Microbial population shift caused by sulfamethoxazole in engineered-Soil Aquifer Treatment (e-SAT) system.

摘要: The engineered-Soil Aquifer Treatment (e-SAT) system was exploited for the biological degradation of Sulfamethoxazole (SMX) which is known to bio-accumulate in environment. fate SMX soil column studied through laboratory simulation a period 90 days. About 20 ppm concentration could be removed four consecutive cycles e-SAT. To understand microbial community change and e-SAT system, metagenomic analysis performed samples before (A-EBD) after exposure (B-EBD) Four bacterial phyla were found present both samples, with sample B-EBD showing increased abundance Actinobacteria, Bacteroidetes, Firmicutes decreased Proteobacterial compared A-EBD. unclassified bacteria abundant At class level, classes such as Bacilli, Negativicutes, Deltaproteobacteria, Bacteroidia emerged owing treatment, while Burkholderiales Nitrosomonadales appeared dominant at order level treatment. Furthermore, response family Nitrosomonadaceae dominant. Pseudomonas most dominating genus A-EBD whereas Cupriavidus dominated B-EBD. Additionally, sulfur oxidizing enriched sample, signifying efficient electron transfer hence organic molecule system. Results this study offer new insights into understanding shift during biodegradation SMX.