See the published version of this preprint at Environmental Systems Research.
This is a preprint, 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
A new preprint design is coming!
We have improved readability, clarity, accessibility, and opportunities for engagement.
Research
License:
This work is licensed under a CC BY 4.0 License. Read Full License
Background: The release of hazardous synthetic dyes into industrial effluents has emerged as an environmental problem requiring remediation. The present study focused on the preparation of a new and environmentally-friendly material (adsorbent) for the remediation of hazardous dyes from aqueous solution. The low cost adsorbent was prepared from locally available khat (Catha edulis) stem which considered as waste and accumulated on waste disposal areas of Woldia town, Ethiopia. Comprehensive characterization studies were carried out on the bio-adsorbent such as proximate analyses, specific surface area, point of zero charge and FT-IR analysis.
Results: The proximate analysis shows the prepared adsorbent has very high fixed carbon content (83.65%), which refers to high quality of the adsorbent. The adsorption performance of the prepared activated carbon was optimized by varying operational parameters such as initial dye concentration (10 mg/L), pH (10), dosage (0.5 g), and contact time (60 min). The maximum removal efficiency of the prepared adsorbent at those optimum conditions was 98.8%. The experimental data was tested by most common kinetics and isotherm models. It was observed that the pseudo-second-order kinetic model fits better with good correlation coefficient and the equilibrium data fitted well with the Freundlich isotherm model.
Conclusion: In summery this study demonstrated that the waste bio sorbent could be employed as an effective and eco-friendly alternative for the cleanup of dye-polluted aqueous system.
Keywords
Khat (Catha edulis), Bio sorption, Activation, Adsorbent capacity, Malachite green dye
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6
Figure 7
Figure 8
Figure 9
Figure 10
Figure 11
Figure 12
Figure 13
The full text of this article is available to read as a PDF.
Loading...
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: Published
View the published article at Environmental Systems Research.
Community comments: 1
Editorial decision: Accept
On 27 Sep, 2020
Editor assigned
On 26 Sep, 2020
Submission checks complete
On 25 Sep, 2020
Editor invited
On 25 Sep, 2020
Version 3
Posted 16 Sep, 2020
No comments provided
Reviewers invited
Invitations sent on 18 Sep, 2020
Reviewer #1 agreed
On 18 Sep, 2020
Review #1 received
Received 18 Sep, 2020
Editorial decision: Minor Revision
On 18 Sep, 2020
Editor assigned
On 15 Sep, 2020
Submission checks complete
On 14 Sep, 2020
Editor invited
On 14 Sep, 2020
No comments provided
Review #1 received
Received 05 Sep, 2020
Editorial decision: Minor Revision
On 05 Sep, 2020
Reviewers invited
Invitations sent on 04 Sep, 2020
Reviewer #1 agreed
On 04 Sep, 2020
Editor assigned
On 03 Sep, 2020
Submission checks complete
On 02 Sep, 2020
Editor invited
On 02 Sep, 2020
No comments provided
Review #2 received
Received 27 Jul, 2020
Editorial decision: Major Revision
On 27 Jul, 2020
Reviewer #1 agreed
On 29 Jun, 2020
Reviewer #2 agreed
On 29 Jun, 2020
Review #1 received
Received 29 Jun, 2020
Editor assigned
On 28 Jun, 2020
Reviewers invited
Invitations sent on 28 Jun, 2020
Submission checks complete
On 27 Jun, 2020
Editor invited
On 27 Jun, 2020
First submitted
On 15 Jun, 2020
Metrics
Comments: 0
PDF Downloads: ...
HTML Views: ...
Subject Areas
Environmental Economics
Learn more about our company.
A new preprint design is coming!
We have improved readability, clarity, accessibility, and opportunities for engagement.
See the published version of this preprint at Environmental Systems Research.
This is a preprint, 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
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: Published
View the published article at Environmental Systems Research.
Community comments: 1
Editorial decision: Accept
On 27 Sep, 2020
Editor assigned
On 26 Sep, 2020
Submission checks complete
On 25 Sep, 2020
Editor invited
On 25 Sep, 2020
Version 3
Posted 16 Sep, 2020
No comments provided
Reviewers invited
Invitations sent on 18 Sep, 2020
Reviewer #1 agreed
On 18 Sep, 2020
Review #1 received
Received 18 Sep, 2020
Editorial decision: Minor Revision
On 18 Sep, 2020
Editor assigned
On 15 Sep, 2020
Submission checks complete
On 14 Sep, 2020
Editor invited
On 14 Sep, 2020
No comments provided
Review #1 received
Received 05 Sep, 2020
Editorial decision: Minor Revision
On 05 Sep, 2020
Reviewers invited
Invitations sent on 04 Sep, 2020
Reviewer #1 agreed
On 04 Sep, 2020
Editor assigned
On 03 Sep, 2020
Submission checks complete
On 02 Sep, 2020
Editor invited
On 02 Sep, 2020
No comments provided
Review #2 received
Received 27 Jul, 2020
Editorial decision: Major Revision
On 27 Jul, 2020
Reviewer #1 agreed
On 29 Jun, 2020
Reviewer #2 agreed
On 29 Jun, 2020
Review #1 received
Received 29 Jun, 2020
Editor assigned
On 28 Jun, 2020
Reviewers invited
Invitations sent on 28 Jun, 2020
Submission checks complete
On 27 Jun, 2020
Editor invited
On 27 Jun, 2020
First submitted
On 15 Jun, 2020
Metrics
Comments: 0
PDF Downloads: ...
HTML Views: ...
Subject Areas
Environmental Economics
License:
This work is licensed under a CC BY 4.0 License. Read Full License
View the published article at Environmental Systems Research.
Background: The release of hazardous synthetic dyes into industrial effluents has emerged as an environmental problem requiring remediation. The present study focused on the preparation of a new and environmentally-friendly material (adsorbent) for the remediation of hazardous dyes from aqueous solution. The low cost adsorbent was prepared from locally available khat (Catha edulis) stem which considered as waste and accumulated on waste disposal areas of Woldia town, Ethiopia. Comprehensive characterization studies were carried out on the bio-adsorbent such as proximate analyses, specific surface area, point of zero charge and FT-IR analysis.
Results: The proximate analysis shows the prepared adsorbent has very high fixed carbon content (83.65%), which refers to high quality of the adsorbent. The adsorption performance of the prepared activated carbon was optimized by varying operational parameters such as initial dye concentration (10 mg/L), pH (10), dosage (0.5 g), and contact time (60 min). The maximum removal efficiency of the prepared adsorbent at those optimum conditions was 98.8%. The experimental data was tested by most common kinetics and isotherm models. It was observed that the pseudo-second-order kinetic model fits better with good correlation coefficient and the equilibrium data fitted well with the Freundlich isotherm model.
Conclusion: In summery this study demonstrated that the waste bio sorbent could be employed as an effective and eco-friendly alternative for the cleanup of dye-polluted aqueous system.
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6
Figure 7
Figure 8
Figure 9
Figure 10
Figure 11
Figure 12
Figure 13
The full text of this article is available to read as a PDF.
Loading...