The authors were investigated the dye removal by modified activated carbon. The authors were designed the work systematic way with performing some valuable experimental works accordingly. It is also necessary to critically evaluate new data and do not make hasty conclusions which may lead to misinterpretations. The authors were indicated such points for readers understanding.

-Title should be precise and reflecting the contents and this was nice title indeed.

-No need to mention the abbreviation in the abstract unless it is reused. The authors were followed.

-Abstract should be written to summarize the work; the abstract should state briefly the purpose of the research, the principal results and major conclusions. An abstract is often presented separately from the article, so it must be able to stand alone. The authors were followed.

-The introduction should be clarified in term of uniqueness and advantage what is the novelty of this work over the previous related work. There are many long sentences should be refined. The authors were followed these for readers understanding.

-The Introduction should be focused and goes over the topic. The authors were indicated such points in this section.

-There are many studies reported in the literature regarding the diverse substance and components recovery as defined. Based on this, do the authors think that the present process is an improvement when compared to other reported method? If so, please provide some discussions on the advantage and disadvantage as the novelty in the Introduction section. And the authors should highlight the scientific value of the present work with citing high impact journals. The authors were done the great job.

-Result and discussion section must explain with more experimental findings, such as experimental results, significance of work, finding of results and choice of materials.

-How did you confirm no hazardous components existed in your method; Please prove it….