Removal of hexavalent chromium using activated and magnetic Ziziphus Jujube seed biochar - a column study

In this study, activated and magnetic biochar prepared from Ziziphus Jujube Seeds (ZJS) is used to remove Hexavalent Chromium (Cr(VI)) using Fixed Bed Column Experiment. Physicochemical characteristics of the activated and magnetic biochar such as functional groups, surface area, morphological study...

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Published inSeparation science and technology Vol. 59; no. 16; pp. 1550 - 1570
Main Authors Manthira Giri, Prathap, Parthasarathy, Purushothaman
Format Journal Article
LanguageEnglish
Published Abingdon Taylor & Francis 01.11.2024
Taylor & Francis Ltd
Subjects
Adsorption
Bed height
Charcoal
Chromium
chromium: flow rate
fixed bed column
Fixed beds
Flow rates
Flow velocity
Functional groups
Hexavalent chromium
magnetic biochar
Magnetic properties
Physical characteristics
Ziziphus
Online AccessGet full text
ISSN0149-6395
1520-5754
DOI10.1080/01496395.2024.2394476

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Abstract In this study, activated and magnetic biochar prepared from Ziziphus Jujube Seeds (ZJS) is used to remove Hexavalent Chromium (Cr(VI)) using Fixed Bed Column Experiment. Physicochemical characteristics of the activated and magnetic biochar such as functional groups, surface area, morphological study, and magnetic properties were analyzed. The column experiment was carried out for varying bed heights (2, 4, 6, 8, 10 cm), flow rates (20, 30 ml/min), and initial chromium concentrations (40, 60, 80 ppm) to determine adsorption performance of the studied biochar. The characteristic study found that magnetic biochar (MB) has good magnetic properties and crystallinity nature with essential functional groups such as C-O, FeO. The study found that Magnetic Biochar (MB) effectively removed 99% of hexavalent chromium through column adsorption under optimal conditions, including bed height of 6 cm, 60ppm Chromium concentration, and flow rate of 20 ml/min. Kinetic model study showed that Magnetic Biochar (MB) showed very good agreement with Adam Bohart Model, with R 2 of 0.97, which is best fit model than other model studies whereas the other model showed a lesser R 2 value. The study reveals that magnetic biochar from Ziziphus Jujube Seed is optimal adsorbent for removal of Cr(VI) through column adsorption experiment. Activated, Magnetic biochar and Magnetic activated biochar was used to remove Cr(VI) in fixed bed column studies. Maximum Cr(VI) removal efficiency was achieved at 6 cm bed height and 20 ml/min for all biochars. Magnetic biochar showed maximum Cr(VI) removal efficiency of 99% at 60 ppm and 95% at 40 and 80 ppm. Langmuir isotherm, Pseudo second order kinetic and Adam Bohart Model were the best fit kinetic model.
AbstractList In this study, activated and magnetic biochar prepared from Ziziphus Jujube Seeds (ZJS) is used to remove Hexavalent Chromium (Cr(VI)) using Fixed Bed Column Experiment. Physicochemical characteristics of the activated and magnetic biochar such as functional groups, surface area, morphological study, and magnetic properties were analyzed. The column experiment was carried out for varying bed heights (2, 4, 6, 8, 10 cm), flow rates (20, 30 ml/min), and initial chromium concentrations (40, 60, 80 ppm) to determine adsorption performance of the studied biochar. The characteristic study found that magnetic biochar (MB) has good magnetic properties and crystallinity nature with essential functional groups such as C-O, FeO. The study found that Magnetic Biochar (MB) effectively removed 99% of hexavalent chromium through column adsorption under optimal conditions, including bed height of 6 cm, 60ppm Chromium concentration, and flow rate of 20 ml/min. Kinetic model study showed that Magnetic Biochar (MB) showed very good agreement with Adam Bohart Model, with R2 of 0.97, which is best fit model than other model studies whereas the other model showed a lesser R2 value. The study reveals that magnetic biochar from Ziziphus Jujube Seed is optimal adsorbent for removal of Cr(VI) through column adsorption experiment.
In this study, activated and magnetic biochar prepared from Ziziphus Jujube Seeds (ZJS) is used to remove Hexavalent Chromium (Cr(VI)) using Fixed Bed Column Experiment. Physicochemical characteristics of the activated and magnetic biochar such as functional groups, surface area, morphological study, and magnetic properties were analyzed. The column experiment was carried out for varying bed heights (2, 4, 6, 8, 10 cm), flow rates (20, 30 ml/min), and initial chromium concentrations (40, 60, 80 ppm) to determine adsorption performance of the studied biochar. The characteristic study found that magnetic biochar (MB) has good magnetic properties and crystallinity nature with essential functional groups such as C-O, FeO. The study found that Magnetic Biochar (MB) effectively removed 99% of hexavalent chromium through column adsorption under optimal conditions, including bed height of 6 cm, 60ppm Chromium concentration, and flow rate of 20 ml/min. Kinetic model study showed that Magnetic Biochar (MB) showed very good agreement with Adam Bohart Model, with R 2 of 0.97, which is best fit model than other model studies whereas the other model showed a lesser R 2 value. The study reveals that magnetic biochar from Ziziphus Jujube Seed is optimal adsorbent for removal of Cr(VI) through column adsorption experiment. Activated, Magnetic biochar and Magnetic activated biochar was used to remove Cr(VI) in fixed bed column studies. Maximum Cr(VI) removal efficiency was achieved at 6 cm bed height and 20 ml/min for all biochars. Magnetic biochar showed maximum Cr(VI) removal efficiency of 99% at 60 ppm and 95% at 40 and 80 ppm. Langmuir isotherm, Pseudo second order kinetic and Adam Bohart Model were the best fit kinetic model.
Author Parthasarathy, Purushothaman
Manthira Giri, Prathap
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  organization: SRM Institute of Science and Technology
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Snippet In this study, activated and magnetic biochar prepared from Ziziphus Jujube Seeds (ZJS) is used to remove Hexavalent Chromium (Cr(VI)) using Fixed Bed Column...
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SubjectTerms Adsorption
Bed height
Charcoal
Chromium
chromium: flow rate
fixed bed column
Fixed beds
Flow rates
Flow velocity
Functional groups
Hexavalent chromium
magnetic biochar
Magnetic properties
Physical characteristics
Ziziphus
Title Removal of hexavalent chromium using activated and magnetic Ziziphus Jujube seed biochar - a column study
URI https://www.tandfonline.com/doi/abs/10.1080/01496395.2024.2394476
https://www.proquest.com/docview/3106949097
Volume 59
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