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Updated: Mar 17, 2026
A Novel Bioreactor for High Density Cultivation of Diverse Microbial Communities
Published on: December 25, 2015
Effects of Organic-Loading-Rate Reduction on Sludge Biomass and Microbial Community in a Deteriorated Pilot-Scale
Yuya Sato1, Tomoyuki Hori, Ronald R Navarro
1Environmental Management Research Institute, National Institute of Advanced Industrial Science and Technology (AIST).
Abstract:
The effects of a precipitous decrease in the inlet organic loading rate on sludge reductions and the microbial community in a membrane bioreactor were investigated. The sludge biomass was markedly reduced to 47.4% of the initial concentration (approximately 15,000 mg L(-1)) within 7 d after the organic loading rate was decreased by half (450 to 225 mg chemical oxygen demand L(-1) d(-1)). An analysis of the microbial community structure using high-throughput sequencing revealed an increase in the abundance of facultative predatory bacteria-related operational taxonomic units as well as microorganisms tolerant to environmental stress belonging to the classes Deinococci and Betaproteobacteria.
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