Log in

Relevant bibliographies by topics / Adsorption Separation / Journal articles

To see the other types of publications on this topic, follow the link: Adsorption Separation.

Journal articles on the topic 'Adsorption Separation'

Author: Grafiati

Published: 4 June 2021

Last updated: 12 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Adsorption Separation.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Banaszkiewicz, Tomasz. "The Possible Coupling of LNG Regasification Process with the TSA Method of Oxygen Separation from Atmospheric Air." Entropy 23, no. 3 (March 15, 2021): 350. http://dx.doi.org/10.3390/e23030350.

Full text

Abstract:

Liquefied Natural Gas (LNG) must be vaporized before it is used in the combustion process. In most regasification terminals, energy that was previously expended to liquefy natural gas is dissipated in the environment. The paper proposes the use of the thermal effect of LNG regasification for the atmospheric air separation as a possible solution to the LNG exergy recovery problem. The presented idea is based on the coupling of the LNG regasification unit with an oxygen generator based on the Temperature Swing Adsorption (TSA) process. Theoretical analysis has revealed that it is thermodynamically justified to use the LNG enthalpy of vaporization for cooling of the TSA adsorption bed for increasing its adsorptive capacity. It has been shown that 1 kg of LNG carries enough exergy for separating up to approximately 100 g of oxygen using the TSA method. Although the paper suggests using the enthalpy of LNG vaporization for atmospheric air separation, similar processes for other gas mixture separations using the TSA method can be applied.

APA, Harvard, Vancouver, ISO, and other styles

2

Xue, Cai Long, Wen Ping Cheng, Wen Ming Hao, Jing Hong Ma, and Rui Feng Li. "CH4/N2 Adsorptive Separation on Zeolite X/AC Composites." Journal of Chemistry 2019 (January 2, 2019): 1–9. http://dx.doi.org/10.1155/2019/2078360.

Full text

Abstract:

A series of zeolite X/activated carbon (AC) composites were prepared from the same starting materials at various activation time. The corresponding modified samples were obtained by being treated with diluted NH4Cl solution. The relationship between porosity development, surface properties, and CH4/N2 adsorption performance was investigated. The increase of micropore volume is beneficial to the improvement of CH4 and N2 adsorption capacity, but more sensitive for CH4. In addition, the polar functional groups of zeolite X/AC composites may enhance CH4 adsorption capacity. More importantly, both developing micropore structure and surface modification contributed to enhance the adsorption selectivity αCH4/N2. As the optimum sample of these studies, HZAC(24) showed CH4 adsorption capacity of 17.3 cm3/g and the highest adsorption selectivity αCH4/N2 of 3.4. The CH4 and N2 adsorption isotherms of all samples can be well fitted by the Langmuir–Freundlich model. HZAC(24) showed an excellent cyclability of adsorption/desorption of CH4 with a neglectable capacity loss after subsequent cycles. Moreover, HZAC(24) displayed relatively rapid adsorption kinetics. These properties of zeolite X/AC composites are essential for the adsorptive separation of CH4 from N2 in the pressure swing adsorption (PSA) process.

APA, Harvard, Vancouver, ISO, and other styles

3

DeWitt, Stephen J. A., Anshuman Sinha, Jayashree Kalyanaraman, Fengyi Zhang, Matthew J. Realff, and Ryan P. Lively. "Critical Comparison of Structured Contactors for Adsorption-Based Gas Separations." Annual Review of Chemical and Biomolecular Engineering 9, no. 1 (June 7, 2018): 129–52. http://dx.doi.org/10.1146/annurev-chembioeng-060817-084120.

Full text

Abstract:

Recent advances in adsorptive gas separations have focused on the development of porous materials with high operating capacity and selectivity, useful parameters that provide early guidance during the development of new materials. Although this material-focused work is necessary to advance the state of the art in adsorption science and engineering, a substantial problem remains: how to integrate these materials into a fixed bed to efficiently utilize the separation. Structured sorbent contactors can help manage kinetic and engineering factors associated with the separation, including pressure drop, sorption enthalpy effects, and external heat integration (for temperature swing adsorption, or TSA). In this review, we discuss monoliths and fiber sorbents as the two main classes of structured sorbent contactors; recent developments in their manufacture; advantages and disadvantages of each structure relative to each other and to pellet packed beds; recent developments in system modeling; and finally, critical needs in this area of research.

APA, Harvard, Vancouver, ISO, and other styles

4

Kour, Jagjit, Puspa Lal Homagai, Megh Raj Pokhrel, and Kedar Nath Ghimire. "Adsorptive Separation of Metal Ions with Surface Modified Desmostachya bipinnata." Nepal Journal of Science and Technology 13, no. 1 (January 21, 2013): 101–6. http://dx.doi.org/10.3126/njst.v13i1.7448.

Full text

Abstract:

The biomass of Desmostachy bipannata (Kush, a religious plant of Hindus) was modified for the better adsorption of metal ions from aqueous solution. The FTIR and SEM images were used for the characterization of biomass. The adsorptive separation of metal ions from aqueous solution was studied with equilibrium isotherm and kinetic model. Langmuir adsorption isotherm and pseudo second order kinetic model showed better explanation for the adsorption process. The experimental results suggest that biomass from Kush can be used as an effective biosorbent for the removal of metal ions from aqueous solution. Nepal Journal of Science and Technology Vol. 13, No. 1 (2012) 101-106 DOI: http://dx.doi.org/10.3126/njst.v13i1.7448

APA, Harvard, Vancouver, ISO, and other styles

5

Akulinin, E. I., A. A. Ishin, S. A. Skvortsov, D. S. Dvoretsky, and S. I. Dvoretsky. "Optimization of Adsorption Processes with Cyclic Variable Pressure in Gas Mixture Separation." Advanced Materials & Technologies, no. 3 (2017): 051–60. http://dx.doi.org/10.17277/amt.2017.03.pp.051-060.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Helfferich, Friedrich G. "Gas separation by adsorption processes." Reactive Polymers, Ion Exchangers, Sorbents 9, no. 3 (December 1988): 301–2. http://dx.doi.org/10.1016/0167-6989(88)90256-5.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Yang, RalphT. "Gas Separation by Adsorption Processes." Chemical Engineering Science 43, no. 4 (1988): 985. http://dx.doi.org/10.1016/0009-2509(88)80096-4.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Kirkby, N. "Gas Separation by Adsorption Processes." Gas Separation & Purification 2, no. 1 (March 1988): 41. http://dx.doi.org/10.1016/0950-4214(88)80042-2.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Rees, LovatV C. "Gas Separation International — Adsorption Sessions." Gas Separation & Purification 5, no. 4 (December 1991): 273. http://dx.doi.org/10.1016/0950-4214(91)80037-6.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Rege, Salil U., Joel Padin, and Ralph T. Yang. "Olefin/paraffin separations by adsorption: π-Complexation vs. kinetic separation." AIChE Journal 44, no. 4 (April 1998): 799–809. http://dx.doi.org/10.1002/aic.690440405.

Full text

APA, Harvard, Vancouver, ISO, and other styles

11

Jakuš, Vladimír. "Evaluation of adsorption and retention models for separation of polychlorinated biphenyls by HPLC on reversed phases." Collection of Czechoslovak Chemical Communications 56, no. 12 (1991): 2849–58. http://dx.doi.org/10.1135/cccc19912849.

Full text

Abstract:

Adsorption model for separation of polychlorinated biphenyls (PCB) in HPLC on reversed phases (chemically bonded C18) was applied to a series of 15 PCB. The values for adsorption interaction energy were computed employing the method of empirical potential functions according to Dashevskii. The model of interphase partitioning and the partition model of separation are also presented with respect to the optimized geometry of the PCB molecule with an optimal torsion angle. The Gibbs solvation energies in the stationary (octanol) and mobile (water) phases for 15 PCB were computed by means of continuum models. The energy values were correlated with capacity factors and partition coefficients. Correlation analysis indicated the dominant role in PCB separations to be partition processes of the solute in mobile phase; adsorption on these surfaces does not influence considerably the separation process.

APA, Harvard, Vancouver, ISO, and other styles

12

Ding, Qi, Zhaoqiang Zhang, Cong Yu, Peixin Zhang, Jun Wang, Xili Cui, Chao-Hong He, Shuguang Deng, and Huabin Xing. "Exploiting equilibrium-kinetic synergetic effect for separation of ethylene and ethane in a microporous metal-organic framework." Science Advances 6, no. 15 (April 2020): eaaz4322. http://dx.doi.org/10.1126/sciadv.aaz4322.

Full text

Abstract:

Physisorption is a promising technology to cut cost for separating ethylene (C2H4) from ethane (C2H6), the most energy-intensive separation process in the petrochemical industry. However, traditional thermodynamically selective adsorbents exhibit limited C2H4/C2H6 selectivity due to their similar physiochemical properties, and the performance enhancement is typically at the expense of elevated adsorption heat. Here, we report highly-efficient C2H4/C2H6 adsorption separation in a phosphate-anion pillared metal-organic framework ZnAtzPO4 exploiting the equilibrium-kinetic synergetic effect. The periodically expanded and contracted aperture decorated with electronegative groups within ZnAtzPO4 enables effective trapping of C2H4 and impedes the diffusion of C2H6, offering an extraordinary equilibrium-kinetic combined selectivity of 32.4. The adsorption heat of C2H4 on ZnAtzPO4 (17.3 to 30.0 kJ mol−1) is substantially lower than many thermodynamically selective adsorbents because its separation capability only partially relies on thermodynamics. The separation mechanism was explored by computational simulations, and breakthrough experiments confirmed the excellent C2H4/C2H6 separation performance of ZnAtzPO4.

APA, Harvard, Vancouver, ISO, and other styles

13

Yang, Lilong, Xiang Zhou, Kewei Zhang, Fanhua Zeng, and Zhouhua Wang. "Investigation of dynamical properties of methane in slit-like quartz pores using molecular simulation." RSC Advances 8, no. 59 (2018): 33798–816. http://dx.doi.org/10.1039/c8ra06678g.

Full text

APA, Harvard, Vancouver, ISO, and other styles

14

Luna-Triguero, A., P. Gómez-Álvarez, and S. Calero. "Adsorptive process design for the separation of hexane isomers using zeolites." Physical Chemistry Chemical Physics 19, no. 7 (2017): 5037–42. http://dx.doi.org/10.1039/c6cp08025a.

Full text

APA, Harvard, Vancouver, ISO, and other styles

15

Sircar, S. "Applications of Gas Separation by Adsorption for the Future." Adsorption Science & Technology 19, no. 5 (June 2001): 347–66. http://dx.doi.org/10.1260/0263617011494222.

Full text

Abstract:

The separation and purification of gas mixtures by adsorption has found numerous industrial applications during the past 30 years. The very active research and development in this field is driven by (a) the highly flexible nature of cyclic adsorptive process designs, (b) the availability of many adsorbents for the separation and (c) the multiple choice of adsorbent–process design combinations for achieving the desired separation goals. The trend is to improve the product quality and separation efficiency, as well as to increase the scale of application of this technology. The design of processes using faster cycles and the use of innovative adsorber configurations are two new directions. Hybrid gas separation and production concepts such as adsorbent membranes and simultaneous sorption–reaction schemes are emerging areas that may open new frontiers of application for this technology.

APA, Harvard, Vancouver, ISO, and other styles

16

Rao, M. B., and S. Sircar. "Liquid-phase Adsorption of Bulk Ethanol–Water Mixtures by Alumina." Adsorption Science & Technology 10, no. 1-4 (March 1993): 93–104. http://dx.doi.org/10.1177/0263617499010001-409.

Full text

Abstract:

Separation of ethanol–water liquid mixtures can be carried out by selective adsorption of water on activated alumina. The moderate selectivity and heat of adsorption of water on the alumina permits easier and less energy intensive desorption of the adsorbed water. Experimental binary surface excess isotherms, liquid-phase adsorption kinetics and column dynamics for the adsorption of bulk water–ethanol mixtures on Alcoa H152 alumina are reported. Model analyses of the data are carried out to quantify the selectivity of adsorption, adsorptive mass-transfer coefficients and the properties of the mass-transfer zones in adsorption columns.

APA, Harvard, Vancouver, ISO, and other styles

17

Rambabu, K., L. Muruganandam, and S. Velu. "CFD Simulation for Separation of Carbon Dioxide-Methane Mixture by Pressure Swing Adsorption." International Journal of Chemical Engineering 2014 (2014): 1–7. http://dx.doi.org/10.1155/2014/402756.

Full text

Abstract:

A developing technology for gas separations is pressure swing adsorption, which has been proven to be more economical and energy efficient compared to other separation methods like cryogenic distillation and membrane separation. A pressure swing adsorption (PSA) column, with carbon dioxide-methane as feed mixture and 6-FDA based polyimides as the adsorbent, was modeled and simulated in this work. Ansys Fluent 12.1, along with supplementary user defined functions, was used to develop a 2D transient Eulerian laminar viscous flow model for the PSA column. The model was validated by comparing the simulated results with established analytical models for PSA. The developed numerical model was used to determine the carbon dioxide concentration in the column as a function of time based on different operating conditions. Effect of various operating parameters like pressure, temperature, and flow rate on the separation efficiency has been studied and reported. Optimization studies were carried out to obtain suitable operating conditions for the feed gases separation. Simulation studies were carried out to determine the separation length required for complete separation of the feed mixture corresponding to different inlet feed concentrations which were entering the column at a given flow rate.

APA, Harvard, Vancouver, ISO, and other styles

18

Lively, Ryan P., and Matthew J. Realff. "On thermodynamic separation efficiency: Adsorption processes." AIChE Journal 62, no. 10 (April 22, 2016): 3699–705. http://dx.doi.org/10.1002/aic.15269.

Full text

APA, Harvard, Vancouver, ISO, and other styles

19

Chen, Kaikai, Changfa Xiao, Hailiang Liu, and Jian Zhao. "Graphene Adsorption and Separation Functional Materials." Chemical Engineering & Technology 42, no. 2 (January 14, 2019): 266–86. http://dx.doi.org/10.1002/ceat.201800358.

Full text

APA, Harvard, Vancouver, ISO, and other styles

20

Ruthven, D. M., and S. Farooq. "Air separation by pressure swing adsorption." Gas Separation & Purification 4, no. 3 (September 1990): 141–48. http://dx.doi.org/10.1016/0950-4214(90)80016-e.

Full text

APA, Harvard, Vancouver, ISO, and other styles

21

Ribeiro, M. H. L., D. M. F. Prazeres, J. M. S. Cabral, and M. M. R. da Fonseca,. "Adsorption studies for the separation of." Bioprocess Engineering 12, no. 1 (1995): 95. http://dx.doi.org/10.1007/s004490050089.

Full text

APA, Harvard, Vancouver, ISO, and other styles

22

Sun, Tao. "Research progress of modified macroporous adsorption resin in adsorption separation." IOP Conference Series: Materials Science and Engineering 729 (February 10, 2020): 012014. http://dx.doi.org/10.1088/1757-899x/729/1/012014.

Full text

APA, Harvard, Vancouver, ISO, and other styles

23

Becerra-Pérez, Oslery, Stavros Georgopoulos, Maria Lanara, Hilda Elizabeth Reynel-Ávila, Maria Papadaki, Adrián Bonilla-Petriciolet, and Didilia Ileana Mendoza-Castillo. "Energy-Saving and Sustainable Separation of Bioalcohols by Adsorption on Bone Char." Adsorption Science & Technology 2021 (January 14, 2021): 1–16. http://dx.doi.org/10.1155/2021/6615766.

Full text

Abstract:

The separation of ethanol, propanol, and butanol from aqueous solutions was studied using adsorption on bone char. Adsorption kinetics and thermodynamic parameters of this separation method were studied at different conditions of pH and temperature. Results showed that the maximum adsorption capacities of these bioalcohols were obtained at pH 6 and 20°C. An exothermic separation was identified, which can be mainly associated to hydrophobic interactions between bone char surface and bioalcohols. Binary adsorption studies were also performed using mixtures of these bioalcohols. An antagonistic adsorption was observed for all bioalcohols where the ethanol and propanol separation was significantly affected by butanol. A model based on an artificial neural network was proposed to correlate both single and binary adsorption isotherms of these bioalcohols with bone char. It was concluded that the bone char could be an interesting adsorbent for the sustainable separation and recovery of bioalcohols from fermentation broths, which are actually considered emerging liquid biofuels and relevant industrial chemicals.

APA, Harvard, Vancouver, ISO, and other styles

24

Lu, Li, Ya Ning Wang, Rong Yu, Deng Xuan, Chun Hua Xing, Xiao Hong Li, Chang Jian Gao, and Huai San Wang. "Synthesis of a Neotype Molecule Absorption Resin and Study on its Separation of Pigment from Fermentation Liquid." Advanced Materials Research 287-290 (July 2011): 2036–41. http://dx.doi.org/10.4028/www.scientific.net/amr.287-290.2036.

Full text

Abstract:

The result of its static adsorption to Fermentation Liquid shows that the new reshaping resin. LX-18G-1 does so well in absorbing the Erythromycin and separating Pigment, its adsorption quantity reach 184ku/mL and the separation for pigmentosus just only 7.8%, comparing with 100ku/ml and 36.5% of the Amberlite XAD-16 resin made by US. Rohm & has Company.

APA, Harvard, Vancouver, ISO, and other styles

25

Ma, Dong Zhu, Hong He, Jian Li, Li Yun Song, Lian Jie Guo, Hong Ming Wang, and Wei He. "Experimental Study of Separating CH₄/N₂ by Using Coconut Shell Activated Carbon of High Temperature Roasting." Materials Science Forum 743-744 (January 2013): 713–19. http://dx.doi.org/10.4028/www.scientific.net/msf.743-744.713.

Full text

Abstract:

The effects on CH4 and N2 separation performance of coconut shell charcoal by high temperature roasting were studied. Results indicate that the surface area increased firstly and then decreased with the increasing of the roasting temperature, and it is found that surface area of roasting 4 hours is higher. Furthermore, the experiment focused on the effect of high temperature roasting on activated carbon adsorption volume and separation coefficient. It is obvious that the adsorption volume increases earlier and then decreases with the increasing roasting temperature, and there are obvious turning points to adsorption volume of CH4 and N2. Comparing various roasting time, it is found that adsorption volume in 4h is greater than that in 1h and also in 6h in the whole process. Separation coefficient decreases with increasing roasting temperature. When the temperature is higher than 800 , separation coefficient decreased rapidly. Considering the adsorption volume and separation coefficient, roasting 4 hours at 600 is selected for industrialized production.

APA, Harvard, Vancouver, ISO, and other styles

26

Son, Changgil, Wonyeol An, Geonhee Lee, Inho Jeong, Yong-Gu Lee, and Kangmin Chon. "Adsorption Characteristics of Phosphate Ions by Pristine, CaCl2 and FeCl3-Activated Biochars Originated from Tangerine Peels." Separations 8, no. 3 (March 13, 2021): 32. http://dx.doi.org/10.3390/separations8030032.

Full text

Abstract:

This study has evaluated the removal efficiencies of phosphate ions (PO43−) using pristine (TB) and chemical-activated tangerine peel biochars. The adsorption kinetics and isotherm presented that the enhanced physicochemical properties of TB surface through the chemical activation with CaCl2 (CTB) and FeCl3 (FTB) were helpful in the adsorption capacities of PO43− (equilibrium adsorption capacity: FTB (1.655 mg g−1) > CTB (0.354 mg g−1) > TB (0.104 mg g−1)). The adsorption kinetics results revealed that PO43− removal by TB, CTB, and FTB was well fitted with the pseudo-second-order model (R2 = 0.999) than the pseudo-first-order model (R2 ≥ 0.929). The adsorption isotherm models showed that the Freundlich equation was suitable for PO43− removal by TB (R2 = 0.975) and CTB (R2 = 0.955). In contrast, the Langmuir equation was proper for PO43− removal by FTB (R2 = 0.987). The PO43− removal efficiency of CTB and FTB decreased with the ionic strength increased due to the compression of the electrical double layer on the CTB and FTB surfaces. Besides, the PO43− adsorptions by TB, CTB, and FTB were spontaneous endothermic reactions. These findings demonstrated FTB was the most promising method for removing PO43− in waters.

APA, Harvard, Vancouver, ISO, and other styles

27

Chen, Ichen, Chenxi Xu, Jing Peng, Dong Han, Siqi Liu, and Maolin Zhai. "Novel Functionalized Cellulose Microspheres for Efficient Separation of Lithium Ion and Its Isotopes: Synthesis and Adsorption Performance." Molecules 24, no. 15 (July 30, 2019): 2762. http://dx.doi.org/10.3390/molecules24152762.

Full text

Abstract:

The adsorption of lithium ions(Li+) and the separation of lithium isotopes have attracted interests due to their important role in energy storage and nuclear energy, respectively. However, it is still challenging to separate the Li+ and its isotopes with high efficiency and selectivity. A novel cellulose-based microsphere containing crown ethers groups (named as MCM-g-AB15C5) was successfully synthesized by pre-irradiation-induced emulsion grafting of glycidyl methacrylate (GMA) and followed by the chemical reaction between the epoxy group of grafted polymer and 4′-aminobenzo-15-crown-5 (AB15C5). By using MCM-g-AB15C5 as adsorbent, the effects of solvent, metal ions, and adsorption temperature on the adsorption uptake of Li+ and separation factor of 6Li/7Li were investigated in detail. Solvent with low polarity, high adsorption temperature in acetonitrile could improve the uptake of Li+ and separation factor of lithium isotopes. The MCM-g-AB15C5 exhibited the strongest adsorption affinity to Li+ with a separation factor of 1.022 ± 0.002 for 6Li/7Li in acetonitrile. The adsorption isotherms in acetonitrile is fitted well with the Langmuir model with an ultrahigh adsorption capacity up to 12.9 mg·g−1, indicating the unexpected complexation ratio of 1:2 between MCM-g-AB15C5 and Li+. The thermodynamics study confirmed the adsorption process is the endothermic, spontaneous, and chemisorption adsorption. As-prepared novel cellulose-based adsorbents are promising materials for the efficient and selective separation of Li+ and its isotopes.

APA, Harvard, Vancouver, ISO, and other styles

28

Yih, S. M., and H. C. Hsiao. "The Effect of Contaminant on Xylene Separation by Zeolite Adsorption." Adsorption Science & Technology 5, no. 2 (June 1988): 116–26. http://dx.doi.org/10.1177/026361748800500203.

Full text

Abstract:

Possible contaminants arising from the oxidation of xylene isomers are detrimental to industrial adsorptive xylene separation processes since they lower the selectivity and recovery of p-xylene. A model compound, acetophenone, has been used to simulate the contaminant and it has been shown via pulse tests to adsorb strongly on to a K-BaY zeolite, thereby lowering the selectivity of p-xylene. Although the liquid desorbent PDEB (p-diethylbenzene) was not effective in removing the adsorbed acetophenone, nitrogen at 400°C and 1 atm was effective both in removing the adsorbed acetophenone and regenerating the adsorbent. Measurements of the adsorption capacity of acetophenone have shown that Molecular Sieve 13 X and K-BaY zeolites are both good adsorbents for acetophenone.

APA, Harvard, Vancouver, ISO, and other styles

29

Adisasmito, Sanggono, Carolus Borromeus Rasrendra, M. Qori Alfadhli, and M. Fauzan Al Ghifary. "Hydrogen Sulfide Separation from Biogas Using Laterite Soil Adsorbent." Materials Science Forum 988 (April 2020): 144–50. http://dx.doi.org/10.4028/www.scientific.net/msf.988.144.

Full text

Abstract:

Biogas production contributes as an alternative renewable energy but its emissions contain sulphuric components which needs to be separated because it can cause damage to the environment. The method used in separation is adsorption with laterite soil because the price is cheap, easy to obtain, and can occur at room temperature. The purpose of this study is to determine the conditions of the adsorbent in the adsorption column which can provide a high adsorption capacity. The separation process is carried out by flowing biogas with a flow rate of 1.5 liters/minute to the adsorption column containing laterite soil. Reducing the particle size of the adsorbent from 6 mesh to 21 mesh will increase the adsorption capacity to 2.13 times, ie from 7.3 to 14.2 mg H2S/g adsorbent. The addition of bed height from 7 cm to 12 cm will increase the adsorption capacity from 6.7 to 7.9 mg H2S/g adsorbent at 6 mesh particle size. The addition of bed height from 7 cm to 12 cm will increase the adsorption capacity from 13.5 to 15.0 mg H2S/g adsorbent at 21 mesh particle size. The laterite soil adsorbent with a particle size of 21 mesh has the highest adsorption capacity of 15.0 mg H2S/g adsorbent.

APA, Harvard, Vancouver, ISO, and other styles

30

Ori, Guido, Carlo Massobrio, Annie Pradel, Michel Ribes, and Benoit Coasne. "Nanoporous chalcogenides for adsorption and gas separation." Physical Chemistry Chemical Physics 18, no. 19 (2016): 13449–58. http://dx.doi.org/10.1039/c6cp00467a.

Full text

APA, Harvard, Vancouver, ISO, and other styles

31

Ismail, Marhaina, Mohamad Azmi Bustam, and Yin Fong Yeong. "Gallate-Based Metal–Organic Frameworks, a New Family of Hybrid Materials and Their Applications: A Review." Crystals 10, no. 11 (November 5, 2020): 1006. http://dx.doi.org/10.3390/cryst10111006.

Full text

Abstract:

Within three decades of fundamental findings in research on metal–organic frameworks (MOFs), a new family of hybrid materials known as gallate-based MOFs, consisting of metal salt and gallic acid, have been of great interest. Due to the fact that gallic acid is acknowledged to display a range of bioactivities, gallate-based MOFs have been initially expended in biomedical applications. Recently, gallate-based MOFs have been gradually acting as new alternative materials in chemical industrial applications, in which they were first reported for the adsorptive separation of light hydrocarbon separations. However, to date, none of them have been related to CO2/CH4 separation. These porous materials have a bright future and can be kept in development for variety of applications in order to be applied in real industrial practices. Therefore, this circumstance creates a new opportunity to concentrate more on studies in CO2/CH4 applications by using porous material gallate-based MOFs. This review includes the description of recent gallate-based MOFs that presented remarkable properties in biomedical areas and gas adsorption and separation, as well as their future potential application.

APA, Harvard, Vancouver, ISO, and other styles

32

Fuertes, Antonio B. "Adsorption-selective carbon membrane for gas separation." Journal of Membrane Science 177, no. 1-2 (August 2000): 9–16. http://dx.doi.org/10.1016/s0376-7388(00)00458-0.

Full text

APA, Harvard, Vancouver, ISO, and other styles

33

Feng, Xianshe, Chuen Y. Pan, John Ivory, and Dave Ghosh. "Integrated membrane/adsorption process for gas separation." Chemical Engineering Science 53, no. 9 (May 1998): 1689–98. http://dx.doi.org/10.1016/s0009-2509(97)00440-5.

Full text

APA, Harvard, Vancouver, ISO, and other styles

34

Cen, Peiling, and Ralph T. Yang. "Bulk gas separation by pressure swing adsorption." Industrial & Engineering Chemistry Fundamentals 25, no. 4 (November 1986): 758–67. http://dx.doi.org/10.1021/i100024a047.

Full text

APA, Harvard, Vancouver, ISO, and other styles

35

Fukada, Satoshi. "Tritium Isotope Separation Using Adsorption-Distillation Column." Fusion Science and Technology 48, no. 1 (August 2005): 140–43. http://dx.doi.org/10.13182/fst05-a898.

Full text

APA, Harvard, Vancouver, ISO, and other styles

36

Meijers, B. K. I., M. F. Hoylaerts, and P. Evenepoel. "Coagulation and Fractionated Plasma Separation and Adsorption." American Journal of Transplantation 9, no. 1 (December 19, 2008): 242–43. http://dx.doi.org/10.1111/j.1600-6143.2008.02485.x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

37

Sato, Hisaya, Kenji Ogino, Tri Darwint, and Iwao Kiyokawa. "Separation of copolymers by adsorption liquid chromatography." Macromolecular Symposia 110, no. 1 (June 1996): 177–89. http://dx.doi.org/10.1002/masy.19961100113.

Full text

APA, Harvard, Vancouver, ISO, and other styles

38

Chizhkov, V. P., and V. N. Boitsov. "General Theory of Separation and Adsorption Chromatography." Russian Journal of Physical Chemistry A 93, no. 2 (February 2019): 349–52. http://dx.doi.org/10.1134/s0036024419020079.

Full text

APA, Harvard, Vancouver, ISO, and other styles

39

Hart, J., and W. J. Thomas. "Gas separation by pulsed pressure swing adsorption." Gas Separation & Purification 5, no. 2 (June 1991): 125–33. http://dx.doi.org/10.1016/0950-4214(91)80009-t.

Full text

APA, Harvard, Vancouver, ISO, and other styles

40

Rakshit, S. K., P. Ghosh, and V. S. Bisaria. "Ethanol separation by selective adsorption of water." Bioprocess Engineering 8, no. 5-6 (January 1993): 279–82. http://dx.doi.org/10.1007/bf00369841.

Full text

APA, Harvard, Vancouver, ISO, and other styles

41

Defu, Li, and Wang Jinqu. "The Adsorption and Separation of Ethylene, Oxygen and Carbon Dioxide Gases on Molecular Sieves." Adsorption Science & Technology 20, no. 1 (February 2002): 83–90. http://dx.doi.org/10.1260/026361702760120944.

Full text

Abstract:

The equilibrium adsorption and diffusion properties of ethylene, oxygen and carbon dioxide gases on two kinds of molecular sieve at 25°C were measured by gravimetric methods using a Cahn-2000 electrobalance. On both molecular sieves, the equilibrium adsorption capacity of ethylene was larger than that of oxygen and close to that of carbon dioxide, indicating that it would not be possible to remove oxygen and carbon dioxide gases from their mixture with ethylene in order to effect recovery of the latter via equilibrium separation methods. However, during the early stages of adsorption, the adsorption rates of carbon dioxide and oxygen were faster than that of ethylene thereby suggesting recovery of the latter from the gaseous mixture via kinetic separation based on the difference in adsorption diffusivity. Such separation was conducted using a two-bed column pressure swing adsorption arrangement with the effects of the experimental conditions on the separation being investigated. Oxygen and carbon dioxide may be adsorbed and removed from the gaseous mixture, leaving the output gases rich in ethylene.

APA, Harvard, Vancouver, ISO, and other styles

42

Zhang, Fucan, Ping Liu, Kan Zhang, and Qing-Wen Song. "Chemical Adsorption Strategy for DMC-MeOH Mixture Separation." Molecules 26, no. 6 (March 19, 2021): 1735. http://dx.doi.org/10.3390/molecules26061735.

Full text

Abstract:

The effective separation of dimethyl carbonate (DMC) from its methanol mixture through simple, inexpensive and low energy-input method is a promising and challenging field in the process of organic synthesis. Herein, a reversible adsorption strategy through the assistance of superbase and CO2 for DMC/methanol separation at ambient condition was described. The process was demonstrated effectively via the excellent CO2 adsorption efficiency. Notably, the protocol was also suitable to other alcohol (i.e., monohydric alcohol, dihydric alcohol, trihydric alcohol) mixtures. The study provided guidance for potential separation of DMC/alcohol mixture in the scale-up production.

APA, Harvard, Vancouver, ISO, and other styles

43

Tong, Yansi, Jiacheng Xing, Caiyi Lou, Danhua Yuan, Wei Huang, Zhaoan Chen, Zhongmin Liu, and Yunpeng Xu. "Efficient separation of propylene and propane on SAPO-17 molecular sieve." Canadian Journal of Chemistry 99, no. 7 (July 2021): 570–75. http://dx.doi.org/10.1139/cjc-2020-0489.

Full text

Abstract:

In this study, the separation performance of propylene and propane on SAPO-17 molecular sieve was investigated by static and dynamic adsorption. The adsorbent possessed good regeneration behavior because the strong adsorption of propylene at room temperature was eliminated by ion exchange treatment. Dynamic adsorption experiments revealed that the kinetic separation selectivity of propylene and propane was as high as 1980, which could be attributed to the energy barrier difference when diffusing through the eight-membered ring of SAPO-17 molecular sieve. The breakthrough experiments verified the good separation performance of the SAPO-17 adsorbent, which suggests that it has considerable application potential in propylene/propane separation.

APA, Harvard, Vancouver, ISO, and other styles

44

Zhao, Yingyu, Zhenbin Chen, Jie Li, Zhen Liu, Donglei Liu, and Zhizong Li. "Preparative separation and purification of flavonoids from Lamiophlomis rotata (Benth.) Kudo." Pigment & Resin Technology 46, no. 6 (November 6, 2017): 496–506. http://dx.doi.org/10.1108/prt-12-2016-0119.

Full text

Abstract:

Purpose The purpose of the paper is to separate and purify flavonoids existed in Lamiophlomis rotata (Benth.) Kudo. by macroporous adsorption resin (MAR) mixed-bed technology. Design/methodology/approach The adsorption and desorption parameters were characterized by UV-VIS spectrophotometry. The optimal MAR mixed bed was screened based on the adsorption experiments; the experiment process was investigated by the order of single, two and three MAR mixed bed separately; and the adsorption performance, which was composed by the authority of 80 per cent adsorption ratios and 20 per cent desorption ratios, was adopted to screen MAR mixed bed for flavonoids. The adsorption dynamic investigated the order of reaction first, and then the adsorption mechanism was researched further. The adsorption thermodynamic investigated the adsorption isotherm first, and then the adsorption feature was analyzed. Findings This research found that MAR mixed bed of LS-840 + LSD301 with mass ratio of mLS840:mLSD301 = 3:2 was the optimized combination, and the optimal conditions of the adsorption were volume V = 50 mL, time t = 6.5 h, T = 40°C. The desorption conditions were ethanol content = 70 per cent, desorption time t = 3.0 h, T = 40°C. The adsorption dynamic experimental data fitted better to the pseudo-second-order, and the intra-particle-diffusion model was more suitable for expression of the adsorption mechanism in mesopores process, whereas the homogeneous particle-diffusion model was more suitable in microspores. The adsorption was a physical and multilayer adsorption, and the adsorption driving force was disappeared as it transferred to the fourth layer. Practical implications Find an efficient way to separate flavonoids that useful for human’s health, which can not only utilize of plant resources effectively, but also make outstanding contributions to medical industry. It has very high economic and social value. Originality/value This contribution provided a new way to separate flavonoids from Lamiophlomis rotata (Benth.) Kudo. Under the optimal conditions, the adsorption rate (F) of MAR mixed bed LS-840 + LSD301 to the flavonoids was 97.81 per cent, the desorption rate (D) was 90.02 per cent and the purity of flavonoids was dramatically increased about 2.08 fold of the crude extract from 28 to 58.4 per cent, and the recovery yield of flavonoids arrived at 91.6 per cent after a circle of adsorption/desorption operation.

APA, Harvard, Vancouver, ISO, and other styles

45

Salazar Duarte, Gabriel, Benedikt Schürer, Christian Voss, and Dieter Bathen. "Adsorptive Separation of CO2 from Flue Gas by Temperature Swing Adsorption Processes." ChemBioEng Reviews 4, no. 5 (June 26, 2017): 277–88. http://dx.doi.org/10.1002/cben.201600029.

Full text

APA, Harvard, Vancouver, ISO, and other styles

46

Prasanna, Rajasekar R., and Mookambeswaran A. Vijayalakshmi. "Immobilized metal-ion affinity systems for recovery and structure–function studies of proteins at molecular, supramolecular, and cellular levels." Pure and Applied Chemistry 82, no. 1 (January 3, 2010): 39–55. http://dx.doi.org/10.1351/pac-con-09-01-18.

Full text

Abstract:

Immobilized metal-ion affinity (IMA) adsorption is a collective term that is used to include all kinds of adsorptions where the metal ion serves as the characteristic and most essential part of adsorption center. Of all the IMA techniques, immobilized metal-affinity chromatography (IMAC) has been gaining popularity as the choice of purification technique for proteins. IMAC represents a separation technique that is primarily useful for proteins with natural surface exposed-histidine residues and for recombinant proteins with engineered histidine tag. This review also gives insight into other nonchromatographic applications of IMA adsorption such as immobilized metal-ion affinity gel electrophoresis (IMAGE), immobilized metal-ion affinity capillary electrophoresis (IMACE), and immobilized metal-ion affinity partitioning (IMAP).

APA, Harvard, Vancouver, ISO, and other styles

47

Xie, Baoshan, Yi Hou, and Youming Li. "Modified lignin nanosphere adsorbent for lead and copper ions." BioResources 16, no. 1 (November 13, 2020): 249–62. http://dx.doi.org/10.15376/biores.16.1.249-262.

Full text

Abstract:

Heavy metal ions in wastewater have negative effects on humans and the environment. In this paper, the adsorption of lead and copper ions by modified eucalyptus lignin nanosphere (ECLNPs) was studied. The spherical alkali-lignin particles had a diameter of 50 nm, abundant carboxyl groups of 0.66 mmol/g, and relatively high adsorption performance. The equilibrium adsorption capacities of Pb(II) and Cu(II) by ECLNPs were 126.0 mg/g and 54.4 mg/g, respectively. Both Pb(II) and Cu(II) adsorptive processes fitted a pseudo-second-order kinetics model. In the simultaneous adsorption process of Pb(II) and Cu(II), ECLNPs had higher adsorptive selectivity for Pb(II) than Cu(II), and there was a competitive adsorption process between Pb(II) and Cu(II). This resulted from the lower hydration heat of Pb(II) in water, which leads to easier separation from water ligands. ECLNPs also showed good recyclability, with 16.6% and 21.1% loss in Pb(II) and Cu(II) adsorption capacity, respectively, after three consecutive adsorption-desorption cycles, which provides a feasible technical direction for the utilization of biomass resources and the treatment of water contamination.

APA, Harvard, Vancouver, ISO, and other styles

48

Alqaheem, Yousef, Abdulaziz Alomair, Mari Vinoba, and Andrés Pérez. "Polymeric Gas-Separation Membranes for Petroleum Refining." International Journal of Polymer Science 2017 (2017): 1–19. http://dx.doi.org/10.1155/2017/4250927.

Full text

Abstract:

Polymeric gas-separation membranes were commercialized 30 years ago. The interest on these systems is increasing because of the simplicity of concept and low-energy consumption. In the refinery, gas separation is needed in many processes such as natural gas treatment, carbon dioxide capture, hydrogen purification, and hydrocarbons separations. In these processes, the membranes have proven to be a potential candidate to replace the current conventional methods of amine scrubbing, pressure swing adsorption, and cryogenic distillation. In this paper, applications of polymeric membranes in the refinery are discussed by reviewing current materials and commercialized units. Economical evaluation of these membranes in comparison to traditional processes is also indicated.

APA, Harvard, Vancouver, ISO, and other styles

49

Burchell, Timothy D., Omats O. Omatete, Nidia C. Gallego, and Frederick S. Baker. "Use of Carbon Fibre Composite Molecular Sieves for Air Separation." Adsorption Science & Technology 23, no. 3 (April 2005): 175–94. http://dx.doi.org/10.1260/0263617054353618.

Full text

Abstract:

The adsorption of oxygen, nitrogen and carbon dioxide onto a carbon fibre composite was investigated using static and dynamic techniques. Molecular-sieving effects in the composite were highlighted by the adsorption of carbon dioxide, a more sensitive probe molecule for the presence of micro-porosity in adsorbents. The kinetic studies revealed that oxygen was more rapidly adsorbed on the composite than nitrogen and with a higher uptake under equilibrium conditions. Preliminary experiments indicated that the carbon fibre composite was capable of separating oxygen and nitrogen from air on the basis of the different diffusion rates of the two molecules in the micropore network of the composite. It is proposed that the relatively high electrical conductivity of the carbon fibre composite material could be exploited for air separation by facilitating the production of O2 and N2 through electrical swing adsorption rather than the depressurization of adsorber beds.

APA, Harvard, Vancouver, ISO, and other styles

50

Zhang, Jinhua, Lanting Li, and Qiang Qin. "Effects of micropore structure of activated carbons on the CH4/N2 adsorption separation and the enrichment of coal-bed methane." Clean Energy 5, no. 2 (June 1, 2021): 329–38. http://dx.doi.org/10.1093/ce/zkab013.

Full text

Abstract:

Abstract In the process of enriching CH4 from coal-bed methane, the separation of CH4/N2 is very difficult to accomplish by an adsorption process due to the similar physico-chemical properties of the two molecules. A series of coconut-shell-based granular activated carbons (GACs) with different pore structures were prepared, which were characterized by different methods. The influence of the pore structure on the separation properties was investigated in detail. The results show that one of the carbons prepared (GAC-3) has high CH4 equilibrium adsorption capacity (3.28 mol·kg–1) at 298 K and equilibrium separation coefficient (3.95). The CH4/N2 separation on the GACs is controlled by adsorption equilibrium as compared with the dynamic effect. Taking the specific surface area, for example, the common characterization index of the pore structure is not enough to judge the separation performance of the GACs. However, the microstructure of carbon materials plays a decisive role for CH4/N2 separation. According to the pore-structure analysis, the effective pore size for the CH4/N2 separation is from 0.4 to 0.9 nm, with the optimum effect occurring in the range of 0.6–0.7 nm, followed by the range of 0.7~0.9 nm. Also, a four-bed vacuum pressure swing adsorption process was adopted to evaluate the performance of GACs for the separation of CH4 from nitrogen.

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!