Journal
BIOTECHNOLOGY LETTERS
Volume 25, Issue 2, Pages 95-99Publisher
KLUWER ACADEMIC PUBL
DOI: 10.1023/A:1021967914544
Keywords
aerobic granulation; calcium augmentation; extracellular polymers; granules
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Two sequential aerobic sludge blanket reactors were concurrently operated to examine the effect of Ca2+ augmentation on aerobic granulation. Augmentation with 100 mg Ca2+ l(-1) significantly decreased the time to cultivate aerobically grown microbial granules from 32 d to 16 d. Ca2+-fed granules were denser and more compact, showed better settling and strength characteristics, and had higher polysaccharide contents.
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