Anaerobic hybrid membrane bioreactor for treatment of synthetic leachate: Impact of organic loading rate and sludge fractions on membrane fouling

Burman, Isha; Sinha, Alok

doi:10.1016/j.wasman.2020.04.031

Cited by 24 publications

(8 citation statements)

References 67 publications

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“…The greater protein concentration in the EPS resulted in greater fouling behavior in AnMBR. Many studies have reported that protein, rather that polysaccharide, was the main contributor to membrane fouling [ 17 , 18 ]. In addition, the increase in OLR rather than EPS production significantly affected fouling and was associated with other operational parameters in AnMBR [ 17 ].…”

Section: Resultsmentioning

confidence: 99%

“…Many studies have reported that protein, rather that polysaccharide, was the main contributor to membrane fouling [ 17 , 18 ]. In addition, the increase in OLR rather than EPS production significantly affected fouling and was associated with other operational parameters in AnMBR [ 17 ]. It should be noted, though, that this study refers to a lab-scale implementation and, therefore, the critical numerical values of MLSS must be verified in pilot- or field-scale plants.…”

Section: Resultsmentioning

confidence: 99%

“…Irreversible fouling can be removed by chemical cleaning [ 11 ]. A substantial amount of research has evaluated fouling behavior in AnMBR, with different operational conditions affecting cake layer formation, EPS and SMP, and inorganic precipitates [ 13 , 14 , 15 , 16 , 17 , 18 ]. The operational conditions, especially the OLR, can affect microbial production, biomass concentration, and EPS concentration.…”

Section: Introductionmentioning

confidence: 99%

“…The effects of OLR on fouling have also been confirmed when using a ceramic membrane in AnMBR. During high-loading leachate wastewater treatment, fouling was affected by OLR > mixed liquor suspended solids (MLSS) > EPS > SMP [ 17 ].…”

Section: Introductionmentioning

confidence: 99%

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Fouling Behavior in a High-Rate Anaerobic Submerged Membrane Bioreactor (AnMBR) for Palm Oil Mill Effluent (POME) Treatment

et al. 2021

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The characteristics of foulant in the cake layer and bulk suspended solids of a 10 L submerged anaerobic membrane bioreactor (AnMBR) used for treatment of palm oil mill effluent (POME) were investigated in this study. Three different organic loading rates (OLRs) were applied with prolonged sludge retention time throughout a long operation time (270 days). The organic foulant was characterized by biomass concentration and concentration of extracellular polymeric substances (EPS). The thicknesses of the cake layer and foulant were analyzed by confocal laser scanning microscopy and Fourier transform infrared spectroscopy. The membrane morphology and inorganic elements were analyzed by field emission scanning electron microscope coupled with energy dispersive X-ray spectrometer. Roughness of membrane was analyzed by atomic force microscopy. The results showed that the formation and accumulation of protein EPS in the cake layer was the key contributor to most of the fouling. The transmembrane pressure evolution showed that attachment, adsorption, and entrapment of protein EPS occurred in the membrane pores. In addition, the hydrophilic charge of proteins and polysaccharides influenced the adsorption mechanism. The composition of the feed (including hydroxyl group and fatty acid compounds) and microbial metabolic products (protein) significantly affected membrane fouling in the high-rate operation.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Fouling Behavior in a High-Rate Anaerobic Submerged Membrane Bioreactor (AnMBR) for Palm Oil Mill Effluent (POME) Treatment

et al. 2021

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“…Then, R ir value can be obtained by calculating the difference between R m and R ir + R m . After getting the resistance values R t , R m , and R ir , R r can be calculated using Equation 2according to [31][32][33].…”

Section: Cake Layer Resistance Calculationmentioning

confidence: 99%

New Insights into the Microbial Diversity of Cake Layer in Yttria Composite Ceramic Tubular Membrane in an Anaerobic Membrane Bioreactor (AnMBR)

Nilusha

Wei

2021

Membranes

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Cake layer formation is an inevitable challenge in membrane bioreactor (MBR) operation. The investigations on the cake layer microbial community are essential to control biofouling. This work studied the bacterial and archaeal communities in the cake layer, the anaerobic sludge, and the membrane cleaning solutions of anaerobic membrane bioreactor (AnMBR) with yttria-based ceramic tubular membrane by polymerase chain reaction (PCR) amplification of 16S rRNA genes. The cake layer resistance was 69% of the total membrane resistance. Proteins and soluble microbial by-products (SMPs) were the dominant foulants in the cake layer. The pioneering archaeal and bacteria in the cake layer were mostly similar to those in the anaerobic bulk sludge. The dominant biofouling bacteria were Proteobacteria, Bacteroidetes, Firmicutes, and Chloroflexi and the dominant archaeal were Methanosaetacea and Methanobacteriacea at family level. This finding may help to develop antifouling membranes for AnMBR treating domestic wastewater.

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AnMBR technology for landfill leachate treatment: a framework towards improved performance

Issa

Kik

El‐Fadel

2022

Rev Environ Sci Biotechnol

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Anaerobic hybrid membrane bioreactor for treatment of synthetic leachate: Impact of organic loading rate and sludge fractions on membrane fouling

Cited by 24 publications

References 67 publications

Fouling Behavior in a High-Rate Anaerobic Submerged Membrane Bioreactor (AnMBR) for Palm Oil Mill Effluent (POME) Treatment

Fouling Behavior in a High-Rate Anaerobic Submerged Membrane Bioreactor (AnMBR) for Palm Oil Mill Effluent (POME) Treatment

New Insights into the Microbial Diversity of Cake Layer in Yttria Composite Ceramic Tubular Membrane in an Anaerobic Membrane Bioreactor (AnMBR)

AnMBR technology for landfill leachate treatment: a framework towards improved performance

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