In the list of author surnames, an author name was incorrectly stated in the original print and online files. The correct list of author names for this article should appear as: Pineda Zapana, J.S., Arán, D.S., Bocardo, E.F. and Harguinteguy, C.A. In the affiliation (1) was incorrectly stated in the original print and online files. The correct affiliation (1) for this article should appear as: 1 Environmental Engineering School, Faculty of Process Engineering, Universidad Nacional de San Agustín de Arequipa (UNSA), Arequipa, Perú.
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