Equilibrium, Kinetic and Thermodynamic Studies for the Adsorption of Gemfibrozil onto Graphitized Carbon Black (GCB)

NANO ◽  
2020 ◽  
Vol 15 (09) ◽  
pp. 2050120
Author(s):  
Shicheng Liu ◽  
Guanjing Qi ◽  
Cong Ding ◽  
Kun Tan ◽  
Meiling Yin ◽  
...  
Keyword(s):  
Carbon Black ◽  
Physical Adsorption ◽  
Fixed Bed ◽  
Graphitized Carbon Black ◽  
Order Kinetic ◽  
Solution Ph ◽  
Thermodynamic Studies ◽  
Graphitized Carbon ◽  
Adsorption Processes ◽  
Text Interaction

Adsorption of gemfibrozil (GF) from aqueous solution by highly/lowly graphitized carbon black (GCB-H/GCB-L) was investigated by batch and fixed-bed experiments. Results showed that the adsorption of GF onto GCB greatly depended on solution pH and graphitization of carbon. The pseudo-second-order kinetic model was found to be more appropriate in describing the adsorption processes of two GCBs. The adsorption equilibriums were well fitted with the Langmuir isotherm model, and GCB-H exhibited a higher adsorption capacity of 47.68 mg g−1 at 298 K, compared with GCB-L of 4.33 mg g−1. GCB-H achieved 69.76% GF removals in simulated water after 6 h, indicating its potential practicability. The GCBs were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM) and Fourier transform infrared spectroscopy (FTIR), and the results indicated that the [Formula: see text]-[Formula: see text] interaction was strongly involved in the adsorption. Thermodynamic studies further suggested that the adsorption of GF on GCB-H was exothermic, which could happen spontaneously at any temperature mainly through [Formula: see text]-[Formula: see text] interaction for physical adsorption on the surface of the plane.

Physical adsorption of gases on graphitized carbon black

1978 ◽  
Vol 33 (12) ◽  
pp. 1659-1665 ◽  
Author(s):  
Eduardo D. Glandt ◽  
Alan L. Myers ◽  
Donald D. Fitts
Keyword(s):  
Carbon Black ◽  
Physical Adsorption ◽  
Graphitized Carbon Black ◽  
Graphitized Carbon ◽  
Adsorption Of Gases

scholarly journals Physical adsorption of CO2 on graphite: monolayer and multilayer regions

1985 ◽  
Vol 2 (4) ◽  
pp. 253-262 ◽  
Author(s):  
E. J. Bottani ◽  
L. E. Cascarini De Torre
Keyword(s):  
Carbon Black ◽  
Physical Adsorption ◽  
Graphitized Carbon Black ◽  
Distribution Functions ◽  
Experimental Adsorption ◽  
Graphitized Carbon ◽  
Adsorption Energy Distribution ◽  
Adsorption Energy Distribution Functions ◽  
Adsorption Of Co2 ◽  
Energy Distribution Functions

Different models which describe CO2 physisorption on a graphitized carbon black are analysed in the range 194·7 to 273·2 K. They are related to the thermodynamic functions and to adsorption energy distribution functions, which are obtained starting from experimental adsorption isotherms. This calculation, previously presented, is based on an extension of the Ross and Olivier method.

A Preparation of High Resolution Standards for Electron Microscopy. Part II

1971 ◽  
Vol 29 ◽  
pp. 160-161
Author(s):  
Akira Tanaka ◽  
David F. Harling
Keyword(s):  
Electron Microscopy ◽  
High Resolution ◽  
Carbon Black ◽  
Single Crystal ◽  
Dark Field ◽  
Graphitized Carbon Black ◽  
Graphitized Carbon ◽  
Dark Field Imaging ◽  
Crystal Films ◽  
Micro Holes

In the previous paper, the author reported on a technique for preparing vapor-deposited single crystal films as high resolution standards for electron microscopy. The present paper is intended to describe the preparation of several high resolution standards for dark field microscopy and also to mention some results obtained from these studies. Three preparations were used initially: 1.) Graphitized carbon black, 2.) Epitaxially grown particles of different metals prepared by vapor deposition, and 3.) Particles grown epitaxially on the edge of micro-holes formed in a gold single crystal film.The authors successfully obtained dark field micrographs demonstrating the 3.4Å lattice spacing of graphitized carbon black and the Au single crystal (111) lattice of 2.35Å. The latter spacing is especially suitable for dark field imaging because of its preparation, as in 3.), above. After the deposited film of Au (001) orientation is prepared at 400°C the substrate temperature is raised, resulting in the formation of many square micro-holes caused by partial evaporation of the Au film.

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