EQUILIBRIUM STUDIES OF Pb(II), Zn(II) AND Cd(II) IONS ONTO GRANULAR ACTIVATED CARBON AND NATURAL ZEOLITE

The isotherms and kinetics of zinc adsorption from aqueous solution onto granular activated carbon (GAC) and natural zeolite were studied using an agitated batch adsorber. The maximum adsorption capacities of GAC and natural zeolite towards zinc(II) from Langmuir adsorption isotherms were determined using experimental adsorption equilibrium data. The homogeneous solid diffusion model (HSD-model) combined with external mass transfer resistance was applied to fit the experimental kinetic data. The kinetics simulation study was performed using a computer program based on the proposed mathematical model and developed using gPROMS. As the two-mass transfer resistance approach was applied, two model parameters were fitted during the simulation study. External mass transfer and solid phase diffusion coefficients were obtained to predict the kinetic curves for varying initial Zn(II) concentration at constant agitation speed and constant adsorbent mass. For any particular Zn(II) - adsorbent system, k f was constant, except for the lowest initial concentration, while D s was found to increase with increasing initial Zn(II) concentration.

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Application of Carbonaceous Materials to Phenol Removal from Aqueous Solution by Adsorption

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.164.297 ◽

2012 ◽

Vol 164 ◽

pp. 297-301 ◽

Cited By ~ 1

Author(s):

Wei Fang Dong ◽

Li Hua Zang ◽

Qing Chao Gong ◽

Cun Cun Chen ◽

Cai Hong Zheng ◽

...

Keyword(s):

Activated Carbon ◽

Adsorption Capacity ◽

Petroleum Coke ◽

Granular Activated Carbon ◽

Powdered Activated Carbon ◽

Maximum Adsorption Capacity ◽

Phenol Removal ◽

Carbonaceous Materials ◽

Solution Ph ◽

Equilibrium Studies

Low cost carbonaceous materials were evaluated for their ability to remove phenol from wastewater. The effects of adsorbents dosage, contact time and maximum adsorption capacity were investigated for granular activated carbon, powdered activated carbon, petroleum coke and multi-walled carbon nanotube (MWNT). Equilibrium studies were conducted in 50mg/L initial phenol concentration, solution pH of 5 and at temperature of 23°C. The results showed the adsorption process was fast and it reached equilibrium in 3 h. Petroleum coke and MWNT had poor adsorption which could reach the removal efficiency of phenol with 43.18% and 36.64% respectively. The granular activated carbon possessed good adsorption ability to phenol with 96.40% at the optimum dosage 5g and optimum time 90min.The powdered activated carbon was an effective adsorbent with a maximum adsorption capacity of 42.32 mg/g.

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Study on the removal of nitrate in groundwater from Căpuş, Cluj county by natural zeolite of Mirşid and granular activated carbon

Desalination and Water Treatment ◽

10.1080/19443994.2014.967730 ◽

2014 ◽

pp. 1-10

Author(s):

Silvia Claudia Moşneag ◽

Violeta Popescu ◽

Călin Neamţu ◽

George Borodi

Keyword(s):

Activated Carbon ◽

Natural Zeolite ◽

Granular Activated Carbon

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Removal of perchlorate from drinking water using granular activated carbon modified by acidic functional group: Adsorption kinetics and equilibrium studies

Process Safety and Environmental Protection ◽

10.1016/j.psep.2017.03.014 ◽

2017 ◽

Vol 109 ◽

pp. 158-171 ◽

Cited By ~ 12

Author(s):

Rekha Krishnan G. ◽

R. Radhika ◽

T. Jayalatha ◽

Salu Jacob ◽

R. Rajeev ◽

...

Keyword(s):

Drinking Water ◽

Activated Carbon ◽

Adsorption Kinetics ◽

Functional Group ◽

Granular Activated Carbon ◽

Equilibrium Studies

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EQUILIBRIUM STUDIES IN ADSORPTION OF HEAVY METALS USING MODIFIED GRANULAR ACTIVATED CARBON

RASAYAN Journal of Chemistry ◽

10.31788/rjc.2020.1345752 ◽

2020 ◽

Vol 13 (04) ◽

pp. 2302-2307

Author(s):

Y. K. Meshram ◽

R. U. Khope ◽

P. P. Chahande

Keyword(s):

Heavy Metals ◽

Activated Carbon ◽

Granular Activated Carbon ◽

Equilibrium Studies

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Solid diffusion control of the adsorption of basic dyes onto granular activated carbon and natural zeolite in fixed bed columns

Journal of the Serbian Chemical Society ◽

10.2298/jsc0107463m ◽

2001 ◽

Vol 66 (7) ◽

pp. 463-475 ◽

Cited By ~ 21

Author(s):

L. Markovska ◽

V. Meshko ◽

V. Noveski ◽

M. Marinkovski

Keyword(s):

Activated Carbon ◽

Natural Zeolite ◽

Fixed Bed ◽

Granular Activated Carbon ◽

Diffusion Control ◽

Model Parameters ◽

Axial Dispersion Coefficient ◽

Solid Diffusion ◽

Fixed Bed Adsorption ◽

Basic Dyes

The adsorption of basic dyes from aqueous solutions onto granular activated carbon and natural zeolite was studied using a fixed bed column. The design procedures for fixed bed adsorption columns were investigated for two basic dyes Maxilon Goldgelb GL EC 400 % (MG-400) and Maxilon Schwarz FBL-01 300 % (MS-300). Acomputer program based on the solid diffusion control model has been developed. The model parameters: solid diffusion coefficient, DS, axial dispersion coefficient, DL and external mass transfer coefficient, kf for all the investigated systems were estimated by means of a best fit approach.

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