Impact of the Interaction between Aquatic Humic Substances and Algal Organic Matter on the Fouling of a Ceramic Microfiltration Membrane

Zhang, Xiao Lei; Fan, Linhua; Roddick, Felicity

doi:10.3390/membranes8010007

Cited by 16 publications

(4 citation statements)

References 36 publications

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“…The influence of the soluble algal organic matter (AOM) characteristic on the fouling of a seven-channel tubular ceramic (MF) membrane has been investigated at lab scale by [11]. The influence of the interaction between aquatic humic substances and the algal organic AOM derived from Microcystis aeruginosa on the fouling of a ceramic MF membrane has been studied by [12].…”

Section: Introductionmentioning

confidence: 99%

The Role of Humic Acid, PP Beads, and pH with Water Backwashing in a Hybrid Water Treatment of Multichannel Alumina Microfiltration and PP Beads

2019

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Photooxidation oxidizes most organic compounds by mineralizing them to small inorganic molecules. In this study, the effects of dissolved organic matter (DOM), pH, and polypropylene (PP) beads concentration on membrane fouling were investigated in a hybrid water treatment process consisting of seven-channel alumina microfiltration (pore size 1.0 μm) and pure PP beads water backwashing with UV irradiation for photooxidation. The synthetic feed was prepared with humic acid and kaolin and flowed inside the microfiltration (MF) membrane. The permeate contacted the PP beads fluidized in the gap of the membrane and module with outside UV irradiation. Membrane fouling resistance (Rf) increased dramatically with an increase in the concentration of humic acid (HA) from 6 mg/L to 8 mg/L. The treatment efficiency of DOM increased dramatically, from 14.3% to 49.7%, with an increase in the concentration of HA. The Rf decreased with an increase of PP beads concentration. However, maximum permeate volume (VT) was acquired at 5 g/L of PP beads. The maximal treatment efficiency of DOM was 51.3% at 40 g/L of PP beads. The Rf increased with an increase in the pH of feed, and the maximum VT was acquired at a pH of 5. The maximal treatment efficiency of DOM was 52.5% at pH 9.

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Section: Introductionmentioning

confidence: 99%

The Role of Humic Acid, PP Beads, and pH with Water Backwashing in a Hybrid Water Treatment of Multichannel Alumina Microfiltration and PP Beads

2019

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“…At the laboratory scale, the effect of the appearance of soluble algal organic matter (AOM) on the membrane fouling was inspected for a 7-channel tubular ceramic MF membrane [ 20 ]. The influence of the collaboration between aquatic humic materials and the AOM coming from microcystis aeruginosa was studied on the membrane fouling of a ceramic MF [ 21 ]. A flat-sheet ceramic membrane was applied to municipal wastewater treatment by a high-rate membrane bioreactor for competent recovery of organic substances [ 22 ].…”

Section: Introductionmentioning

confidence: 99%

Role of Titanium Dioxide-Immobilized PES Beads in a Combined Water Treatment System of Tubular Alumina Microfiltration and PES Beads

Hong,

Park,

Park

2023

Membranes

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The membrane process has a limit to the decay of various pollutants in water. To improve the problem, the roles of backwashing media and titanium dioxide (TiO2) photocatalyst-immobilized-polyethersulfone (PES) beads’ concentration were investigated in a combined system of tubular alumina MF and the PES beads for advanced drinking water treatment. The space between the outside of the MF membrane and the module inside was filled with the PES beads. UV at a wavelength of 352 nm was irradiated from outside of the acryl module. A quantity of humic acid and kaolin was dissolved in distilled water for synthetic water. Water or air intermittent backwashing was performed outside to inside. The membrane fouling resistance after 3 h process (Rf,180) was minimum at 30 g/L of the PES beads for water backwashing, and at 40 g/L for air backwashing when increasing the PES beads from 0 to 50 g/L. The irreversible membrane fouling resistance after physical cleaning (Rif) was at the bottom at 5 g/L of the PES beads for water backwashing, which was 3.43 times higher than minimal at 40 g/L of the PES beads for air backwashing. The treatment effectiveness of turbidity increased when increasing the PES beads’ concentration from 0 to 50 g/L; however, it reached a maximum at 98.1% at 40 g/L and 99.2% at 50 g/L for water and air backwashing, respectively. The treatment effectiveness of UV254 absorbance, which was dissolved organic matter (DOM), increased dramatically when increasing the PES beads; however, it reached a peak of 83.0% at 40 g/L and 86.0% at 50 g/L for water and air backwashing, respectively. Finally, the best PES beads’ concentration was 20~30 g/L to minimize the membrane fouling; however, it was 50 g/L to remove pollutants effectively. The water backwashing was better than the air at treating DOM; however, the air backwashing was more effective than the water at removing turbid matter and reducing membrane fouling.

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“…Ceramic membrane bioreactors (MBRs) have attracted a great deal of interest for wastewater treatment, due to their high resistance to harsh environmental conditions. − Meanwhile, a higher permeate flux could be expected because ceramic membranes have an excellent surface hydrophilicity and well-organized pore structure. , However, membrane fouling is still a substantial hindrance to the application of ceramic MBRs.…”

Section: Introductionmentioning

confidence: 99%

Chemical Cleaning-Triggered Release of Dissolved Organic Matter from a Sludge Suspension in a Ceramic Membrane Bioreactor: A Potential Membrane Foulant

Sun

Liu

2021

ACS EST Water

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Ceramic membrane bioreactors (MBRs) have attracted a great deal of interest due to their robustness in the treatment of various kinds of wastewaters. So far, in situ chemical cleaning with sodium hypochlorite (NaClO) has been the most prevalent MBR cleaning method. This study showed that in situ NaClO cleaning in MBRs triggered a significant release of dissolved organic matter (DOM) from a sludge suspension, while the generated DOM could facilitate fouling development, especially irreversible fouling in a ceramic MBR. It was found that biopolymers with a molecular weight (MW) of >10 kDa and humic substances could be effectively rejected by the ceramic membranes. As such, the membrane fouling rate (dTMP/dt) of the supernatant from a NaClO-treated sludge suspension was closely related to the rejected levels of biopolymers and humic substances. However, hydrophobic DOM and low-MW organics (MW < 500 Da) could easily pass through the membranes, indicating an insignificant contribution to the observed membrane fouling. Consequently, this study verified the contributions of DOM released from a sludge suspension after in situ membrane cleaning with NaClO with respect to subsequent membrane fouling development in a ceramic MBR.

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Impact of the Interaction between Aquatic Humic Substances and Algal Organic Matter on the Fouling of a Ceramic Microfiltration Membrane

Cited by 16 publications

References 36 publications

The Role of Humic Acid, PP Beads, and pH with Water Backwashing in a Hybrid Water Treatment of Multichannel Alumina Microfiltration and PP Beads

The Role of Humic Acid, PP Beads, and pH with Water Backwashing in a Hybrid Water Treatment of Multichannel Alumina Microfiltration and PP Beads

Role of Titanium Dioxide-Immobilized PES Beads in a Combined Water Treatment System of Tubular Alumina Microfiltration and PES Beads

Chemical Cleaning-Triggered Release of Dissolved Organic Matter from a Sludge Suspension in a Ceramic Membrane Bioreactor: A Potential Membrane Foulant

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