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Artigos de revistas sobre o tema "Microwave regeneration"

Autor: Grafiati
Publicado: 9 de novembro de 2024

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1

Wang, Shu Hui, Meng Xu e Ming Guo Yu. "Effect of Rotary Partition DPF Structure on its Regeneration Characteristics with Microwave". Applied Mechanics and Materials 556-562 (maio de 2014): 1013–16. http://dx.doi.org/10.4028/www.scientific.net/amm.556-562.1013.

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The energy that traditional diesel particulate filter (DPF) regeneration with microwave requires in regeneration process often exceeds the capacity of the vehicle's battery, a rotary partition regenerative DPF with microwave is proposed recently, which was a annular column consisting of the fan-shaped filter units. A filtration unit microwave heating regeneration model was established aiming at this DPF, to study the regenerative properties of the filtration unit and to get influence that its shape structure plays on reproduction characteristics. The results show that: the central angle, length to diameter ratio, the ratio of inner and outer diameter of the DPF all have larger impact on the regeneration. The results can provide theoretical basis and reference for practical development of the new DPF.
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2

Feng, Quan Li, Chen Xu Wang, Xue Qian Wang e Ping Ning. "Regeneration of Activated Carbon Fiber Using Microwave under Vacuum Condition". Applied Mechanics and Materials 373-375 (agosto de 2013): 2019–23. http://dx.doi.org/10.4028/www.scientific.net/amm.373-375.2019.

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The purpose of this work was to explore the application of microwaves for the regeneration of activated carbon fibers saturated with ethanol under vacuum condition. The efficacy of the regeneration was analyzed by the rate of desorption and mass loss. When the microwave power was 680W , the dosage of activated carbon fiber was 3.5g , the degree of vacuum is 0.05MPa and the microwave irradiation time was 180s, the desorption rate was up to 95.3% and the outlet concentration of ethanol was 97.5%. The adsorption of activated carbon fiber after microwave regeneration for many times was larger than the fresh activated carbon fiber. And the rate of total mass loss was 3.54%.
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3

Wang, Chen Xu, Xue Qian Wang, Ping Ning e Quan Li Feng. "Regeneration of Activated Carbon Fiber by Microwave under Nitrogen Condition". Applied Mechanics and Materials 373-375 (agosto de 2013): 2024–29. http://dx.doi.org/10.4028/www.scientific.net/amm.373-375.2024.

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The purpose of this work was to explore the application of microwaves for the regeneration of activated carbon fibers saturated with ethanol. The efficacy of the regeneration was analyzed by the rate of desorption and mass loss. When the microwave power was 528W , the dosage of activated carbon fiber was 3.0g , the nitrogen gas flow rate was 1.4m3/h and the microwave irradiation time was 180s, the desorption rate was up to 90.2% and the outlet concentration of ethanol was 95.6%. The adsorption of activated carbon fiber after microwave regeneration for many times was larger than the fresh activated carbon fiber. And the rate of total mass loss was 4.74%.
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4

Grygierzec, Beata, Krzysztof Słowiński, Stanisław Mazur, Sylwester Tabor, Angelika Kliszcz, Agnieszka Synowiec, Dariusz Roman Ropek e Lidia Luty. "Condition of Young Japanese Knotweed (Reynoutria japonica Houtt.) Offshoots in Response to Microwave Radiation of Their Rhizomes". Agronomy 13, n.º 11 (18 de novembro de 2023): 2838. http://dx.doi.org/10.3390/agronomy13112838.

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Invasive Japanese knotweed is one of Poland’s most aggressive and difficult-to-control species. New methods of control are of utmost importance. This study aimed to analyze young knotweed offshoots’ regeneration and physiological condition after treatment of their rhizomes with microwaves of high frequency. The fresh rhizomes were microwaved in the laboratory once for different times (from 5 to 60 s, interval 5 s). Next, in the greenhouse, the growth of offshoots and their biochemical state (spectrophotometry of leaves) were recorded in three measurement series. It was shown that the microwave treatment for 35 s directly destroys knotweed rhizomes of a diameter of 1–3 cm, so it does not produce new offsprings. The treatment times from 5–25 s delay offspring regeneration and growth and development of leaves. The leaves initiate the mechanisms of protection against microwave stress in offshoots grown from the rhizomes exposed to microwaves for 10 s (increase in the anthocyanin index) and the 5 or 20 s treatments (higher values of the photochemical reflectance index). Based on the effective dose (ED50) analysis, the threshold of harmful effects of microwaves on the growth and development of Reynoutria japonica rhizomes was assumed to be 17–19 s.
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5

Yang, Dong, e Xin Du. "A review about microwave regeneration technology of waste activated carbon". IOP Conference Series: Earth and Environmental Science 983, n.º 1 (1 de fevereiro de 2022): 012101. http://dx.doi.org/10.1088/1755-1315/983/1/012101.

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Abstract Activated carbon (AC) can concentrate and transfer pollutants using its own adsorption capacity. Waste AC is a kind of solid waste, its adsorption capacity of pollutants is greatly reduced after adsorption saturation. If handled improperly, it will cause secondary pollution to the environment. Therefore, it is necessary to regenerate the waste AC to restore its adsorption performance and reduce environmental pollution and resource waste. Microwave regeneration technology is of great research value because of its low energy consumption, time saving and high efficiency. Based on the characteristics of microwave heating and regeneration mechanism, this paper summarizes the advantages of microwave regeneration compared with conventional heating regeneration, and the application status of microwave technology in the regeneration of waste AC was reviewed. The influence of different types of pollutants adsorbed by AC, the change of control conditions for microwave regeneration of AC and the characteristics of AC itself on microwave regeneration were briefly described. And the development direction of microwave regeneration of AC in the future is also prospected.
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6

Wang, Yu, Pan Han, Jie Yang, Ya Li Liu e Run Ping Han. "Reuse of Spent Natural Zeolite for Methylene Blue Adsorption by Microwave Irradiation". Advanced Materials Research 233-235 (maio de 2011): 2019–22. http://dx.doi.org/10.4028/www.scientific.net/amr.233-235.2019.

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Microwave heating was efficient and the regeneration time was shortened compared to conventional thermal heating. Experiments were conducted to demonstrate that spent zeolite can be regenerated for reuse by microwave irradiation. The spent zeolite tested was prepared from the aqueous solutions of methylene blue. The effects of microwave irradiation time, microwave power on the regeneration efficiency were presented. The results show that microwave irradiation time and microwave power played significant role on the regeneration efficiency. It was concluded that microwave irradiation may be effective method for dye-loaded zeolite reuse.
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7

Luciano, Giorgio, Maurizio Vignolo, Denise Galante, Cristina D’Arrigo, Franco Furlani, Monica Montesi e Silvia Panseri. "Designing and Manufacturing of Biocompatible Hydroxyapatite and Sodium Trisilicate Scaffolds by Ordinary Domestic Microwave Oven". Compounds 4, n.º 1 (30 de janeiro de 2024): 106–18. http://dx.doi.org/10.3390/compounds4010005.

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In this work, we present a versatile, rapid, and low-cost manufacturing technique to develop bioceramic scaffolds that could enhance bone tissue regeneration via microwave preparation using a domestic microwave oven. The scaffolds were prepared by combining hydroxyapatite and water glass (sodium trisilicate solution), foamed by using a microwave oven, and then characterized by means of Scanning Electron Microscopy (SEM) with Energy Dispersive X-ray Analysis (EDX), mechanical properties, infrared spectroscopy (ATR-FTIR), and a density and stability test in water. Furthermore, in vitro tests were performed to verify the affinity of the scaffold for osteoclast cells. The morphology of the samples showed interconnected pores suitable for promoting tissue regeneration and vascularization, while specific mechanical properties were preserved. The physicochemical characterization and the in vitro tests presented promising results for bone regenerative applications. The scaffolds we obtained exhibited comparable properties to those fabricated using a laboratory microwave oven, including the ability to induce the formation of bone-like tissue in vitro.
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8

Lee, Chang Chuan, Noboru Yoshikawa e Shoji Taniguchi. "Porous Glass Composite as Diesel Particulate Filter and the Microwave Regeneration". Advanced Materials Research 936 (junho de 2014): 2050–53. http://dx.doi.org/10.4028/www.scientific.net/amr.936.2050.

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In this study, porous SiO2·RO/stainless steel composite body was prepared through the polyurethane sponge replica method. Porous samples obtained through sintering consist of well dispersed and distributed stainless steel particles within the glass matrix. Such microstructure is desired for the purpose as a soot particulate filters (DPF) utilizing microwave rapid and selective heating characteristic, especially during the cold start phase of an engine. Results of microwave heating ability and diesel soot regeneration tests shows that, the fabricated porous composite material is proven to be reliable for rapidly microwave assisted regeneration. Both the regeneration temperature and O2composition in the supplied gas played an important role in the regeneration process.
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9

Karimifard, Shahab, e Mohammad Reza Alavi Moghaddam. "The effects of microwave regeneration on adsorptive performance of functionalized carbon nanotubes". Water Science and Technology 73, n.º 11 (5 de março de 2016): 2638–43. http://dx.doi.org/10.2166/wst.2016.117.

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In this study, the microwave regeneration method was applied to investigate the properties and adsorptive performance of functionalized carbon nanotubes (f-CNTs) in different cycles of regeneration/reuse. For this purpose, an organic and hazardous dye (Reactive Blue 19) was chosen as a widely used pollutant. N2 adsorption/desorption isotherms, scanning electron microscopy and Fourier transform infrared spectroscopy were used to characterize f-CNTs during the regeneration/reuse procedure. The morphology, specific surface area and pore volume of f-CNT samples were not significantly altered. However, the functional groups present on the f-CNTs’ surface were gradually removed after successive cycles of regeneration/reuse. A sudden decrease of adsorption capacity (about 20%) after the first cycle of regeneration/reuse was attributed to the elimination of functional groups interacting with the dye molecules because of the molecular-level heating. Relatively high regeneration efficiencies (73.30 to 80.16%) proved that the microwave regeneration method was successful. Very high step stripping efficiencies (80.16 to 98.02%) in four cycles of regeneration/reuse demonstrated that the microwave regeneration method could be utilized in consecutive cycles. After four cycles of regeneration/reuse, the CNTs could not be considered as functionalized.
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10

Bogdanov, Todor, Plamena Marinova, Lubomir Traikov, Pavlina Gateva, Theophil Sedloev, Andrey Petrov, Vlayko Vodenicharov et al. "The Effect of Low-Temperature Microwave Plasma on Wound Regeneration in Diabetic Rats". Processes 11, n.º 12 (10 de dezembro de 2023): 3399. http://dx.doi.org/10.3390/pr11123399.

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Impaired wound healing in diabetic individuals presents a significant clinical challenge, and this study explores the impact of low-temperature microwave plasma in an argon atmosphere, a type of cold atmospheric plasma (CAP), on wound regeneration in diabetic rats. The findings reveal that this CAP treatment accelerates wound regeneration in diabetic rats, promoting faster wound closure, reducing inflammation, and enhancing critical regenerative processes such as angiogenesis, collagen synthesis, and extracellular matrix remodeling. Additionally, CAP exhibits anti-inflammatory effects by modulating the immune response towards a pro-regenerative state. These results underscore the potential of CAP in diabetic wound care, offering a promising approach to address delayed wound healing in diabetic patients and potentially improving the quality of life for those with chronic diabetic wounds.
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11

Wang, Guo Ping. "Discussion on Activated Carbon Regeneration Method". Applied Mechanics and Materials 641-642 (setembro de 2014): 1127–30. http://dx.doi.org/10.4028/www.scientific.net/amm.641-642.1127.

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As an effective adsorbent, activated carbon is widely used in the treatment of wastewater. Describes some of the regeneration of activated carbon for reference: thermal regeneration method, chemical regeneration, biological regeneration method, electrochemical regeneration, regeneration ozone oxidation, wet oxidation regeneration shown, supercritical carbon dioxide extraction regeneration, regeneration of catalytic oxidation method, microwave and ultrasonic regeneration and so on.
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12

Wang, Min, Xiang Lian Wang e Gui Qing Gao. "Research on the Regeneration of Modified Activated Carbon Containing 2,4,6-TCP by Microwave Irradiation". Advanced Materials Research 1033-1034 (outubro de 2014): 1358–61. http://dx.doi.org/10.4028/www.scientific.net/amr.1033-1034.1358.

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Microwave regeneration research has been conducted for the modified activated carbon (MAC) which has adsorbed 2,4,6-TCP. The effects of microwave power, microwave irradiation time and MAC loading amount for regeneration are studied.The results show that, at the beginning, the adsorption volume increases with the increase of the microwave power. However, when the power is over 450w, the adsorption volume begins to fall. The adsorption volume increases with the irradiation time,rises to its peak when irradiated for 6 minutes.The adsorption volume increases with the loading amount and rises to its peak when the amount is 5g.
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13

Palma, Vincenzo, Paolo Ciambelli, Eugenio Meloni e Agusti Sin. "Catalytic DPF microwave assisted active regeneration". Fuel 140 (janeiro de 2015): 50–61. http://dx.doi.org/10.1016/j.fuel.2014.09.051.

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14

Foo, K. Y., e B. H. Hameed. "Microwave-assisted regeneration of activated carbon". Bioresource Technology 119 (setembro de 2012): 234–40. http://dx.doi.org/10.1016/j.biortech.2012.05.061.

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15

Baikov, Andrei, e Olga Baikova. "New High-Efficiency Resonant O-Type Devices as the Promising Sources of Microwave Power". Energies 13, n.º 10 (15 de maio de 2020): 2514. http://dx.doi.org/10.3390/en13102514.

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New O-type high-power vacuum resonant microwave devices are considered in this study: COM klystrons, CSM klystrons and resotrodes. All these devices can output a large amount of power (up to units of MW and higher) with an efficiency of up to 90%. Such devices are promising microwave sources for industrial microwave technologies as well as for microwave energy. The principle of GSP-equivalence for klystrons is described herein, allowing a complete physical analog of this device with other parameters to be created. The existing mathematical and computer models of klystrons are analyzed. The processes of stage-by-stage optimization and the embedding procedure, which leads to COM and to CSM klystrons, are considered. Resotrodes, IOT-type devices with energy regeneration in the input circuit, are also considered. It is shown that these devices can combine high power with an efficiency of up to 90% and a gain of more than 30 dB. Resotrodes with 0-regeneration can be effective sources of radio frequency (RF) power in the range of 20 to 200 MHz. Resotrodes with 2π-regeneration are an effective source of RF/microwave energy in the range of 200 MHz to 1000 MHz.
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16

Cherbański, Robert, Magdalena Komorowska-Durka, Georgios D. Stefanidis e Andrzej I. Stankiewicz. "Microwave Swing Regeneration vs Temperature Swing Regeneration—Comparison of Desorption Kinetics". Industrial & Engineering Chemistry Research 50, n.º 14 (20 de julho de 2011): 8632–44. http://dx.doi.org/10.1021/ie102490v.

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17

Liu, Xin Zhong, Yong Jie Huang, Ze Ran Cheng e Wei Liao. "Research on Environment Materials with Progress on Regeneration of Active Carbon". Applied Mechanics and Materials 540 (abril de 2014): 235–38. http://dx.doi.org/10.4028/www.scientific.net/amm.540.235.

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Now activated carbon has been used greatly in all walks of life, thus the regeneration of spent activated carbon is of great significance. The advantages and disadvantages of the regeneration methods of the spent activated carbon are introduced and discussed in this paper, mainly including thermal regeneration, chemical regeneration, electrochemical regeneration, microwave radiation regeneration, wet air oxidation and supercritical fluid regeneration etc. Then a new recycling method of the spent activated carbon is proposed.
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18

FANG, C. S., e PETER M. C. LAI. "MICROWAVE REGENERATION OF SPENT POWDER ACTIVATED CARBON". Chemical Engineering Communications 147, n.º 1 (maio de 1996): 17–27. http://dx.doi.org/10.1080/00986449608936492.

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19

Kong, Yougen, e Chang Yul Cha. "Microwave-Induced Regeneration of NOx-Saturated Char". Energy & Fuels 10, n.º 6 (janeiro de 1996): 1245–49. http://dx.doi.org/10.1021/ef960060j.

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20

Zhang, Xue, Chunyue Cui, Ying Wang, Jing Chang, Dong Ma e Jing Wang. "An efficient method for removal of pentachlorophenol using adsorption and microwave regeneration with different magnetic carbon nanotubes". Water Science and Technology 81, n.º 3 (1 de fevereiro de 2020): 585–95. http://dx.doi.org/10.2166/wst.2020.146.

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Abstract Various magnetic carbon nanotubes (CNTs) Co0.5M0.5Fe2O4-CNTs (M = Cu, Mn, Ni, Zn) were successfully prepared and applied for treatment of pentachlorophenol (PCP) with adsorption and microwave irradiation process. The Co0.5M0.5Fe2O4-CNTs were characterized by transmission electron microscopy, X-ray diffraction, vibrating sample magnetometry, and microwave absorption spectroscopy. The adsorption experiment results showed the adsorption capacity for PCP was in the following order: Co0.5Cu0.5Fe2O4-CNTs > Co0.5Mn0.5Fe2O4-CNTs > Co0.5Ni0.5Fe2O4-CNTs > Co0.5Zn0.5Fe2O4-CNTs. After adsorption, the Co0.5M0.5Fe2O4-CNTs was separated by magnetic field and regenerated by microwave irradiation at 850 W for 180 s. It was confirmed that after six adsorption and microwave regeneration cycles, the regeneration efficiency maintained over 90%. In particular, Co0.5Cu0.5Fe2O4-CNTs exhibited excellent adsorption capacity and reusability. These results can open a new avenue for treatment of chlorinated organic compounds with efficiently and non-secondary pollution.
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21

Chakraborty, Vaishali, e Manobjyoti Bordoloi. "Deoximation by Pyridinium Chlorochromate under Microwave Irradiation". Journal of Chemical Research 23, n.º 2 (fevereiro de 1999): 120–21. http://dx.doi.org/10.1177/174751989902300227.

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22

Fu, Yi, Luo Chun Wang e Zhen Zhou. "Microwave Regeneration of Field-Spent Granular Activated Carbon from Power Plants". Advanced Materials Research 356-360 (outubro de 2011): 2065–70. http://dx.doi.org/10.4028/www.scientific.net/amr.356-360.2065.

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Granular activated carbon (GAC) is extensively used to remove natural organic matter and residential chlorine in water treatment process of power plant. After being used, the spent GAC needs to be regenerated in order to save on operation costs and reduce solid waste disposal. In this study, microwave technique was tried to regenerate the field-spent GAC from a power plant. The effect of microwave power, irradiation time and hydrochloric acid pretreatment were investigated, it was found that microwave could recover the adsorption capacity of GAC within a short time and the tannic acid adsorption efficiency of regenerated GAC was 9 times greater than spent GAC; hydrochloric acid pretreatment could improve the regeneration process, it showed the highest removal efficiency and iodine number, 99.6% and 859 mg/g respectively. The results obtained from SEM-EDX showed that hydrochloric acid pretreatment could remove inorganic matter and other impurities of GAC. All these indicate that microwave technique can effectively regenerate field-spent GAC, and hydrochloric acid pretreatment is an important process before regeneration.
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23

Kong, J., M. Henrichsen e A. J. Shih. "Infrared thermometry measurement of temperature distribution in the microwave regeneration of diesel particulate filters". International Journal of Engine Research 6, n.º 1 (1 de fevereiro de 2005): 61–71. http://dx.doi.org/10.1243/146808705x7275.

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Infrared thermometry was applied to study the temperature distribution in microwave heating of diesel particulate filters. In situ non-contact temperature measurement tests were conducted using an integrated four-channel fibre-optic infrared temperature measurement and a microwave heating system. Silica light pipes, which are transparent to electromagnetic fields, were used to collect the infrared radiation from specified locations inside a filter during heating. The temporal and spatial temperature distributions in four microwave-heated diesel particulate filters with different soot and catalyst loading conditions were measured. Experimental results show the non-uniform heating inside filters. Catalyst coating, soot loading, and microwave power level all affect the heating rate and temperature distribution. Using 1 kW of microwave power, heating for 600 s can raise the temperature above 200°C in the soot-laden, catalysed filter.
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24

Al Bakain, R. Z., Y. S. Al-Degs, A. A. Issa, S. Abdul Jawad, K. A. Abu Safieh e M. A. Al-Ghouti. "Activation of kaolin with minimum solvent consumption by microwave heating". Clay Minerals 49, n.º 5 (dezembro de 2014): 667–81. http://dx.doi.org/10.1180/claymin.2014.049.5.04.

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AbstractA kaolin clay was activated with 1.0 M H2SO4 solution at minimum liquid to solid ratio (L/S) using microwave heating. The optimum experimental conditions for activation were L/S ratio 3.0 mL 1 M H2SO4 per gram kaolin, microwave input power 500–600 W, and heating time 5–10 min. Activation at L/S < 3.0 mL/g using 1.0 M H2SO4 was not efficient, indicating the influence of solvent for absorbing microwaves more intensively and thus improving activation. Significant physicochemical changes were observed by the proposed procedure with smaller volumes of activator compared to the conventional heating method. Microwave input power and heating time have a strong influence on the quality of the final material; activation at high input power (>700 W) and longer heating times (>10 min.) are not recommended since they cause dissolution of kaolinite structure. Microwave-heated kaolin manifested better adsorption for tartrazine dye due to improvements in textural and chemical properties of kaolinite. Moreover, irradiation of used kaolinite has significantly improved dye desorption, increasing the importance of microwaves in regeneration/recycling studies. Detailed dielectric measurements of kaolin-acid mixtures recorded at frequencies much lower than 2.45 GHz revealed that absorption of radiation is highly dependent on the activator solution in the mixture. For 3.0 mL/g mixtures, high dielectric constant ε’ 5223, dielectric loss factor ε” 5083, tangent loss tan d 1.30, penetration depth dp 0.57 cm at (103 Hz), and AC-conductivity σ 0.032 Om–1 were determined at 105 Hz. Filling the pores of kaolin by acid solution increased the microwave absorption and hence de-alumination of kaolinite.
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25

Pan, R. R., F. L. Fan, Y. Li e X. J. Jin. "Microwave regeneration of phenol-loaded activated carbons obtained from Arundo donax and waste fiberboard". RSC Advances 6, n.º 39 (2016): 32960–66. http://dx.doi.org/10.1039/c6ra01642a.

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26

Srinivas, K. V. N. S., e Biswanath Das. "Microwave assisted Convenient and Facile Regeneration of Carbonyl Compounds from Oximes, Semicarbazones and Phenylhydrazones using Silica Supported Ceric Ammonium Nitrate1". Journal of Chemical Research 2002, n.º 11 (novembro de 2002): 556–57. http://dx.doi.org/10.3184/030823402103170745.

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27

Mitra, Alok Kumar, Aparna De e Nilay Karchaudhuri. "Regeneration of Aldehydes from Bisulfite Addition Products in the Solid State using Montmorillonite KSF Clay under Microwave Irradiation". Journal of Chemical Research 23, n.º 9 (setembro de 1999): 560–61. http://dx.doi.org/10.1177/174751989902300921.

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Microwave irradiation of bisulfite addition products with montmorillonite KSF clay under solvent-free conditions provides a fast, efficient and simple method for regeneration of aldehydes in excellent yields.
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Babu, V. Suresh, S. Popuri, M. Gautam e M. S. Seehra. "Thermal and Microwave Characteristics of Diesel Particulate in Relation to Microwave Regeneration of Traps". Applied Occupational and Environmental Hygiene 11, n.º 7 (julho de 1996): 799–803. http://dx.doi.org/10.1080/1047322x.1996.10389972.

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Mitra, Alok Kumar, Aparna De e Nilay Karchaudhuri. "Regeneration of Ketones from Semicarbazones in the Solid State on Wet Silica Supported Sodium Bismuthate under Microwave Irradiation". Journal of Chemical Research 23, n.º 5 (maio de 1999): 320–21. http://dx.doi.org/10.1177/174751989902300512.

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Microwave irradiation of ketosemicarbazones on wet silica supported sodium bismuthate under environmentally benign solvent-free condition provides a fast, efficient and simple method for regeneration of ketones in good yields.
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30

Gagliano, Erica, Pietro P. Falciglia, Yeakub Zaker, Tanju Karanfil e Paolo Roccaro. "Microwave regeneration of granular activated carbon saturated with PFAS". Water Research 198 (junho de 2021): 117121. http://dx.doi.org/10.1016/j.watres.2021.117121.

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Heravi, Majid M., Mahmood Tajbakhsh, Setareh Habibzadeh e Mitra Ghassemzadeh. "Regeneration of Carbonyl Compounds from Phenylhydrazones Under Microwave Irradiation". Phosphorus, Sulfur, and Silicon and the Related Elements 177, n.º 10 (outubro de 2002): 2299–302. http://dx.doi.org/10.1080/10426500214118.

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32

Baruah, Mukulesh, Dipak Prajapati e Jagir S. Sandhu. "Regeneration of Carbonyl Compounds from Semicarbazones Under Microwave Irradiations". Synthetic Communications 28, n.º 22 (novembro de 1998): 4157–63. http://dx.doi.org/10.1080/00397919809458695.

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Ania, C. O., J. B. Parra, J. A. Menéndez e J. J. Pis. "Microwave-assisted regeneration of activated carbons loaded with pharmaceuticals". Water Research 41, n.º 15 (agosto de 2007): 3299–306. http://dx.doi.org/10.1016/j.watres.2007.05.006.

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34

Pallavkar, Sameer, Tae-Hoon Kim, Dan Rutman, Jerry Lin e Thomas Ho. "Active Regeneration of Diesel Particulate Filter Employing Microwave Heating". Industrial & Engineering Chemistry Research 48, n.º 1 (7 de janeiro de 2009): 69–79. http://dx.doi.org/10.1021/ie800780g.

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35

Palma, Vincenzo, e Eugenio Meloni. "Microwave assisted regeneration of a catalytic diesel soot trap". Fuel 181 (outubro de 2016): 421–29. http://dx.doi.org/10.1016/j.fuel.2016.05.016.

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36

Boruah, Anima, Bipul Baruah, Dipak Prajapati e Jagir S. Sandhu. "Regeneration of carbonyl compounds from oximes under microwave irradiations". Tetrahedron Letters 38, n.º 24 (junho de 1997): 4267–68. http://dx.doi.org/10.1016/s0040-4039(97)00875-7.

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37

Chowdhury, Tamanna, Meng Shi, Zaher Hashisho e Steven M. Kuznicki. "Indirect and direct microwave regeneration of Na-ETS-10". Chemical Engineering Science 95 (maio de 2013): 27–32. http://dx.doi.org/10.1016/j.ces.2013.02.061.

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38

Meier, Matthias, Michael Turner, Steven Vallee, William C. Conner, Kyu Ho Lee e Karl S. Yngvesson. "Microwave regeneration of zeolites in a 1 meter column". AIChE Journal 55, n.º 7 (julho de 2009): 1906–13. http://dx.doi.org/10.1002/aic.11793.

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39

Ania, C. O., J. A. Menéndez, J. B. Parra e J. J. Pis. "Microwave-induced regeneration of activated carbons polluted with phenol. A comparison with conventional thermal regeneration". Carbon 42, n.º 7 (2004): 1383–87. http://dx.doi.org/10.1016/j.carbon.2004.01.010.

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40

Feng, Quan Li, Ming Lei Lian, Xue Qian Wang e Ping Ning. "Study on Desorption of Ethanol-Loaded Activated Carbon by Microwave Irradiation under N2 Condition". Advanced Materials Research 396-398 (novembro de 2011): 1819–24. http://dx.doi.org/10.4028/www.scientific.net/amr.396-398.1819.

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Granular activated carbon is used in adsorption of low concentration ethanol in water, and the saturated carbon is desorbed by microwave irradiation under N2 condition for recovery of the ethanol and regeneration of the activated carbon. Through the study on microwave desorption of ethanol-loaded activated carbon under N2 condition, the following conclusions can be drawn. The highest value of the ethanol concentration appears quicker and higher when the microwave power is stronger. For example, the highest value appears before 80s when the microwave power is 320W; the ethanol-loaded activated carbon can be desorbed nearly completely after 120s when the microwave power is not weaker than 320W; the microwave power has an important effect on the outlet concentration curve of ethanol, and it is an important factor that affects the results of microwave desorption; After three processes of activated carbon adsorption and microwave desorption under N2 condition, the concentration of ethanol can come up to over than 94%～95% from 4%～8%. This paper sets forth the process and principle for microwave desorption of ethanol-loaded activated carbon under N2 condition.
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41

Yang, J., H. Y. Tan, Q. X. Low, B. P. Binks e J. M. Chin. "CO2capture by dry alkanolamines and an efficient microwave regeneration process". Journal of Materials Chemistry A 3, n.º 12 (2015): 6440–46. http://dx.doi.org/10.1039/c4ta06273f.

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42

Kaya, A. Uğur, Selahaddin Güner, Marklen Ryskin, Azaria Stephano Lameck, Ana R. Benitez, Uri Shuali e Shlomo Nir. "Effect of Microwave Radiation on Regeneration of a Granulated Micelle–Clay Complex after Adsorption of Bacteria". Applied Sciences 10, n.º 7 (7 de abril de 2020): 2530. http://dx.doi.org/10.3390/app10072530.

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Granulated micelle–clay complexes including the organic cation octadecyltrimethylammonium (ODTMA) were shown to be efficient in removal of total bacteria count (TBC) from water. Microwave (MW) heating of granules to restore bacterial removal was investigated. Drying of granules by MW required 20-fold less energy than by conventional heating. When water content of granules approached 10%, or less, their heating period by MW had to be below 1 min, e.g., 30 s, and less, in order to avoid ignition and irreversible structural changes. Structural and thermal properties of MW heated samples were studied by FT-IR spectra and thermo gravimetric analyses (TGA). Inactivation of bacteria in water was more efficient by MW than by conventional oven, or by electric plate. For elimination of bacteria from water, MW heating was at least five-fold more efficient than by conventional heating. The results have established an adequate regeneration procedure by MW heating at durations depending on the remaining percentage of water associated with the granules. Tests of first and second regenerations by MW heating, and HCl washing of columns, were carried out. It was concluded that MW treatment may be chosen for optimal regeneration of the granulated micelle–clay complex as an efficient and low-cost procedure.
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43

Cao, Xiao Qiang, Sheng Rong Liu e Xue Min Huang. "Capture of Toluene Vapors Using Adsorption and Microwave Irradiation Regeneration". Applied Mechanics and Materials 99-100 (setembro de 2011): 1092–95. http://dx.doi.org/10.4028/www.scientific.net/amm.99-100.1092.

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Experimental investigations using granular activated carbon (GAC) adsorption and then desorpted with microwave irradiation for toluene abatement are reported in this paper. The results indicated that the adsorption capacity of GAC for toluene was 198 mg (toluene) / g (GAC) at 303 K. Isotherm analysis of adsorption data obtained at 303 K showed that the adsorption pattern of toluene on GAC followed the Langmuir isotherm. The Langmuir constants Q0 and b were found to be 208.33 mg/g and 0.0023 m3/mg, respectively. At 313 K, the saturated GAC could achieve more than 90% regeneration efficiency in 40 minutes. In this investigation, the reasonable regeneration temperature and superficial gas velocity were 313 K and 0.073 m/s, respectively.
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44

Mahmood, Saima, Nauman Rahim Khan, Ghulam Razaque, Shefaat Ullah Shah, Memuna Ghafoor Shahid, Hassan A. Albarqi, Abdulsalam A. Alqahtani, Ali Alasiri e Hafiz Muhammad Basit. "Microwave-Treated Physically Cross-Linked Sodium Alginate and Sodium Carboxymethyl Cellulose Blend Polymer Film for Open Incision Wound Healing in Diabetic Animals—A Novel Perspective for Skin Tissue Regeneration Application". Pharmaceutics 15, n.º 2 (27 de janeiro de 2023): 418. http://dx.doi.org/10.3390/pharmaceutics15020418.

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This study aimed at developing the microwave-treated, physically cross-linked polymer blend film, optimizing the microwave treatment time, and testing for physicochemical attributes and wound healing potential in diabetic animals. Microwave-treated and untreated films were prepared by the solution casting method and characterized for various attributes required by a wound healing platform. The optimized formulation was tested for skin regeneration potential in the diabetes-induced open-incision animal model. The results indicated that the optimized polymer film formulation (MB-3) has significantly enhanced physicochemical properties such as high moisture adsorption (154.6 ± 4.23%), decreased the water vapor transmission rate (WVTR) value of (53.0 ± 2.8 g/m2/h) and water vapor permeability (WVP) value (1.74 ± 0.08 g mm/h/m2), delayed erosion (18.69 ± 4.74%), high water uptake, smooth and homogenous surface morphology, higher tensile strength (56.84 ± 1.19 MPa), and increased glass transition temperature and enthalpy (through polymer hydrophilic functional groups depicting efficient cross-linking). The in vivo data on day 16 of post-wounding indicated that the wound healing occurred faster with significantly increased percent re-epithelialization and enhanced collagen deposition with optimized MB-3 film application compared with the untreated group. The study concluded that the microwave-treated polymer blend films have sufficiently enhanced physical properties, making them an effective candidate for ameliorating the diabetic wound healing process and hastening skin tissue regeneration.
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45

Hajj, Ali, Etienne Savary, Thomas Hauviller, Sebastien Curet e Pascaline Pré. "Dielectric dispersion of 30% aqueous Ethanolamine solution at microwave frequencies". European Journal of Microwave Energy 1 (5 de junho de 2024): 19–26. http://dx.doi.org/10.18573/ejme.9.

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Chemical absorption of CO2 in aqueous amines is the most advanced and widely spread technology to mitigate CO2 emissions from flue gas streams, however it is plagued by many problems resulting from high temperatures used to regenerate the solvent. Recently, lab-scale studies of MW-assisted regeneration of aminated solvents have shown a promise in decreasing the severity of the regeneration conditions. Still, successful modeling of the regeneration process or the design of a MW-applicator requires knowledge of the dielectric properties of the solvent. In this work the dielectric properties of 30% by weight aqueous ethanolamine (ETA) solution were measured over [915-2450MHz] at two temperatures (20, 60°C). Then the experimental data were accurately fitted with the Cole-Cole dielectric dispersion model. Obtained dispersion parameters show a decrement of the static dielectric constant and the relaxation frequency relative to those of pure water. In addition, the relaxation time distribution parameter approaches zero, implying a very narrow distribution of relaxation times. Predictions show that the solution possesses a considerable conductivity brought about by the protonation of ETA by water. Still, the contribution of the ionic species to the dielectric loss is minimal relative to that of the dipolar rotation mechanism by ETA and water dipoles on the current spectrum of measurement.
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46

Meloni, Eugenio, Marco Martino, Mariaconcetta Pierro, Pluton Pullumbi, Federico Brandani e Vincenzo Palma. "MW-Assisted Regeneration of 13X Zeolites after N2O Adsorption from Concentrated Streams: A Process Intensification". Energies 15, n.º 11 (3 de junho de 2022): 4119. http://dx.doi.org/10.3390/en15114119.

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N2O has a global warming potential about 300 times higher than CO2, and even if its contribution to the greenhouse effect is underrated, its abatement in industrial production’s tail gas has become imperative. In this work, we investigate the feasibility of the microwave (MW)-assisted regeneration of a 13X zeolite bed for N2O capture from tail gases. Several consecutive adsorption–desorption cycles were performed to verify the microwave heating effect on the zeolite’s adsorption properties. The results of the experimental tests, performed at N2O concentrations of 10, 20 and 40% vol, highlighted that (i) the steps are perfectly repeatable in terms of both adsorbed and desorbed amount of N2O, meaning that the MWs did not damage the zeolite’s structure, (ii) the presence of both H2O and O2 in the feed stream irreversibly reduces the adsorbent capacity due to nitrites and nitrates formation, and (iii) the presence of H2O alone with N2O still reduces the adsorbent capacity of the zeolites, which can be recovered through MW-assisted regeneration at 350 °C. Moreover, the MW-assisted TSA assured an energy and purge gas saving up to 63% and 82.5%, respectively, compared to a traditional regeneration process, resulting in effective process intensification.
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47

Knyazeva, I. R., M. A. Medvedev, L. P. Zharkova, A. A. Gostyukhina, O. P. Kutenkov, V. V. Rostov e M. A. Bolshakov. "The influence of nanosecond microwave pulses on the regeneration processes". Bulletin of Siberian Medicine 10, n.º 6 (28 de dezembro de 2011): 109–13. http://dx.doi.org/10.20538/1682-0363-2011-6-109-113.

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The effects of pulse periodic microwaves (10 GHz, duration of pulse 100 ns, pulse repetition frequency 4—19 pps, peak power density 40—1 520 W/cm2 ) on the reparative regeneration of full-thickness skin wounds on mice was investigated. This effect depends on the pulse repetition frequency and peak power density.
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48

Dobrotvorskiy, Sergey, Ludmila Dobrovolska, Yevheniia Basova e Borys Aleksenko. "PARTICULARS OF ADSORBENT REGENERATION WITH THE USE OF MICROWAVE ENERGY". Acta Polytechnica 59, n.º 1 (28 de fevereiro de 2019): 12–23. http://dx.doi.org/10.14311/ap.2019.59.0012.

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Energy conservation issues are acute in the world. Compressed air is widely used in the modern industrial production. The production of compressed air is a very energy-intensive process, since most of the energy, which is expended by the compressor, passes into the energy of heating. Compressed air cannot be used in modern production without a prior drying and cleaning. Industrial dryer’s air losses is up to 20% of compressed air additionally. Therefore, the issue of saving air during its drying stage is important. In the presented article, the thermal and aerodynamic processes that occur in the classical adsorption tower with the most modern design are considered. The processes that occur in the adsorption column with the microwave regeneration of the adsorbent are also considered. A comparative analysis of these constructions from the point of view of energy saving is made.
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49

Price, D. W., e P. S. Schmidt. "Microwave Regeneration of Adsorbents at Low Pressure: Experimental Kinetics Studies". Journal of Microwave Power and Electromagnetic Energy 32, n.º 3 (janeiro de 1997): 145–54. http://dx.doi.org/10.1080/08327823.1997.11688334.

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50

Price, David W., e Philip S. Schmidt. "VOC Recovery through Microwave Regeneration of Adsorbents: Process Design Studies". Journal of the Air & Waste Management Association 48, n.º 12 (dezembro de 1998): 1135–45. http://dx.doi.org/10.1080/10473289.1998.10463758.

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