Effects of iron-modified biochar microspheres on arsenic immobilization and microbial community structure in contaminated paddy soil
This study investigates the effects of biochar-based amendments, including biochar microspheres and iron-modified biochar microspheres, on arsenic immobilization and microbial community responses in arsenic-contaminated paddy soil. A pot experiment was conducted using five treatments: untreated contaminated soil (CK), biochar amendment (T1), biochar microspheres (T2), iron-modified biochar (T3), and iron-modified biochar microspheres (T4). Soil bacterial communities were characterized through 16S rRNA gene amplicon sequencing to evaluate changes in microbial diversity, community composition, and potential responses to amendment application. The generated sequencing data provide insights into the interactions between functional soil amendments and microbial communities during arsenic remediation.