Microbial diversity and metabolic potential in long-term Cr(VI) polluted soil during in situ biostimulation: a pilot effective assay.

ABSTRACT: Excess industrial Cr(VI) waste and its improper disposal have resulted in the contamination of diverse environments, including soils and aquifers. To contend with high concentration of Cr(VI), a dangerous mutagen and oxidizing agent, diverse bacteria have developed a broad spectrum of metabolic strategies, mainly through chromate efflux pumps and reduction of Cr(VI) to Cr(III), which is less toxic and unable to cross biological membranes. In this study, we performed an in situ biostimulation assay in a highly alkaline and saline soil from a long-term contaminated site in Guanajuato, México. Four percent molasses was an effective treatment in promoting the Cr(VI) reduction by indigenous microorganisms. Initial Cr(VI) concentration was 5.6 to 12.4 g per kg of soil; After biostimulation assay

SUBMITTER: Flores-Gallegos FA 

PROVIDER: S-EPMC12425845 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature