Removal mechanisms of phosphorus in non-aerated microalgal-bacterial granular sludge process
Microalgal-bacterial granular sludge processes are attracting increasing research interest in fields of biological municipal wastewater treatment. However, these processes currently suffer from inefficient phosphorus removal and long hydraulic reaction time. As such, a self-sustaining synergetic mic...
| Main Authors: | , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2022
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/161202 |
| _version_ | 1826119864080662528 |
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| author | Ji, Bin Zhang, Meng Wang, Li Wang, Shulian Liu, Yu |
| author2 | School of Civil and Environmental Engineering |
| author_facet | School of Civil and Environmental Engineering Ji, Bin Zhang, Meng Wang, Li Wang, Shulian Liu, Yu |
| author_sort | Ji, Bin |
| collection | NTU |
| description | Microalgal-bacterial granular sludge processes are attracting increasing research interest in fields of biological municipal wastewater treatment. However, these processes currently suffer from inefficient phosphorus removal and long hydraulic reaction time. As such, a self-sustaining synergetic microalgal-bacterial granular sludge process was explored for improving phosphorus removal. Results showed that about 86% of influent phosphorus could be removed within 6 h comprising 2-hr dark phase and 4-hr light phase. Slight phosphorus release was observed in dark phase, followed by a significant phosphorus uptake in light phase together with the accumulation of poly-phosphorus in microalgal cells. The analyses by PacBio's sequencing and fluorescence in situ hybridization revealed that microalgal genus of Pantanalinema were the major phosphorus-accumulating organisms. Based on these experimental observations, the removal mechanisms of phosphorus by microalgal-bacterial granular sludge process were identified. It is expected that this study may shed lights on the pathways of biological phosphorus removal in microalgal-bacterial granular sludge process. |
| first_indexed | 2024-10-01T05:07:05Z |
| format | Journal Article |
| id | ntu-10356/161202 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T05:07:05Z |
| publishDate | 2022 |
| record_format | dspace |
| spelling | ntu-10356/1612022022-08-19T04:52:46Z Removal mechanisms of phosphorus in non-aerated microalgal-bacterial granular sludge process Ji, Bin Zhang, Meng Wang, Li Wang, Shulian Liu, Yu School of Civil and Environmental Engineering Nanyang Environment and Water Research Institute Engineering::Environmental engineering Microalgal-Bacterial Granules Phosphorus Removal Microalgal-bacterial granular sludge processes are attracting increasing research interest in fields of biological municipal wastewater treatment. However, these processes currently suffer from inefficient phosphorus removal and long hydraulic reaction time. As such, a self-sustaining synergetic microalgal-bacterial granular sludge process was explored for improving phosphorus removal. Results showed that about 86% of influent phosphorus could be removed within 6 h comprising 2-hr dark phase and 4-hr light phase. Slight phosphorus release was observed in dark phase, followed by a significant phosphorus uptake in light phase together with the accumulation of poly-phosphorus in microalgal cells. The analyses by PacBio's sequencing and fluorescence in situ hybridization revealed that microalgal genus of Pantanalinema were the major phosphorus-accumulating organisms. Based on these experimental observations, the removal mechanisms of phosphorus by microalgal-bacterial granular sludge process were identified. It is expected that this study may shed lights on the pathways of biological phosphorus removal in microalgal-bacterial granular sludge process. Bin Ji is grateful to the supports from the National Natural Science Foundation of China (51808416) and the China Scholarship Council (CSC) (No. [2018] 10006). 2022-08-19T04:52:46Z 2022-08-19T04:52:46Z 2020 Journal Article Ji, B., Zhang, M., Wang, L., Wang, S. & Liu, Y. (2020). Removal mechanisms of phosphorus in non-aerated microalgal-bacterial granular sludge process. Bioresource Technology, 312, 123531-. https://dx.doi.org/10.1016/j.biortech.2020.123531 0960-8524 https://hdl.handle.net/10356/161202 10.1016/j.biortech.2020.123531 32446034 2-s2.0-85084814438 312 123531 en Bioresource Technology © 2020 Elsevier Ltd. All rights reserved. |
| spellingShingle | Engineering::Environmental engineering Microalgal-Bacterial Granules Phosphorus Removal Ji, Bin Zhang, Meng Wang, Li Wang, Shulian Liu, Yu Removal mechanisms of phosphorus in non-aerated microalgal-bacterial granular sludge process |
| title | Removal mechanisms of phosphorus in non-aerated microalgal-bacterial granular sludge process |
| title_full | Removal mechanisms of phosphorus in non-aerated microalgal-bacterial granular sludge process |
| title_fullStr | Removal mechanisms of phosphorus in non-aerated microalgal-bacterial granular sludge process |
| title_full_unstemmed | Removal mechanisms of phosphorus in non-aerated microalgal-bacterial granular sludge process |
| title_short | Removal mechanisms of phosphorus in non-aerated microalgal-bacterial granular sludge process |
| title_sort | removal mechanisms of phosphorus in non aerated microalgal bacterial granular sludge process |
| topic | Engineering::Environmental engineering Microalgal-Bacterial Granules Phosphorus Removal |
| url | https://hdl.handle.net/10356/161202 |
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