Green and feasible fabrication of loose nanofiltration membrane with high efficiency for fractionation of dye/NaCl mixture by taking advantage of membrane fouling

2019 ◽  
Vol 136 (18) ◽  
pp. 47438 ◽  
Author(s):  
Lingdi Shen ◽  
Peiyun Li ◽  
Tonghui Zhang
Keyword(s):  
Membrane Fouling ◽  
High Efficiency ◽  
Nanofiltration Membrane

Studies on nanofiltration membrane fouling in the treatment of water solutions containing humic acids

Desalination ◽  
2005 ◽  
Vol 178 (1-3) ◽  
pp. 171-178 ◽  
Author(s):  
Zhi Wang ◽  
Yuanyuan Zhao ◽  
Jixiao Wang ◽  
Shichang Wang
Keyword(s):  
Humic Acids ◽  
Membrane Fouling ◽  
Nanofiltration Membrane ◽  
Water Solutions

scholarly journals Design of a Novel Membrane Draft Tube Jet Loop Reactor (MDJLR) and Treatment of Slaughterhouse Wastewater

Membranes ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 155
Author(s):  
Burhanettin Farizoğlu ◽  
Süleyman Uzuner
Keyword(s):  
Membrane Fouling ◽  
High Efficiency ◽  
Draft Tube ◽  
Membrane Surface ◽  
Membrane Bioreactors ◽  
Operating Conditions ◽  
Membrane Module ◽  
Circulation Rate ◽  
Slaughterhouse Wastewater ◽  
Loop Reactor

The most important obstacle to the widespread use of membrane bioreactors (MBRs) is membrane fouling. In this study, a high-efficiency compact MBR was developed. Therefore, the draft tube of the jet loop reactor (JLB) was planned for use as a membrane module. The high-velocity jet streams, which are present according to the nature of the JLBs, provide high crossflow (cut-off force) on the membrane surface. Thus, the produced membrane module is operated in submerged membrane mode. This enhanced JLB modification is named the membrane draft tube jet loop reactor (MDJLR). This new system has a KLa value of 139 h−1 (at E/V of 2.24 kW m−3). In the next stage, treatment of slaughterhouse wastewater with the MDJLR was carried out. Under the 5.5 kg COD m−3 d−1 loading rate, efficiencies over 97% were achieved. The system operated continuously for 50 days without membrane backwashing or cleaning. During this period, fluxes of 3 L m−2·h−1 were approximately obtained at operating conditions of 850 mg L−1 MLSS (mixed liquor suspended solids) concentration, 1 bar suction pressure (∆P), and 3000 L h−1 circulation rate. This developed MDJLR will make jet loop membrane bioreactors (JLMBRs) and MBRs more compact and improve their performance.

Electrodialysis with nanofiltration membrane (EDNF) for high-efficiency cations fractionation

2016 ◽  
Vol 498 ◽  
pp. 192-200 ◽  
Author(s):  
Liang Ge ◽  
Bin Wu ◽  
Qiuhua Li ◽  
Yaqin Wang ◽  
Dongbo Yu ◽  
...  
Keyword(s):  
High Efficiency ◽  
Nanofiltration Membrane

Reduction of nanofiltration membrane fouling by UV-initiated graft polymerization technique

2010 ◽  
Vol 355 (1-2) ◽  
pp. 133-141 ◽  
Author(s):  
M.N. Abu Seman ◽  
M. Khayet ◽  
Z.I. Bin Ali ◽  
N. Hilal
Keyword(s):  
Membrane Fouling ◽  
Graft Polymerization ◽  
Nanofiltration Membrane

Anti-fouling graphene oxide based nanocomposites membrane for oil-water emulsion separation

2017 ◽  
Vol 77 (5) ◽  
pp. 1179-1185 ◽  
Author(s):  
Yang Feng ◽  
Zhiwen Wang ◽  
Ruixue Zhang ◽  
Yuanyuan Lu ◽  
Yuqing Huang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Membrane Fouling ◽  
Self Assembly ◽  
High Efficiency ◽  
Rejection Rate ◽  
Contact Angles ◽  
Water Contact ◽  
Water Emulsion ◽  
Emulsion Separation ◽  
Oil Water

Abstract Anti-fouling copper hydroxide nanowires (CHNs)-graphene oxide (GO) nanocomposites membrane was fabricated by a vacuum-assisted filtration self-assembly process. CHNs were covered on the surface and inserted into the interlayers of the GO nanosheets to form the rough surface and nanostructure channels. The membrane with water contact angles (CAs) of 53° and oil CAs of 155° exhibited superior stability, hydrophilicity, underwater superoleophobicity and ultralow oil adhesion, and hence it could separate the oil-water emulsion with a high efficiency of >99%. This membrane showed the combined advantages of high oil rejection rate and ultralow membrane fouling, making it promising for practical oil-water emulsion separation applications.

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