Diversity and Metabolic Potentials of As(III)-Oxidizing Bacteria in Activated Sludge
Rui Xu, Duanyi Huang, Xiaoxu Sun, Miaomiao Zhang, Dongbo Wang, Zhaohui Yang, Feng Jiang, Pin Gao, Baoqin Li, Weimin Sun
Abstract
AOB community inhabiting the activated sludges. In this study, the putative AOB responsible for As(III) oxidation in wastewater treatment facilities were identified, and their metabolic potentials, including As(III) oxidation, denitrification, carbon fixation, secondary metabolite biosynthesis, and extracellular polymeric substance metabolism, were investigated. This observation provides an understanding of anoxic and/or oxic AOB during the As(III) oxidation process in wastewater treatment facilities, which may contribute to the removal of As from contaminated water.
Topics & Concepts
Activated sludgeBacteriaAnoxic watersArseniteMicroorganismBiologyWastewaterBioreactorSewage treatmentStable-isotope probingMicrobiologyEnhanced biological phosphorus removalExtracellular polymeric substanceMicrobial metabolismMetaboliteEnvironmental chemistryChemistryMetabolic pathwayMicrobial population biologyMetagenomicsEnrichment cultureArsenicAlcaligenesDenitrifying bacteriaSequencing batch reactorBiodegradationNitrateMicroaerophileBiotransformationDenitrificationMetabolismBiochemistryExtracellularSegmented filamentous bacteriaGeneSewageBiomass (ecology)Food scienceWaste disposalEnergy sourceArsenic contamination and mitigationChromium effects and bioremediationMine drainage and remediation techniques