Li ZWang JChen XLei ZYuan TShimizu KZhang ZDUU-JONG LEE2022-11-162022-11-16202209608524https://www.scopus.com/inward/record.uri?eid=2-s2.0-85127529299&doi=10.1016%2fj.biortech.2022.127104&partnerID=40&md5=5c3906b90e8e5cc11146c91f1176503chttps://scholars.lib.ntu.edu.tw/handle/123456789/625422This study aimed to figure out the main contributors to aerobic phosphorus (P) removal in the algal-bacterial aerobic granular sludge (AGS)-based wastewater treatment system. Kinetics study showed that aerobic P removal was controlled by macropore (contributing to 64–75% P removal) and micropore diffusion, and the different light intensity (0, 4.0, 12.3, and 24.4 klux) didn't exert significant (p > 0.05) influence on P removal. On the other hand, the increasing light intensity did promote microalgae metabolism, leading to the elevated wastewater pH (8.0–9.8). The resultant pH increase had a strongly negative relationship (R2 = 0.9723) with P uptake by polyphosphate-accumulating organisms, while promoted chemical Ca-P precipitation at a molar Ca/P ratio of 1.05. Results from this work could provide an in-depth understanding of microalgae-bacteria symbiotic interaction, which is helpful to better design and operate the algal-bacterial AGS systems. © 2022 Elsevier LtdAlgal-bacterial aerobic granular sludge; Biological phosphorus removal; Calcium phosphate precipitation; Polyphosphate-accumulating organisms; Rate-controlling process[SDGs]SDG6[SDGs]SDG14Algae; Biological water treatment; Calcium phosphate; Granular materials; Molar ratio; Precipitation (chemical); Wastewater treatment; Aerobic granular sludges; Algal-bacterial aerobic granular sludge; Biological phosphorus removal]; Calcium phosphate precipitation; Granular sludge systems; Light intensity; P removal; Phosphorus removal; Polyphosphate-accumulating organisms; Rate-controlling process; Bacteria; cakcium; phosphorus; unclassified drug; nitrogen; phosphorus; concentration (composition); light intensity; macropore; pollutant removal; precipitation (chemistry); wastewater; wastewater treatment; wastewater treatment plant; aerobic granular sludge; algal bacterial aerobic granular sludge; algal growth; Article; diffusion; heavy metal removal; light intensity; microalga; pH; polyphosphate accumulating organism; precipitation; waste water management; aerobic metabolism; bacterium; bioreactor; metabolism; microalga; microbiology; sewage; wastewater; Aerobiosis; Bacteria; Bioreactors; Microalgae; Nitrogen; Phosphorus; Sewage; Waste Disposal, Fluid; Waste Waterjournal article10.1016/j.biortech.2022.127104353782842-s2.0-85127529299