The Potential Roles of Free and Attached Microbial Community in Decreasing Cadmium Level from Cadmium-Contaminated Soils by Mixotrophic Acidophiles of Different Scale-Up Cultivation Stages

In this study, cadmium (Cd)-contaminated soils were bioremediated using the mixotrophic acidophiles in different scale-up cultivation stages. The free and attached bacterial fungal diversities community structures, their effects on soil Cd removal investigated. Percentages of dominant bacteria (Acidithiobacillus, Sulfobacillus, Pseudomonas) fungi (Acidomyces Coniochaeta) between communities exhibited pronounced differences. α-diversity was higher than bacteria, while distinct variations not observed. However, β-diversity significantly changed. Solution pH reduced glucose level affected abundance patterns Acidithiobacillus Acidomyces fungi, which had great contributions to efficiency.