Mixotrophic cultivation of microalgae coupled with anaerobic hydrolysis for sustainable treatment of municipal wastewater in a hybrid system of anaerobic membrane bioreactor and membrane photobioreactor
| Autor: | Qiao-Ling Zhao, Jun-Zhi Liu, Zi-Yan Yang, Ya-Ming Ge, Mei Liu, Dong-Zhi Chen, Feng Gao, Jin-Sheng Yang, Jian-Meng Chen, Chen Li |
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| Rok vydání: | 2021 |
| Předmět: |
0106 biological sciences
Environmental Engineering Photobioreactor chemistry.chemical_element Bioengineering Chlorella Wastewater 010501 environmental sciences 01 natural sciences Photobioreactors Hydrolysis 010608 biotechnology Microalgae Chlorella pyrenoidosa Anaerobiosis Biomass Waste Management and Disposal 0105 earth and related environmental sciences biology Renewable Energy Sustainability and the Environment Chemistry General Medicine biology.organism_classification Pulp and paper industry Membrane Carbon Anaerobic exercise Mixotroph |
| Zdroj: | Bioresource Technology. 337:125457 |
| ISSN: | 0960-8524 |
| Popis: | This study investigated the possibility of coupling anaerobic hydrolysis in an anaerobic membrane bioreactor (AnMBR) with mixotrophic microalgae cultivation in a membrane photobioreactor (MPBR) for the sustainable treatment of municipal wastewater. Using the hydrolyzed wastewater discharged from AnMBR, Chlorella pyrenoidosa in MPBR grew in a mixotrophic mode and realized rapid growth. During the stable operation, MPBR achieved average carbon capture rate of 42.82 mg L−1 d−1 and algal lipid production rate of 19.66 mg L−1 d−1. The average reduction in TN, TP, and TOC during stable operation was 96.7%, 98.0%, and 95.9%, respectively. Mass balance analysis showed that the overall system captured 14.76 mg of carbon from the atmosphere per liter of wastewater treated. Therefore, this AnMBR-MPBR hybrid system simultaneously realized advanced treatment of municipal wastewater, efficient production of algal lipid, and carbon capture from atmosphere, and thus has a good potential in the sustainable treatment of municipal wastewater. |
| Databáze: | OpenAIRE |
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