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...

Full description

Saved in:
Bibliographic Details
Main Authors: Ji, Bin, Zhang, Meng, Wang, Li, Wang, Shulian, Liu, Yu
Other Authors: School of Civil and Environmental Engineering
Format: Article
Language:English
Published: 2022
Subjects:
Online Access:https://hdl.handle.net/10356/161202
Tags: Add Tag
No Tags, Be the first to tag this record!
Institution: Nanyang Technological University
Language: English
id sg-ntu-dr.10356-161202
record_format dspace
spelling sg-ntu-dr.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.
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Engineering::Environmental engineering
Microalgal-Bacterial Granules
Phosphorus Removal
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
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.
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
format Article
author Ji, Bin
Zhang, Meng
Wang, Li
Wang, Shulian
Liu, Yu
author_sort Ji, Bin
title 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_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_sort removal mechanisms of phosphorus in non-aerated microalgal-bacterial granular sludge process
publishDate 2022
url https://hdl.handle.net/10356/161202
_version_ 1743119525021220864