Biochar Influenced Microbial Community Succession and Metabolic Characteristic During the Dropping Crude Remediation

Abstract

This study determined the fluctuations of bacterial community structures in biochar biostimulation process with different types of nutrient amendments. Results showed that suitable amendment ratio of biochar and nutrients can greatly increase the remediation efficiency, biocharaddition influenced microbial community structure and metabolic characteristics of the remediation. Proteobacteria, Actinobacteria, and Fimicutes were the dominant phyla throughout the process, and biochar addition significantly increased the relative abundance of Firmicutes phylum. The detected abundance of bacterial genes related were also different, Amino acid transport and metabolism, Carbohydrate transport and metabolism were increased with biochar addition and had great influence on the bacterial community structure. These results indicated that biochar addition improved the degradation process meanwhile significantly regulated the microbial community and function. 1