Novel sulfonated thin-film composite nanofiltration membranes with improved water flux for treatment of dye solutions

Liu, Yang; Zhang, Shuling; Zhou, Zheng; Ren, Jiannan; Geng, Zhi; Luan, Jingyi; Wang, Guibin

doi:10.1016/j.memsci.2011.12.045

Cited by 93 publications

(40 citation statements)

References 34 publications

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“…This indicates that the PES-NF was more hydrophobic that the PA-NF membrane. Generally speaking, the chemical components in a PA-NF affecting the hydrophilicity of the membrane are the amide bonds, amine end groups, free carboxylic acid groups (an unreacted acyl chloride), and carboxylic acid end groups [17]. However, the molecular weight cut-off of the membranes used in the present study was in the increasing order of: PA-NF < PES-NF, which was not in agreement with water fluxes obtained.…”

Section: Permeate Flux and Observed Rejectioncontrasting

confidence: 80%

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Performance of polyamide and polyethersulfone membranes in the nanofiltration of reactive dye-salt mixtures on pilot scale

Patel¹,

Nath²

2014

Desalination and Water Treatment

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A B S T R A C TThin film composite polyamide (PA-NF) and polyethersulfone (PES-NF) membranes were used to study their performance towards reclamation of an aqueous solution of reactive red 198 and NaCl in a nanofiltration pilot plant. It was found that there were significant differences between the performance of the two membranes, and that the membrane properties played an important role in the dye removal rate, stable permeate flux, and salt rejection of the membrane. The experimental results showed that both the permeate flux and observed rejection decreased with an increase in dye as well as salt concentration in the feed. The maximum flux obtained with PA-NF membrane at 12.5 mg/l feed concentration was 11.4 Â 10 À6 m 3 /m 2 s, whereas with PES-NF the flux was 5.5 Â 10 À6 m 3 /m 2 s. The flux decline as a function of time for PES-NF membrane was much less compared to PA-NF. The contact angles of PA-NF and PES-NF membranes were found out to be 52 o and 73 o , respectively. Atomic force microscopy images revealed that the PA-NF membrane surface had more roughness than that of PES-NF.

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Section: Permeate Flux and Observed Rejectioncontrasting

confidence: 80%

“…This morphological difference is likely caused by differences in the diffusion rate of amine monomers during the interfacial polymerization [17]. The PES-NF membrane surface is relatively smooth, compared to the PA-NF membrane.…”

Section: Sem Micrograph Analysismentioning

confidence: 99%

Performance of polyamide and polyethersulfone membranes in the nanofiltration of reactive dye-salt mixtures on pilot scale

Patel¹,

Nath²

2014

Desalination and Water Treatment

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“…Jenis membran yang efektif dan biasa digunakan untuk mereduksi warna adalah membran nanofiltrasi dan ultrafiltrasi (Liu et al, 2012dan Dong et al, 2015. Membran ultrafiltrasi dan nanofiltrasi efektif untuk menghilangkan warna akan tetapi memiliki beberapa kelemahan yaitu adanya batas waktu penggunaan karena dapat terjadi fouling pada membran dan mahalnya biaya pengadaan membran.…”

Section: Pendahuluanunclassified

Pemanfaatan Zeolit Dan Silika Sebagai Material Membran Filtrasi Untuk Menurunkan Konsentrasi Warna Limbah Cair Batik

Pramitasari

Damayanti

2017

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AbstrakPembuangan limbah cair indusri yang tidak sesuai dengan baku mutu secara langsung ke badan air dapat menyebabkan pencemaran. Salah satu industri yang menghasilkan limbah cair adalah industri batik. Limbah industri batik memiliki konsentrasi warna yang memerlukan pengolahan sebelum dibuang ke badan air. Salah satu teknologi pengolahannya adalah menggunakan membran filtrasi. Untuk memperkecil biaya pembuatan dan meningkatkan masa pakai membran filrasi maka digunakan zeolit dan silika sebagai bahan pembuat membran. Pengujian membran dilakukan dengan reaktor cross flow untuk meminimalkan biaya operasi. Tujuan penelitian ini adalah untuk menentukan perbandingan massa penambahan silika, kecepatan centrifuge dan persen volume limbah cair untuk menurunkan konsentrasi warna pada limbah cair batik dengan mengukur nilai rejeksi terhadap konsentrasi warna. Nilai rejeksi membran terhadap konsentrasi warna sebersar 92,68% diperoleh pada membran dengan massa penambahan silika 3%, keceparan centrifuge 600 RPM dan persen limbah cair 100% .

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“…PES beads were prepared with the conventional immersion precipitation phase inversion method [22,25] . Homogeneous casting solution was prepared by dissolving 4 g of PES and 2 g of PVP in 20 mL of DMF under constantly stirring at room temperature(about 18 °C).…”

Section: Preparation Of Pes Beadsmentioning

confidence: 99%

“…PES has exceptional hydrolysis resistant, dimensional stability and mass retention under Vol.31 erosive water condition [21,22] , such as boiling water or electroplating rinse wastewater [23] , which make it to be an ideal candidate for a durable bioreactor. By controlling the immersion precipitation parameters, the PES microarchitecture [24,25] could be adjusted to have an internal cavity of 20 μm in diameter. Moreover, the porous structure facilitates both the cell distribution in the beads and the mass transfer of nutrients and oxygen [13] , which is critical for both the cell viability and biocatalyst functions.…”

Section: Introductionmentioning

confidence: 99%

Novel porous polyethersulfone beads as matrix to immobilize Comamonas testosteroni sp. bdq06 in quinoline biodegradation

Geng

Zhu

et al. 2015

Chem. Res. Chin. Univ.

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Novel matrix beads for the immobilization of strain Comamonas testosteroni sp. bdq06 to degrade quinoline were fabricated from polyethersulfone(PES). The beads have an average size of 3 mm and a surface dense layer of 20 microns. To help adhesion and proliferation of bacterial cells, the surfaces of the PES beads were etched, and numerous holes about 1.5 micrometers in diameter were generated as tunnels for cell colonizing in the larger internal cavities of about 5 micrometers in diameter. The quinoline degradation was remarkably enhanced by the cells immobilized in PES beads compared with that by the free cells at pH 5.0 or 10.0 and a temperature of 40 °C. The enhanced degradation of quinoline was contributed to the biofilm on the surface of PES beads, resulting in the significant reduction of retention time from 9 h to 2 h. Furthermore, the beads remain intact after the ultrasonic treatment of them for 30 min or recycling 50 times, indicating that they have excellent mechanical strength, flexibility and swelling capacity. Thus, PES beads have great potential to be matrix for the cell immobilization in bioaugmentation.

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Novel sulfonated thin-film composite nanofiltration membranes with improved water flux for treatment of dye solutions

Cited by 93 publications

References 34 publications

Performance of polyamide and polyethersulfone membranes in the nanofiltration of reactive dye-salt mixtures on pilot scale

Performance of polyamide and polyethersulfone membranes in the nanofiltration of reactive dye-salt mixtures on pilot scale

Pemanfaatan Zeolit Dan Silika Sebagai Material Membran Filtrasi Untuk Menurunkan Konsentrasi Warna Limbah Cair Batik

Novel porous polyethersulfone beads as matrix to immobilize Comamonas testosteroni sp. bdq06 in quinoline biodegradation

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