Quorum quenching MBR operations for biofouling control under different operation conditions and using different immobilization media

Köse-Mutlu, Börte; Ergön-Can, Tülay; Koyuncu, İsmail; Lee, Chung‐Hak

doi:10.1080/19443994.2015.1086899

Cited by 19 publications

(25 citation statements)

References 28 publications

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“…BH4 suspension using a syringe. The RMCF was then set into the MBR similarly to a mechanical stirring device [51]. …”

Section: Methods For Entrapping Qq Bacteria In Mbrsmentioning

confidence: 99%

“…BH4-mediated QQ does not impair the MBR treatment capacities. For nine of the studies considered in Table 1 (references n° 5 to 13), this was assessed in terms of Chemical Oxygen Demand (COD) removal efficiencies and resulted in very negligible variations (less than a 3% modification compared to the control MBR) [25,27,50,51]. The fact that the COD removal efficiencies remained practically unchanged indicates that the use of Rhodococcus sp.…”

Section: Effect Of Bacterial Qq On the Mbr Performance At Macroscomentioning

confidence: 99%

“…The same approach was used to assess Total Kjeldahl Nitrogen (TKN) removal and resulted in less than a 5% variation compared to the control MBR, when the Rhodococcus sp. BH4 cells were entrapped in CEBs, microbial vessels or RMCF (data not shown) [51]. For Lee et al [26], neither the total nitrogen removal efficiency nor the ammonia-nitrogen (NH4-N) removal efficiency was significantly affected when Rhodococcus sp.…”

Section: Effect Of Bacterial Qq On the Mbr Performance At Macroscomentioning

confidence: 99%

“…A similar study has been reported using beads entrapping Rhodococcus sp. BH4 [51]. Two kinds of beads were prepared: with 1.5 mg BH4/cm 3 of bead volume (beads I) and with 7.5 mg BH4/cm 3 of bead volume (beads II).…”

Section: Effect Of the Operating Conditions On The Effectiveness mentioning

confidence: 99%

“…The three entrapping methods mentioned above (microbial vessels, beads and RMCF) were compared under the same operating conditions with the same quantity of Rhodococcus sp. BH4 [51] (references n° 10 to 12 in Table 1). After 1 day of operation, beads were found to be the most efficient, with a reduction of 90% in the TMP level (reference n° 10 in Table 1) and the microbial vessel was the least efficient to reduce biofouling (reference n° 11 Table 1).…”

Section: Effect Of the Operating Conditions On The Effectiveness mentioning

confidence: 99%

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Process-Oriented Review of Bacterial Quorum Quenching for Membrane Biofouling Mitigation in Membrane Bioreactors (MBRs)

et al. 2016

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Quorum Quenching (QQ) has been developed over the last few years to overcome practical issues related to membrane biofouling, which is currently the major difficulty thwarting the extensive development of membrane bioreactors (MBRs). QQ is the disruption of Quorum Sensing (QS), cell-to-cell communication enabling the bacteria to harmonize their behavior. The production of biofilm, which is recognized as a major part of the biocake formed on a membrane surface, and which leads to biofouling, has been found to be one of the bacterial behaviors controlled by QS. Since the enzymatic disruption of QS was reported to be efficient as a membrane biofouling mitigation technique in MBRs, the application of QQ to lab-scale MBRs has been the subject of much research using different approaches under different operating conditions. This paper gives an overview of the effectiveness of QQ in mitigating membrane biofouling in MBRs. It is based on the results of previous studies, using two microbial strains, Rhodococcus sp. BH4 and Pseudomonas sp. 1A1. The effect of bacterial QQ on the physical phenomena of the MBR process is analyzed, adopting an original multi-scale approach. Finally, the potential influence of the MBR operating conditions on QQ effectiveness is discussed.

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“…BH4 suspension using a syringe. The RMCF was then set into the MBR similarly to a mechanical stirring device [51]. …”

Section: Methods For Entrapping Qq Bacteria In Mbrsmentioning

confidence: 99%

Section: Effect Of Bacterial Qq On the Mbr Performance At Macroscomentioning

confidence: 99%

Section: Effect Of Bacterial Qq On the Mbr Performance At Macroscomentioning

confidence: 99%

Section: Effect Of the Operating Conditions On The Effectiveness mentioning

confidence: 99%

Section: Effect Of the Operating Conditions On The Effectiveness mentioning

confidence: 99%

See 3 more Smart Citations

Process-Oriented Review of Bacterial Quorum Quenching for Membrane Biofouling Mitigation in Membrane Bioreactors (MBRs)

et al. 2016

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Quorum Quenching for Biofouling Control in Membrane Bioreactors

Gül

Köse-Mutlu

Park

et al. 2019

Encyclopedia of Water

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In today's World, the recovery, reuse, and recycling of water turn heads more with the continuing water scarcity, and this requires a development of conventional wastewater treatment technologies. Membrane bioreactors (MBRs) can provide many advantages over the conventional activated sludge systems. However, biofouling problem restricts the potential widespread application of MBRs. The main reason for this is the increase in the operating costs. Nowadays, there are much research to elucidate and control the membrane fouling in MBR. In fact, it is difficult to find an effective solution for biofouling problem without heading toward to biological concepts, because the biomass matrix is significantly complex and includes various living microorganisms. Quorum quenching (QQ) mechanism aims to prevent the signaling for communication and group behaviors. For the last five years, the development of antibiofouling strategies based on QQ in MBRs has been a relatively hot topic in biofouling research. QQ is a natural process which is not harmful to the environment. Therefore, unquestionably, studies on QQ in MBR represent a promising alternative for controlling biofouling for future applications. This article explains the quorum sensing (QS) and QQ concepts and presents various and highly successful examples for enzymatic, bacterial, and fungal QQ MBR operations.

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Effective biofilm control in a membrane biofilm reactor using a quenching bacterium (Rhodococcus sp. BH4)

Taşkan

Hasar

Lee

2020

Biotech & Bioengineering

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The biofilm thickness in membrane biofilm reactors (MBfRs) is an important factor affecting system performance because excessive biofilm formation on the membrane surface inhibits gas diffusion to the interior of the biofilm, resulting in a significant reduction in the performance of contaminant removal. This study provides innovative insights into the control of biofilm thickness in O2‐based MBfRs by using the quorum quenching (QQ) method. The study was carried out in MBfRs operated at different gas pressures and hydraulic retention times (HRTs) using QQ beads containing Rhodococcus sp. BH4 at different amounts. The highest performance was observed in reactors operated with 0.21 ml QQ bead/cm2 membrane surface area, 12 HRTs and 1.40 atm. Over this period, the performance increase in chemical oxygen demand (COD) removal was 25%, while the biofilm thickness on the membrane surface was determined to be 250 μm. Moreover, acetate and equivalent oxygen flux results reached 6080 and 10 640 mg·m−2·d−1 maximum values, respectively. The extracellular polymeric substances of the biofilm decreased significantly with the increase of gas pressure and QQ beads amount. Polymerase chain reaction denaturing gradient gel electrophoresis results showed that the microbial community in the MBfR system changed depending on operating conditions and bead amount. The results showed that the QQ method was an effective method to control the biofilm thickness in MBfR and provide insights for future research.

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Quorum quenching MBR operations for biofouling control under different operation conditions and using different immobilization media

Cited by 19 publications

References 28 publications

Process-Oriented Review of Bacterial Quorum Quenching for Membrane Biofouling Mitigation in Membrane Bioreactors (MBRs)

Process-Oriented Review of Bacterial Quorum Quenching for Membrane Biofouling Mitigation in Membrane Bioreactors (MBRs)

Quorum Quenching for Biofouling Control in Membrane Bioreactors

Effective biofilm control in a membrane biofilm reactor using a quenching bacterium (Rhodococcus sp. BH4)

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