Breakthrough analysis for hexavalent chromium removal from drinking water in a fixed bed column

The activated carbon of Eucalyptus globulus was tested for their effectiveness in removing hexavalent chromium from aqueous solution using column experiments. Result revealed that adsorption of chromium(VI) on eucalyptus bark carbon was endothermic in nature. Thermodynamic parameters such as the entropy change, enthalpy change and Gibbs free energy change were found to be 1.39 kJ mol−1 K−1, 1.08 kJ mol−1 and −3.85 kJ mol−1, respectively. Different chromium concentrations were used for the fixed bed adsorption studies. The pre- and post-treated adsorbents were characterized using a FTIR spectroscopic technique. It was concluded that Eucalyptus bark carbon column could be used effectively for removal of hexavalent chromium from aqueous solution at optimal column conditions. This study showed that this biological material is potential adsorbent of Cr(VI) from water.

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Adsorption of hexavalent chromium from aqueous solution by modified corn stalk: A fixed-bed column study

Bioresource Technology ◽

10.1016/j.biortech.2011.11.110 ◽

2012 ◽

Vol 113 ◽

pp. 114-120 ◽

Cited By ~ 259

Author(s):

Suhong Chen ◽

Qinyan Yue ◽

Baoyu Gao ◽

Qian Li ◽

Xing Xu ◽

...

Keyword(s):

Aqueous Solution ◽

Hexavalent Chromium ◽

Fixed Bed ◽

Corn Stalk ◽

Fixed Bed Column ◽

Column Study

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FIXED-BED ADSORPTION OF AQUEOUS VANILLIN ONTO RESIN H103

IIUM Engineering Journal ◽

10.31436/iiumej.v18i2.804 ◽

2017 ◽

Vol 18 (2) ◽

pp. 94-104

Author(s):

Rozaimi Abu Samah

Keyword(s):

Aqueous Solution ◽

Flow Rate ◽

Adsorption Process ◽

Fixed Bed ◽

Maximum Adsorption Capacity ◽

Feed Flow Rate ◽

Fixed Bed Column ◽

Initial Concentration ◽

Bed Height ◽

Fixed Bed Adsorption

The main objective of this work was to design and model fixed bed adsorption column for the adsorption of vanillin from aqueous solution. Three parameters were evaluated for identifying the performance of vanillin adsorption in fixed-bed mode, which were bed height, vanillin initial concentration, and feed flow rate. The maximum adsorption capacity was increased more than threefold to 314.96 mg vanillin/g resin when the bed height was increased from 5 cm to 15 cm. Bohart-Adams model and Belter equation were used for designing fixed-bed column and predicting the performance of the adsorption process. A high value of determination coefficient (R2) of 0.9672 was obtained for the modelling of vanillin adsorption onto resin H103.

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Hexavalent chromium removal and total chromium biosorption from aqueous solution by Quercus crassipes acorn shell in a continuous up-flow fixed-bed column: Influencing parameters, kinetics, and mechanism

PLoS ONE ◽

10.1371/journal.pone.0227953 ◽

2020 ◽

Vol 15 (1) ◽

pp. e0227953 ◽

Cited By ~ 3

Author(s):

Erick Aranda-García ◽

Eliseo Cristiani-Urbina

Keyword(s):

Aqueous Solution ◽

Hexavalent Chromium ◽

Fixed Bed ◽

Kinetics And Mechanism ◽

Chromium Removal ◽

Total Chromium ◽

Fixed Bed Column ◽

Influencing Parameters ◽

Chromium Biosorption

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Fixed bed adsorption of diquat dibromide from aqueous solution using carbon nanotubes

RSC Advances ◽

10.1039/c5ra11167f ◽

2015 ◽

Vol 5 (76) ◽

pp. 61508-61512 ◽

Cited By ~ 21

Author(s):

Anthony B. Dichiara ◽

Samuel F. Harlander ◽

Reginald E. Rogers

Keyword(s):

Carbon Nanotubes ◽

Aqueous Solution ◽

Wastewater Treatment ◽

Aqueous Solutions ◽

Fixed Bed ◽

Fixed Bed Column ◽

Fixed Bed Adsorption ◽

Different Types

Carbon nanotubes are increasingly studied as attractive adsorbents for wastewater treatment. The present work exploits the attributes of different types of CNTs in a fixed bed column for the dynamic uptake of diquat dibromide from aqueous solutions.

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Removal of Cr (VI) from aqueous solution by activated charcoal derived from Sapindus trifoliate L fruit biomass using continuous fixed bed column studies

Water Science & Technology ◽

10.2166/wst.2021.217 ◽

2021 ◽

Author(s):

Samir Mohanta ◽

Monaj Kumar Sahu ◽

Prakash Chandra Mishra ◽

Anil Kumar Giri

Keyword(s):

Aqueous Solution ◽

Hexavalent Chromium ◽

Activated Charcoal ◽

Fixed Bed ◽

Maximum Adsorption Capacity ◽

Thomas Model ◽

Column Studies ◽

Fixed Bed Column ◽

Initial Concentration ◽

Bed Height

Abstract In this study, the removal of hexavalent chromium from aqueous solution were examined using activated charcoal derived from Sapindus trifoliate L fruit biomass in continuous fixed-bed column studies. The activated S. trifoliate L fruit charcoal was prepared by treating the fruit powder using concentrated nitric acid solution. Experiments were performed to investigate the effect of bed-height and initial concentration on the breakthrough and saturation times. The breakthrough and saturation time increases with increase in bed-height and initial concentration of chromium solutions. The maximum adsorption capacity of S. trifoliate L charcoal for hexavalent chromium was found to be 1.719 mg/g in the bed height 15 cm and initial concentration 10 mg/L, respectively. Column data required at various conditions were explained using Bohart-Adams and Thomas model. Two models were found to be suitable to describe the definite part of the dynamic behaviour of the column with regard to bed-height and initial concentration of hexavalent chromium. On comparison of Adjusted R2 and estimated standard error, the Thomas model was found to best-fitted model and can be used to predict the adsorption of the hexavalent chromium in fixed-bed column studies. Activated Sapindus trifoliate L fruit charcoal was characterised by SEM – EDX and FTIR analysis.

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