Macroencapsulation of quorum quenching bacteria by polymeric membrane layer and its application to MBR for biofouling control

Kim, Sang-Ryoung; Lee, Kibaek; Kim, Jeongeun; Won, Young-June; Yeon, Kyung‐Min; Lee, Chung‐Hak; Lim, Dong-Joon

doi:10.1016/j.memsci.2014.09.009

Cited by 100 publications

(59 citation statements)

References 31 publications

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“…In this context, membranes are usually taken out at the end of operation and specimens are cut off to measure the Total Attached Biomass (TAB) and/or to conduct microscopic observations using Confocal Laser Scanning Microscopy (CLSM) to evaluate the biofilm morphology. An approximate 50% ( w / w ) reduction in TAB has been reported after 1.7 and 9 days of operation by Oh et al [28] and Kim et al [50], respectively, while Kim et al [25] recorded a 70% reduction after only 3 days of operation, which was in accordance with the CLSM observations (references n° 1, 5 and 13 in Table 1). Lee et al [26] recorded the most pronounced reduction in TAB with almost 90% after 14 days of operation (reference n° 14 in Table 1).…”

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

confidence: 85%

“…The time delays to reach the two points of 25 kPa and 40 kPa with QQ were approximately the same for Kim et al [25,50] (references n° 5 and 13 in Table 1), which refers to similar slopes (around 160 kPa/day for Kim et al [25] and 25 kPa/day for Kim et al [50]) for the sections CD and C’D’ (Figure 7). This indicates that Rhodococcus sp.…”

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

confidence: 56%

“…BH4 entrapped in the beads was around 6 mg BH4/g sodium alginate. Kim et al [50] further developed macrocapsules by coating the CEBs with a microporous polymer layer for better resistance to harsh conditions resulting from the use of real WW. Recently, Lee et al [26] developed QQ beads made of a mixture of polyvinyl alcohol and sodium alginate to reinforce their stability in real WW.…”

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%

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

confidence: 85%

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

confidence: 56%

Section: Methods For Entrapping Qq Bacteria In Mbrsmentioning

confidence: 99%

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

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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“…This layer impeded water permeation into and DMF escaped from the interior of PBs, so the phase separation process in the inner part of PBs could occur and the internal microchannel was well-structured [22,30,31] . Besides, the inner microchannel structure provided a good support for cell proliferation and viability [13] .…”

Section: Morphology Of Beadsmentioning

confidence: 99%

Novel porous polyethersulfone beads as matrix to immobilize Comamonas testosteroni sp. bdq06 in quinoline biodegradation

Geng

Zhu

et al. 2015

Chem. Res. Chin. Univ.

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Novel matrix beads for the immobilization of strain Comamonas testosteroni sp. bdq06 to degrade quinoline were fabricated from polyethersulfone(PES). The beads have an average size of 3 mm and a surface dense layer of 20 microns. To help adhesion and proliferation of bacterial cells, the surfaces of the PES beads were etched, and numerous holes about 1.5 micrometers in diameter were generated as tunnels for cell colonizing in the larger internal cavities of about 5 micrometers in diameter. The quinoline degradation was remarkably enhanced by the cells immobilized in PES beads compared with that by the free cells at pH 5.0 or 10.0 and a temperature of 40 °C. The enhanced degradation of quinoline was contributed to the biofilm on the surface of PES beads, resulting in the significant reduction of retention time from 9 h to 2 h. Furthermore, the beads remain intact after the ultrasonic treatment of them for 30 min or recycling 50 times, indicating that they have excellent mechanical strength, flexibility and swelling capacity. Thus, PES beads have great potential to be matrix for the cell immobilization in bioaugmentation.

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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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Macroencapsulation of quorum quenching bacteria by polymeric membrane layer and its application to MBR for biofouling control

Cited by 100 publications

References 31 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)

Novel porous polyethersulfone beads as matrix to immobilize Comamonas testosteroni sp. bdq06 in quinoline biodegradation

Quorum Quenching for Biofouling Control in Membrane Bioreactors

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