Ammonia adsorption in a fixed bed of activated carbon

Abstract One of the major pollutants in leachate is phenol. Due to safety and environmental problems, removal of phenol from leachate is essential. Most of the adsorption studies have been conducted in batch systems. Practically, large-scale adsorption is carried out in continuous systems. In this research, the adsorption method has been used for phenol removal from leachate by using walnut shell activated carbon (WSA) and coconut shell activated carbon (CSA) as adsorbents in a fixed-bed column. The effect of adsorbent bed depth, influent phenol concentration and type of adsorbent on adsorption was explored. By increasing the depth of the adsorbent bed in the column, phenol removal efficiency and saturation time increase significantly. Also, by increasing the influent concentration, saturation time of the column decreases. To predict the column performance and describe the breakthrough curve, three kinetic models of Yon-Nelson, Adams-Bohart and Thomas were applied. The results of the experiments indicate that there is a good match between the results of the experiment and the predicted results of the models.

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Ammonia adsorption by MgCl2, CaCl2 and BaCl2 confined to porous alumina: the fixed bed adsorber

Reaction Kinetics and Catalysis Letters ◽

10.1007/s11144-005-0259-5 ◽

2005 ◽

Vol 85 (1) ◽

pp. 183-188 ◽

Cited By ~ 27

Author(s):

Vasily E. Sharonov ◽

Yury I. Aristov

Keyword(s):

Porous Alumina ◽

Fixed Bed ◽

Ammonia Adsorption

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Catalytic Oxidation of 4-Hydroxybenzoic Acid on Activated Carbon in Batch Autoclave and Fixed-Bed Reactors

Industrial & Engineering Chemistry Research ◽

10.1021/ie0700314 ◽

2007 ◽

Vol 46 (25) ◽

pp. 8388-8396 ◽

Cited By ~ 13

Author(s):

Carmen Creanga Manole ◽

Carine Julcour-Lebigue ◽

Anne-Marie Wilhelm ◽

Henri Delmas

Keyword(s):

Activated Carbon ◽

Catalytic Oxidation ◽

Fixed Bed ◽

Hydroxybenzoic Acid ◽

Fixed Bed Reactors

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Thiol-incorporated activated carbon derived from fir wood sawdust as an efficient adsorbent for the removal of mercury ion: Batch and fixed-bed column studies

Process Safety and Environmental Protection ◽

10.1016/j.psep.2015.12.006 ◽

2016 ◽

Vol 100 ◽

pp. 22-35 ◽

Cited By ~ 43

Author(s):

Fatemeh Kazemi ◽

Habibollah Younesi ◽

Ali Asghar Ghoreyshi ◽

Nader Bahramifar ◽

Ava Heidari

Keyword(s):

Activated Carbon ◽

Fixed Bed ◽

Mercury Ion ◽

Column Studies ◽

Fixed Bed Column ◽

Wood Sawdust ◽

Efficient Adsorbent

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Microwave induced activated carbon for the removal of metal ions in fixed-bed column study: modelling and mechanisms

10.5004/dwt.2021.27035 ◽

2021 ◽

Vol 221 ◽

pp. 139-151

Author(s):

Omar S.A. Al-Khazrajy ◽

Salam A. Mohammed ◽

Omaimah Al-Musallami ◽

Zahour Al-Rawahi ◽

Emad Yousif

Keyword(s):

Activated Carbon ◽

Metal Ions ◽

Fixed Bed ◽

Fixed Bed Column ◽

Column Study ◽

Removal Of Metal ◽

Removal Of Metal Ions

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Adsorption and Desorption of Low-Content Toluene^|^#8211;Ethyl Acetate Gas Mixtures on Fixed-Bed Activated Carbon for Removal and Concentration by TSA

KAGAKU KOGAKU RONBUNSHU ◽

10.1252/kakoronbunshu.40.18 ◽

2014 ◽

Vol 40 (1) ◽

pp. 18-26

Author(s):

Toshio Yamaguchi ◽

Kazuya Aoki ◽

Makoto Sakurai ◽

Hideo Kameyama

Keyword(s):

Activated Carbon ◽

Ethyl Acetate ◽

Fixed Bed ◽

Gas Mixtures ◽

Adsorption And Desorption

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Granular activated carbon (GAC) adsorption in tertiary wastewater treatment: experiments and models

Water Science & Technology ◽

10.2166/wst.2003.0030 ◽

2003 ◽

Vol 47 (1) ◽

pp. 113-120 ◽

Cited By ~ 14

Author(s):

D.S. Chaudhary ◽

S. Vigneswaran ◽

V. Jegatheesan ◽

H.H. Ngo ◽

H. Moon ◽

...

Keyword(s):

Wastewater Treatment ◽

Activated Carbon ◽

Fixed Bed ◽

Granular Activated Carbon ◽

Developed Countries ◽

Synthetic Wastewater ◽

Batch Adsorption ◽

Model Parameters ◽

Wide Range ◽

Gac Adsorption

Wastewater treatment has always been a major concern in the developed countries. Over the last few decades, activated carbon adsorption has gained importance as an alternative tertiary wastewater treatment and purification process. In this study, granular activated carbon (GAC) adsorption was evaluated in terms of total organic carbon (TOC) removal from low strength synthetic wastewater. This paper provides details on adsorption experiments conducted on synthetic wastewater to develop suitable adsorption isotherms. Although the inorganics used in the synthetic wastewater solution had an overall unfavourable effect on adsorption of organics, the GAC adsorption system was found to be effective in removing TOC from the wastewater. This study showed that equation of state (EOS) theory was able to fit the adsorption isotherm results more precisely than the most commonly used Freundlich isotherm. Biodegradation of the organics with time was the most crucial and important aspect of the system and it was taken into account in determining the isotherm parameters. Initial organic concentration of the wastewater was the determining factor of the model parameters, and hence the isotherm parameters were determined covering a wide range of initial organic concentrations of the wastewater. As such, the isotherm parameters derived using the EOS theory could predict the batch adsorption and fixed bed adsorption results of the multi-component system successfully. The isotherm parameters showed a significant effect on the determination of the mass transfer coefficients in batch and fixed bed systems.

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