A review on recovery of extracellular biopolymers from flocculent and granular activated sludges

Cognition, key influencing factors, applications, and challenges

Review (2022)

Authors

Xingyu Chen University of Tsukuba
Yu Jen Lee National Taiwan University
Tian Yuan University of Tsukuba
Zhongfang Lei University of Tsukuba
Yasuhisa Adachi University of Tsukuba
Zhenya Zhang University of Tsukuba
Y. Lin BT/Environmental Biotechnology - AS
M. C M Loosdrecht BT/Environmental Biotechnology - AS
Research Group
BT/Environmental Biotechnology (AS) (TU Delft)
Copyright: © 2022 Xingyu Chen, Yu Jen Lee, Tian Yuan, Zhongfang Lei, Yasuhisa Adachi, Zhenya Zhang, Y. Lin, Mark C.M. van Loosdrecht
DOI: https://doi.org/10.1016/j.biortech.2022.127854
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Published Date

2022

Language

English

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Faculty

Applied Sciences

Department

BT/Biotechnologie

Research Group

BT/Environmental Biotechnology

Abstract

A reasonable recovery of excess sludge may shift the waste into wealth. Recently an increasing attention has been paid to the recycling of extracellular biopolymers from conventional and advanced biological wastewater treatment systems such as flocculent activated sludge (AS), bacterial aerobic granular sludge (AGS), and algal-bacterial AGS processes. This review provides the first overview of current research developments and future directions in the recovery and utilization of high value-added biopolymers from the three types of sludge. It details the discussion on the recent evolvement of cognition or updated knowledge on functional extracellular biopolymers, as well as a comprehensive summary of the operating conditions and wastewater parameters influencing the yield, quality, and functionality of alginate-like exopolymer (ALE). In addition, recent attempts for potential practical applications of extracellular biopolymers are discussed, suggesting research priorities for overcoming identification challenges and future prospects.

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