Understanding the fouling of UF/MF hollow fibres of biologically treated wastewaters using advanced EfOM characterization and statistical tools

Filloux, Emmanuelle; Labanowski, Jérôme; Croué, Jean-Philippe

doi:10.1016/j.biortech.2012.05.081

Cited by 58 publications

(21 citation statements)

References 29 publications

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“…The SMP are found to be the majority of soluble organic matter in EfOM (Barker and Stuckey, 1999). Besides SMP, NOM conveyed from drinking water sources proved another important ingredient of EfOM Filloux et al, 2012). In order to provide more detailed information about the components and origins of SMP/EfOM, more advanced componential characterization is necessary.…”

Section: Introductionmentioning

confidence: 99%

Relationship between soluble microbial products (SMP) and effluent organic matter (EfOM): Characterized by fluorescence excitation emission matrix coupled with parallel factor analysis

Sun

et al. 2015

Chemosphere

122

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Section: Introductionmentioning

confidence: 99%

Relationship between soluble microbial products (SMP) and effluent organic matter (EfOM): Characterized by fluorescence excitation emission matrix coupled with parallel factor analysis

Sun

et al. 2015

Chemosphere

122

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“…In this study, a tight UF with MWCO of 10 kD was used and achieved complete rejection of macromolecular biopolymers (major proteins and minor polysaccharides) in EfOM, which resulted in the simultaneous occurrence of cake layer and standard blocking. In some studies [18,19] using loose UF (e.g., 150 kD), the fouling mechanism of cake layer and/or initial pore blocking followed by cake layer was identified and might be related to the partial rejection of biopolymers (mainly proteins) by the loose UF membrane. The NF (MWCO of 200 D) filtration of UF permeate in this study could be regarded as the fouling potential of the fractions with low to intermediate MW of 200-10k D in EfOM (i.e., the fractions except biopolymers), which little information on this was available in the literature Thus, the sequential UF-NF filtration array would be helpful to explore the fouling potential of individual fractions of EfOM and investigate the applicability of hybrid UF-NF process for tertiary treatment and reuse of biologically treated secondary effluent.…”

Section: [(V/a) 2 -(V/a) 1 ]/(T 2 -T 1 ) and (T 2 -T 1 )/[(V/a) 2 -(Vmentioning

confidence: 99%

Membrane Fouling Potential of Secondary Effluent Organic Matter (EfOM) from Conventional Activated Sludge Process

Wei

Amy

2012

J. Memb. Separ. Tech.

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Secondary effluent organic matter (EfOM) from a conventional activated sludge process was filtered through constant-pressure dead-end filtration tests with a sequential ultrafiltration (UF, molecular weight cut-off (MWCO) of 10k Dalton) and nanofiltration (NF, MWCO of 200 Dalton) array to investigate its membrane fouling potential. Advanced analytical methods including liquid chromatography with online carbon detection (LC-OCD) and fluorescent excitation-emission matrix (F-EEM) were employed for EfOM characterization. EfOM consisted of humic substances and building blocks, low molecular weight (LMW) neutrals, biopolymers (mainly proteins) and hydrophobic organics according to the sequence of their organic carbon fractions. The UF rejected only biopolymers and the NF rejected most humics and building blocks and a significant part of LMW neutrals. Simultaneous occurrence of cake layer and standard blocking during the filtration process of both UF and NF was identified according to constant-pressure filtration equations, which was possibly caused by the heterogeneous nature of EfOM with a wide MW distribution (several ten to several million Dalton). Thus the corresponding two fouling indices (kc for cake layer and ks for standard blocking) from UF and NF could characterize the fouling potential of macromolecular biopolymers and low to intermediate MW organics (including humics, building blocks, LMW neutrals), respectively. Compared with macromolecular biopolymers, low to intermediate MW organics exhibited a much higher fouling potential due to their lower molecular weight and higher concentration.

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“…Ultrafiltration (UF) is considered as a promising process for advanced treatment of secondary effluents, because of its high removal rate of turbidity, organic matters such as humic substances, and pathogens [2,7]. Moreover, the moderate capital costs and ease of operation make it a competitive alternative to conventional physicochemical processes [7,8].…”

Section: Introductionmentioning

confidence: 99%

Combined Adsorption/Ultrafiltration of Secondary Effluents Using Powdered Zeolites

Chen

Bai

et al. 2016

Chem Eng & Technol

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The performance of powdered zeolite (PZ) adsorption/ultrafiltration (UF) with real secondary effluents is investigated. With the assistance of PZs, the membrane fouling rate was reduced and the permeate flux recovery as well as the advanced treatment of the secondary effluents were enhanced. 3D excitation emission matrix (3D-EEM) fluorescence spectra indicate that the removal of fluorescence intensity for aromatic proteins, fulvic acid-like materials, soluble microbial byproduct-like materials, and humic acid-like organics could be improved by PZs. UF membranes with PZs can increase the removal efficiency of organics, especially of those with low molecular weight. The characteristics of the cake layer on the surface of an UF membrane were determined by scanning electron microscopy and electron energy-dispersive X-ray spectroscopy for the combined adsorption/UF membrane.

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Understanding the fouling of UF/MF hollow fibres of biologically treated wastewaters using advanced EfOM characterization and statistical tools

Cited by 58 publications

References 29 publications

Relationship between soluble microbial products (SMP) and effluent organic matter (EfOM): Characterized by fluorescence excitation emission matrix coupled with parallel factor analysis

Relationship between soluble microbial products (SMP) and effluent organic matter (EfOM): Characterized by fluorescence excitation emission matrix coupled with parallel factor analysis

Membrane Fouling Potential of Secondary Effluent Organic Matter (EfOM) from Conventional Activated Sludge Process

Combined Adsorption/Ultrafiltration of Secondary Effluents Using Powdered Zeolites

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