Biogas slurry treatment and biogas upgrading by microalgae-based systems under the induction of different phytohormones

被引：0
|
作者：
Wang, Zhengfang [1 ]
Wang, QiaoLi [3 ]
Lu, Bei [4 ]
Zhao, Chunzhi [5 ]
Chai, Wenbo [1 ]
Huang, Zijuan [1 ]
Li, PeiYing [1 ]
Zhao, Yongjun [2 ]
机构：
[1] Suzhou Institute of Trade & Commerce, Suzhou,215009, China
[2] School of engineering, Hangzhou Normal University, Hangzhou,311121, China
[3] Bureau of Hydrology, Changjiang Water Resources Commission, Wuhan,430000, China
[4] School of Ecological Technology & Engineering, Shanghai Institute of Technology, Shanghai,201400, China
[5] Department of Environmental Science and Engineering, Fudan University, Shanghai,200433, China
来源：
Bioresource Technology | 2024年 / 414卷
基金：
中国国家自然科学基金;
关键词：
The low grade of biogas and the difficulty of treating biogas slurry are the two major bottlenecks limiting the sustainable development of the fermentation engineering. This study investigates the potential role of microalgae-microbial symbiosis and phytohormones in solving this challenge. Chlorella microalgae were combined with endophytic bacteria (S395-2) and Clonostachys fungus to construct symbiotic systems. Growth; photosynthetic activity; and carbon dioxide and pollutant removal out of biogas slurry and biogas were analyzed under treatment with three different phytohormones (cytokinin; synthetic strigolactones (GR24); natural strigolactones). The Chlorella-S395-2-Clonostachys symbiont achieved the highest purification efficiency under GR24 induction; with removal efficiency exceeding 86% for chemical oxygen demand; total phosphorous; and total nitrogen; as well as over 76% for CO2. Economic efficiency can be increased by about 150%. The positive correlation between treatment effectiveness and co-culture performance suggests a promising avenue for developing symbiotic systems for biogas slurry treatment and biogas upgrading. © 2024 Elsevier Ltd;
D O I：
10.1016/j.biortech.2024.131569
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