Abstract
Long-term storage and successful reactivation after storage are essential for practical applications of aerobic granules on wastewater treatment. This study cultivated aerobic granules (SI) in sequencing batch reactors and then stored the granules at 4. °C in five liquid media (DI water (SW), acetone (SA), acetone/isoamyl acetate mix (SAA), saline water (SS), and formaldehyde (SF)) for over 1. year. The first four granules were then successfully reactivated in 24. h cultivation. The specific oxygen uptake rates (SOUR) of the granules followed SI. >. SS. >. SA. >. SAA. >. SW. >. SF; and the corresponding granular strengths (10. min ultrasound) followed SI. >. SA = SS. >. SAA. >. SW. >>. SF. During storage the granular cells secreted excess quantities of cyclic-diguanylate (c-di-GMP) and pentaphosphate (ppGpp) as responses to the stringent challenges. We proposed that to force cells in granules (Alphaproteobacteria, Flavobacteria, Betaproteobacteria, Gammaproteobacteria, Actinobacteria, Sphingobacteria, and Clostridia) entering viable but non-culturable (VBNC) status is the key of success for extended period storage of granules. © 2014 Elsevier Ltd.
| Original language | English |
|---|---|
| Pages (from-to) | 464-470 |
| Journal | Bioresource Technology |
| Volume | 166 |
| DOIs | |
| Publication status | Published - Aug 2014 |
| Externally published | Yes |
Bibliographical note
Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
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SDG 6 Clean Water and Sanitation
Research Keywords
- Aerobic granules
- High throughput sequencing
- Signaling molecules
- Storage
- Viable but non-culturable status
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