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Membrane Water Treatment
  Volume 8, Number 1, January 2017, pages 89-112
DOI: http://dx.doi.org/10.12989/mwt.2017.8.1.089
 


Pre-treatment of textile wastewaters containing Chrysophenine using hybrid membranes
Arash Yunessnia lehi, Seyed Jalaleddin Mousavirad and Ahmad Akbari

 
Abstract
    Dyeing wastewaters are the most problematic wastewater in textile industries and also, growing amounts of waste fibers in carpet industries have concerned environmental specialists. Among different treatment methods, membrane filtration processes as energy-efficient and compatible way, were utilized for several individual problems. In this research, novel hybrid membranes were prepared by waste fibers of mechanical carpets as useful resource of membrane matrix and industrial graphite powder as filler to eliminate Chrysophenine GX from dyeing wastewater. These membranes were expected to be utilized for first stage of hybrid membrane filtration process including (adsorption-ultrafiltration) and nanofiltration in Kashan Textile Company. For scaling of membrane filtration process, fouling mechanism of these membranes were recognized and explained by the use of genetic algorithm, as well. The graphite increased rejection and diminished permeate flux at low concentration but in high concentration, the performance was significantly worsened. Among all hybrid membranes, 18% wt. waste fibers-1% wt. graphite membrane had the best performance and minimum fouling. The maximum pore size of this optimum membrane was ranged from 16.10 to 18.72 nm
 
Key Words
    chrysophenine GX; fouling mechanisms; genetic algorithm; hybrid membranes; wastage fibers
 
Address
Arash Yunessnia lehi:Institute of Nanoscience and Nanotechnology, University of Kashan, P.O. Box: 87317-53153, Kashan, Iran
Seyed Jalaleddin Mousavirad:Department of Computer Engineering, Faculty of Computer & Electrical Engineering, University of Kashan, Kashan, Iran
Ahmad Akbari:Institute of Nanoscience and Nanotechnology, University of Kashan, P.O. Box: 87317-53153, Kashan, Iran/Department of Carpet, Faculty of Architecture & Art, University of Kashan, Kashan, Iran
 

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