Fig. 6From: Partial nitritation of stored source-separated urine by granular activated sludge in a sequencing batch reactorMicrobial community composition of the activated sludge in SBR, according to a high throughput sequencing data. The inner pie chart shows the community composition at the phylum level, while the outer pie chart shows the community composition at the genus level for the phylum Proteobacteria. Relative abundance was calculated only considering those microorganisms in which the number of reads higher than 0.5% of the total readsBack to article page