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A Novel Bioreactor for High Density Cultivation of Diverse Microbial Communities
Published on: December 25, 2015
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Constructed microalgal-bacterial symbiotic (MBS) system: Classification, performance, partnerships and perspectives
Hong Wang1, Liangwei Deng2, Zhiyong Qi1
1Institute of Urban Agriculture, Chinese Academy of Agricultural Sciences, Chengdu 610213, China; Chengdu National Agricultural Science and Technology Center, Chengdu 610213, China.
The Science of the Total Environment
|September 16, 2021
Summary
Microalgal-bacterial symbiotic (MBS) systems offer efficient wastewater treatment and nutrient recovery. The bioflocculated MBS system excels in microalgal biomass harvesting and application, paving the way for sustainable solutions.
Area of Science:
- Environmental Biotechnology
- Microbiology
- Wastewater Treatment
Background:
- Microalgal-bacterial symbiotic (MBS) systems integrate wastewater treatment and nutrient recovery.
- Three MBS patterns exist: free (FMB), attached (AMB), and bioflocculated (BMB).
Purpose of the Study:
- To review and categorize existing MBS systems.
- To elucidate the mechanisms and advantages of the bioflocculated MBS (BMB) system.
- To identify future research directions for BMB system optimization.
Main Methods:
- Literature review of reported MBS systems.
- Analysis of biofloc characteristics, extracellular polymeric substances (EPS), and influencing factors (microalgae/bacteria ratio, microalgal strains).
Main Results:
- The BMB system demonstrates superior microalgal biomass harvesting and application potential compared to FMB and AMB systems.
- Bioflocculation is influenced by biofloc characteristics, EPS properties, and the microalgae/bacteria ratio.
- Food processing wastewater is suitable for microalgal cultivation within BMB systems.
Conclusions:
- The BMB system is promising for sustainable wastewater treatment and resource recovery.
- Further research on microalgal-bacterial partnerships and optimizing BMB systems is crucial.
- Exogenous addition of functional bacteria can enhance nutrient removal and bioflocculation for large-scale BMB application.
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