生物量(生态学)
制浆造纸工业
细菌
污水处理
废水
环境科学
化学
食品科学
环境工程
生物
生态学
工程类
遗传学
作者
Xingyu Chen,Jinfei Mai,Xiaochuan Dong,Qian Wang,Zejiao Li,Tian Yuan,Zhongfang Lei,Zhenya Zhang,Kazuya Shimizu,Duu‐Jong Lee
标识
DOI:10.1016/j.biortech.2023.129155
摘要
Extracting alginate-like exopolymers (ALE) is a promising approach for valuable resources recovery from excess algal-bacterial aerobic granular sludge (AGS) to achieve circular bioeconomy and environmental sustainability in wastewater treatment plants (WWTPs). In this study, six batch cultivation tests were conducted to investigate the optimal cultivation duration or transport/storage period, light intensity, and temperature for algal-bacterial AGS after sampling and before further processing or ALE extraction. At a light intensity of 5 klux, the highest ALE content (36.33 mg/g-VSS) was detected at a low temperature of 10 °C, which increased by 300% from its original level after 6-h cultivation. Results from levofloxacin (LVX) exposure and dark condition imply that microalgae contributed more to ALE synthesis in the algal-bacterial granules. This work not only provides a better understanding of the mechanisms involved in ALE biosynthesis but also offers useful guidance for maintaining or improving ALE recovery after algal-bacterial biomass sampling.
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