Gas to Liquids Techno-Economics of Associated Natural Gas, Bio Gas, and Landfill Gas

Round 1

Reviewer 1 Report

Reviewed manuscript ID processes-1335307 entitled Gas to liquids techno economics of associated natural gas, biogas, and landfill gas

is very interesting and valuable. Authors were examined the techno economic analysis of a Micro Refinery Unit (MRU) that partial oxidizes methane-rich feedstocks and polymerizes the syngas formed via Fischer-Tropsch reaction. Manuscript fully correspond with Processes journal profile. Manuscript Is characterized by a correct structure, proper methodology, the results have been correctly presented, the conclusions are supported by the results. Below my suggestion to improve of manuscript are presented:

- Graphical abstract will be very useful for readers to better understanding of authors intention.

- Chapter acronyms and abbreviations should be added to the end of manuscript.

- scientific discussion should be expended for compared obtained results to works of other authors.

- remove citation from conclusion section.

- check the template is actual and correct.

Author Response

We thank the reviewer for the precious comments. Please see the attached file.

Author Response File: Author Response.docx

Reviewer 2 Report

The authors conducted the techno economic analysis of a Micro Refinery Unit
(MRU) that partial oxidizes methane-rich feedstocks and polymeryzes the syngas formed via Fischer-Tropsch reaction. The manuscript can be accepted after addressing the following comments:

1. The validation of natural gas oxidation must be provided to match the syngas composition in Figure 2.
2. The authors have used the air for POX of natural gas which increases the N2 content in the syngas that must be controlled for FT reactions. The authors should justify the usage of air instead of pure oxygen and what could be the technical issues that may arise during the production of FT chemicals.
3. The technical part of the manuscript is very small. The authors have developed the model in Aspen Plus but no technical results are presented. The impact of temperature and pressure may be studiedon the composition of syngas.
4. The literature part should be enriched with the Landfill gas and Biogas availability worldwide.
5. Figure 3, 4 and 6 misses the axis in x-y directions.

Author Response

We thank the reviewer for the precious comments. Please see the attached file.

Author Response File: Author Response.docx

Round 2

Reviewer 2 Report

All the comments have been addressed.