Study on Adsorption Property of Different Adsorbents for Dibenzothiophenic Sulfur in Simulated Diesel

2013 ◽  
Vol 807-809 ◽  
pp. 2488-2491
Author(s):  
Lei Tang ◽  
Yang Yan Bian ◽  
Qun Cui ◽  
Hai Yan Wang
Keyword(s):  
Adsorption Capacity ◽  
Adsorption Property ◽  
Metal Organic Framework ◽  
Equilibrium Concentration ◽  
Equilibrium Adsorption ◽  
Bet Surface Area ◽  
Initial Concentration ◽  
Adsorption Performance ◽  
Metal Organic ◽  
Equilibrium Adsorption Capacity

It’s more difficult to remove dibenzothiophenic sulfur in diesel. Adsorption performance of self-made metal-organic framework on Cu-BTC, MCM-22, alumina and silica gel for 4-methyldibenzothiophene (4-MDBT) and 4,6-dimethyldibenzothiophene(4,6-DMDBT) in simulated diesel at room temperature were investigated. The results show, BET surface area of Cu-BTC is up to 1501m2/g. When the initial concentration of sulfur in 4-MDBT is 46.80mg S/L, the static equilibrium adsorption capacity of Cu-BTC for 4-MDBT in simulated diesel is 2.40mg S/gads, which is about 20 times than that of other adsorbents. When the initial concentration of sulfur in 4,6-DMDBT is 48.47mg S/L, the equilibrium adsorption capacity of Cu-BTC for 4,6-DMDBT in simulated diesel is 2.04mg S/gads. The adsorption isotherms of Cu-BTC for 4-MDBT and 4,6-DMDBT indicate that when the equilibrium concentration of sulfur is 50mg S/L, the adsorption performance of Cu-BTC for 4-MDBT and 4,6-DMDBT following the order is 4-MDBT>4,6-DMDBT.

Adsorption Property of Cu-BTC for Dibenzothiophene Sulfide

2013 ◽  
Vol 634-638 ◽  
pp. 669-673
Author(s):  
Yang Yan Bian ◽  
Lei Tang ◽  
Qun Cui ◽  
Hai Yan Wang
Keyword(s):  
Adsorption Capacity ◽  
Hydrothermal Method ◽  
Adsorption Property ◽  
Equilibrium Concentration ◽  
Initial Concentration ◽  
Breakthrough Capacity ◽  
Adsorption Desulfurization ◽  
Dynamic Experiments ◽  
Desulfurization Process ◽  
Equilibrium Adsorption Capacity

Cu-BTC was synthesized by hydrothermal method. Adsorption desulfurization performance of Cu-BTC for dibenzothiophene sulfide was investigated. The adsorption property of Cu-BTC for dibenzothiophene and 4-methyldibenzothiophene in stimulated diesel were compared by equilibrium and dynamic experiments. The results show that when the equilibrium concentration is 0~50 mg S/L, the adsorption capacity of Cu-BTC for 4-methyldibenzothiophene is more than that of dibenzothiophene. When the equilibrium concentration is 50 mg S/L, the equilibrium adsorption capacity of Cu-BTC for 4-methyldibenzothiophene and dibenzothiophene are 17.54 mg S/gads and 15.64 mg S/gads, respectively. At the conditions of 30°C, 149.22h-1 and 0.1MPa, the initial concentration of dibenzothiophene and 4-methyldibenzothiophene is about 45.16~46.36 mg S/L, the adsorption property of 4-methyldibenzothiophene is superior than dibenzothiophene, the breakthrough capacity of Cu-BTC for 4-methyldibenzothiophehe is 1.73 times lager than dibenzothiophene. Cu-BTC shows an excellent prospect on diesel desulfurization process.

Synthesis and adsorption property of hydrophilic–hydrophobic macroporous crosslinked poly(methyl acryloyl diethylenetriamine)/poly(divinylbenzene) (PMADETA/PDVB) interpenetrating polymer networks (IPNs)

RSC Advances ◽  
2015 ◽  
Vol 5 (34) ◽  
pp. 26616-26624 ◽  
Author(s):  
Hebing Li ◽  
Zhenyu Fu ◽  
Li Yang ◽  
Chong Yan ◽  
Limiao Chen ◽  
...  
Keyword(s):  
Salicylic Acid ◽  
Adsorption Capacity ◽  
Adsorption Property ◽  
Polymer Networks ◽  
Interpenetrating Polymer Networks ◽  
Equilibrium Adsorption ◽  
Equilibrium Adsorption Capacity

A novel hydrophilic–hydrophobic PMADETA/PDVB IPNs possesses a large equilibrium adsorption capacity to salicylic acid.

Adsorptive Removal of Methylene Blue Using Magnetic Biochar Derived from Agricultural Waste Biomass: Equilibrium, Isotherm, Kinetic Study

2018 ◽  
Vol 17 (05) ◽  
pp. 1850002 ◽  
Author(s):  
M. Ruthiraan ◽  
E. C. Abdullah ◽  
N. M. Mubarak ◽  
Sabzoi Nizamuddin
Keyword(s):  
Methylene Blue ◽  
Adsorption Capacity ◽  
Agricultural Waste ◽  
Research Work ◽  
Equilibrium Adsorption ◽  
Isotherm Model ◽  
Bet Surface Area ◽  
Isotherm Models ◽  
Magnetic Biochar ◽  
Equilibrium Adsorption Capacity

Wastewater discharge from textile industries contribute much to water pollution and threaten the aqua ecosystem balance. Synthesis of agriculture waste based adsorbent is a smart move toward overcoming the critical environmental issues as well as a good waste management process implied. This research work describes the adsorption of methylene blue dye from aqueous solution on nickel oxide attached magnetic biochar derived from mangosteen peel. A series of characterization methods was employed such as FTIR, FESEM analysis and BET surface area analyzer to understand the adsorbent behavior produced at a heating temperature of 800[Formula: see text]C for 20[Formula: see text]min duration. The adsorbate pH value was varied to investigate the adsorption kinetic trend and the isotherm models were developed by determining the equilibrium adsorption capacity at varied adsorbate initial concentration. Equilibrium adsorption isotherm models were measured for single component system and the calculated data were analyzed by using Langmuir, Freundlich, Tempkin and Dubinin–Radushkevich isotherm equations. The Langmuir, Freundlich and Tempkin isotherm model exhibit a promising R2-correlation value of more than 0.95 for all three isotherm models. The Langmuir isotherm model reflectsan equilibrium adsorption capacity of 22.883[Formula: see text]mg[Formula: see text]g[Formula: see text].

Adsorption of Cr(VI) from Aqueous Solution by Ethylenediaminetetraacetic Acid-Chitosan-Modified Metal-Organic Framework

2020 ◽  
Vol 20 (3) ◽  
pp. 1660-1669 ◽  
Author(s):  
Yu-Ying Deng ◽  
Xin-Feng Xiao ◽  
Dan Wang ◽  
Bo Han ◽  
Yu Gao ◽  
...  
Keyword(s):  
Adsorption Isotherm ◽  
Adsorption Capacity ◽  
Single Molecule ◽  
Ethylenediaminetetraacetic Acid ◽  
Metal Organic Framework ◽  
Concentration Effects ◽  
Adsorption Time ◽  
Initial Concentration ◽  
Metal Organic ◽  
Organic Framework

Cu-BTC was synthesised by hydrothermal method in this study to adsorb and remove the toxic heavy metal hexavalent chromium Cr(VI) in water. The EDTA-chitosan/Cu-BTC was prepared by the surface modification of Cu-BTC with EDTA-modified chitosan. The initial concentration effects of adsorbed chromium solution, adsorbent dosage, adsorption time, adsorption temperature and pH of chromium solution on adsorption capacity were estimated using the single-factor optimisation experiment. Results show that the adsorption capacity of the modified composite was higher than that of Cu-BTC. Cu-BTC and EDTA-chitosan/Cu-BTC exhibited significant adsorption of Cr(VI) under acidic conditions in water and basically independent of temperature. Their adsorption processes conformed with the pseudo-second-order model. The Langmuir adsorption isotherm model obtained the adsorption isotherm, which indicated that the adsorption process was single molecule adsorption. Isotherm fitting obtained the maximum adsorption amounts of Cr(VI) for Cu-BTC and EDTA-chitosan/Cu-BTC at 27.32 and 46.51 mg·g-1, respectively. Factor and principal component analyses show that the main factors affecting the adsorption of Cr(VI) in the EDTA-chitosan/Cu-BTC composites are pH, initial concentration and adsorption time. Therefore, EDTA-chitosan-modified Cu-BTC was a more feasible metal-organic framework material than Cu-BTC because of better adsorption performance, which can be used for adsorption removal of Cr(VI) in water.

Adsorption Behavior of L-Histidine on a Novel Spherical Chitosan Adsorbent

2011 ◽  
Vol 236-238 ◽  
pp. 2574-2580
Author(s):  
Ming Hua Liu ◽  
Piao Piao Huang ◽  
Jian Yun Ou
Keyword(s):  
Adsorption Capacity ◽  
Ph Value ◽  
Equilibrium Adsorption ◽  
Solution Ph ◽  
Chitosan Beads ◽  
Adsorption Time ◽  
Initial Concentration ◽  
Adsorption Temperature ◽  
Equilibrium Adsorption Capacity ◽  
Isothermal Equation

The spherical chitosan adsorbent was prepared by graft copolymerization of acrylic acid onto the cross-linked spherical chitosan beads, and then was adopted to adsorb the L-histidine. The adsorption conditions, i.e., solution pH, adsorption time, initial concentration and adsorption temperature were optimized. The spherical chitosan adsorbent showed excellent equilibrium adsorption capacity of 78.3 mg/g for the L-histidine when the solution pH value was 7.5, adsorption time was 180 min, initial concentration was 1500 mg/L and the adsorption temperature was 25 °C. Moreover, the inorganic salt of NaCl also showed great effect on the equilibrium adsorption capacity exceeding 0.8 mol/L. The static adsorption processes followed the Langmuir adsorption isothermal equation and Freundlich adsorption isothermal equation. Furthermore, L-histidine could be desorbed with 1.5 mol/L of ammonia solution, and the regeneration capacity of the spherical chitosan adsorbent was excellent.

Preferential adsorption of ethane over ethylene on a Zr-based metal-organic framework: impacts of C-H···N hydrogen bonding

2021 ◽  
Author(s):  
Yaping Zhang ◽  
Daofei Lv ◽  
Jiayu Chen ◽  
Zewei Liu ◽  
Chongxiong Duan ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Surface Area ◽  
Energy Efficient ◽  
Metal Organic Framework ◽  
Bet Surface Area ◽  
Preferential Adsorption ◽  
Metal Organic ◽  
Organic Framework

The separation of ethylene/ethane mixture using energy-efficient technologies is important but challenging. Here, we prepared a Zr-based metal-organic framework (MOF-545) possessing high Brunauer-Emmett-Teller (BET) surface area of 2265.4 m2/g, and...

Facile formation of a nanostructured NiP2@C material for advanced lithium-ion battery anode using adsorption property of metal–organic framework

2016 ◽  
Vol 4 (24) ◽  
pp. 9593-9599 ◽  
Author(s):  
Gaihua Li ◽  
Hao Yang ◽  
Fengcai Li ◽  
Jia Du ◽  
Wei Shi ◽  
...  
Keyword(s):  
Adsorption Property ◽  
Metal Organic Framework ◽  
Specific Capacity ◽  
Lithium Ion ◽  
High Rate ◽  
Rate Performance ◽  
Lithium Storage ◽  
Metal Organic ◽  
High Rate Performance ◽  
Battery Anode

Utilizing the adsorption properties of MOFs, a nanostructured NiP2@C was successfully synthesized, which exhibited enhanced capability for lithium storage in terms of both the reversible specific capacity and high-rate performance.

scholarly journals Experimental and Modeling of Dicamba Adsorption in Aqueous Medium Using MIL-101(Cr) Metal-Organic Framework

Processes ◽  
2021 ◽  
Vol 9 (3) ◽  
pp. 419
Author(s):  
Hamza Ahmad Isiyaka ◽  
Khairulazhar Jumbri ◽  
Nonni Soraya Sambudi ◽  
Jun Wei Lim ◽  
Bahruddin Saad ◽  
...  
Keyword(s):  
Aqueous Medium ◽  
Adsorption Capacity ◽  
Environmental Concern ◽  
Metal Organic Framework ◽  
High Surface ◽  
High Surface Area ◽  
Data Matrix ◽  
Adsorption Parameters ◽  
Metal Organic ◽  
Organic Framework

Drift deposition of emerging and carcinogenic contaminant dicamba (3,6-dichloro-2-methoxy benzoic acid) has become a major health and environmental concern. Effective removal of dicamba in aqueous medium becomes imperative. This study investigates the adsorption of a promising adsorbent, MIL-101(Cr) metal-organic framework (MOF), for the removal of dicamba in aqueous solution. The adsorbent was hydrothermally synthesized and characterized using N2 adsorption-desorption isotherms, Brunauer, Emmett and Teller (BET), powdered X-ray diffraction (XRD), Fourier Transformed Infrared (FTIR) and field emission scanning electron microscopy (FESEM). Adsorption models such as kinetics, isotherms and thermodynamics were studied to understand details of the adsorption process. The significance and optimization of the data matrix, as well as the multivariate interaction of the adsorption parameters, were determined using response surface methodology (RSM). RSM and artificial neural network (ANN) were used to predict the adsorption capacity. In each of the experimental adsorption conditions used, the ANN gave a better prediction with minimal error than the RSM model. The MIL-101(Cr) adsorbent was recycled six times to determine the possibility of reuse. The results show that MIL-101(Cr) is a very promising adsorbent, in particular due to the high surface area (1439 m2 g−1), rapid equilibration (~25 min), high adsorption capacity (237.384 mg g−1) and high removal efficiency of 99.432%.

Highly selective CO2 separation from a CO2/C2H2 mixture using a diamine-appended metal–organic framework

2021 ◽  
Vol 9 (37) ◽  
pp. 21424-21428
Author(s):  
Doo San Choi ◽  
Dae Won Kim ◽  
Dong Won Kang ◽  
Minjung Kang ◽  
Yun Seok Chae ◽  
...  
Keyword(s):  
Adsorption Capacity ◽  
Metal Organic Framework ◽  
Co2 Separation ◽  
Metal Organic ◽  
Organic Framework

A diamine-appended metal–organic framework displays a top-tier CO2/C2H2 selectivity, a record-high CO2 adsorption capacity, and recyclability.

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