Enhancement of CO2 Absorption Process Using High-Frequency Ultrasonic Waves
, Siti Munirah Mhd Yusof 1, Nurulhuda Azmi 1, Shahidah Zakariya 1 and Umar Patthi 3Round 1
Reviewer 1 Report
The following comments are to be considered by the authors while preparing the revised manuscript:
1. Abstract of the paper is to be made concise by removing redundant sentences and presenting within the word limit of 150 - 200 words. At present, it looks like an abstract of thesis or report and and to be revised as per the journal format.
2. The reviewer feels that the depth of introduction section is to be improved significantly. A number of recent papers related to topic is missed and to be added to the revised submission. This is a major set back for the revised paper.
3. Please clarify the need for Figure 1 in the introduction section as it is taken and used from another source. If the figure is to be retained, I suggest re-creating the same.
4. Please clarify the rationale behind the selection of materials described in section 2.1
5. The calculation of gas -liquid mass transfer coefficient is to be better elaborated for the benefit of readers.
6. Significance of Figures 9-12 are to be better explained.
7. Conclusions also require a careful re-writing to remove the redundant data and present only important findings from the present work. At present, the conclusion section of the paper sounds like a mere summary. Hence, it is suggested to improve the conclusion portion by representing the qualitative findings related to the work.
The paper contains a lot of grammatical errors and sentence revisions. The authors should avoid forming "compound sentences" as it will be difficult for the readers to understand the findings. Hence, they are to be re-phrased in to simple sentences. Moreover, the entire paper is to be thoroughly checked and all the grammatical errors are to be rectified in the revised submission.
Author Response
Please see the attachment.
Author Response File: 
Author Response.pdf
Reviewer 2 Report
The paper titled "Intensification of Continuous CO2 Absorption Process Using 2 High Frequency Ultrasonic Irradiation" is showing a good trial in carbon capture techniques.
1- The title can be shortened and can be briefly addressed better than the current title.
2- The abstract needs to be shortened as well.
3- It is recommended to move the equation and given figure in the introduction section to the following section " Materials and Methods".
4- The author in fig2 gives a schematic diagram of the ultrasonic-assisted pilot test rig, but it is better to give a real image alongside the schematic one.
5- The author must mention the limitations and challenges of this work as well in the conclusion section.
There are some typo errors and writing mistakes, the author needs to do some proof for the English language.
Author Response
Please see the attachment.
Author Response File: Author Response.pdf
Reviewer 3 Report
I have reviewed the manuscript numbered 2420962. The paper falls within the scope of the journal and is an excellent contribution. I believe the paper can be accepted for publication provided that the following minor comments are addressed.
1) The determination of KGa involves a number of variables (eq. 15). Was there any sensitivity analysis performed to ensure that there are no excess variables?
2) The terms A, B, or C are not aesthetically correct. May I suggest using some established abbreviations, for example, P for ultrasonic power instead of C, in equations 14, 15, and others?
3) The self-citation rate is too high. I would suggest including only those self-citations which are relevant and necessary.
4) The last author Shahidah Zakariya is missing an affiliation.
5) Could you please consider adding a few recent and relevant references (2022-23)?
Best of luck with your corrections!
There are a few grammatical errors, especially in the use of articles (a, the). Would suggest a good re-read to edit them.
Author Response
Please see the attachment.
Author Response File: Author Response.pdf
Round 2
Reviewer 1 Report
Comments were addressed in the revised version of the paper.
