Modified clays alter diversity and respiration profile of microorganisms in long-term hydrocarbon and metal co-contaminated soil.

ABSTRACT: Clays and surfactant-modified clays (organoclays) are becoming popular as pollutant sorbents due to their high reactivity and low-cost availability. However, the lack of field testing and data on ecotoxicity limits their application. Considering such aspects, this study assessed the impact of clay amendments to polycyclic aromatic hydrocarbons (PAHs)/cadmium (Cd)-contaminated soil on microbial respiration profiles (active vs. inactive cells) using redox staining and the relative abundance and diversity of bacteria and archaea. These clay products are bentonite, cationic surfactant-modified bentonite and palmitic acid-grafted surfactant-modified bentonite). After 70 days, the addition of bentonite and its modified forms altered microbial community structure mainly among dominant groups (Act

SUBMITTER: Biswas B 

PROVIDER: S-EPMC7017831 | biostudies-literature | 2020 Mar

REPOSITORIES: biostudies-literature