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Volume 7
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10.3390/c7010027
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Article
Peer-Review Record

The Role of Surface Chemistry and Polyethylenimine Grafting in the Removal of Cr (VI) by Activated Carbons from Cashew Nut Shells

C 2021, 7(1), 27; https://0-doi-org.brum.beds.ac.uk/10.3390/c7010027
by Victoria A. Smith 1, Juster F. A. Rivera 1, Ruby Bello 1, Elena Rodríguez-Aguado 2, Mohammed R. Elshaer 1, Rebecca L. Wodzinski 1 and Svetlana Bashkova 1,*
Reviewer 1: Anonymous
Reviewer 2: Anonymous
Reviewer 3: Anonymous
C 2021, 7(1), 27; https://0-doi-org.brum.beds.ac.uk/10.3390/c7010027
Submission received: 12 February 2021 / Revised: 23 February 2021 / Accepted: 24 February 2021 / Published: 27 February 2021
(This article belongs to the Collection Carbon-Derived Materials from Bioresources for Advanced Applications)

Round 1

Reviewer 1 Report

  1. All Abbreviations should be removed from the title and also the abstract which contains so many short names. It loses the smooth flow of reading and understanding.
  2.  It is suggested to write PH and degree C in the proper way in the whole manuscript.
  3.  Keywords should be written in alphabetical order.
  4. The connection between lines 48 and 49 is not appropriate. In the 49 line, the author used the adsorption method directly. So, rewrite "removal with activated carbon" to the adsorption process like other methods mentioned before.
  5. Not only activated carbons derived from agricultural waste products provide an environmentally practical alternative, and a means of cutting costs while providing a solution for waste management but also ACs derived from other biomass waste such as WPT & M provide excellent porous and adsorption properties, the current benchmark. Authors should discuss and include the following articles https://0-doi-org.brum.beds.ac.uk/10.1016/j.apenergy.2020.114720 9 (Applied Energy, Volume 264, 15 April 2020, 114720); https://0-doi-org.brum.beds.ac.uk/10.1016/B978-0-12-803581-8.10832-X (Encyclopedia of Renewable and Sustainable Materials, Volume 4, 2020, Pages 617-628); https://0-doi-org.brum.beds.ac.uk/10.1016/B978-0-12-803581-8.11341-4 (Encyclopedia of Renewable and Sustainable Materials Volume 4, 2020, Pages 584-595).
  6. Grammatical errors, typos, and inconsistency of writing units, Cr(IV) or Cr (IV), etc are present in the whole manuscript. Authors should do proofread.
  7. All figure's axis title needs to be written elaborately for reader understanding, means figure will be self-explanatory.
  8. What are the porous properties of synthesized ACs? Porous properties and SEM images are needed to include in the manuscript.

Author Response

Please see the attachment 

Author Response File: Author Response.pdf

Reviewer 2 Report

The article is carefully written, of considerable scholarly value, thoroughly thought out, and the analyses conducted are well planned.

Author Response

Please see the attachment

Author Response File: Author Response.pdf

Reviewer 3 Report

Manuscript entitled “The role of surface chemistry and polyethylenimine (PEI) grafting in the removal of chromium (VI) by activated carbons from cashew nut shells” submitted by Victoria A. Smith, Juster F.A. Rivera, Ruby Bello, Elena Rodríguez-Aguado, Mohammed R. Elshaer, Rebecca L. Wodzinski, Svetlana Bashkova, can be accepted for publishing in the Journal of Carbon Research after a major revisions.

 

Here is a list of my specific comments:

  1. Page 1, Abstract: Abbreviations should be explained.
  2. Page 1, line 33: “The former one is found in many food…”. At the end of this paragraph, some references should be added.
  3. Page 2, line 68: “The work by S. Chen et al. [38] showed that…”. This paragraph should be deleted because it is irrelevant for this study.
  4. Page 3, line 118: “Direct spectrometry was chosen… and is commonly a source of error”. These paragraphs should be deleted because are irrelevant.
  5. Page 4, 3. Results and Discussion: This section should be reorganized. The interpretation of the experimental results obtained in adsorption studies should be detailed. In the same time, the observations related to the mechanism are too detailed and should be systematized.
  6. Page 4, line 176: “…by other researchers [14–15,18,20,22,24,27–30,33,38].”. Here are too many references.
  7. Page 5, line 216: “…in the removal of Cr(VI) [14–15,19,21,23,27–30,33–34,38,40].”. The same observation as above.
  8. Page 13, 4. Conclusions: This section is too long and should be systematized. Pay attention on the most important experimental results and finding to highlight the importance of this study.

Author Response

Please see the attachment 

Author Response File: Author Response.pdf

Round 2

Reviewer 3 Report

All my previous remarks and comments have been considered in this new version of the manuscript. In my opinion, the revised manuscript meets the criteria and can be published as original paper in Journal of Carbon Research.

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