title: Ca2+ augmentation for enhancement of aerobically grown microbial granules in sludge blanket reactors.
abstract: 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.
authors.affiliation: Environmental Engineering Research Centre, School of Civil and Environmental Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798.
authors.forename: He-Long
authors.initials: HL
authors.lastname: Jiang
authors.forename: Joo-Hwa
authors.initials: JH
authors.lastname: Tay
authors.forename: Yu
authors.initials: Y
authors.lastname: Liu
authors.forename: Stephen Tiong-Lee
authors.initials: ST
authors.lastname: Tay
mesh_terms: D000332:Aerobiosis; D001420:Bacteria, Aerobic / Q000166:cytology / Q000187:drug effects* / Q000502:physiology* / Q000648:ultrastructure; D001422:Bacterial Adhesion / Q000187:drug effects / Q000502:physiology; D018533:Biomass; D019149:Bioreactors / Q000382:microbiology*; D002118:Calcium / Q000494:pharmacology*; D002452:Cell Count; D002455:Cell Division / Q000187:drug effects / Q000502:physiology; D012722:Sewage / Q000382:microbiology*
chemical_list: D012722:Sewage; D002118:Calcium