Simultaneous recovery of phosphorus and alginate-like exopolysaccharides from two types of aerobic granular sludge

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

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Author(s)

  • Xingyu Chen
  • Jixiang Wang
  • Qian Wang
  • Tian Yuan
  • Zhongfang Lei
  • Zhenya Zhang
  • Kazuya Shimizu

Related Research Unit(s)

Detail(s)

Original languageEnglish
Article number126411
Journal / PublicationBioresource Technology
Volume346
Online published25 Nov 2021
Publication statusPublished - Feb 2022

Abstract

Wastewater treatment plants are expected to realize not only pollutants removal from wastewater but also resources recovery such as phosphorus (P) and alginate-like exopolysaccharides (ALE) from the produced sludge. In this study, ALE extraction and fractionation from the same activated sludge-derived bacterial aerobic granular sludge (AGS) and algal-bacterial AGS were performed in addition to P fate examination during ALE recovery. Results showed that the ALE content recovered from algal-bacterial AGS was 8.81 ± 0.02 mg/g-volatile suspended solids (VSS), about 2.8 times higher than that from bacterial AGS when fed with the same synthetic wastewater. Moreover, the mannuronic acid to guluronic acid (MG) blocks accounted for the largest proportion of ALE from the two granular sludges. In particular, the extracellular polymeric substances (EPS) extracted from bacterial and algal-bacterial AGS contained about 25.10 ± 1.85 and 19.53 ± 0.04 mg-P/g-SS, respectively, and both granular sludges possessed high P bioavailability of 97–99%.

Research Area(s)

  • Algal-bacterial aerobic granular sludge, Alginate-like exopolysaccharides, Extracellular polymeric substances, Phosphorus accumulation, Resource recovery

Citation Format(s)

Simultaneous recovery of phosphorus and alginate-like exopolysaccharides from two types of aerobic granular sludge. / Chen, Xingyu; Wang, Jixiang; Wang, Qian; Yuan, Tian; Lei, Zhongfang; Zhang, Zhenya; Shimizu, Kazuya; Lee, Duu-Jong.

In: Bioresource Technology, Vol. 346, 126411, 02.2022.

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