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Article
Peer-Review Record

Implementation of a Sulfide–Air Fuel Cell Coupled to a Sulfate-Reducing Biocathode for Elemental Sulfur Recovery

Int. J. Environ. Res. Public Health 2021, 18(11), 5571; https://doi.org/10.3390/ijerph18115571
by Enric Blázquez 1,*, David Gabriel 1, Juan Antonio Baeza 1, Albert Guisasola 1, Pablo Ledezma 2 and Stefano Freguia 2,†
Reviewer 1: Anonymous
Reviewer 2: Anonymous
Int. J. Environ. Res. Public Health 2021, 18(11), 5571; https://doi.org/10.3390/ijerph18115571
Submission received: 18 March 2021 / Revised: 12 May 2021 / Accepted: 19 May 2021 / Published: 23 May 2021

Round 1

Reviewer 1 Report

This paper deals with a novel and flexible bio-electrochemical systems (BES) for treating several types of wastewaters and recovering valuable products concomitantly by coagulants thatcombine bio-electrochemical sulfate reduction. The sulfate was removed from processes of synthetic wastewater with high sulfate content via the BES-FC were investigated by several characterization techniques. The studies were quite systematic and the resulted were well organized by the authors. I’d like to recommend the publication of this paper in International Journal of Environmental Research and Public Health after revision.

  1. The author should explain why pH value should be kept at 7.0 and 7.5 in the operational conditions.
  2. The author should provide the durability of bioelectrochemical systems- sulfide-air fuel cell by using the same anode and cathode. In addition, the condition of anode and cathode should be observed by using XRD and FE-SEM/EDX.
  3. The author should explain whether the intermediate product form in the process.
  4. The author should provide more details of the mechanism in reactions of processes

Author Response

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Author Response File: Author Response.docx

Reviewer 2 Report

All the comments are in the document attached.

Comments for author File: Comments.pdf

Author Response

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Author Response File: Author Response.docx

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