Characteristics and fouling behaviors of Dissolved Organic Matter fractions in a full-scale submerged membrane bioreactor for municipal wastewater treatment

Jacquin, Céline; Teychene, Benoît; Lemée, Laurent; Lesage, Geoffroy; Héran, Marc

doi:10.1016/j.bej.2017.12.016

Cited by 29 publications

(20 citation statements)

References 58 publications

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“…Every UF experiment included filtration of 250 mL of the pre-filtered PMTE as a feed sample. The filtration protocol also included membrane cleaning steps in accordance with the methodology described by C. Jacquin et al [20] and set out below.…”

Section: Membrane Filtration Testsmentioning

confidence: 99%

“…In this study, 3DEEM spectra were collected with the scanning excitation wavelength (λ ex ) set at 200-500 nm and the emission wavelength (λ em ) from 280 nm to 600 nm. Scan speed was set at 1000 nm/min and the increment to 2 nm, while the slit width was set at 10 nm in excitation and emission [20,21]. To avoid Raman scatter by the particles [19], fluorescence measurements were done on pre-filtered (0.45 µm) at room temperature (22 ± 2 • C).…”

Section: Deem Fluorescence Spectra Analysismentioning

confidence: 99%

“…To avoid Raman scatter by the particles [19], fluorescence measurements were done on pre-filtered (0.45 µm) at room temperature (22 ± 2 • C). To limit overlapping signals and avoid the inner filter effect, the samples were diluted with pure water (Mili-Q, Millipore, Merck KGaA, Darmstadt, Germany) with a dilution ratio determined after measurements at successive dilution ratios [20,41,42]. All spectra were Raman normalized using a Mili-Q water blank (the Milli-Q water spectrum was subtracted from the 3DEEM spectrum for each sample) following the procedure described by Peiris et al [22] and Goletz et al [43].…”

Section: Deem Fluorescence Spectra Analysismentioning

confidence: 99%

“…In addition, the 3DEEM data were analyzed quantitatively using the volume of fluorescence Φ (i) W. Chen et al [21] and C. Jacquin et al [20]. The volume of fluorescence and the reduction in fluorescent organic matter compounds are shown in Table 7.…”

Section: Deem Fluorescence Analysismentioning

confidence: 99%

“…Techniques such as chemical analysis, field scanning electron microscopy (FESEM), energy-dispersive spectrophotometry (EDS), attenuated total reflection-Fourier transform infrared (ATR-FTIR) spectroscopy, and 3D fluorescence excitation-emission matrix (3DEEM) analysis were applied to understand which fraction of the DCS caused the reversible and irreversible fouling [18,[20][21][22][23][24].…”

Section: Introductionmentioning

confidence: 99%

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Identification of Foulants on Polyethersulfone Membranes Used to Remove Colloids and Dissolved Matter from Paper Mill Treated Effluent

Sousa

Lora-García

López-Pérez

et al. 2020

Water

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In this study, membrane fouling caused by paperboard mill treated effluent (PMTE) was investigated based on a dead-end ultrafiltration (UF) pilot-scale study. The membranes employed were commercial hydrophobic UF membranes made of polyethersulfone (PES) with a molecular weight cut-off of 10 kDa, 50 kDa, and 100 kDa. Membrane fouling mechanism during dead-end filtration, chemical analysis, field emission scanning electron microscopy (FESEM), energy-dispersive spectrophotometry (EDS), attenuated total reflection-Fourier transform infrared (ATR-FTIR) spectroscopy and 3D fluorescence excitation–emission matrix (3DEEM) analysis were applied to understand which fraction of the dissolved and colloidal substances (DCS) caused the membrane fouling. The results indicated that the phenomenon controlling fouling mechanism tended to be cake layer formation (R2 ≥ 0.98) for all membranes tested. The 3DEEM results indicate that the majority of the organic foulants with fluorescence characteristics on the membrane were colloidal proteins (protein-like substances I+II) and macromolecular proteins (soluble microbial products, SMP-like substances). In addition, polysaccharide (cellulosic species), fatty and resin acid substances were identified on the fouled membrane by the ATR–FTIR analysis and play an important role in membrane fouling. In addition, the FESEM and EDS analyses indicate that the presence of inorganic foulants on the membrane surfaces, such as metal ions and especially Ca2+, can accelerate membrane fouling, whereas Mg and Si are linked to reversible fouling.

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Section: Membrane Filtration Testsmentioning

confidence: 99%