022): 768. http://dx.doi.org/10.3390/membranes12080768.

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Nowadays polymer-based thin film nanocomposite (TFN) membrane technologies are showing key interest to improve the separation properties. TFN membranes are well known in diverse fields but developing highly improved TFN membranes for the removal of low concentration solutions is the main challenge for the researchers. Application of functional nanomaterials, incorporated in TFN membranes provides better performance as permeance and selectivity. The polymer membrane-based separation process plays an important role in the chemical industry for the isolation of products and recovery of different important types of reactants. Due to the reduction in investment, less operating costs and safety issues membrane methods are mainly used for the separation process. Membranes do good separation of dyes and ions, yet their separation efficiency is challenged when the impurity is in low concentration. Herewith, we have developed, UiO-66-NH2 incorporated TFN membranes through interfacial polymerization between piperazine (PIP) and trimesoyl chloride (TMC) for separating malachite green dye and phosphate from water in their low concentration. A comparative study between thin-film composite (TFC) and TFN has been carried out to comprehend the benefit of loading nanoparticles. To provide mechanical strength to the polyamide layer ultra-porous polysulfone support was made through phase inversion. As a result, outstanding separation values of malachite green (MG) 91.90 ± 3% rejection with 13.32 ± 0.6 Lm−2h−1 flux and phosphate 78.36 ± 3% rejection with 22.22 ± 1.1 Lm−2h−1 flux by TFN membrane were obtained. The antifouling tendency of the membranes was examined by using bovine serum albumin (BSA)-mixed feed and deionized water, the study showed a good ~84% antifouling tendency of TFN membrane with a small ~14% irreversible fouling. Membrane’s antibacterial test against E. coli. and S. aureus. also revealed that the TFN membrane possesses antibacterial activity as well. We believe that the present work is an approach to obtaining good results from the membranes under tricky conditions.
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40

Ødegaard, H., S. Østerhus, E. Melin, and B. Eikebrokk. "NOM removal technologies – Norwegian experiences." Drinking Water Engineering and Science Discussions 2, no. 2 (October 9, 2009): 161–87. http://dx.doi.org/10.5194/dwesd-2-161-2009.

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Abstract. The paper gives an overview of the methods for removal of natural organic matter (NOM), particularly humic substances (HS), in water with focus on the Norwegian experiences. It is demonstrated that humic substances may be removed by a variety of methods, such as; molecular sieving through nanofiltration membranes, coagulation with subsequent floc separation (including granular media or membrane filtration), oxidation followed by biofiltration and sorption processes including chemisorption (ion exchange) and physical adsorption (activated carbon). All these processes are in use in Norway and the paper gives an overview of the operational experiences.
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41

Singla, Shelly, Nagaraj P. Shetti, Soumen Basu, Kunal Mondal, and Tejraj M. Aminabhavi. "Hydrogen production technologies - Membrane based separation, storage and challenges." Journal of Environmental Management 302 (January 2022): 113963. http://dx.doi.org/10.1016/j.jenvman.2021.113963.

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42

Liang, Bin, Xiao He, Junjun Hou, Lianshan Li, and Zhiyong Tang. "Membrane Separation in Organic Liquid: Technologies, Achievements, and Opportunities." Advanced Materials 31, no. 45 (December 20, 2018): 1806090. http://dx.doi.org/10.1002/adma.201806090.

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43

Alen, Saif Khan, SungWoo Nam, and Seyed A. Dastgheib. "Recent Advances in Graphene Oxide Membranes for Gas Separation Applications." International Journal of Molecular Sciences 20, no. 22 (November 9, 2019): 5609. http://dx.doi.org/10.3390/ijms20225609.

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Graphene oxide (GO) can dramatically enhance the gas separation performance of membrane technologies beyond the limits of conventional membrane materials in terms of both permeability and selectivity. Graphene oxide membranes can allow extremely high fluxes because of their ultimate thinness and unique layered structure. In addition, their high selectivity is due to the molecular sieving or diffusion effect resulting from their narrow pore size distribution or their unique surface chemistry. In the first part of this review, we briefly discuss different mechanisms of gas transport through membranes, with an emphasis on the proposed mechanisms for gas separation by GO membranes. In the second part, we review the methods for GO membrane preparation and characterization. In the third part, we provide a critical review of the literature on the application of different types of GO membranes for CO2, H2, and hydrocarbon separation. Finally, we provide recommendations for the development of high-performance GO membranes for gas separation applications.
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44

Padaki, Mahesh, Chitrakar Hegde, and Arun Mohan Isloor. "Synthesis, Characterization & Impedance Studies of some New Nano Filtration Membranes." Materials Science Forum 657 (July 2010): 26–34. http://dx.doi.org/10.4028/www.scientific.net/msf.657.26.

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In the recent years membrane technology has gained significant attention from polymer chemists all around the world due to their attractive features such as efficiency, low costs, low energy costs and as effective solutions to longstanding problems in the chemical industries. Membrane technologies have been widely applied in the separation of liquids and even gases. Many separation problems can be solved economically by nanofiltration alone or in combination with other separation processes. This study aimed to synthesize polysulfone based nanofiltration membranes using DIPS (diffusion induced phase separation) technique. Newly synthesized polymer membranes were subjected to Infra red spectral and water uptake studies. Membranes were also characterized using electrochemical spectroscopy for their proton conducting property. Their surface morphology is visualized by SEM.
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45

Blahopoluchna, A. H., V. H. Parakhnenko, and N. O. Liakhovska. "APPLICATION OF ECONOMIC EVALUATION OF MEMBRANE TECHNOLOGIES FOR WASTEWATER TREATMENT." Economies' Horizons, no. 2(20) (June 30, 2022): 33–41. http://dx.doi.org/10.31499/2616-5236.2(20).2022.261847.

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In the face of water scarcity, the world seeks to explore all available options to reduce overexploitation and so limited freshwater resources. One of the most reliable available water resources is wastewater. As the world's population grows, so do industrial, agricultural, and domestic activities, which produce large amounts of such water that can be treated and reused. Sewage treatment processes have been somewhat successful in wastewater treatment, but many are high-tech and cost-effective. Membrane technology has become a favorite choice for the reclamation of water from various wastewater streams for reuse. Organic membranes are made of synthetic organic polymers. Pressure membranes are mainly produced for separation processes (microfiltration, ultrafiltration, nanofiltration and reverse osmosis) from synthetic organic polymers. These include polyethylene (PE), polytetrafluoroethylene (PTFE), polypropylene and cellulose acetate. In addition, membranes are made of materials such as ceramics, metals, zeolites or silica. They are chemically and thermally stable and are widely used for industrial purposes such as hydrogen separation, ultrafiltration and microfiltration. Pressure-controlled membrane technologies are the most widely used membrane processes in wastewater treatment, from previous contamination followed by additional treatment. These processes are based on microfiltration (MF), ultrafiltration (UF), nanofiltration (NF) and reverse osmosis (RO). They are necessary but costly The choice of wastewater treatment option is based on comparative economic efficiency. The main ways to determine such efficiency are: pairwise comparison of options and determine the minimum of the reduced costs of the compared options. Pairwise comparison of options is carried out by determining the coefficients of comparative economic efficiency and payback periods of additional capital investments.
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Fujikawa, Shigenori, Roman Selyanchyn, and Toyoki Kunitake. "A new strategy for membrane-based direct air capture." Polymer Journal 53, no. 1 (October 15, 2020): 111–19. http://dx.doi.org/10.1038/s41428-020-00429-z.

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AbstractDirect CO2 capture from the air, so-called direct air capture (DAC), has become inevitable to reduce the concentration of CO2 in the atmosphere. Current DAC technologies consider only sorbent-based systems. Recently, there have been reports that show ultrahigh CO2 permeances in gas separation membranes and thus membrane separation could be a potential new technology for DAC in addition to sorbent-based CO2 capture. The simulation of chemical processes has been well established and is commonly used for the development and performance assessment of industrial chemical processes. These simulations offer a credible assessment of the feasibility of membrane-based DAC (m-DAC). In this paper, we discuss the potential of m-DAC considering the state-of-the-art performance of organic polymer membranes. The multistage membrane separation process was employed in process simulation to estimate the energy requirements for m-DAC. Based on the analysis, we propose the target membrane separation performance required for m-DAC with competitive energy expenses. Finally, we discuss the direction of future membrane development for DAC.
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47

Ødegaard, H., S. Østerhus, E. Melin, and B. Eikebrokk. "NOM removal technologies – Norwegian experiences." Drinking Water Engineering and Science 3, no. 1 (January 13, 2010): 1–9. http://dx.doi.org/10.5194/dwes-3-1-2010.

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Abstract. The paper gives an overview of the methods for removal of natural organic matter (NOM) in water, particularly humic substances (HS), with focus on the Norwegian experiences. It is demonstrated that humic substances may be removed by a variety of methods, such as; molecular sieving through nanofiltration membranes, coagulation with subsequent floc separation (including granular media or membrane filtration), oxidation followed by biofiltration and sorption processes including chemisorption (ion exchange) and physical adsorption (activated carbon). All these processes are in use in Norway and the paper gives an overview of the operational experiences.
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48

Kumakiri, Izumi, Morihisa Yokota, Ryotaro Tanaka, Yu Shimada, Worapon Kiatkittipong, Jun Wei Lim, Masayuki Murata, and Mamoru Yamada. "Process Intensification in Bio-Ethanol Production–Recent Developments in Membrane Separation." Processes 9, no. 6 (June 10, 2021): 1028. http://dx.doi.org/10.3390/pr9061028.

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Ethanol is considered as a renewable transport fuels and demand is expected to grow. In this work, trends related to bio-ethanol production are described using Thailand as an example. Developments on high-temperature fermentation and membrane technologies are also explained. This study focuses on the application of membranes in ethanol recovery after fermentation. A preliminary simulation was performed to compare different process configurations to concentrate 10 wt% ethanol to 99.5 wt% using membranes. In addition to the significant energy reduction achieved by replacing azeotropic distillation with membrane dehydration, employing ethanol-selective membranes can further reduce energy demand. Silicalite membrane is a type of membrane showing one of the highest ethanol-selective permeation performances reported today. A silicalite membrane was applied to separate a bio-ethanol solution produced via high-temperature fermentation followed by a single distillation. The influence of contaminants in the bio-ethanol on the membrane properties and required further developments are also discussed.
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Vermaak, Leandri, Hein W. J. P. Neomagus, and Dmitri G. Bessarabov. "Recent Advances in Membrane-Based Electrochemical Hydrogen Separation: A Review." Membranes 11, no. 2 (February 13, 2021): 127. http://dx.doi.org/10.3390/membranes11020127.

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In this paper an overview of commercial hydrogen separation technologies is given. These technologies are discussed and compared—with a detailed discussion on membrane-based technologies. An emerging and promising novel hydrogen separation technology, namely, electrochemical hydrogen separation (EHS) is reviewed in detail. EHS has many advantages over conventional separation systems (e.g., it is not energy intensive, it is environmentally-friendly with near-zero pollutants, it is known for its silent operation, and, the greatest advantage, simultaneous compression and purification can be achieved in a one-step operation). Therefore, the focus of this review is to survey open literature and research conducted to date on EHS. Current technological advances in the field of EHS that have been made are highlighted. In the conclusion, literature gaps and aspects of electrochemical hydrogen separation, that require further research, are also highlighted. Currently, the cost factor, lack of adequate understanding of the degradation mechanisms related to this technology, and the fact that certain aspects of this technology are as yet unexplored (e.g., simultaneous hydrogen separation and compression) all hinder its widespread application. In future research, some attention could be given to the aforementioned factors and emerging technologies, such as ceramic proton conductors and solid acids.
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50

Xu, Yibin. "Advanced Post-Combustion Carbon Capture and Separation Technologies." Highlights in Science, Engineering and Technology 17 (November 10, 2022): 58–66. http://dx.doi.org/10.54097/hset.v17i.2446.

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The climate crisis caused by global warming has focused on the role of greenhouse gases (GHG), especially that of CO2, which is the predominant element of GHG. One of the current approaches toward reducing and limiting atmospheric carbon dioxide is through carbon capture and storage. The most commonly used techniques are absorption, adsorption and membrane-based carbon capture. This paper evaluates individual methods of CC currently in use and draws comparisons for the pros and cons. Furthermore, it assesses potential improvements for the future. The absorption method captures industrial carbon emissions due to its maturity and the possibility of retrofitting the technology into existing power plants. The adsorption method can operate through an extensive range of temperatures, which can be utilized in broader scenarios. Membrane technologies have the greatest potential for future development due to their low operational energy; however, further research is required to reduce capital costs and improve performance under certain conditions.
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