Study on Preparation of Rabbit Manure Biochar and Activation of Peroxymonosulfate for Rhodamine B Degradation
Round 1
Reviewer 1 Report
This is an interesting manuscript, which studies the process and mechanism of Rhodamine B treatment by rabbit manure biochar activated persulfate. The research content is relatively innovative. It should be noted, however, that corrections in this manuscript are necessary for several items.
1、 In addition to the factors mentioned in the paper, are there other factors that may have a significant impact on the system's effect of degrading RhB, and how did the authors consider them when conducting this study?
2、 In general, the summary should not be too long. The abstract part of this article is a little long and the content is too rich, it is necessary to simplify and modify.
3、 Muffle furnace rather than tube furnace is used in the preparation process of biochar. Please add in section 2.2 how to control oxygen limits when using Muffle stoves.
4、 Advanced oxidation technology is a relatively mature pollutant treatment technology. How does the proposed system of treating Rhodamine B with rabbit manure biochar activated persulfate contribute to previous research on advanced oxidation techniques?
5、 Given the obtained results, please add your plans or prospects for future related research at the end of the article.
Author Response
Thank you very much for the reviewer's comments and reminder. We have replied the details of the modification as follows. Thank you again for your kind reminder.
Author Response File: 
Author Response.pdf
Reviewer 2 Report
Comments for author File: Comments.pdf
English must be generally improved. For instance, the term "removal rate" is not being correctly used.
Author Response
Thank you very much for the reviewer's comments and reminder. We have replied the details of the modification as follows. Thank you again for your kind reminder.
Author Response File: Author Response.pdf
Reviewer 3 Report
This manuscript cannot be published in this journal in the present form and serious major revisions are necessary.
1- How do the authors explain the presence of SiO2 peaks in XRD analyses? what is the origin of SiO2 in biochar
2- Please add the point of zero charge (PZC) for catalyst surface
3- The amount of PMS used is very large to degrade a concentration of RhB 50 mg/L which can cause pollution of the degraded solution by sulfate ions??
4- The form of RhB depends on the pH of the solution, it is necessary to provide the UV-Visible absorption spectra of RhB as a function of pH.
5- The authors should compare their results with other similar works for indicating the highlights and advantages of their works.
6- Please read the reference:
https://doi.org/10.1016/j.mtcomm.2023.105915
Author Response
Thank you very much for the reviewer's comments and reminder. We have replied the details of the modification as follows. Thank you again for your kind reminder.
Author Response File: Author Response.pdf
Reviewer 4 Report
Before any type of revision, the use of English must be greatly improved.
Before any type of revision, the use of English must be greatly improved.
Author Response
Thank you very much for the reviewer's comments and reminder. We have replied the details of the modification as follows. Thank you again for your kind reminder.
Author Response File: Author Response.pdf
Round 2
Reviewer 3 Report
In my opinion, a second revision of this work is necessary:
1- the SiO2 peak in XRD is very intense, which shows that silica is the majority in the biochar. The answer of the authors is insufficient, they did not justify the presence of SiO2 in biochar.
2- The concentration of SO42- used in this work is important, the authors do not think that 50mg/l of sulphate much to degrade 50mg/l of dye??
3- the authors are invited to give the absorbance spectra of RhB as a function of the pH of the solution
Author Response
Thank you very much for your new round of questions. We have replied the problems that can be solved, and explained the problems that cannot be solved temporarily. Thank you very much for your rigorous and sincere opinion.
Author Response File: Author Response.pdf
Round 3
Reviewer 3 Report
The revised version can be accepted for publication in this journal.
