NAMS 2002 Workshop - ICOM 2008

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Preferential removal of hydrophobic NOM fraction was achieved by GAC adsorption compared to transphilic and hydrophilic fractions. This is in agreement with the reported result that the humic fraction (hydrophobic NOM) was preferentially removed by GAC adsorption to the non-humic fraction (Krasner and Amy, 1995). A significant difference in NOM removal between coagulation and the GAC adsorption was found in terms of hydrophobic rejection: less than 30% by coagulation vs. 80% by GAC adsorption. Also small MW fraction of NOM was removed by GAC adsorption, while large MW fraction was mostly removed by membrane filtration. Unlike the coagulation results, medium molecular weight NOM (1k ~ 3k Da) was also effectively removed by GAC filter, which might be caused by the sieving mechanism of filter bed. In terms of disinfection by-product formation potential (DBPFP) removal, both of THMFP (trihalomethane formation potential) and HAAFP (haloacetic acid formation potential) were more effectively removed in the GAC column than coagulation or microfiltration membrane. Especially, the removal of bromide combined DBP (dichlorobromomethane, dibromo- chloromethane) was achieved only in the GAC adsorption due to the low molecular weight of their precursors. When plotting the ultraviolet absorbance at 254 nm, correlations appeared between the dissolved organic carbon concentration and DBPFP. Both of DOC and THMFP concentration profile showed a similar trend, also the most of organic carbon and THMFP were preferentially removed by GAC adsorption. These correlations can be used for the selective operation of post treatment for microfiltration effluent with high DBPFP. The low R2 value (0.6) of correlation between UVA254 and DBPFP might be due to the low DOC/UVA value (22.8~86.7 mg/L/cm-1) of tested water compared to the previously reported values (Kim et al., 2007). Summarizing the experimental results, coagulation and GAC adsorption are playing a different role in NOM removal. Coagulation preferentially removed hydrophilic, large molecular weight, and THMFP related NOM, while GAC adsorption was responsible for hydrophobic, small molecular weight, and HAAFP related NOM removal. Therefore, combination of coagulation and GAC adsorption seemed to be an essential process to minimize the DBP concentration of treated water in membrane coupled drinking water treatment process.
Polymeric Membranes II – 1 – Keynote Wednesday July 16, 9:30 AM-10:15 AM, Moloka’i Optical Resolution with Chiral Polymaide Membranes M. Nakagawa, Kyoto Institute of Technology, Kyoto, Japan Y. Ikeuchi, Kyoto Institute of Technology, Kyoto, Japan M. Yoshikawa (Speaker), Kyoto Institute of Technology, Kyoto, Japan - masahiro@kit.ac.jp Chirality plays an important role in biological processes. Production of enantiomerically pure compounds has attracted much attention in pharmaceutical industry, agrochemical applications, perfume production, food preparation, and so forth. There are a couple of ways to obtain optically pure enantiomers; one is asymmetric synthesis, the other resolution of racemates. In spite of the advances in asymmetric synthesis of pure enantiomers, the resolution of racemates is still the main method for the production of pure enantiomers in industry. Among chiral separation technologies, membrane processes are regarded as economically and ecologically competitive to other conventional chiral separation technologies. With the exception of optical activity, enantiomers show identical physicochemical properties. From this, physical stereoselectivity is an important factor for chiral recognition and chiral separation. To this end, novel polyamides with chiral environment were synthesized from aromatic diamines and the derivative of glutamic acids. Membranes with chiral environment were prepared from the present chiral polyamides. They showed chiral separation ability. Those abilities were dependent on the absolute configuration of constitutional repeating unit of chiral polyamides. The present results suggest that chiral polyamide membranes have potential to separate racemic enantiomers. The present results indicate the great possibility for practical applications.
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ICOM 2008 Oral Presentation Proceed
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Professor Yoram Cohen Professor Joh
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ICOM 2008 Staff: The University of
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ICOM 2008 Workshop Schedule: Saturd
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Monday, July 14 - Afternoon Session
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Tuesday, July 15 - Afternoon Sessio
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8:15AM 8:35AM EMS Barrer Prize (Mau
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Friday, July 18 - Morning Sessions
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Oral Presentation Abstracts Morning
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Gas Separation I - 1 - Keynote Mond
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esulting permeability selectivity o
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chain packing. To ensure a well pha
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Gas Separation I - 5 Monday July 14
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satisfactory way the corresponding
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Drinking and Wastewater Application
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an adjusted water management in the
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prospect for new energy sources as
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oxygen removal to the desired pH. C
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(Cl - , SO4 2- , As(V)) and water t
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[1] R. Lima de Miranda, J. Kruse, K
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Polymeric Membranes I - 4 Monday Ju
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Polymeric Membranes I - 5 Monday Ju
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Biomedical and Biotechnology I - 1
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Acknowledgments The Authors acknowl
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isolation of CD34+ cells was achiev
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membranes were then challenged with
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in crossflow mode operation were in
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hydroxide. For Mg/Ca = 0, the fouli
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improvement of filterability also t
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scale where fouling rates are commo
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observed in two subsequence phenome
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Membrane Modeling I - Fundamental A
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Membrane Modeling I - Fundamental A
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of the impact of the operating para
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Oral Presentation Abstracts Afterno
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Hybrid and Novel Processes I - 2 Mo
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Arora, M.B., J.A. Hestekin, S.W. Sn
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Conclusions Reverse electrodialysis
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energy recovery. This is a remarkab
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eaction with mediator due to the co
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Nanofiltration and Reverse Osmosis
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4.3x10 -6 to 7.4x10 -6 cm 2 /s. Bas
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The development of these membranes
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permeability, defined as water perm
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supports including charged (PSF/SPE
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[4] L. M. Robeson, Journal of Membr
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y conventional polymers and provide
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[3] P.M. Budd, K.J. Msayib, C.E. Ta
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Nanostructured Membranes I - 5 Mond
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Fuel Cells I - 1 Monday July 14, 2:
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investigated at first. As a result,
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Desalination I - 2 Monday July 14,
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Composite Polymeric Membrane Format
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NAMS Alan S. Michaels Award - 1a Tu
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NAMS Alan S. Michaels Award - 2 Tue
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opportunities for improving membran
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NAMS Alan S. Michaels Award - 4b Tu
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[4] K. Vanherck et al. Accepted for
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accumulation had a strong effect on
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and, if so, to develop correlations
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non-porous and porous membranes are
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[2] Palmeri, J., Sandeaux, R. Sande
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fouling. Information obtained from
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This work performed under the auspi
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etween Ru(bi-pyridine)3 2+ and meth
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[1] M. Barboiu, C. Luca, C. Guizard
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Nanostructured Membranes II - 5 Tue
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Nanostructured Membranes II - 6 Tue
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than 10 nm. XRD data suggest that t
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Pervaporation and Vapor Permeation
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ethanol/butanol (non solvent) combi
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forward osmosis, the RO process is
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Osmotically Driven Membrane Process
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References: [1] Stupp, S. I.; Lebon
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temperatures might bring about the
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References [1] S. Benita, Microenca
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solvent, were investigated (where a
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ease of manipulation as this allows
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Horizontal shrinkage does not have
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Absorption of water was determined
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Gas Separation II - 1 - Keynote Tue
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Gas Separation II - 2 Tuesday July
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concentration. These results are co
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Gas Separation II - 5 Tuesday July
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will be shown that homogeneous film
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which can adsorb on the surface of
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were collected, the viable bacteria
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pressure, and permporosimetry with
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Inorganic Membranes I - 3 Tuesday J
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Inorganic Membranes I - 4 Tuesday J
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Page 239 and 240: Membrane Fouling - UF & Water Treat
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Page 313 and 314: Membrane Modeling III - Process Sim
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Page 329 and 330: Gas Separation IV - 2 Thursday July
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EMS Barrer Prize - 1b Thursday July
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EMS Barrer Prize - 3 Thursday July
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EMS Barrer Prize - 4b Thursday July
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EMS Barrer Prize - 5 Thursday July
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therapy options have been modelled
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Ultra- and Microfiltration II - Pro
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in the vicinity of the rising bubbl
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of feed water ionic strength) on re
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technology that has gained growing
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Optimize polymeric membranes for sa
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Inorganic Membranes II - 2 Thursday
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confirms that the carbon dioxide pe
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permeability, stability issues comp
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Fuel Cells II - 2 Thursday July 17,
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5. Conclusion In this work, the evo
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Oral Presentation Abstracts Afterno
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an essentially pure H2 product is c
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In the presentation, we will presen
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was observed, indicative of the sim
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References Arora, M.B., J.A. Hestek
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performance of fibers is analyzed a
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Membrane Fouling III - RO & Biofoul
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[4] H. Noureddini, Book of Abstract
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component (PX, OX) separation via p
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Generally these results were in goo
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introduction of methyl groups into
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separation quality (10 µS/cm) and
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Desalination II - 3 Thursday July 1
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drop are linearly related (although
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antiscalant oxidation has been limi
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Membrane and Surface Modification I
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oth 15±5 kDa, which suggests that
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Atomic Force Microscopy (AFM), and
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y single gas permeation experiments
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PDMS toplayers were only partially
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noting that cross-linking agents co
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such extended parameter space in th
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Hybrid Membranes - 6 Thursday July
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Plenary Lecture III Friday July 18.
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Gas Separation V - 1 - Keynote Frid
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References: [1] H. Lin, E. Van Wagn
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elative contributions of Fickian di
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Gas Separation V - 4 Friday July 18
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Gas Separation V - 6 Friday July 18
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Electron Microscopy (TEM) analyses
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- Hybrid RO train: A hybrid RO trai
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concentration as well as on the sod
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scaling deposits in the DCMD device
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Silica colloidal solution with diff
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Membrane Fouling IV - RO & Desalina
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Polyacrylonitrile (PAN) UF membrane
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the polymer dope was PEI (12 wt%),
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Inorganic Membranes III - 1 - Keyno
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Inorganic Membranes III - 2 Friday
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CO2/H2 selectivity at high temperat
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ammonia complexes in aqueous soluti
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possible to have a membrane capable
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fired boiler flue gas, SOx and merc
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EPR/Ago/p-benzoquinone composite sh
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elated to the presence of free elec
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surroundings. When the temperature
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that no absorbent was detected in t
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days of filtration from 120 to 7-10
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was performed to restore membrane f
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with the SRT of 65 days, no correla
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Results Critical flux measurements
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MLSS is not directly proportional t
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Fuel Cells III - 2 Friday July 18,
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Fuel Cells III - 4 Friday July 18,
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Ultra- and Microfiltration III - Me
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can be deduced from the imaginary p
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membranes. The analysis of the ligh
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Membrane Contactors - 2 Friday July
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absorption liquid in the pores of t
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Packaging and Barrier Materials - 1
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Historically, all the approaches de
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