06/00053 Dynamic adsorption of trinitrotoluene on granular activated carbon

2006 ◽  
Vol 47 (1) ◽  
pp. 9
Keyword(s):  
Activated Carbon ◽  
Granular Activated Carbon ◽  
Dynamic Adsorption

scholarly journals Adsorption of Nitrate onto ZnCl2-Modified Coconut Granular Activated Carbon: Kinetics, Characteristics, and Adsorption Dynamics

2018 ◽  
Vol 2018 ◽  
pp. 1-12 ◽  
Author(s):  
Lingjie Liu ◽  
Min Ji ◽  
Fen Wang
Keyword(s):  
Activated Carbon ◽  
Granular Activated Carbon ◽  
Kinetic Studies ◽  
Surface Characteristics ◽  
Electrostatic Attraction ◽  
Batch Adsorption ◽  
Dynamic Adsorption ◽  
Batch Experiments ◽  
Nitrate Adsorption ◽  
Pseudo Second Order

Coconut granular activated carbon (CGAC) was modified by impregnating with ZnCl2solution to remove nitrate from aqueous solutions. Sorption isotherm and kinetic studies were carried out in a series of batch experiments. Nitrate adsorption of both ZnCl2-modified CGAC and CGAC fitted the Langmuir and Freundlich models. Batch adsorption isotherms indicated that the maximum adsorption capacities of ZnCl2-modified CGAC and CGAC were calculated as 14.01 mgN·g−1and 0.28 mgN·g−1, respectively. The kinetic data obtained from batch experiments were well described by pseudo-second-order model. The column study was used to analyze the dynamic adsorption process. The highest bed adsorption capacity of 1.76 mgN·g−1was obtained by 50 mgN·L−1inlet nitrate concentration, 20 g adsorbents, and 10 ml·min−1flow rate. The dynamic adsorption data were fitted well to the Thomas and Yoon–Nelson models with coefficients of correlationR2 > 0.834 at different conditions. Surface characteristics and pore structures of CGAC and ZnCl2-modified CGAC were performed by SEM and EDAX and BET and indicated that ZnCl2had adhered to the surface of GAC after modified. Zeta potential, Raman spectra, and FTIR suggested the electrostatic attraction between the nitrate ions and positive charge. The results revealed that the mechanism of adsorption nitrate mainly depended on electrostatic attraction almost without any chemical interactions.

The behavior of xenon dynamic adsorption on granular activated carbon packed bed adsorber

2010 ◽  
Vol 287 (2) ◽  
pp. 609-616 ◽  
Author(s):  
Chongyang Zhou ◽  
Shujuan Feng ◽  
Guoqing Zhou ◽  
Yuren Jin ◽  
Junfu Liang ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Granular Activated Carbon ◽  
Packed Bed ◽  
Dynamic Adsorption

Dynamic adsorption of trinitrotoluene on granular activated carbon

2005 ◽  
Vol 117 (2-3) ◽  
pp. 121-128 ◽  
Author(s):  
Vedrana Marinović ◽  
Mirjana Ristić ◽  
Milica Dostanić
Keyword(s):  
Activated Carbon ◽  
Granular Activated Carbon ◽  
Dynamic Adsorption

Use of Wheeler–Jonas equation to explain xenon dynamic adsorption breakthrough curve on granular activated carbon

2010 ◽  
Vol 288 (1) ◽  
pp. 251-256 ◽  
Author(s):  
Chongyang Zhou ◽  
Yuren Jin ◽  
Hui Xu ◽  
Shujuan Feng ◽  
Guoqing Zhou ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Breakthrough Curve ◽  
Granular Activated Carbon ◽  
Dynamic Adsorption

Thermal stability and decomposition of perfluoroalkyl substances on spent granular activated carbon

2020 ◽  
Author(s):  
Feng Xiao ◽  
Bin Yao ◽  
Pavankumar Challa Sasi ◽  
Svetlana Golovko ◽  
Dana Soli ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Activated Carbon ◽  
Granular Activated Carbon ◽  
Perfluoroalkyl Substances

Cost-effective water treatment of polluted surface water by using direct filtration and granular activated carbon filtration

2002 ◽  
Vol 2 (1) ◽  
pp. 233-240 ◽  
Author(s):  
J. Cromphout ◽  
W. Rougge
Keyword(s):  
Activated Carbon ◽  
Water Treatment ◽  
Treatment Process ◽  
Treatment Plant ◽  
Granular Activated Carbon ◽  
Cost Effective ◽  
Water Treatment Plant ◽  
Direct Filtration ◽  
Carbon Filtration ◽  
Effective Water

In Harelbeke a Water Treatment Plant with a capacity of 15,000 m3/day, using Schelde river water has been in operation since April 1995. The treatment process comprises nitrification, dephosphatation by direct filtration, storage into a reservoir, direct filtration, granular activated carbon filtration and disinfection. The design of the three-layer direct filters was based on pilot experiments. The performance of the plant during the five years of operation is discussed. It was found that the removal of atrazin by activated carbon depends on the water temperature.

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