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Journal articles on the topic 'Gas Absorption and adsorption'

Author: Grafiati

Published: 4 June 2021

Last updated: 13 February 2022

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1

Gaur, Ankur, Jin-Won Park, Sanjeev Maken, Ho-Jun Song, and Jong-Jin Park. "Landfill gas (LFG) processing via adsorption and alkanolamine absorption." Fuel Processing Technology 91, no. 6 (2010): 635–40. http://dx.doi.org/10.1016/j.fuproc.2010.01.010.

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2

Al-Saudi, Ahmed, Abdulaziz Aljalal, Watheq Al-Basheer, Khaled Gasmi, and Samer Qari. "Pore size assessment using gas in scattering media absorption spectroscopy and gas adsorption." Applied Optics 59, no. 4 (2020): 1130. http://dx.doi.org/10.1364/ao.381730.

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3

Zhang, Hua, Tian Ma, and Jie Zhang. "The Adsorptive Performance and Kinetics of Hemp Stem." Advanced Materials Research 332-334 (September 2011): 1676–81. http://dx.doi.org/10.4028/www.scientific.net/amr.332-334.1676.

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In view of the unique porous structure of hemp stem, the comparison experiments were implemented on adsorption properties of hemp stem powder and Abies holophylla Maxim powder to formaldehyde, benzene and TVOC. In addition, on the basis of preliminary study on solid-gas adsorption kinetics of hemp stem, applicability of several adsorption theories was analyzed versus solid-gas adsorption. The results showed that the unique structure endowed hemp stem better adsorption properties than Abies holophylla Maxim’s. However, for different adsorbents, the adsorption kinetics characters differed obviou

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Li, Cai Xia, Sheng Ju He, Dan Yu Jiang, and Qiang Li. "Hydrogen Fluoride Adsorption Ability of some Inorganic Compounds." Advanced Materials Research 412 (November 2011): 1–4. http://dx.doi.org/10.4028/www.scientific.net/amr.412.1.

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Based on the traditional method of adsorption of the hydrogen fluoride, we mainly selected some typical inorganic compounds α-Al2O3, γ-Al2O3, CaF2and NaF as the adsorbents, studied and discussed the effect of their adsorption ability of the hydrogen fluoride gas. Comprehensive comparison showed that NaF was the best adsorbent for hydrogen fluoride gas. Meanwhile, as the raw materials for the production of hydrogen fluoride gas, CaF2was also used as an adsorbent, and the measurement showed that CaF2has barely adsorption ability for hydrogen fluoride gas. Using the electronic analytical balance

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Махмудова, Л. Ш., Х. Х. Ахмадова, Ж. Т. Хадисова, З. А. Абдулмежидова, and Э. У. Идрисова. "INVESTIGATION OF EFFICIENCY OF NATURAL GAS DRYING BY ABSORPTION AND ADSORPTION METHODS." Вестник ГГНТУ. Технические науки, no. 4(22) (December 25, 2020): 19–28. http://dx.doi.org/10.34708/gstou.2020.27.16.003.

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В статье проанализированы современные методы осушки природного газа для дальнейшей переработки его в метано-водородную смесь. Приведены результаты исследования абсорбционной и адсорбционной осушки природного газа жидкими реагентами (этиленгликолями) и твердыми адсорбентами (цеолитами и бентонитами). Показано, что природные бентонитовые глины обладают сравнительно небольшой адсорбционной активностью, их активация водными растворами Na2CО3 и H2SO4 способствует повышению адсорбционной активности, и их применение в комплексе с другими адсорбентами способствует значительному повышению процессов адс

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Wu, Jiang, Qian Yan Liu, Shuai Qi Meng, et al. "Research on the Absorption Characteristics of Activated Carbon Prepared by Biomass." Advanced Materials Research 354-355 (October 2011): 707–10. http://dx.doi.org/10.4028/www.scientific.net/amr.354-355.707.

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The biomass carbons were studied with ZnCl2 as activating agent, methylene blue as index and its Hg adsorption experiment was conducted. The adsorption of soybean stem activated carbon for methylene blue was 149.84μg/g, and its adsorption capacity to Hg in flue gas in 4 hours was 14.57μg and penetration rate was 5.30% at the conditions of 600°C activation temperature, 90 min activation time and ZnCl2 concentration 50%, and the mechanism was analyzed.

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7

Kandagal, Vinay S., Jennifer M. Pringle, Maria Forsyth, and Fangfang Chen. "Predicting gas selectivity in organic ionic plastic crystals by free energy calculations." RSC Advances 11, no. 32 (2021): 19623–29. http://dx.doi.org/10.1039/d1ra01844b.

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The free energy calculation shows the different free energy changes of the adsorption and absorption of gas molecules into an organic ionic plastic crystal, successfully predicting the gas selectivity of this new type of gas separation material.

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8

Yang, Hua Ping, and Ming Li. "Analysis of Adsorbed Methane Gas Structure and Mullikan Charges." Advanced Materials Research 962-965 (June 2014): 1118–22. http://dx.doi.org/10.4028/www.scientific.net/amr.962-965.1118.

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The methane molecule model, the coal molecule model and the absorption model of coal and methane have been thoroughly investigated using the DFT method,Van der Walls force radius as boundary conditions as well. The investigations focuses on optimizing the three types of model structure. Meanwhile, adsorption equilibrium geometries with 6-311G++ basic sets have been established. Through the model analysis of the changes in the structure and Millikan charge from free state to the adsorption states, the results indicate that the adsorption process of methane gas on the coal in the Van der Walls f

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9

Shen, Wei, Li Ye, Zhi Xia Wang, Rong Chang Chen, and Jun Feng Chen. "A Novel Adsorption Apparatus for Processing Hazardous Chemicals Diffusion and Volatilization of Inland Waterway Transportation." Advanced Materials Research 864-867 (December 2013): 1200–1203. http://dx.doi.org/10.4028/www.scientific.net/amr.864-867.1200.

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A Novel adsorption apparatus for processing hazardous chemicals diffusion and volatilization of inland waterway transportation is developed. The adsorption apparatus is lightweight and has high effective absorption capability for processing the gas chemicals produced by inland river transportation. Meanwhile, the experiment for analysis and processing for the bulk chemicals gas is carried out. The results showed that the concentration of chemicals gas decreased by 69-83% comparing with that not using the device.

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10

Langeroudi, Elahe Ghasemian, Freddy Kleitz, Maria C. Iliuta, and Faïçal Larachi. "Grafted Amine/CO2 Interactions in (Gas−)Liquid−Solid Adsorption/Absorption Equilibria." Journal of Physical Chemistry C 113, no. 52 (2009): 21866–76. http://dx.doi.org/10.1021/jp908087e.

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11

Lei, S. Y., S. Luan, and H. Yu. "Co-doped phosphorene: Enhanced sensitivity of CO gas sensing." International Journal of Modern Physics B 32, no. 06 (2018): 1850068. http://dx.doi.org/10.1142/s0217979218500686.

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First-principle calculation was carried out to systematically investigate carbon monoxide (CO) adsorption on pristine and cobalt (Co)-doped phosphorenes (Co-bP). Whether or not CO is adsorped, pristine phosphorene is a direct-band-gap semiconductor. However, the bandgap of Co-bP experiences direct-to-indirect transition after CO molecule adsorption, which will affect optical absorption considerably, implying that Co doping can enhance the sensitivity of phosphorene as a CO gas sensor. Moreover, Co doping can improve an adsorption energy of CO to 1.31 eV, as compared with pristine phosphorene (

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12

Anh Hoang, Huynh, and Huynh Quyen. "The Investigating the red phenol absorption by multi-walled carbon nanotubes." Science and Technology Development Journal - Natural Sciences 4, no. 1 (2020): First. http://dx.doi.org/10.32508/stdjns.v4i1.718.

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Since the end of the 20th century, nanomaterials such as carbon nanotubes (CNTs) have been considered as one of the greatest achievements in the field of material science. Nowadays, further research on CNTs is still being conducted to unfold the full potential of this material. Generally, CNTs production methods have been extensively studied, specifically on CNTs synthesis route via liquefied hydrocarbon gas in the presence of a catalyst. From the synthesized material, further investigation including characterization and investigation of this nano size system’s effects on the physics, chemical

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13

Kinigoma, B. S., and G. O. Ani. "Comparison of gas dehydration methods based on energy consumption." Journal of Applied Sciences and Environmental Management 20, no. 2 (2016): 253–58. http://dx.doi.org/10.4314/jasem.v20i2.4.

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This study compares three conventional methods of natural gas (Associated Natural Gas) dehydration to carry out the dehydration process and suitability of use on the basis of energy requirement. These methods are Triethylene Glycol (TEG) absorption, solid desiccant adsorption and condensation. Analyses performed were based on dehydration of Natural Gas saturated with 103Nm3/h water content at a temperature range of -10O C to 30oC, and gas pressure variation between 7MPa and 20MPa. This analysis and study showed that energy required for all three processes decreases with increase in pressure, b

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14

Memon, Asadullah, Aifen Li, Xiaoxia Ren, et al. "Measurement of shale gas in place based on different approaches and their comparison study." Thermal Science, no. 00 (2019): 467. http://dx.doi.org/10.2298/tsci190929467m.

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The understanding of gas sorption mechanism is essential to characterize the original gas-in-place for shale gas reservoirs. In this study, experimental data of five shale samples have been used to estimate the shale gas-in-place with new sights. Langmuir model is commonly used to measure the amount of adsorbed gas but this model does not include the amount of absorbed gas and its behavior. However, such gas usually contributes about 22% in respect to total gas storage even though its input remains undefined. Sorption model used in this study includes adsorbed and absorbed gas. Good results ar

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15

Lapshin, Dmitry N., Miguel Jorge, Eleanor E. B. Campbell, and Lev Sarkisov. "On competitive gas adsorption and absorption phenomena in thin films of ionic liquids." Journal of Materials Chemistry A 8, no. 23 (2020): 11781–99. http://dx.doi.org/10.1039/d0ta03419c.

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16

Berno, Bob, Abbas Nazri, and Ricardo Aroca. "Europium Bisphthalocyanine—NO2 Interactions in Monolayers: Spectroscopic and Electrical Measurements." Applied Spectroscopy 51, no. 10 (1997): 1525–30. http://dx.doi.org/10.1366/0003702971939046.

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The electronic and surface-enhanced resonant Raman spectra of europium bisphthalocyanine (EuPc2) are used to monitor the adsorption of NO2 onto EuPc2 Langmuir–Blodgett (LB) monolayer films. The reaction was also monitored in solution, and the complex formed was studied by electron paramagnetic resonance (EPR) spectroscopy. Conductivity measurements of the LB film have shown a two-stage process due to exposure to NO2 gas: adsorption on the surface, and absorption into the film. After a complete desorption by annealing, film conductivity rises continuously with time of exposure to gas to a satur

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17

Panyam, Varuneswara Reddy, Veda Sai Kolla, Lokesh Palawat, Ayush Sahu, and N. D. Banker. "Performance Comparison of a Vapor-Adsorption Cycle-Based Gas Turbine Inlet Air Cooling System for Different Refrigerants." International Journal of Air-Conditioning and Refrigeration 26, no. 01 (2018): 1850002. http://dx.doi.org/10.1142/s2010132518500025.

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Presently, to enhance the thermal efficiency of a gas turbine power plant, turbine inlet air cooling (TIAC) is the widely used technique. The conventional refrigeration methods like vapor compression refrigeration and evaporative cooling need electric power, hence absorption and adsorption refrigeration systems are attractive options as they can be powered using the waste heat energy of the exhaust gases. Adsorption system has advantages over absorption system like scalability, requirement of lower heat source temperature, absence of corrosion and crystallization. This paper focuses on the the

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18

Zhou, Wei Hong, Ji Ping Guo, and Hong Yan Tan. "Upgrading of Methane from Biogas by Pressure Swing Adsorption." Advanced Materials Research 236-238 (May 2011): 268–71. http://dx.doi.org/10.4028/www.scientific.net/amr.236-238.268.

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The researches about upgrading of methane from biogas by pressure swing absorption are introduced in this paper. Biogas contains 55~70% methane (CH4) which is the main component of natural gas. If other components of biogas are removed, biogas is upgraded to SNG (Substitute Natural Gas). The processes of upgrading of methane from biogas by PSA or VPSA (Vacuum Pressure Swing Adsorption) are presented. Different techniques which are used for upgrading of biogas are evaluated. Finally, prospect about this process is made.

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19

Karjalainen, M., A. Kontunen, M. Mäkelä, et al. "Recovery characteristics of different tube materials in relation to combustion products." International Journal for Ion Mobility Spectrometry 23, no. 2 (2020): 83–90. http://dx.doi.org/10.1007/s12127-020-00266-z.

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Abstract Common challenge in gas analyzers such as Ion Mobility Spectrometers (IMS) integrated into a measurement system is the reduced analysis speed that is partially limited by the temporal carry-over of sample molecules. It is caused by adsorption and absorption of the molecules into the gas tubes of the analyzer. We studied the recovery times of common tube materials: polyether ether ketone (PEEK), polytetrafluoroethylene (PTFE), fluorinated ethylene propylene (FEP), polyethylene (PE), steel 316 L, parylene C coated steel and Silconert® coated steel from organic combustion products. The t

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20

Orellana, M. F., A. E. Nelson, J. P. R. Carey, G. Heo, D. G. Boychuk, and P. W. Major. "Surface Analysis of Etched Molar Enamel by Gas Adsorption." Journal of Dental Research 87, no. 6 (2008): 532–36. http://dx.doi.org/10.1177/154405910808700607.

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Much research has been devoted to the study of etched enamel, since it is critical to bonding. Currently, there are no precise data regarding the etched-enamel specific surface area. The aim of this study was to characterize, by two different methods, the surface of human dental enamel in vitro after being etched. It was hypothesized that differences would be observed between specimens in terms of specific surface area and grade of etching. Sixteen third molar enamel samples were etched for 30 sec with 37% phosphoric acid prior to being viewed by SEM. Etched enamel surfaces were graded accordi

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Itoi, Hiroyuki, Takashi Tachikawa, Ryutaro Suzuki, et al. "A dry chemical method for dispersing Ir nanoparticles in the pores of activated carbon and their X-ray absorption spectroscopy analysis." New Journal of Chemistry 43, no. 46 (2019): 17927–31. http://dx.doi.org/10.1039/c9nj04659c.

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Ir nanoparticles are finely dispersed inside the pores of activated carbon (AC) via the gas phase adsorption of an organoiridium complex in the AC and subsequent heat treatment. X-ray absorption spectroscopy reveals the structure of the supported Ir.

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22

Scott Daniels, R., and Donald C. Wigfield. "Gas-phase adsorption losses of elemental mercury in cold-vapor atomic absorption spectrometry." Analytica Chimica Acta 248, no. 2 (1991): 575–77. http://dx.doi.org/10.1016/s0003-2670(00)84677-2.

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23

Hughes, R. C., P. A. Taylor, A. J. Ricco, and R. R. Rye. "Kinetics of Hydrogen Adsorption and Absorption: Catalytic Gate MIS Gas Sensors on Silicon." Journal of The Electrochemical Society 136, no. 9 (1989): 2653–61. http://dx.doi.org/10.1149/1.2097536.

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24

Ma, Qinglan, Jie Zong, Yuying Cheng, et al. "Modeling study on absorption-adsorption of gas in ZIF-8/absorbent slurry system." Fluid Phase Equilibria 506 (February 2020): 112396. http://dx.doi.org/10.1016/j.fluid.2019.112396.

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Holstvoogd, R. D., and W. P. M. Van Swaaij. "The influence of adsorption capacity on enhanced gas absorption in activated carbon slurries." Chemical Engineering Science 45, no. 1 (1990): 151–62. http://dx.doi.org/10.1016/0009-2509(90)87089-b.

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26

Sriyono, Sriyono, Atiqah M. Hilda, and Mia Kamayani. "Pemodelan dan Simulasi Proses Adsorpsi Gas Pengotor oleh Molecular Sieve pada Pendingin Rde dengan Software Chemcad." Prosiding Seminar Nasional Teknoka 3 (January 11, 2019): 69. http://dx.doi.org/10.22236/teknoka.v3i0.2918.

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The purity of RDE10 helium coolant should be maintained from various impurities gas due to water/air ingress that reacts with the reflector graphite (C). These impurities are CH4, CO, CO2, H2O, H2, O2, and N2 which can initiate oxidation corrosion or carburization-decarburization so the concentration should be maintain to be a minimum. The helium coolant is purified by Helium Purification System (HPS). One of the stages in HPS is adsorption by Molecular Sieve mainly for CO2 and H2O molecules. This paper discusses the influence of pressure, known as pressure swing adsorption (PSA) on the adsorp

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Ruomeng, Hou, Jia Ying, Lv Xiaomeng, Huang Yuanzheng, and Shen Keke. "Adsorption and photocatalytic degradation of gas-phase UDMH under simulated sunlight by AgBr/TiO2/rGA." RSC Advances 11, no. 21 (2021): 12583–94. http://dx.doi.org/10.1039/d1ra01325d.

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28

Vallaey, Brecht, Sambhu Radhakrishnan, Steven Heylen, et al. "Reversible room temperature ammonia gas absorption in pore water of microporous silica–alumina for sensing applications." Physical Chemistry Chemical Physics 20, no. 19 (2018): 13528–36. http://dx.doi.org/10.1039/c8cp01586d.

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Naumenko, Ksenia, Natalia Frolova, Oksana Petrusha, and Natalia Chepel. "THE METHOD OF DETERMINATION OF THE SORPTION CAPACITY OF ACTIVATED CARBON BY GAS CHROMATOGRAPHY." EUREKA: Life Sciences 1 (January 31, 2017): 12–18. http://dx.doi.org/10.21303/2504-5695.2017.00290.

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The article analyzes the possibility of gas chromatography use for determination of sorption capacity of adsorbents on the example of activated carbon BAC-A. The offered method provides the use of gas chromatograph with flame-ionizing detector and with nozzle geyser that is filled with studied adsorbent. At that the isotherms of absorption of substance are constructed by manifestation curve – desorption branch of substance peak on chromatogram. As a result the isotherms of absorption of isoamylol and camphor on activated carbon were constructed and the values of specific sorption capacity for

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Palatý, Zdeněk. "Errors in Measurement of Interfacial Area and Mass Transfer Coefficient in Liquid in Apparatus with Mobile Packing." Collection of Czechoslovak Chemical Communications 58, no. 6 (1993): 1345–53. http://dx.doi.org/10.1135/cccc19931345.

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The paper deals with an analysis of errors of measurement of interfacial area and mass transfer coefficient in liquid in an absorber with mobile packing. The system of CO2-NaOH has been used for the testing with recirculation of the adsorption solution. The error of measurement of the absorption solution temperature, CO2 concentration in the gas, the composition of absorption solution, the mass transfer coefficient in gas, and the volume of absorption solution at the beginning and at the end of the measurement have been investigated with regard to their effects upon the resulting values of spe

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Nikolaeva, L. A., and A. N. Khusnutdinov. "Purification of Gas Emissions of Chemical Industry Enterprises by Carbonaceous Cutting." Ecology and Industry of Russia 22, no. 8 (2018): 14–18. http://dx.doi.org/10.18412/1816-0395-2018-8-14-18.

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It is proposed to purify gas emissions of industrial enterprises by the adsorption method. As a sorption material, power industry waste is used — the cuttings for chemical treatment of water of water reclamation at Kazan CHPP-1, which is formed during coagulation and liming of natural water. The chemical composition of the cuttings, its technological characteristics, the isotherm of adsorption of hydrogen sulphide cuttings, its sorption capacity and water absorption are determined. The optimum characteristics of a batch adsorber with a fixed cuttings layer are calculated. The calculation of th

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Sun, Zhiguo, Yue Zhou, Shichao Jia, Yaru Wang, Dazhan Jiang, and Li Zhang. "Enhanced SO2 Absorption Capacity of Sodium Citrate Using Sodium Humate." Catalysts 11, no. 7 (2021): 865. http://dx.doi.org/10.3390/catal11070865.

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A novel method of improving the SO2 absorption performance of sodium citrate (Ci-Na) using sodium humate (HA–Na) as an additive was put forward. The influence of different Ci-Na concentration, inlet SO2 concentration and gas flow rate on desulfurization performance were studied. The synergistic mechanism of SO2 absorption by HA–Na and Ci-Na was also analyzed. The consequence shows that the efficiency of SO2 absorption by Ci-Na is above 90% and the desulfurization time added with the Ci-Na concentration rising from 0.01 to 0.1 mol/L. Both the desulfurization efficiency and time may increase wit

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Wen, Zhihui, Yunpeng Yang, Qi Wang, and Banghua Yao. "Mechanism and Characteristics of CH4/CO2/H2O Adsorption in Lignite Molecules." Geofluids 2021 (March 20, 2021): 1–11. http://dx.doi.org/10.1155/2021/5535321.

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Adsorption characteristics of coalbed methane (CBM) are significant to investigate the absorption of coal, shale, and porous media. In particular, adsorption characteristics of CH4, CO2, and H2O play an important role in predicting CBM output and geologic sequestration potentials of CO2 in research fields of CO2-enhanced CBM recovery (CO2-ECBM) and sequestration of CO2. In this work, adsorption characteristics of CH4, CO2, and H2O in lignite molecules were simulated through the grand canonical Monte Carlo (GCMC) method and molecular dynamics (MD) method. Research results demonstrated that give

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Santamarina, J. C., K. A. Klein, Y. H. Wang, and E. Prencke. "Specific surface: determination and relevance." Canadian Geotechnical Journal 39, no. 1 (2002): 233–41. http://dx.doi.org/10.1139/t01-077.

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Specific surface captures the combined effects of particle size and slenderness in a measurement that is independent and complementary to grain-size distribution. There are various methods to measure specific surface, including gas adsorption in dry conditions and selective molecular absorption in aqueous suspensions. The measurement procedure can have an important effect on measured values, yet such sensitivity is informative in itself. The amount of surface in a soil mass determines the balance between surface-related forces and gravimetricskeletal forces acting on a soil particle, affects

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Alias, Nur Hashimah, K. S. N. Kamarudi, Nurul Aimi Ghazali, T. A. T. Mohd, Arina Sauki, and Mohd Redwan Jaafar. "Carbon Dioxide Separation Using Amine Modified Zeolite in Pressure Swing Adsorption System." Key Engineering Materials 594-595 (December 2013): 160–67. http://dx.doi.org/10.4028/www.scientific.net/kem.594-595.160.

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Carbon dioxide (CO2) removal from natural gas attracts more attention than other impurities due to its corrosiveness property and it also possess no heating value in the sales natural gas. Amine based chemical absorption has been used commercially for CO2 separation in gas processing plant. However, the liquid amine based processes pose operating difficulties due to high regeneration energy, large equipments size and solvent leakage. This research studies modification of porous materials, zeolite NaY by grafting amine functional group using monoethanolamine directly to the surface of the solid

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Li, Xiangchun, Zhongbei Li, Fan Zhang, Qi Zhang, Baisheng Nie, and Yangyang Meng. "Nanopore Structure of Different Rank Coals and Its Quantitative Characterization." Journal of Nanoscience and Nanotechnology 21, no. 1 (2021): 22–42. http://dx.doi.org/10.1166/jnn.2021.18728.

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Based on gas adsorption theory, high-pressure mercury intrusion (HPMI), low-temperature liquid nitrogen gas adsorption (LT-N2GA), CO2 adsorption, scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR) and small-angle X-ray scattering (SAXS) techniques were used to analyze the pore structures of six coal samples with different metamorphisms in terms of pore volume, specific surface area (SSA), pore size distribution (PSD) and pore shape. Combined with the gas adsorption constant a, the influence and mechanism of the pore structure of different coal ranks on gas adsor

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Vlasenko, P. O., and D. N. Seryakov. "USE OF ADSORPTION OXYGEN CONCENTRATOR IN MEDICAL PRACTICE." Marine Medicine 4, no. 4 (2019): 55–63. http://dx.doi.org/10.22328/2413-5747-2018-4-4-55-63.

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The article deals with the use of pure oxygen in medicine. In a comparative vein, the main ways of providing medical and prophylactic institutions with oxygen are considered, information on the requirements for modern equipment of specialized medical facilities and departments is provided. Those problematic aspects of a fatigue, which are regularly encountered by the heads of medical institutions, are highlighted, taking into account many factors that were not taken into account when the well-established work of the centralized supply of medical oxygen (climate, the transport component, the ec

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Novitasari, Sholihah, Sriatun Sriatun, and Taslimah Taslimah. "Aluminum Pillared Clay (Al-PILC) for Adsorption of Dyes in Red Fruit Oil." Jurnal Kimia Sains dan Aplikasi 24, no. 1 (2021): 9–14. http://dx.doi.org/10.14710/jksa.24.1.9-14.

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Red fruit oil contains carotene, which is dark orange, so it is not very popular. Therefore, it is necessary to reduce the intensity of the color. Yesterday, in this study, the synthesis and characterization of Al-pillared clay (Al-PILC) from light and heavy clay fractions were carried out. The absorption capacity of red fruit carotene dyes was studied. The research stages included preparation, fractionation, activation, pillarization of clay with aluminum, characterization, and adsorption test for carotene dyes on red fruit. Characterization was carried out using X-ray Diffractometer (XRD) an

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Tao, Zhigang, Huixia Xu, Hongzhen Peng, and Weixin Liu. "Experimental System of Hydrodynamic Action of Dunhuang Mogao Grottoes under Temperature-Humidity-Mechanical (THM) Coupling." Geofluids 2020 (September 22, 2020): 1–23. http://dx.doi.org/10.1155/2020/8831284.

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In order to thoroughly investigate the weathering mechanism of the murals in Dunhuang Mogao Grottoes, based on the independently developed hydrodynamic test system of the surrounding rocks under the combined action of temperature, humidity, and stress, this study performed the liquid water adsorption test and gaseous water adsorption test of the surrounding rocks of the support body of Dunhuang Mogao Grottoes, as well as the softening test of the strength of liquid water adsorbed by the rock samples. The experimental results are as follows: (a) Q–t curve and lnw–lnt curve of the three types of

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Antonelli, Jhonatas, Cleber Antonio Lindino, Reinaldo Aparecido Bariccatti, Samuel Nelson Melegari Souza, and Anderson Miguel Lenz. "Lead adsorption and subsequent gasification with Pinus elliottii waste." Management of Environmental Quality: An International Journal 28, no. 6 (2017): 839–50. http://dx.doi.org/10.1108/meq-04-2016-0033.

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Purpose The purpose of this paper is to investigate the use of Pinus wood waste in lead adsorption as a remediation technique in aqueous medium and its subsequent use in obtaining synthesis gas. Design/methodology/approach The capacity of the timber in the lead adsorption was studied in aqueous medium at various pH, determining the amount adsorbed in equilibrium. Then, the same timber was added in a fixed bed, co-current flow of two stage gasifier type, working temperature of 900°C, for obtaining synthesis gas. The synthesis gas composition was evaluated by the spectrophotometry in the infrare

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Ting, Guo, Jiao Yuang, Tang Yanbing, et al. "Marking the status and development of marine VOCs recovery technology." E3S Web of Conferences 248 (2021): 01010. http://dx.doi.org/10.1051/e3sconf/202124801010.

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During the storage and transportation of crude oil, volatile organic vapors (VOCs) are generated. International organizations and relevant countries have formulated relevant regulations for VOCs emissions. This article introduces four kinds of oil and gas recovery technologies and their combined processes: absorption method, adsorption method, membrane separation method and condensation method. The advantages and disadvantages of different oil and gas recovery technologies are analyzed and the process performance is compared. It lists examples of the application of oil and gas recovery technol

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Feng, Dan-Dan, Hui-Ming Dong, Zheng-Yu Liu, Xiao-Jun Zhao, and En-Cui Yang. "Three microporous metal–organic frameworks assembled from dodecanuclear {NiII6LnIII6} subunits: synthesis, structure, gas adsorption and magnetism." Dalton Transactions 47, no. 43 (2018): 15344–52. http://dx.doi.org/10.1039/c8dt02816h.

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Three microporous MOFs with two different orientated {Ni<sup>II</sup>Ln<sup>III</sup>}<sub>6</sub> subunits exhibit high Ln<sup>III</sup>-independent gas uptake and absorption selectivity for CO<sub>2</sub> as well as Ln<sup>III</sup>-dominated slow magnetic relaxation and a magnetic cryogenic magnetocaloric effect.

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Yusubov, F. V., and E. F. Mansurov. "Research and Design of the Process for the Absorption of CO2 from Flue Gases." Ecology and Industry of Russia 24, no. 7 (2020): 63–67. http://dx.doi.org/10.18412/1816-0395-2020-7-63-67.

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A mathematical model is considered for choosing the optimal operating mode of an industrial absorption apparatus for CO2 emission from flue gases. The analysis of CO2 absorption from flue gases in dynamics and the hydraulic resistance of the nozzle of an industrial absorber are carried out. It was found that the temperature and pressure of the absorption process significantly affect the emission of CO2 from flue gases. It was determined that with an increase in the gas flow rate, the concentration of CO2 at the outlet of the absorber increases. As a result of the studies, the optimal mode of t

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Kim, Shin Won, Joo Seong Sohn, Hyun Keun Kim, Youngjae Ryu, and Sung Woon Cha. "Effects of Gas Adsorption on the Mechanical Properties of Amorphous Polymer." Polymers 11, no. 5 (2019): 817. http://dx.doi.org/10.3390/polym11050817.

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This study investigates the properties of a polymer–gas mixture formed through diffusion, based on the changes in the partial pressure and observed changes in the impact and tensile strengths owing to the gas dissolution. The high-pressure gas dissolves into a solid-state polymer through diffusion based on the difference in the partial pressure. This dissolved gas is present in the amorphous region within the polymeric material temporarily, which results in the polymer exhibiting different mechanical properties, while the gas remains dissolved in the polymer. In this study, the mechanical prop

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Kari, Nuerguli, Marco Zannotti, Gulgina Mamtmin, et al. "Substituent Effect on Porphyrin Film-Gas Interaction by Optical Waveguide: Spectrum Analysis and Molecular Dynamic Simulation." Materials 13, no. 24 (2020): 5613. http://dx.doi.org/10.3390/ma13245613.

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Substituent effect on optical gas sensing performance in porphyrin-based optical waveguide detection system was studied by molecular dynamics simulation (MDS), absorption/emission spectrum analysis, and optical waveguide (OWG) detection. The affinities of porphyrin with seven types of substituents (–H, –OH, –tBu, –COOH, –NH2, –OCH3, –SO3−) on para position of meso-phenyl porphyrin toward gas molecules in adsorption process were studied in different size of boxes with the same pressure and concentration. Analyte gases (CO2, H2S, HCl, NO2) were exposed to porphyrin film in absorption spectrophot

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Akiba, Hiroshi, Naoki Hashimoto, Maiko Kofu, Hirokazu Kobayashi, Hiroshi Kitagawa, and Osamu Yamamuro. "Development of adiabatic calorimetry system for enthalpy of gas absorption/adsorption and its application to H2/D2 absorption into palladium nanoparticles." Thermochimica Acta 670 (December 2018): 87–91. http://dx.doi.org/10.1016/j.tca.2018.10.013.

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Cao, Yin Xia, Ji Hui Fang, Jiang Wu, et al. "Experimental Study on Influence of Fly Ash on Mercury Removal in Flue Gas with UV Light." Advanced Materials Research 864-867 (December 2013): 1546–51. http://dx.doi.org/10.4028/www.scientific.net/amr.864-867.1546.

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The original fly ash samples fetched from the power plant and the treated fly ash samples after screening, magnetic separation and mixing were used in the experiment of photocatalytic removal on mercury in flue gas. The fly ash samples and the absorption solution after experiment were tested for mercury content. The results showed that different sizes of the original fly ash had different characteristics of photocatalytic removal of mercury. The adsorption of mercury by fly ash was an important condition for the occurrence of photocatalytic effect. When the mercury adsorption capacity of fly a

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Xue, Juan Qin, Yu Jie Wang, Kong Fen Wang, and Zhou Zhou. "Property and Influence of Membrane on the Absorption Efficiency of Sulfur Dioxide from Flue Gas." Materials Science Forum 610-613 (January 2009): 114–19. http://dx.doi.org/10.4028/www.scientific.net/msf.610-613.114.

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The method of wettability of solid-liquid interface is used to examine the differences of the liquid membranes formed by hydrophilic or hydrophobic membranes with different size and different materials, the influence of the characteristics of membrane modules in the process of desulfurization is studied. The method of accelerating the renewing rate of liquid membrane is proposed. The results show that the hydrophobic liquid membrane leads to higher renewing rate and absorption efficiency of sulfur dioxide and the hollow fiber membrane of polypropylene has higher adsorption efficiency. The dyna

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Mivechian, Ali, and Majid Pakizeh. "Hydrogen recovery from Tehran refinery off-gas using pressure swing adsorption, gas absorption and membrane separation technologies: Simulation and economic evaluation." Korean Journal of Chemical Engineering 30, no. 4 (2013): 937–48. http://dx.doi.org/10.1007/s11814-012-0221-y.

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Kleperis, J., P. Lesnicenoks, L. Grinberga, G. Chikvaidze, and J. Klavins. "Zeolite as Material for Hydrogen Storage in Transport Applications / CEOLĪTA KĀ ŪDEŅRAŽA UZGLABĀŠANAS VIDES IZPĒTE." Latvian Journal of Physics and Technical Sciences 50, no. 3 (2013): 59–64. http://dx.doi.org/10.2478/lpts-2013-0020.

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For transport needs the hydrogen is mostly stored in a compressed (at 350-700 bars) form, while methods for its storage at lower pressures are rapidly developing. In particular, nanoporous oxides and zeolites, which do not normally absorb notable amount of hydrogen, with a small Pd additive or ion exchange demonstrate enhanced hydrogen adsorption properties. An original thermogravimetric method has been developed to study the hydrogen adsorption in zeolite, consisting of its heating in the inert gas (argon, nitrogen) flow and cooling in the hydrogen atmosphere. It is found that natural zeolite

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