Effect of stepwise or one-time illumination strategy on the development of algal-bacterial aerobic granular sludge in sequencing batch reactor

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

3 Scopus Citations
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Author(s)

  • Jixiang Wang
  • Yanjun Wei
  • Zejiao Li
  • Xingyu Chen
  • Zhongfang Lei
  • Tian Yuan
  • Kazuya Shimizu
  • Zhenya Zhang
  • Sang-Hyoun Kim

Related Research Unit(s)

Detail(s)

Original languageEnglish
Article number100931
Journal / PublicationBioresource Technology Reports
Volume17
Online published19 Jan 2022
Publication statusPublished - Feb 2022

Abstract

Algal-bacterial aerobic granular sludge (AGS) as a promising wastewater treatment biotechnology has attracted more attention in recent years. Still, limited information is available on the effect of stepwise illumination on algal-bacterial AGS. In this study, two illumination strategies, i.e., stepwise (R1) and one-time (R2) daily, were applied to cultivate algal-bacterial AGS from bacterial AGS. Results indicated that R1 holds more advantages over R2 in terms of algal-bacterial AGS formation, biomass growth, extracellular polymeric substances excretion and phosphorus (P) accumulation. Specifically, algal-bacterial AGS in R1 contained higher chlorophyll a content of 5.84 mg/g-MLVSS with the biomass yield of 0.50 g-MLVSS/g-COD in comparison to 5.04 mg/g-MLVSS and 0.43 g-MLVSS/g-COD in R2. Moreover, stepwise illumination effectively alleviated the negative effects of microalgae on anaerobic P release and P accumulation. However, no significant difference was detected between R1 and R2 regarding granule diameter and morphology in addition to organics and nutrients removal.

Research Area(s)

  • Algal-bacterial granules, Bacterial aerobic granular sludge, Biomass yield, Extracellular polymeric substances, Stepwise illumination

Citation Format(s)

Effect of stepwise or one-time illumination strategy on the development of algal-bacterial aerobic granular sludge in sequencing batch reactor. / Wang, Jixiang; Wei, Yanjun; Li, Zejiao; Chen, Xingyu; Lei, Zhongfang; Yuan, Tian; Shimizu, Kazuya; Zhang, Zhenya; Kim, Sang-Hyoun; Lee, Duu-Jong.

In: Bioresource Technology Reports, Vol. 17, 100931, 02.2022.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review