Výsledky vyhledávání - "Chang-Hyun Nahm"

Effect of Permeate Flux and Backwashing on Quorum Sensing and Quenching within Biocake Layer in Membrane Bioreactor

Autor: Kibaek Lee, J. H. Lim, Hosung Lee, Dowon Chae, Sang Hyun Lee, Pyung Kyu Park, Sojin Min, Chung-Hak Lee, Chang Hyun Nahm, Kwang-Ho Choo

Publikováno v: Journal of Environmental Engineering. 146

Filtration and backwashing during the operation of a membrane bioreactor (MBR) physically induce the cyclic attachment and detachment of microbes on the membrane surface. Thus, permeate flu...

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0ad7a6f70ffcd3b77a35afae68e6748a
https://doi.org/10.1061/(asce)ee.1943-7870.0001683

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Membrane biofouling behaviors at cold temperatures in pilot-scale hollow fiber membrane bioreactors with quorum quenching

Autor: Pyung Kyu Park, Kibaek Lee, Chang Hyun Nahm, Jun Seong Park, Kwang-Ho Choo, Tahir Iqbal

Publikováno v: Biofouling. 34:912-924

In this study, the seasonality of the biofouling behavior of pilot-scale membrane bioreactors (MBRs) run in parallel with vacant sheets and quorum quenching (QQ) sheets using real municipal wastewater was investigated. QQ media delayed fouling, but l

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b5d474a7e83f12bd803f0ec10b9149ac
https://doi.org/10.1080/08927014.2018.1515925

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Influence of the sublayer structure of thin-film composite reverse osmosis membranes on the overall water flux

Autor: Hongsik Yoon, Jae Hyun Yoo, Hee Ro Chae, Jaewoo Lee, Yong Hyup Kim, Chang Hyun Nahm, Dong Chan Choi, Chung-Hak Lee, Sang Hyun Lee, Pyung Kyu Park

Publikováno v: Environmental Science: Water Research & Technology. 4:1912-1922

We found that a support layer of a reverse osmosis (RO) membrane could have a significant effect on the membrane filtration efficiency. To be specific, we determined that the pressure drop occurring in the support layer during the RO operation can in

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https://doi.org/10.1039/c8ew00508g

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Immobilization of hydrous iron oxides in porous alginate beads for arsenic removal from water

Autor: Jeong-Won Park, Hyoeun Kwak, Chang Hyun Nahm, Abinashi Sigdel, J. H. Lim, Keehong Kim, Sojin Min, Pyung Kyu Park, Hosung Lee

Publikováno v: Environmental Science: Water Research & Technology. 4:1114-1123

For removal of arsenic in the aqueous phase, hydrous iron oxides (HIOs) were immobilized in alginate beads with enhanced porosity (designated as HIO-P-alginate beads). The HIO-P-alginate beads had macropores, observed by SEM, as well as mesopores and

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::32f109713c5fdd1d653c6d009f6cf0da
https://doi.org/10.1039/c8ew00084k

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Enhancing the Physical Properties and Lifespan of Bacterial Quorum Quenching Media through Combination of Ionic Cross-Linking and Dehydration

Autor: Jung-Kee Lee, Chang Hyun Nahm, Sung Jun Jo, Sang Hyun Lee, Jaewoo Lee, Kwang-Ho Choo, Pyung Kyu Park, Kibaek Lee, Chung-Hak Lee, Seonki Lee

Publikováno v: Journal of Microbiology and Biotechnology. 27:552-560

Quorum quenching (QQ) bacteria entrapped in a polymeric composite hydrogel (QQ medium) have been successfully applied in membrane bioreactors (MBRs) for effective biofouling control. However, in order to bring QQ technology closer to practice, the ph

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e321eb6b739cc6461105276693d26735
https://doi.org/10.4014/jmb.1611.11016

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Mitigation of Membrane Biofouling in MBR Using a Cellulolytic Bacterium, Undibacterium sp. DM-1, Isolated from Activated Sludge

Autor: Sang Hyun Lee, Jae Young Jang, Pyung Kyu Park, Chang Hyun Nahm, Hyeokpil Kwon, Kibaek Lee, Seonki Lee, Jung-Kee Lee, Chung-Hak Lee, Kwang-Ho Choo, Jaewoo Lee

Publikováno v: Journal of Microbiology and Biotechnology. 27:573-583

Biofilm formation on the membrane surface results in the loss of permeability in membrane bioreactors (MBRs) for wastewater treatment. Studies have revealed that cellulose is not only produced by a number of bacterial species but also plays a key rol

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https://doi.org/10.4014/jmb.1610.10007

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Application of quorum quenching bacteria entrapping sheets to enhance biofouling control in a membrane bioreactor with a hollow fiber module

Autor: Hyeokpil Kwon, Sang Hyun Lee, Chung-Hak Lee, Seonki Lee, Dong Chan Choi, Kibaek Lee, Pyung Kyu Park, Chang Hyun Nahm, Kwang-Ho Choo, Jung-Kee Lee

Publikováno v: Journal of Membrane Science. 526:264-271

Quorum quenching (QQ) has been recognized as an innovative approach for biofouling control in membrane bioreactors (MBRs). Recently, QQ bacteria entrapping beads (QQ-beads) have been developed and verified to have excellent anti-biofouling potential

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a1b9b90b9928aae329daf0ccc126b8e0
https://doi.org/10.1016/j.memsci.2016.12.046

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Impact of Seasonality on Quorum Quenching Efficacy and Stability for Biofouling Control in Membrane Bioreactors

Autor: Chang Hyun Nahm, Jun Seong Park, Tahir Iqbal, Pyung Kyu Park, Kibaek Lee, Kwang-Ho Choo

Publikováno v: Frontiers in Water-Energy-Nexus—Nature-Based Solutions, Advanced Technologies and Best Practices for Environmental Sustainability ISBN: 9783030130671

Low temperatures produce more biopolymers, leading to severe biofouling. Moving QQ sheets mitigate biofouling under cold weather conditions. QQ activities drop sharply with decreasing water temperatures. QQ sheets remain active during long-term field

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https://doi.org/10.1007/978-3-030-13068-8_44

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Quorum sensing: an emerging link between temperature and membrane biofouling in membrane bioreactors

Autor: Sojin Min, Hosung Lee, Chang Hyun Nahm, Kibaek Lee, Ismail Koyuncu, Pyung Kyu Park, Dowon Chae, Chung-Hak Lee, Kwang-Ho Choo, Keehong Kim

Publikováno v: Biofouling. 35(4)

Lab-scale membrane bioreactors (MBRs) were investigated at 12, 18, and 25 °C to identify the correlation between quorum sensing (QS) and biofouling at different temperatures. The lower the reactor temperature, the more severe the membrane biofouling

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https://pubmed.ncbi.nlm.nih.gov/31088168

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