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Research Article
Eman Alabbad
Imam Abdulrahman Bin Faisal University
Corresponding Author
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Background Water contamination has increasingly become a significant problem affecting the welfare of living organisms perceived to be aquatic beneficiaries. The nature and origin of the contaminant always determines the purification techniques. The most common contaminants in wastewater include organic compounds such as dyes that must be eliminated to enhance water purity and safety.
Result The results indicate that the removal of DY50 by the modified chitosan was affected by the solution pH, sorbent dosage, initial DY50 concentration, contact time, and temperature. The experimental data were fitted to the Langmuir, Freundlich, and Temkin isotherms, and Langmuir isotherm showed the best fit. The kinetic data were fitted to the pseudo-first-order and pseudo-second-order rate equations. The removal rate was 97.9% by chemisorption components after the three hours at about 0.05 g of sorbent dose and 100 ppm of the Direct Yellow 50 dye initial concentration. The adsorption behavior of the modified chitosan for the removal of DY50 was well-described using the pseudo-second-order kinetic model, Intraparticle diffusion analysis was also conducted. The thermodynamic properties such as free energy (∆G), enthalpy (∆H), and entropy (∆S), in addition to the intra-particle diffusion rate were similarly defined.
Conclusion The pH, initial DY50 concentration, sorbent dosage, adsorption temperature, and contact time had a significant effect on the adsorption of DY50 by chitosan-iso-vanillin.
Keywords
Adsorption, Chelating polymer, Chitosan-iso-vanillin resins, Direct Yellow 50 dye, Recycling, Wastewater treatment.
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CURRENT STATUS: Under Revision
Version 1
Posted 21 Dec, 2020
No community comments so far
Editorial decision: Major revision
On 11 Jan, 2021
Reviews received
Received 02 Jan, 2021
Reviews received
Received 01 Jan, 2021
Reviewers agreed
On 31 Dec, 2020
Reviewers agreed
On 28 Dec, 2020
Reviewers agreed
On 25 Dec, 2020
Reviewers invited
Invitations sent on 18 Dec, 2020
Editor assigned
On 18 Dec, 2020
Editor invited
On 18 Dec, 2020
Submission checks complete
On 18 Dec, 2020
First submitted
On 15 Dec, 2020
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This preprint is under consideration at BMC Chemistry. A preprint is a preliminary version of a manuscript that has not completed peer review at a journal. Research Square does not conduct peer review prior to posting preprints. The posting of a preprint on this server should not be interpreted as an endorsement of its validity or suitability for dissemination as established information or for guiding clinical practice.
Learn more about In Review
Research Article
Eman Alabbad
Imam Abdulrahman Bin Faisal University
Corresponding Author
Badges
Prescreen
This manuscript passed our Prescreen assessment
Complete author information
Appropriate declaration statements
Potential risks to human health
Prescreen
Peer Review Timeline
CURRENT STATUS: Under Revision
Version 1
Posted 21 Dec, 2020
No community comments so far
Editorial decision: Major revision
On 11 Jan, 2021
Reviews received
Received 02 Jan, 2021
Reviews received
Received 01 Jan, 2021
Reviewers agreed
On 31 Dec, 2020
Reviewers agreed
On 28 Dec, 2020
Reviewers agreed
On 25 Dec, 2020
Reviewers invited
Invitations sent on 18 Dec, 2020
Editor assigned
On 18 Dec, 2020
Editor invited
On 18 Dec, 2020
Submission checks complete
On 18 Dec, 2020
First submitted
On 15 Dec, 2020
Metrics
Comments: 0
PDF Downloads: ...
HTML Views: ...
License:
This work is licensed under a CC BY 4.0 License. Read Full License
Background Water contamination has increasingly become a significant problem affecting the welfare of living organisms perceived to be aquatic beneficiaries. The nature and origin of the contaminant always determines the purification techniques. The most common contaminants in wastewater include organic compounds such as dyes that must be eliminated to enhance water purity and safety.
Result The results indicate that the removal of DY50 by the modified chitosan was affected by the solution pH, sorbent dosage, initial DY50 concentration, contact time, and temperature. The experimental data were fitted to the Langmuir, Freundlich, and Temkin isotherms, and Langmuir isotherm showed the best fit. The kinetic data were fitted to the pseudo-first-order and pseudo-second-order rate equations. The removal rate was 97.9% by chemisorption components after the three hours at about 0.05 g of sorbent dose and 100 ppm of the Direct Yellow 50 dye initial concentration. The adsorption behavior of the modified chitosan for the removal of DY50 was well-described using the pseudo-second-order kinetic model, Intraparticle diffusion analysis was also conducted. The thermodynamic properties such as free energy (∆G), enthalpy (∆H), and entropy (∆S), in addition to the intra-particle diffusion rate were similarly defined.
Conclusion The pH, initial DY50 concentration, sorbent dosage, adsorption temperature, and contact time had a significant effect on the adsorption of DY50 by chitosan-iso-vanillin.
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6
Figure 7
Figure 8
This preprint is available for download as a PDF.
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