Evaluating the effects of organic matter bioavailability on nanofiltration membrane using real-time monitoring

Park, Sanghun; You, Jeongyeop; Ahn, Yujin; Jung, Woonggyu; Kim, Jihye; Lee, Seung-Yun; Park, Jong Kwan

doi:10.1016/j.memsci.2017.11.053

Cited by 16 publications

(2 citation statements)

References 43 publications

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“…This study demonstrated that DOCT-based characterization is a powerful tool for investigating the dynamic processes during membrane fouling. More recent membrane fouling studies utilizing OCT can be found in Han et al (2018) and Park et al (2018).…”

Section: Foulingmentioning

confidence: 99%

Analysis of Industry-Related Flows by Optical Coherence Tomography—A Review

Koponen

Haavisto²

2020

KONA

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Optical Coherence Tomography (OCT) is a light-based imaging method capable of simultaneously capturing the internal structure and motion (1D, 2D or 3D) of various opaque and turbid materials with a micron-level spatial resolution. Depending on the OCT technology, axial scanning rates can vary in a range of tens to hundreds of kHz. The actual imaging depth significantly depends on the optical properties of the material and can vary from micrometers to a few millimeters. From the viewpoint of industrial applications, OCT technology is very appealing. Due to its resolution, speed, and ability to deal with opaque materials, it fills an apparent gap in available measurement methods. Nonetheless, OCT has not to date seen widespread growth in the industrial field. This has been at least partly due to a lack of commercial devices compact and flexible enough to adapt to industrial needs. The recent emergence of more generic commercial OCT devices has considerably lowered the threshold for adapting the technique. The utilization of OCT for structural analysis, also outside the medical field, has been thoroughly discussed in scientific literature. Therefore, in this paper, we will mainly concentrate on applications of OCT that also utilize its capability of performing velocity measurements. The emphasis will be on industrially motivated problems such as rheology, microfluidics, fouling and turbulence.

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Section: Foulingmentioning

confidence: 99%

Analysis of Industry-Related Flows by Optical Coherence Tomography—A Review

Koponen

Haavisto²

2020

KONA

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“…Membrane fouling is inevitable and severely restricts the implementation of membrane technology. The major types of fouling in water purification process include the precipitation of inorganic salts, accumulation of suspended particulate matter, and the formation of a biofilm—a mixture of organic matter and microorganisms [ 12 , 13 ]. The precipitation of inorganic salts can be alleviated by the addition of anti-scalants and acid prior to membrane filtration [ 14 ].…”

Section: Introductionmentioning

confidence: 99%

Pilot Study on the Combination of Different Pre-Treatments with Nanofiltration for Efficiently Restraining Membrane Fouling While Providing High-Quality Drinking Water

Chen

Pang

et al. 2021

Membranes

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Nanofiltration (NF) is a promising post-treatment technology for providing high-quality drinking water. However, membrane fouling remains a challenge to long-term NF in providing high-quality drinking water. Herein, we found that coupling pre-treatments (sand filtration (SF) and ozone–biological activated carbon (O3-BAC)) and NF is a potent tactic against membrane fouling while achieving high-quality drinking water. The pilot results showed that using SF+O3-BAC pre-treated water as the feed water resulted in a lower but a slowly rising transmembrane pressure (TMP) in NF post-treatment, whereas an opposite observation was found when using SF pre-treated water as the feed water. High-performance size-exclusion chromatography (HPSEC) and three-dimensional excitation–emission matrix (3D-EEM) fluorescence spectroscopy determined that the O3-BAC process changed the characteristic of dissolved organic matter (DOM), probably by removing the DOM of lower apparent molecular weight (LMW) and decreasing the biodegradability of water. Moreover, amino acids and tyrosine-like substances which were significantly related to medium and small molecule organics were found as the key foulants to membrane fouling. In addition, the accumulation of powdered activated carbon in O3-BAC pre-treated water on the membrane surface could be the key reason protecting the NF membrane from fouling.

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Physico‐chemical processes

Ouyang

Chen

Shi

et al. 2019

Water Environment Research

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The review scans research articles published in 2018 on physico‐chemical processes for water and wastewater treatment. The paper includes eight sections, that is, membrane technology, granular filtration, flotation, adsorption, coagulation/flocculation, capacitive deionization, ion exchange, and oxidation. The membrane technology section further divides into six parts, including microfiltration, ultrafiltration, nanofiltration, reverse osmosis/forward osmosis, and membrane distillation.Practitioner points Totally 266 articles on water and wastewater treatment have been scanned; The review is sectioned into 8 major parts; Membrane technology has drawn the widest attention from the research community.

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Evaluating the effects of organic matter bioavailability on nanofiltration membrane using real-time monitoring

Cited by 16 publications

References 43 publications

Analysis of Industry-Related Flows by Optical Coherence Tomography—A Review

Analysis of Industry-Related Flows by Optical Coherence Tomography—A Review

Pilot Study on the Combination of Different Pre-Treatments with Nanofiltration for Efficiently Restraining Membrane Fouling While Providing High-Quality Drinking Water

Physico‐chemical processes

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