List of Articles Nanofiltration

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  1 - Investigation of Nanofiltration Process in Nickel, Chromium and Cadmium Removal from Industrial Wastewater
  Amir Hessam Hassani seyed mehdi Borgheie Maryam Mohammady
  With developing technologies and various industrial activities, the produced wastewater from industrial activities makes a serious threat for environment. When this kind of wastewater, which includes heavy metals from miscellaneous industrial activities, enters to envir More

  With developing technologies and various industrial activities, the produced wastewater from industrial activities makes a serious threat for environment. When this kind of wastewater, which includes heavy metals from miscellaneous industrial activities, enters to environment prepares adverse effects on human beings and food chain organisms. There are many investigations about heavy metals removal from industrial wastewater based on precipitation, ion exchange, and biological processes. However, these days, the performance of membrane processes such as nanofiltration is focused as an appropriate process and many investigators are working on it. The main purpose of this work is the evaluation of nanofiltration process on heavy metals such as nickel, chrome, and cadmium from synthetic industrial wastewater. Also, the effects of operating parameters on nanofiltration process are investigated. In this work, a nanofiltration pilot with capacity of 40 m3/day, which consists of I and 5 micron filters and a permeable polyamide membrane (NF90- 4040), is used and the effect of heavy metals concentration increase on the removal efficiency of one or mixed of all heavy metals are evaluated. It is concluded that the performance of nanofiltration with increase of heavy metals concentration improved and the maximum heavy metals removal efficiency is occurred when the concentration of heavy metals is equal to 100 mg/L. The average removal efficiency of one and mixed of all heavy metals is 95.4 and 97.5%, respectively. Moreover, the operating pressure of nanofiltration process with increase of heavy metals concentration, decrease but the recovery rate of membrane increase. The average recovery rate of membrane in one and mixed of all heavy metals removal condition is 72.8 and 72.4%, respectively. Also, among the heavy metals the maximum recovery rate and the minimum operating pressure in nanofiltration process belong to cadmium. Manuscript profile
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  2 - Investigation of acetone as co-solvent on performance PES nanofiltration membrane
  Hamideh Aminifard Abdolreza Moghadassi Ehsan Bagheripour
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  3 - Fabrication and charge modification of ceramic membranes using copper Nanoparticles for desalination
  Mohamad Mahdi Zerafat Majid Shokri Doodeji Omid Nejadian
  10.22034/jna.2017.542977.1027
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  4 - Fabrication and Charge Modification of Ceramic Membranes Using Copper Nanoparticles for Desalination
  Majid Shokri Doodeji Mohamad Mahdi Zerafat Omid Nejadian
  10.22034/jna.2017.539368
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  5 - A review of polysulfone and polyethersulfone based mixed matrix nanofiltration membranes/carbon nanoparticles
  Nader Gholami Hossein Mahdavi
  Although the membrane technology has advantages such as the high capability of separation, flexibility of operation, efficiency, etc. compared to conventional methods, fouling is the main limitation for the further use of membrane technology, mainly because of the inher More

  Although the membrane technology has advantages such as the high capability of separation, flexibility of operation, efficiency, etc. compared to conventional methods, fouling is the main limitation for the further use of membrane technology, mainly because of the inherent hydrophobicity of membrane materials. To overcome this drawback, nanocomposite membranes are used. Among membrane processes, nanofiltration has applications in groundwater, surface water and wastewater treatment as well as pre-desalination operations. Since NF process is performed at a lower pressure, it is a much more energy efficient process. In this review, modification of polysulfone/polyatersulfone membranes is investigated with regards to anti-fouling performance. The mechanism of fouling reduction clearly shows that surface hydrophilicity improves at the polysulfone/polyatersulfone membranes, based on different membrane modification methods. In addition, the fabrication of nanocomposite membranes resulting from the participation of nanoparticles in the polymeric matrix mixed membrane, their properties and applications using organic fillers (such as graphene and carbon nanotubes) have been thoroughly studied.Furthermore, the characterization techniques applied for modified membranes have been discussed.This comprehensive study concludes with some recommendations for future research and development of NF membranes.   Manuscript profile