Establishment of hollow fiber membrane filtration system for drinking water production

We have developed a novel ozone resistant microfiltration (MF) module using an organic hollow fiber membrane made of polyvinylidenefluoride (PVDF). A new filtration system using this MF module together with ozone dose provided three to four times higher permeate flux compared with the filtration without ozone. The reaction of ozone with organic materials in feed water was necessary to occur on the surface of the membrane to have higher permeate flux.

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315 Establishment of ceramic membrane filtration system for drinking water production (II)

The Proceedings of the Symposium on Environmental Engineering ◽

10.1299/jsmeenv.2005.15.266 ◽

2005 ◽

Vol 2005.15 (0) ◽

pp. 266-269

Author(s):

Yuji YAMADA ◽

Kazuyuki WAKABAYASHI ◽

Hiroshi TSUCHIYA ◽

Yuji KAWASE ◽

Kimitoshi MATSUMOTO

Keyword(s):

Drinking Water ◽

Membrane Filtration ◽

Ceramic Membrane ◽

Water Production ◽

Filtration System ◽

Drinking Water Production

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Coagulation/flocculation/ultrafiltration for natural organic matter removal in drinking water production

Water Science & Technology Water Supply ◽

10.2166/ws.2004.0111 ◽

2004 ◽

Vol 4 (5-6) ◽

pp. 215-222 ◽

Cited By ~ 2

Author(s):

A.R. Costa ◽

M.N. de Pinho

Keyword(s):

Drinking Water ◽

Organic Matter ◽

Natural Organic Matter ◽

Membrane Fouling ◽

Membrane Filtration ◽

Membrane Surface ◽

Water Production ◽

Cellulose Acetate Membranes ◽

Wide Range ◽

Drinking Water Production

Membrane fouling by natural organic matter (NOM), namely by humic substances (HS), is a major problem in water treatment for drinking water production using membrane processes. Membrane fouling is dependent on membrane morphology like pore size and on water characteristics namely NOM nature. This work addresses the evaluation of the efficiency of ultrafiltration (UF) and Coagulation/Flocculation/UF performance in terms of permeation fluxes and HS removal, of the water from Tagus River (Valada). The operation of coagulation with chitosan was evaluated as a pretreatment for minimization of membrane fouling. UF experiments were carried out in flat cells of 13.2×10−4 m2 of membrane surface area and at transmembrane pressures from 1 to 4 bar. Five cellulose acetate membranes were laboratory made to cover a wide range of molecular weight cut-off (MWCO): 2,300, 11,000, 28,000, 60,000 and 75,000 Da. Severe fouling is observed for the membranes with the highest cut-off. In the permeation experiments of raw water, coagulation prior to membrane filtration led to a significant improvement of the permeation performance of the membranes with the highest MWCO due to the particles and colloidal matter removal.

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Extraction and Purification of Tea Polyphenols and EGCG

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.662.392 ◽

2013 ◽

Vol 662 ◽

pp. 392-395 ◽

Cited By ~ 1

Author(s):

Yan Hua Gao ◽

Ying Chen ◽

Zhen Xi Wang

Keyword(s):

Green Tea ◽

Silica Gel ◽

Hollow Fiber ◽

Membrane Filtration ◽

Hollow Fiber Membrane ◽

Tea Polyphenols ◽

Fiber Membrane ◽

Extraction And Purification ◽

Column Chromatographic

The extraction and purification of tea polyphenols(TP) and EGCG from green tea extraction by nano-membrane filtration, resins absorption and column chromatographic exctration(CCE) were studied. The results indicated that the concentrations of TP and EGCG respectively increased to 35.21% and 13.56% after separated by the hollow fiber membrane with the molecular of 1.0×104. And then, after the absorption of polyamide resins, the concentrations further increased to 95.51% and 52.56%. Finally, the product with the EGCG concentration of 98% was obtained by silica gel CCE method.

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Bioreduction of para-chloronitrobenzene in drinking water using a continuous stirred hydrogen-based hollow fiber membrane biofilm reactor

Journal of Hazardous Materials ◽

10.1016/j.jhazmat.2011.05.060 ◽

2011 ◽

Vol 192 (2) ◽

pp. 593-598 ◽

Cited By ~ 35

Author(s):

Siqing Xia ◽

Haixiang Li ◽

Zhiqiang Zhang ◽

Yanhao Zhang ◽

Xin Yang ◽

...

Keyword(s):

Drinking Water ◽

Hollow Fiber ◽

Hollow Fiber Membrane ◽

Biofilm Reactor ◽

Fiber Membrane ◽

Membrane Biofilm Reactor

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Effect of turbulence on hollow fiber membrane filtration in multiphase reactors

10.32657/10356/70645 ◽

2017 ◽

Author(s):

◽

Masoud Pourbozorg

Keyword(s):

Hollow Fiber ◽

Membrane Filtration ◽

Hollow Fiber Membrane ◽

Fiber Membrane ◽

Multiphase Reactors

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The Effect of Ca and Mg Ions on the Filtration Profile of Sodium Alginate Solution in a Polyethersulfone-2-(methacryloyloxy) Ethyl Phosphorylchloline Membrane

Water ◽

10.3390/w10091207 ◽

2018 ◽

Vol 10 (9) ◽

pp. 1207 ◽

Cited By ~ 6

Author(s):

Nasrul Arahman ◽

Suffriandy Satria ◽

Fachrul Razi ◽

M. Bilad

Keyword(s):

Sodium Alginate ◽

Relative Permeability ◽

Hollow Fiber ◽

Membrane Fouling ◽

Membrane Filtration ◽

Hollow Fiber Membrane ◽

Pure Water ◽

Fiber Membrane ◽

Cake Layer ◽

The Stability

The efforts to improve the stability of membrane filtration in applications for wastewater treatment or the purification of drinking water still dominate the research in the field of membrane technology. Various factors that cause membrane fouling have been explored to find the solution for improving the stability of the filtration and prolong membrane lifetime. The present work explains the filtration performance of a hollow fiber membrane that is fabricated from polyethersulfone-2-(methacryloyloxy) ethyl phosphorylchloline while using a sodium alginate (SA) feed solution. The filtration process is designed in a pressure driven cross-flow module using a single piece hollow fiber membrane in a flow of outside-inside We investigate the effect of Ca and Mg ions in SA solution on the relative permeability, membrane resistance, cake resistance, and cake formation on the membrane surface. Furthermore, the performance of membrane filtration is predicted while using mathematical models that were developed based on Darcy’s law. Results show that the presence of Ca ions in SA solution has the most prominent effect on the formation of a cake layer. The formed cake layer has a significant effect in lowering relative permeability. The developed models have a good fit with the experimental data for pure water filtration with R2 values between 0.9200 and 0.9999. When treating SA solutions, the developed models fit well with experimental with the best model (Model I) shows R2 of 0.9998, 0.9999, and 0.9994 for SA, SA + Ca, and SA + Mg feeds, respectively.

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Effect of axial variation of flux on filtration characteristics of hollow fiber membrane for drinking water treatment

Water Science & Technology Water Supply ◽

10.2166/ws.2007.137 ◽

2007 ◽

Vol 7 (4) ◽

pp. 95-101

Author(s):

Hyun-je Oh ◽

June-Seok Choi ◽

Byong-Bo Choi ◽

Sangho Lee ◽

Tae-Mun Hwang

Keyword(s):

Drinking Water ◽

Water Treatment ◽

Hollow Fiber ◽

Hollow Fiber Membrane ◽

Drinking Water Treatment ◽

Model Parameters ◽

Fiber Membrane ◽

Fiber System ◽

Axial Distribution ◽

Critical Flux

Understanding the fouling phenomena in submerged membrane systems is challenging because the efficiency of hollow fiber membrane highly depends on the dimensions of the fibers as well as filtration conditions. Thus, modeling filtration behavior of hollow fibers is important for improving the performance of hollow fiber system. In this work, a theoretical model based on critical flux concept was developed to simulate filtration resistance and axial pressure drop along the fiber in drinking water treatment. The application of a model for experimental data indicated that the model matches the experiments quite well. Thus, simulation of membrane system was carried out under various conditions using the parameters from the model fit. The axial distribution of pressure and flux affect the filtration characteristics of hollow fiber membranes. The effect of model parameters (specific cake resistance and critical flux) and module geometry were theoretically also investigated using the model.

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