Membrane biofouling retardation and improved sludge characteristics using quorum quenching bacteria in submerged membrane bioreactor

Maqbool, Tahir; Khan, Sher Jamal; Waheed, Hira; Lee, Chung‐Hak; Hashmi, Imran; Iqbal, Hamid

doi:10.1016/j.memsci.2015.02.011

Cited by 71 publications

(52 citation statements)

References 30 publications

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“…Synthetic wastewater was used as a substrate for the microbes with a COD:N:P as 100:10:2. Detailed recipe of the synthetic wastewater was similar to that reported by Maqbool et al (2015).…”

Section: Methodsmentioning

confidence: 92%

Microbial population dynamics and profiling of quorum sensing agents in membrane bioreactor

Waheed

Hashmi

Khan

et al. 2016

International Biodeterioration & Biodegradation

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“…Synthetic wastewater was used as a substrate for the microbes with a COD:N:P as 100:10:2. Detailed recipe of the synthetic wastewater was similar to that reported by Maqbool et al (2015).…”

Section: Methodsmentioning

confidence: 92%

Microbial population dynamics and profiling of quorum sensing agents in membrane bioreactor

Waheed

Hashmi

Khan

et al. 2016

International Biodeterioration & Biodegradation

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“…Immobilization or encapsulation of bacterial hosts secreting QQ enzymes in magnetic carriers, beads, or hollow-fiber vessels has been previously applied to achieve lower membrane fouling in wastewater treatment systems [84,116,117]. It is proposed that such a strategy would allow continuous growth and self-replenishment of the bacterial source and enzymes within the system.…”

Section: Introductionmentioning

confidence: 99%

Quorum Sensing and the Use of Quorum Quenchers as Natural Biocides to Inhibit Sulfate-Reducing Bacteria

2016

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Sulfate-reducing bacteria (SRB) are one of the main protagonist groups of biocorrosion in the seawater environment. Given their principal role in biocorrosion, it remains a crucial task to develop strategies to reduce the abundance of SRBs. Conventional approaches include the use of biocides and antibiotics, which can impose health, safety, and environmental concerns. This review examines an alternative approach to this problem. This is achieved by reviewing the role of quorum sensing (QS) in SRB populations and its impact on the biofilm formation process. Genome databases of SRBs are mined to look for putative QS systems and homologous protein sequences representative of autoinducer receptors or synthases. Subsequently, this review puts forward the potential use of quorum quenchers as natural biocides against SRBs and outlines the potential strategies for the implementation of this approach.

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“…BH4-mediated QQ seems to have no effect on the TMP jump stage in these two cases. In contrast, for Lee et al [26] and Maqbool et al [27] (references n° 6 and 14 in Table 1), the point of 40 kPa was not actually reached and a less pronounced TMP jump was recorded (data not shown), which indicates a substantial effect of Rhodococcus sp. BH4-mediated QQ on the TMP jump.…”

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

confidence: 76%

“…Yeon et al [24] were the first to provide evidence of the occurrence of AHL-mediated QS in MBRs by proving the presence of different AHLs in the biocake formed on the membrane surface. This result has been confirmed [25,26,27,28,29,30] and then taken to the next step with the determination of a correlation between the AHL amount and the transmembrane pressure (TMP) level [24,29]. Hence, the occurrence of AHL-mediated QS has not only been highlighted but has also been demonstrated to be closely related to biofouling in MBRs.…”

Section: Introductionmentioning

confidence: 78%

“…With the implementation of Rhodococcus sp. BH4 as a QQ bacterium, Maqbool et al [27] determined the amount of SMP in the mixed liquor by analyzing the supernatant from an AS sample (reference n° 6 in Table 1). A 90% reduction in the SMP amount was recorded after 80 days of operation, indicating that 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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Membrane biofouling retardation and improved sludge characteristics using quorum quenching bacteria in submerged membrane bioreactor

Cited by 71 publications

References 30 publications

Microbial population dynamics and profiling of quorum sensing agents in membrane bioreactor

Microbial population dynamics and profiling of quorum sensing agents in membrane bioreactor

Quorum Sensing and the Use of Quorum Quenchers as Natural Biocides to Inhibit Sulfate-Reducing Bacteria

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

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