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Автор: Grafiati

Опубліковано: 6 вересня 2023

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1

Zhang, Ru Ping, Qiu Lan Yuan, Ke Hua Chen, and Li Fang He. "Constant-Wavelength Synchronous Fluorescence Spectrometry for the Determination of Polycyclic Aromatic Hydrocarbons in Water Samples." Advanced Materials Research 490-495 (March 2012): 3202–6. http://dx.doi.org/10.4028/www.scientific.net/amr.490-495.3202.

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To establish a fast analytical method for simultaneous identification of polycyclic aromatic hydrocarbons (PAHs) in Water, a novel method of constant-wavelength synchronous fluorescence was proposed to the simultaneous determination of different PAHs in a mixture of 6 components. Combing the technique with a system that allowed a crude sample separation based on optimum conditions, detection conditions provided increased selectivity and sample information, and 6 PAHs could be identified and quantified by the corresponding synchronous spectra. The linear response of this method was in the range of 0~1000ng/mL (r≥0.9965), the relative standard deviations (RSD) were in the range of 0.24%~1.48% (n = 6). The detection limits were in the range of 0.028-3.45ng/mL. By using this method, real samples were determined directly and good results were obtained with the recoveries of 66.3%-103.9%, 73.9%-100.3% for spiked river samples

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2

Li, Zhansheng, Ben Zhang, Lianxu Qu, Jizhong Ren, and Yang Li. "A novel atmospheric dielectric barrier discharge (DBD) plasma graft-filling technique to fabricate the composite membranes for pervaporation of aromatic/aliphatic hydrocarbons." Journal of Membrane Science 371, no. 1-2 (April 2011): 163–70. http://dx.doi.org/10.1016/j.memsci.2011.01.035.

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3

Kopac, Turkan. "Research Progress on Process-Intensified Water Treatment Applications." Separations 9, no. 11 (November 7, 2022): 353. http://dx.doi.org/10.3390/separations9110353.

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Process intensification (PI) is aimed towards essentially smaller, cleaner, safer, energy-efficient sustainable technologies involving the application of a number of strategies, including reducing the number of devices, miniaturization, process integration, improving mass and heat transfer, novel energy and separation techniques and combined optimization and control methodologies. Over the recent years, PI has attracted attention in the domain of aqueous medium adsorptive separations and wastewater treatment as well. Thus far, a limited number of investigations have appeared in the literature; in addition, there is yet a lack of published methods to follow the intensified solutions for processes in wastewater treatment. In this connection, this article aims to present an overview of the recent applications and advances in process-intensified decolorization of dyes; removal of aromatic hydrocarbons from wastewaters; and recovery of proteins, heavy metals and rare earth elements from aqueous media. Selected applications have been identified in terms of the PI techniques, and the corresponding process improvements have been discussed for a variety of examples with the aim of contributing to the future progress of applications. It has been confirmed that considerable process improvements could be possible, such as intensified process efficiency, improved adsorption and separation performance, and minimized sorbent requirement and processing time. Even though there have been considerable developments in the field, there is still a need for further developments for the enhancement of the technologies in adsorption wastewater treatment using a systems approach.

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4

Torasso, Nicolás, Paula González-Seligra, Federico Trupp, Diana Grondona, and Silvia Goyanes. "Turning a Novel Janus Electrospun Mat into an Amphiphilic Membrane with High Aromatic Hydrocarbon Adsorption Capacity." Colloids and Interfaces 6, no. 4 (November 4, 2022): 66. http://dx.doi.org/10.3390/colloids6040066.

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Aromatic hydrocarbons in water is one of the collateral effects of the petrochemical industry and represents a serious problem both for their toxicity and environmental contamination. In this work, an innovative amphiphilic membrane was developed capable of rapidly removing hydrocarbons (such as BTEX) present in water under the solubility limit. Firstly, a Janus nanostructured membrane was developed from the deposition of superhydrophobic carbonaceous nanoparticles (CNPs) synthesized by radiofrequency plasma polymerization on a hydrophilic electrospun poly(vinyl alcohol) mat. Secondly, this membrane was turned amphiphilic by UV exposure, allowing water to pass through. The surface properties of the membranes were studied through SEM, contact angle, and FTIR analysis. Dead-end experiments showed that the toluene and xylene selective sorption capacity reached the outstanding adsorption capacity of 647 mg/g and 666 mg/g, respectively, and that the membrane could be reused three times without efficiency loss. Furthermore, swelling of the PVA fibers prevented the liberation of NPs. The selective sorption capacity of the UV-exposed CNPs was explained by studying the interfacial energy relations between the materials at play. This work provides a simple, low-cost, and scalable technique to develop membranes with great potential for water remediation, including the removal of volatile organic compounds from produced water, as well as separating oil-in-water emulsions.

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5

Mahdavi Doost, Fatemeh, Mohammad Mehdi Emamjome, Hamze Ali Jamali, and Hamid Karyab. "Polycyclic Aromatic Hydrocarbons from Bottled Water: A New Automated Solid Phase Extraction Method and Simulation of Cancer Risk." Avicenna Journal of Environmental Health Engineering 9, no. 1 (June 29, 2022): 62–68. http://dx.doi.org/10.34172/ajehe.2022.08.

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Considering the adverse effects of polycyclic aromatic hydrocarbons (PAHs) on human health and the complexity of their detection in water resources, this study was developed to assess the performance of a new automated device for the identification of PAHs in water based on the solid-phase extraction and to simulate the cancer risk of 16 priority PAHs by Monte Carlo technique. All operational modes of extraction were automatically performed using the proprietary software program. Three spiked aliquots of PAHs including 100, 500, and 1000 ng/L were used to evaluate the performance of the automated-solid phase extraction (SPE) apparatus. The time of extraction in the automatic-SPE apparatus was 50±4 minutes for simultaneous extraction of 4 water samples, which was four times faster than that of manual-SPE apparatus. The mean recoveries of PAHs were 89.22±4.94, 91.70±4.45, and 94.61±6.28% in spiked samples, with a mean of 91.84±5.22%. Except for naphthalene, all obtained recoveries were in an acceptable range (85-115%). The results of Monte Carlo simulation showed that the cancer risk attributable to eight detected PAHs including naphthalene, fluorene, phenanthrene (Phe), benzoanthracene, chrysene, benzo(k) fluoranthene, indeno(cd)pyrene, and dibenzo(a,h)anthracene ranged from 0.05E-6 to 0.11E-6, with the cancer risk of 0.012E-6 having the highest probability (P=0.82). Additionally, this simulation showed that 99% of the probability density of cancer risk was located within the range lower than 0.05E-6. Our results showed that the novel automated-SPE apparatus could be utilized for the extraction of PAHs from water resources with a good recovery (85%-115%), high operational speed, and potential for separation of solvents from the air in the drying step. Therefore, this device can be used for the extraction of trace PAHs and similar organic compounds from water resources.

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6

Dieringer, Paul, Falko Marx, Falah Alobaid, Jochen Ströhle, and Bernd Epple. "Process Control Strategies in Chemical Looping Gasification—A Novel Process for the Production of Biofuels Allowing for Net Negative CO2 Emissions." Applied Sciences 10, no. 12 (June 22, 2020): 4271. http://dx.doi.org/10.3390/app10124271.

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Chemical looping gasification (CLG) is a novel gasification technique, allowing for the production of a nitrogen-free high calorific synthesis gas from solid hydrocarbon feedstocks, without requiring a costly air separation unit. Initial advances to better understand the CLG technology were made during first studies in lab and bench scale units and through basic process simulations. Yet, tailored process control strategies are required for larger CLG units, which are not equipped with auxiliary heating. Here, it becomes a demanding task to achieve autothermal CLG operation, for which stable reactor temperatures are obtained. This study presents two avenues to attain autothermal CLG behavior, established through equilibrium based process simulations. As a first approach, the dilution of active oxygen carrier materials with inert heat carriers to limit oxygen transport to the fuel reactor has been investigated. Secondly, the suitability of restricting the air flow to the air reactor in order to control the oxygen availability in the fuel reactor was examined. Process simulations show that both process control approaches facilitate controlled and de-coupled heat and oxygen transport between the two reactors of the chemical looping gasifier, thus allowing for efficient autothermal CLG operation. With the aim of inferring general guidelines on how CLG units have to be operated in order to achieve decent synthesis gas yields, different advantages and disadvantages associated to the two suggested process control strategies are discussed in detail and optimization avenues are presented.

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7

Roussis, Vassilios, Constantinos Vagias, Christina Tsitsimpikou, and Nina Diamantopoulou. "Chemical Variability of the Volatile Metabolites from the Caribbean Corals of the Genus Gorgonia." Zeitschrift für Naturforschung C 55, no. 5-6 (June 1, 2000): 431–41. http://dx.doi.org/10.1515/znc-2000-5-620.

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The chemical composition of the investigated gorgonians showed a high level of individual variation and the colonies, according to their major contributors, were assigned to 10 distinct chemical profiles, among which A , C, E , and G were them ost abundant ones. From the metabolites identified in the present study, either by means of GC /MS or using NMR techniques after conventional separation procedures, the novel cyclic ether 5,10-epoxymuurolane is found in significant quantities in D and I chemical profiles. Furanotriene, isofuranotriene and furanodiene could be referred as the most common metabolites of the genus, since they are found in 6 out of 10 chemical profiles. Isosericenine is, also, a significant contributor of H and I chemical profiles. A number of sesquiterpene hydrocarbons, such as curzerene, bicyclogermacrene, valencene, β-bourbonene and β -elemene, along with the oxygenated sesquiterpenes elemanolide and furoventalene, are present at varying concentrations in the majority of the chemical profiles. Metabolites of high discriminant value are: α-himachalene for the K chemical profile, α -santalene and its oxygenated derivatives for the G chemical profile and the three geometrical isomers of germacrone for the F chemical profile. Several chemical profiles show ed narrow geographic distribution. Most of the chemical profiles are located in the north, while F inhabits mainly southern sites and the others are equally distributed. Finally, 91 % of the chemical profiles of the gorgonian colonies appeared to grow in all depths, while 9 % did not inhabit deep -water environments. Most chemical profiles are less frequent at higher water depths with the exception of chemical profiles A and C.

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8

McKellar, Scott, Jorge Sotelo, John Mowat, Paul Wright, and Stephen Moggach. "Perflourocarbon liquid under pressure: a medium for gas delivery." Acta Crystallographica Section A Foundations and Advances 70, a1 (August 5, 2014): C160. http://dx.doi.org/10.1107/s2053273314098398.

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Materials with applications in gas storage and separation are of enormous interest across many disciplines of science. This has been driven in large part by advances in carbon sequestration technologies in line with global government targets for cleaner energy and the reduction of carbon dioxide (CO2) emissions. Potential applications in this field include the removal of CO2 from flue gas mixtures before it enters the atmosphere, for example. Porous metal-organic frameworks (MOFs) are currently seen as one of the most promising types of materials for this purpose since they combine the desired features of high porosity, thermal stability and chemical versatility. Fundamental to such research is the requirement to optimise the quantity of gas that can be stored in the MOF. Evaluation of gas storage capacities is usually performed using time-consuming gravimetric or calorimetric analyses over a range of temperatures and pressures, and often requiring gram-scale quantites of material. Here, we present a novel method for gas delivery and calculation of gas storage capacity using a perflourocarbon (PFC) liquid. PFCs have long been recognised as useful due to their predisoposition for dissolving large volumes of gases such as CO2 and oxygen. They are chemically inert hydrocarbons in which the hydrogen atoms have been replaced with fluorine. We have used a PFC containing dissolved CO2 as a pressure-transmitting liquid in an in situ high-pressure single-crystal X-ray diffraction experiment. Application of industrially-achievable pressure within a diamond anvil cell causes the CO2 to be squeezed out of the liquid into a host crystal of a porous MOF as the system seeks to fill empty space and redistribute density upon contraction. Diffraction data from a crystal of Sc2BDC3 (BDC = 1,4-benzenedicarboxylate)[1] has allowed us to determine its maximum CO2 storage capacity, which is in perfect agreement with other methods. This result is the first of its kind and the technique has several notable advantages over other methods: it requires just one experimental step, can be performed at room temperature, and requires only one single crystal of solid material.

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9

Ilinitch, O. M., G. L. Semin, M. V. Chertova, and K. I. Zamaraev. "Novel polymeric membranes for separation of hydrocarbons." Journal of Membrane Science 66, no. 1 (February 1992): 1–8. http://dx.doi.org/10.1016/0376-7388(92)80085-x.

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10

Stichlmair, J., J. Schmidt, and R. Proplesch. "Electroextraction: A novel separation technique." Chemical Engineering Science 47, no. 12 (August 1992): 3015–22. http://dx.doi.org/10.1016/0009-2509(92)87003-9.

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11

YAN, NIANXI. "A Novel Separation Technique with Microcapsules." Mineral Processing and Extractive Metallurgy Review 17, no. 1-4 (October 1997): 257–76. http://dx.doi.org/10.1080/08827509708914151.

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12

Baig, Nadeem, and Tawfik A. Saleh. "Novel hydrophobic macroporous polypropylene monoliths for efficient separation of hydrocarbons." Composites Part B: Engineering 173 (September 2019): 106805. http://dx.doi.org/10.1016/j.compositesb.2019.05.016.

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13

KHAN, A., M. RIAZ, S. BUTT, and J. ZAIDI. "Novel modified alumina: Synthesis, characterization and application for separation of hydrocarbons." Separation and Purification Technology 55, no. 3 (July 1, 2007): 396–99. http://dx.doi.org/10.1016/j.seppur.2007.03.010.

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14

Mirzabeigi, Michael N., Ian L. Valerio, Hani Sbitany, and Guy M. Stofman. "A Novel Minimally Invasive Technique for Components Separation." Plastic and Reconstructive Surgery 128, no. 2 (August 2011): 99e—101e. http://dx.doi.org/10.1097/prs.0b013e31821ef274.

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15

Muddukrishna, S. N., D. V. S. Narasimnan, and C. N. Desai. "A novel technique for the separation of99mTc from99Mo." Journal of Radioanalytical and Nuclear Chemistry Articles 140, no. 1 (May 1990): 153–57. http://dx.doi.org/10.1007/bf02037372.

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16

Ying, Tung-yu, F. Coyne Prenger, Laura A. Worl, Michael D. Johnson, Joseph A. Waynert, and Robert M. Wingo. "A Novel Magnetic Separation Technique: Selective Separation of Ultrafine Particles by Magnetophoresis." Separation Science and Technology 39, no. 12 (September 1, 2004): 2915–30. http://dx.doi.org/10.1081/ss-200031665.

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17

Kurganov, A., K. K. Unger, and F. Eisenbeiß. "Separation of polycyclic aromatic hydrocarbons under isocratic conditions by a column switching technique." Chromatographia 39, no. 3-4 (August 1994): 175–79. http://dx.doi.org/10.1007/bf02274497.

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18

Nuzhdin, A. L., A. S. Shalygin, E. A. Artiukha, A. M. Chibiryaev, G. A. Bukhtiyarova, and O. N. Martyanov. "HKUST-1 silica aerogel composites: novel materials for the separation of saturated and unsaturated hydrocarbons by conventional liquid chromatography." RSC Advances 6, no. 67 (2016): 62501–7. http://dx.doi.org/10.1039/c6ra06522h.

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19

Patil, D. P., and B. K. Parekh. "Thermo-adhesive Separation: a Novel Dry Coal Beneficiation Technique." Mining, Metallurgy & Exploration 39, no. 1 (January 6, 2022): 23–30. http://dx.doi.org/10.1007/s42461-021-00519-3.

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20

Pungor, Erno, Noubar B. Afeyan, Neal F. Gordon, and Charles L. Cooney. "Continuous Affinity–Recycle Extraction: A Novel Protein Separation Technique." Nature Biotechnology 5, no. 6 (June 1987): 604–8. http://dx.doi.org/10.1038/nbt0687-604.

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21

Mirzabeigi, MN, I. Valerio, and G. Stofman. "187C: A NOVEL MINIMALLY INVASIVE TECHNIQUE FOR COMPONENT SEPARATION." Plastic and Reconstructive Surgery 125, Supplement (June 2010): 123. http://dx.doi.org/10.1097/01.prs.0000371921.65391.50.

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22

Wang, Yong-Sheng, Xue-Jie Zhang, Ya-Qi Ba, Tian-Yi Li, Guang-Ping Hao, and An-Hui Lu. "Recent Advances in Carbon-Based Adsorbents for Adsorptive Separation of Light Hydrocarbons." Research 2022 (June 21, 2022): 1–21. http://dx.doi.org/10.34133/2022/9780864.

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Анотація:

Light hydrocarbons (LHs) separation is an important process in petrochemical industry. The current separation technology predominantly relies on cryogenic distillation, which results in considerable energy consumption. Adsorptive separation using porous solids has received widespread attention due to its lower energy footprint and higher efficiency. Thus, tremendous efforts have been devoted to the design and synthesis of high-performance porous solids. Among them, porous carbons display exceptional stability, tunable pore structure, and surface chemistry and thus represent a class of novel adsorbents upon achieving the matched pore structures for LHs separations. In this review, the modulation strategies toward advanced carbon-based adsorbents for LHs separation are firstly reviewed. Then, the relationships between separation performances and key structural parameters of carbon adsorbents are discussed by exemplifying specific separation cases. The research findings on the control of the pore structures as well as the quantification of the adsorption sites are highlighted. Finally, the challenges of carbonaceous adsorbents facing for LHs separation are given, which would motivate us to rationally design more efficient absorbents and separation processes in future.

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23

Jannatdoust, E., A. A. Babaluo, F. Abbasi, M. Akhfash Ardestani, and M. Peyravi. "A new technique for preparation of PDMS/ceramic nanocomposite membrane for gaseous hydrocarbons separation." Journal of Applied Polymer Science 126, no. 3 (April 25, 2012): 1077–87. http://dx.doi.org/10.1002/app.36771.

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24

Jain, Abhay K., Rajesh K. Srivastava, Manoj K. Gupta, and Suresh K. Das. "A novel technique in membrane separation processes: Electroosmotic separation of benzene in ethanol solution." Journal of Membrane Science 78, no. 1-2 (March 1993): 53–61. http://dx.doi.org/10.1016/0376-7388(93)85247-t.

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25

HIROKAWA, Yoshihiro, Hirotsugu INOUE, Keisuke HAYABUSA, Kikuo KISHIMOTO, and Toshikazu SHIBUYA. "A Novel Technique for Stress Separation in Thermoelastic Stress Analysis." Proceedings of The Computational Mechanics Conference 2000.13 (2000): 425–26. http://dx.doi.org/10.1299/jsmecmd.2000.13.425.

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26

Ho, Y. M., J. Gani, B. D. Draganic, and S. R. Smith. "Bladeless stoma creation using muscle separation technology: a novel technique." Techniques in Coloproctology 18, no. 3 (July 4, 2013): 299–300. http://dx.doi.org/10.1007/s10151-013-1041-8.

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27

Vogel, Jens H., and Karl-Heinz Kroner. "Controlled shear filtration: A novel technique for animal cell separation." Biotechnology and Bioengineering 63, no. 6 (June 20, 1999): 663–74. http://dx.doi.org/10.1002/(sici)1097-0290(19990620)63:6<663::aid-bit4>3.0.co;2-0.

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28

Ma, Feng, Zhijia Yu, Jun Wang, Jie Ding, Weiqin Xu, and Ziqiu Shen. "A novel separation technique - gas carrying evaporation: theory and application." Journal of Chemical Technology & Biotechnology 78, no. 2-3 (2003): 173–80. http://dx.doi.org/10.1002/jctb.729.

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29

Mohanty, Biswajit, and Gopal Avashthi. "Theoretical investigation of C1–C4 hydrocarbons adsorption and separation in a porous metallocavitand." RSC Advances 12, no. 52 (2022): 34053–65. http://dx.doi.org/10.1039/d2ra07183e.

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The light hydrocarbon C1–C4 has been adsorbed and separated by using the pillarplex as the separating medium. The distinctive high binding energy and selective separation at ambient conditions is the unique strength of this novel metallocavitand.

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30

Lu, Ningning, and Donglai Xie. "Novel Membrane Reactor Concepts for Hydrogen Production from Hydrocarbons: A Review." International Journal of Chemical Reactor Engineering 14, no. 1 (February 1, 2016): 1–31. http://dx.doi.org/10.1515/ijcre-2015-0050.

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AbstractMembrane reactors are attracting increasing attention for ultrapure hydrogen production from fossil fuel, integrating catalytic reaction and separation processes into one single unit thus can realize the removal of hydrogen or introduction of reactant in situ, which removes the thermodynamic bottleneck and improves hydrogen yield and selectivity. In this review, the state-of-the-art concepts for hydrogen production through membrane reactors are introduced, mainly including fixed bed membrane reactors, fluidized bed membrane reactors, and micro-channel membrane reactors, referring higher hydrocarbons as feedstock, such as ethanol, propane, or heptane; novel heating methods, like solar energy realized through molten salt; new modular designs, including panel and tubular configurations; ultra-compact micro-channel designs; carbon dioxide capture with chemical looping; multifuel processors for liquid and/or solid hydrocarbons; etc. Recent developments and commercialization hurdles for each type of membrane reactor are summarized. Modeling the reactor is fundamental to explore complex hydrodynamics in reactor systems, meaningful to investigate the effects of some important operating factors on reactor performances. Researches for reactor modeling are also discussed. Reaction kinetics for hydrocarbons reforming and reactor hydrodynamics are summarized respectively. Cold model is introduced to investigate physical phenomena in reactors.

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31

Dohnke, Karl Otto, Korbinian Kaspar, and Dirk Lewke. "Comparison of Different Novel Chip Separation Methods for 4H-SiC." Materials Science Forum 821-823 (June 2015): 520–23. http://dx.doi.org/10.4028/www.scientific.net/msf.821-823.520.

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Mechanical blade dicing is a state-of-the-art technique for the chip separation of SiC devices. Due to the hardness of SiC this technique suffers from low feed rate and high wear of the diamond coated dicing blade, resulting in the risk of uncontrolled tool breakage during the dicing process. With the upcoming transition to 150 mm diameter of SiC wafers this technique will most probably reach its limit. For dicing SiC wafers of those diameters on a productive scale three alternative dicing technologies are considered in this paper: ablation laser dicing, Stealth Dicing and Thermal Laser Separation. All these methods are based on laser processing. The benefits of these technologies are discussed in detail and compared to the classical mechanical diamond blade dicing, including a brief summary of first experimental results on each of the three laser dicing technologies.

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32

Lv, Dong-Can, Yun-Quan Liu, Shen-Jia Zhu, Yue-Yuan Ye, and Duo Wang. "A novel process for the production and separation of heavier hydrocarbons from sorbitol-derived oil." Fuel 150 (June 2015): 457–63. http://dx.doi.org/10.1016/j.fuel.2015.02.013.

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33

Ghanim, MotasemH, and MohdZ Abdullah. "Novel Technique for Improving the Amperometric Resolution in DNA Separation Biochip." Sensor Letters 14, no. 8 (August 1, 2016): 780–85. http://dx.doi.org/10.1166/sl.2016.3557.

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34

Zhuang, Guo-Liang, Ming-Yen Wey, and Hui-Hsin Tseng. "A novel technique using reclaimed tire rubber for gas separation membranes." Journal of Membrane Science 520 (December 2016): 314–25. http://dx.doi.org/10.1016/j.memsci.2016.07.044.

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35

Wang, Y. K., P. Zhou, X. Y. Deng, Q. Li, and D. J. Zhao. "A Novel Pulsed Microblowing Technique to Improve Flow Separation Over Flap." Procedia Engineering 67 (2013): 25–49. http://dx.doi.org/10.1016/j.proeng.2013.12.003.

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36

Brill, Jeffrey H., and Wolfgang Bertsch. "A novel micro-technique for the analysis of the cuticular hydrocarbons of insects." Insect Biochemistry 15, no. 1 (January 1985): 49–53. http://dx.doi.org/10.1016/0020-1790(85)90043-5.

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37

Cheng, Fang, Wu Bing-Iiang, Zhang Wu-ming, and Zhou Xing-yao. "Separation of dopamine and epinephrine by a novel electrophoresis technique with nafion membrane as separation column." Wuhan University Journal of Natural Sciences 9, no. 1 (January 2004): 102–4. http://dx.doi.org/10.1007/bf02912728.

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38

Zhang, Yuanbin, Lifeng Yang, Lingyao Wang, Xili Cui, and Huabin Xing. "Pillar iodination in functional boron cage hybrid supramolecular frameworks for high performance separation of light hydrocarbons." Journal of Materials Chemistry A 7, no. 48 (2019): 27560–66. http://dx.doi.org/10.1039/c9ta09928j.

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Анотація:

A novel ultramicroporous boron cage-hybrid supramolecular framework BSF-2 comprising cluster [B₁₂H₁₁I]²⁻ pillars was designed for highly selective light hydrocarbon separation.

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39

Maiga, Deogratius T., Rose W. Kibechu, Bhekie B. Mamba, Titus A. M. Msagati, and Terence T. Phadi. "Preparation of Novel Solid Phase Extraction Sorbents for Polycyclic Aromatic Hydrocarbons (PAHs) in Aqueous Media." Molecules 28, no. 16 (August 18, 2023): 6129. http://dx.doi.org/10.3390/molecules28166129.

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In this study, functionalized mesoporous silica was prepared and characterized as a stationary phase using various analytical and solid-state techniques, including a Fourier-transform infrared (FTIR) spectrometer, thermogravimetric analysis, and nitrogen sorption. The results confirmed the successful synthesis of the hybrid stationary phase. The potential of the prepared hybrid mesoporous silica as a solid-phase extraction (SPE) stationary phase for separating and enriching polycyclic aromatic hydrocarbons (PAHs) in both spiked water samples and real water samples was evaluated. The analysis involved extracting the PAHs from the water samples using solid-phase extraction and analyzing the extracts using a two-dimensional gas chromatograph coupled to a time-of-flight mass spectrometer (GC × GC-TOFMS). The synthesized sorbent exhibited outstanding performance in extracting PAHs from both spiked water samples and real water samples. In the spiked water samples, the recoveries of the PAHs ranged from 79.87% to 95.67%, with relative standard deviations (RSDs) ranging from 1.85% to 8.83%. The limits of detection (LOD) for the PAHs were in the range of 0.03 µg/L to 0.04 µg/L, while the limits of quantification (LOQ) ranged from 0.05 µg/L to 3.14 µg/L. Furthermore, all the calibration curves showed linearity, with correlation coefficients (r) above 0.98. Additionally, the results from real water samples indicated that the levels of individual PAH detected ranged from 0.57 to 12.31 µg/L with a total of 44.67 µg/L. These findings demonstrate the effectiveness of the hybrid mesoporous silica as a promising stationary phase for solid-phase extraction and sensitive detection of PAHs in water samples.

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40

Grinevich, Yu, L. Starannikova, Yu Yampolskii, M. Gringolts, and E. Finkelshtein. "Solubility controlled permeation of hydrocarbons in novel highly permeable polymers." Journal of Membrane Science 378, no. 1-2 (August 2011): 250–56. http://dx.doi.org/10.1016/j.memsci.2011.05.009.

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41

Huang, Kun, Shuting Wang, Muju Sun, and Luyao Tang. "Techno-Economic Comparison and Analysis of a Novel NGL Recovery Scheme with Three Patented Schemes." Open Petroleum Engineering Journal 10, no. 1 (February 28, 2017): 19–28. http://dx.doi.org/10.2174/1874834101701010019.

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Анотація:

At present, most of the light hydrocarbons (LH) separation processes that have been proposed lack the flexibility of receiving various feed components, thereby leading to an unstable operation in the liquid natural gas (LNG) receiving terminal. In response, a novel light hydrocarbons separation process (PSP) is proposed in this paper. Previously, some parameters and processes were improved upon and patented as US 7165423 B2, US 7069743 B2, and WO/2012/054729, which are respectively named as LTP, NCP, and NLP. Based on the analysis of LNG’s component statistical data in China, this paper conducts a techno-economic comparison and analysis of four kinds of LH separation process under four groups of typical feed-in components. The comparison results reveal that the system energy consumption of LTP is increased by the heater, and the higher the heavy hydrocarbon content in the feed components, the more obvious the increase in the process’s energy consumption is. NCP has the highest ethane recovery rate; however, its capital cost is too high, especially for the distillation column investment. NLP has the highest operating cost due to compressor use. Compared to the others, the PSP has the best economic benefit for specific performance: its capital cost is 18% less than that of NCP, its operating cost is 71.8% less than that of NLP, its net profit is 8% higher than that of NLP, its total investment cost is 71.7% lower than that of NLP, and its investment recovery period is the shortest. In conclusion, the PSP can be economically and efficiently used in China LNG receiving terminal, thereby generating the flexibility to receive multiple feed components.

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42

Zhou, Ran, Feng Bai, and Cheng Wang. "Magnetic separation of microparticles by shape." Lab on a Chip 17, no. 3 (2017): 401–6. http://dx.doi.org/10.1039/c6lc01382a.

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Анотація:

We demonstrated a novel technique of separating microparticles by shape with a uniform magnetic field. The magnetic torque breaks the rotational symmetry of the particle and causes shape-dependent migration.

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43

Elless, M. P., M. E. Timpson, and S. Y. Lee. "Concentration of Uranium Particulates from Soils Using a Novel Density-Separation Technique." Soil Science Society of America Journal 61, no. 2 (1997): 626. http://dx.doi.org/10.2136/sssaj1997.03615995006100020036x.

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44

Yamada, K., and T. Kuriyama. "A novel degree of freedom separation technique in a multi-axis accelerometer." Sensors and Actuators A: Physical 43, no. 1-3 (May 1994): 120–27. http://dx.doi.org/10.1016/0924-4247(93)00678-w.

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45

Mavaddati, Samira. "A Novel Singing Voice Separation Method Based on a Learnable Decomposition Technique." Circuits, Systems, and Signal Processing 39, no. 7 (January 8, 2020): 3652–81. http://dx.doi.org/10.1007/s00034-019-01338-0.

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46

Wang, Yao Nan, Chiufeng Lin, S. T. Wu, C. L. Chang, H. T. Chen, Chien Hsiung Tsai, and Lung Ming Fu. "Experimental Investigation of High-Resolution Injection Technique in Microfluidic Chips." Materials Science Forum 505-507 (January 2006): 409–14. http://dx.doi.org/10.4028/www.scientific.net/msf.505-507.409.

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This paper presents an experimental investigation on the use of high-resolution injection techniques to deliver sample plugs within electrophoresis microchips. Two novel injection microfluidic chips are proposed, which employ conventional cross-shaped and U-shaped injection system combined with an expander to deliver high-quality sample plugs for detection in separation channel. The valving characteristics on microfluidic devices are controlled through appropriate manipulations of the electric potential strengths during the sample injection and separation steps. These novel injection techniques developed in this study has an exciting potential for use in high-quality, high-throughput chemical analysis applications and in many other applications throughout the field of micro-total-analysis systems.

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47

Kim, Jaewon, and Abhijeet Ghosh. "Polarized Light Field Imaging for Single-Shot Reflectance Separation." Sensors 18, no. 11 (November 6, 2018): 3803. http://dx.doi.org/10.3390/s18113803.

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We present a novel computational photography technique for single-shot separation of diffuse/specular reflectance, as well as novel angular domain separation of layered reflectance. We present two imaging solutions for this purpose: two-way polarized light-field (TPLF) imaging and four-way polarized light-field (FPLF) imaging. TPLF imaging consists of a polarized light-field camera, which simultaneously captures two orthogonal states of polarization. A single photograph of a subject acquired with the TPLF camera under polarized illumination then enables standard separation of diffuse (depolarizing) and polarization preserving specular reflectance using light-field sampling. We further demonstrate that the acquired data also enable novel angular separation of layered reflectance including separation of specular reflectance and single scattering in the polarization preserving component, as well as separation of shallow scattering from deep scattering in the depolarizing component. FPLF imaging further generalized the functionality of TPLF imaging under uncontrolled unpolarized or partially polarized illumination such as outdoors. We apply our approach for efficient acquisition of facial reflectance including diffuse and specular normal maps and novel separation of photometric normals into layered reflectance normals for layered facial renderings. We validate our proposed single-shot layered reflectance separation under various imaging conditions and demonstrate it to be comparable to an existing multi-shot technique that relies on structured lighting while achieving separation results under a variety of illumination conditions.

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48

Яковенко, И. С., А. Д. Киверин, А. М. Коршунов та Б. В. Кичатов. "Пределы горения вспененной эмульсии с высоким содержанием воды". Письма в журнал технической физики 45, № 24 (2019): 25. http://dx.doi.org/10.21883/pjtf.2019.24.48798.18010.

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The paper considers a novel perspective approach for the burning out of water-saturated hydrocarbons in a form of the foamed emulsion that can maintain combustibility even at water content more than 90% wt. On the basis of the carried out numerical-theoretical analysis, it was proposed that the fundamental physical mechanism determining the wide range of combustibility limits of the foamed emulsion is related to the natural spatial separation between the combustion zone and water evaporation region. It was shown that during combustion the foamed emulsion mainly decays into emulsion droplets. Nonstationary modes of the combustion are determined by the foam structure. Obtained results define the applicability area of the considered approach for water-saturated hydrocarbons burning out.

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49

Ohrem, Sveinung, Håvard Skjefstad, Milan Stanko, and Christian Holden. "Controller Design and Control Structure Analysis for a Novel Oil–Water Multi-Pipe Separator." Processes 7, no. 4 (April 2, 2019): 190. http://dx.doi.org/10.3390/pr7040190.

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To enable more efficient production of hydrocarbons on the seabed in waters where traditional separator equipment is infeasible, the offshore oil and gas industry is leaning towards more compact separation equipment. A novel multi-pipe separator concept, designed to meet the challenges of subsea separation, has been developed at the Department of Geoscience and Petroleum at the Norwegian University of Science and Technology. In this initial study, a control structure analysis for the novel separator concept, based on step-response experiments, is presented. Proportional-integral controllers and model reference adaptive controllers are designed for the different control loops. The proportional-integral controllers are tuned based on the well-established simple internal model control tuning rules. Both control methods are implemented and tested on a prototype of the separator concept. Different measurements are controlled, and results show that the performance of the separator under varying inlet conditions can be improved with proper selection of control inputs and measurements.

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50

Liu, Chuen-Ying, Cho-Chun Hu, and Cheng-Lung Yang. "Synthesis and characterization of a novel wall coated capillary column for the separation of polycyclic aromatic hydrocarbons." Journal of Chromatography A 773, no. 1-2 (June 1997): 199–208. http://dx.doi.org/10.1016/s0021-9673(97)00212-4.

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