Membrane filtration of natural organic matter: initial comparison of rejection and flux decline characteristics with ultrafiltration and nanofiltration membranes

Cho, Jaeweon; Amy, Gary L.; Pellegrino, John

doi:10.1016/s0043-1354(98)00498-9

Cited by 261 publications

(100 citation statements)

References 14 publications

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“…The NF 90 membrane is reported in the literature as having a top layer of polyamide composition (Cabral Goncalves et al, 2005). Polyamide compounds have amide and carboxyl groups bound to the aromatic rings, which tend to reduce membrane hydrophobicity (Cho et al, 1999). Characteristics of the nanofiltration membrane used in this work are shown in Table (2).…”

Section: Methodsmentioning

confidence: 99%

Nanofiltration process on dye removal from simulated textile wastewater

Hassani

Mirzayee

Nasseri

et al. 2008

Int. J. Environ. Sci. Technol.

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Dyestuffs removal from industrial wastewater requires special advanced technologies, since dyes are usually difficult to remove by biological methods. In this study nanofiltration process was used for removal of different dyestuffs from solutions. The rate of dye removal by spiral wound nanofiltration membrane in film thin composite MWCO=90 Dalton, was evaluated for four classes of dyes acidic, disperse, reactive and direct in red and blue dyes medium. Dye absorbance was measured by spectrophotometric method (2120 Standard Method 1998). Effects of feed concentration, pressure and total dissolved solids concentration were also studied. Results showed that increasing dye concentration lead to higher color removal up to 98 % and at different pressures for acidic and reactive blue were up to 99.7 %. Different types of dyes had no effect on dye removal and permeate flux. During 2 h.of the operation time, permeate flux decline was increased. Permeate fluxes for different types of red dyes were from 16.6 to 12.6 (L/m 2 /h.) and for blue dyes were from 16.6 to 10.45 (L/m 2 /h.). Presence of sodium chloride in dye solutions increased dye rejections nearby 100 %. Chemical oxygen demand removal efficiencies for reactive blue, disperse blue, direct and disperse red dyes were also approximately 100 %.

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Section: Methodsmentioning

confidence: 99%

Nanofiltration process on dye removal from simulated textile wastewater

Hassani

Mirzayee

Nasseri

et al. 2008

Int. J. Environ. Sci. Technol.

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“…In past research, it has been demonstrated that some micropollutants such as pesticides (e.g., atrazine) can be effective by NF membranes Kiso et al, 2000;Cho et al, 1999;Kiso et al, 2002). Pesticide rejection by NF and RO membranes is thought to be influenced by compound physical-chemical properties (e.g., molecular size, solubility, diffusivity, polarity, hydrophobicity, and charge), membrane properties (e.g., permeability, pore size, hydrophobicity, and charge), and membrane operating conditions (e.g., flux, transmembrane pressure, and recovery).…”

Section: Micropollutants Removal Using Nfmentioning

confidence: 99%

Micropollutant Degradation Mechanism

Tepuš¹,

Petrinić²,

Simonič³

2011

Pesticides - Formulations, Effects, Fate

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“…Ultrafiltration, with a molecular weight cut-off (MWCO) bigger than 10 kDa, has little effect on the organic content if not coupled with a chemical pre-treatment [5,6]. Nanofiltration, on the other hand, does not require pre-treatment and may remove around 80% of the organics [7], 90% of the color [8,9], and reduce low molecular weight substances by 90% [10].…”

Section: Introductionmentioning

confidence: 99%

Feasibility Study of Advanced NOM-Reduction by Hollow Fiber Ultrafiltration and Nanofiltration at a Swedish Surface Water Treatment Plant

Lidén

Persson

2016

Water

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Abstract:Membrane technology, i.e., ultrafiltration and nanofiltration, is growing in popularity, as it is a space efficient alternative for surface water treatment. Two types of hollow fiber membranes were tested in a fully equipped and automated pilot at a Swedish water treatment plant. Raw water was treated by a nanofilter and by coagulation before an ultrafilter. Operation parameters recorded during these trials have been the basis for cost estimations and assessments of environmental impact, comparing the two membrane modules to the existing conventional treatment. The membranes required lower chemical consumption, but led to increased costs from membrane modules and a higher energy demand. Compared to the existing treatment (0.33 €/m 3 ), the operational costs were estimated to increase 6% for ultrafiltration and 30% for nanofiltration. Considering the low emissions from Nordic energy production, the membrane processes would lower the environmental impact, including factors such as climate and ecosystem health. Greenhouse gas emissions would decrease from 161 g CO 2 -eq/m 3 of the existing process, to 127 g CO 2 -eq/m 3 or 83 g CO 2 -eq/m 3 for ultrafiltration and nanofiltration, respectively. Lower chemical consumption and less pollution from the sludge leaving the water treatment plant lead to lower impacts on the environment.

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Membrane filtration of natural organic matter: initial comparison of rejection and flux decline characteristics with ultrafiltration and nanofiltration membranes

Cited by 261 publications

References 14 publications

Nanofiltration process on dye removal from simulated textile wastewater

Nanofiltration process on dye removal from simulated textile wastewater

Micropollutant Degradation Mechanism

Feasibility Study of Advanced NOM-Reduction by Hollow Fiber Ultrafiltration and Nanofiltration at a Swedish Surface Water Treatment Plant

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