Abstract
Quorum Quenching (QQ) is a mechanism that prevents cell to cell communication and has recently used as an effective control method against biofouling in membrane bioreactors (MBRs). Rotary microbial carrier frame (RMCF) is an innovative application used in QQ-controlled MBRs that provides immobilization medium to QQ bacteria. However, it eventually caused to decrease in QQ activity as a result of a decline in the number of viable QQ cells in the immobilization media over time, especially during long-term MBR operations. In this study, the effect of regeneration of the QQ cells in the immobilization media on biofouling control in MBR was investigated. The growth kinetic of Rhodococcus sp. BH4 as model QQ bacteria was revealed and the bacteria regeneration time was obtained as 28.3 days. In the operation of the regenerated group, an additional QQ activity of 38.2% was achieved compared to control during a 14 day-duration of QQ-controlled MBR operation. It could be indicated that regenerated QQ bacteria reduced SMP and EPS by degrading the signal molecules, thus more efficient control of membrane fouling was achieved.
| Original language | English |
|---|---|
| Pages (from-to) | 77-84 |
| Number of pages | 8 |
| Journal | Turkish Journal of Engineering |
| Volume | 4 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 2020 |
Bibliographical note
Publisher Copyright:© 2020, Murat Yakar. All rights reserved.
Funding
TUBITAK (The Scientific and Technological Research Council of Turkey), and KORANET (the Korean Scientific Cooperation Network with the European Research Area) supported this work financially under project no 112M739. In addition, Tülay Ergön-Can thanks to TUBITAK 2218-National Postdoctoral Research Fellowship Program.
| Funders | Funder number |
|---|---|
| Türkiye Bilimsel ve Teknolojik Araştırma Kurumu | 112M739 |
Keywords
- Biofouling
- Membrane Processes
- Quorum Quenching
- Wastewater Treatment
