scholarly journals Adsorption Behaviour of Lactic Acid on Granular Activated Carbon and Anionic Resins: Thermodynamics, Isotherms and Kinetic Studies

Energies ◽  
2017 ◽  
Vol 10 (5) ◽  
pp. 665 ◽  
Author(s):  
Nirakar Pradhan ◽  
Eldon Rene ◽  
Piet Lens ◽  
Laura Dipasquale ◽  
Giuliana D’Ippolito ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Activated Carbon ◽  
Granular Activated Carbon ◽  
Kinetic Studies ◽  
Adsorption Behaviour

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.

scholarly journals Adsorption Equilibrium and Kinetic Studies of Effect of ortho-Substitution to Benzoic Acid in Aqueous Phase Using Granular Activated Carbon

2019 ◽  
Vol 31 (8) ◽  
pp. 1667-1674
Author(s):  
Roy George
Keyword(s):  
Salicylic Acid ◽  
Activated Carbon ◽  
Benzoic Acid ◽  
Aqueous Phase ◽  
Phthalic Acid ◽  
Adsorption Equilibrium ◽  
Granular Activated Carbon ◽  
Kinetic Studies ◽  
Equilibrium And Kinetics ◽  
Adsorption Equilibrium And Kinetics

Adsorption equilibrium and kinetics studies of effect of ortho-substituted benzoic acid in aqueous phase using granular activated carbon were investigated. The granular activated carbon (GAC) obtained from bituminous type coal having a surface area of 998 m2/g and loosely bounded and open pores morphology. The adorbates selected for this study was benzoic acid and its ortho-derivatives namely; salicylic acid, phthalic acid and o-toluic acid. The solubility of adsorbate in solvent affected the adsorption behaviour more pronouncly. The order of adsorption for adsorbates was found to be as: benzoic acid > salicylic acid > o-toluic acid > phthalic acid.

scholarly journals Adsorption Isotherm and Kinetic Studies of Pentachlorophenol Removal from Aqueous Solution onto Coconut Shell-based Granular Activated Carbon

2018 ◽  
Vol 11 (2) ◽  
pp. 68-78
Author(s):  
Mohd Hafizuddin ◽  
Siti Rozaimah S ◽  
Hassimi Abu Hasan ◽  
Reehan Adnee Abd. ◽  
Siti Nur Hatika ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Activated Carbon ◽  
Adsorption Isotherm ◽  
Granular Activated Carbon ◽  
Kinetic Studies ◽  
Coconut Shell

Isotherm and kinetic studies on adsorption of oil sands process-affected water organic compounds using granular activated carbon

Chemosphere ◽  
2018 ◽  
Vol 202 ◽  
pp. 716-725 ◽  
Author(s):  
Md Shahinoor Islam ◽  
Kerry N. McPhedran ◽  
Selamawit A. Messele ◽  
Yang Liu ◽  
Mohamed Gamal El-Din
Keyword(s):  
Activated Carbon ◽  
Organic Compounds ◽  
Oil Sands ◽  
Granular Activated Carbon ◽  
Kinetic Studies

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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