Progress of Bio-Calcium Carbonate Waste Eggshell and Seashell Fillers in Polymer Composites: A Review

Round 1

Reviewer 1 Report

• The paper provides a very good summary of the shell polymer composites with some challenges and future directions. This would add value to advance the research in this area.
• English needs some improvement. I have made some suggestions in the attached manuscript
• Line 31-add more references
• Section 2 title does not quite reflect the content. I suggest changing this with Composition and sources of egg and sea shells. You can come up with another suitable one.
• If you have adapted figure 1 from any reference you should mention here
• Figure 2-please put the name of the countries beside each section with arrows as it is difficult for readers particularly for colour blind people
• Line 665-This section can be further improved with additional challenges and future directions of research

Comments for author File: Comments.pdf

Author Response

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Author Response File: Author Response.docx

Reviewer 2 Report

Line 34-35 : Could you name (if exists in the literature ) the name of potential diseases causing possible invasion of potential diseases?

 

Table 1,decimal comas for the line of Turkey are not correct. Moreover, CaCO3 amount in the third column of the Table 1 is given in kg. Should not be in gram?

 

In the paragraph starts with line 160, number of the eggs in china is 1000 times greater than that in Table1. I recommend you to check the scientific designation of the numbers in Table 1.

 

Giving an image classifying the different types of shells (cockle, mussel, oyster, etc) could have been better.

 

Line 220 determined (typing mistake)

 

Results presented between line 350-380 could have been summarized also in a table.

Author Response

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Author Response File: Author Response.docx