Home > Press > Heightened Efficiency in Purification of Wastewater Using Nanomembranes
Abstract:
Iranian researchers from Amirkabir University of Technology produced a nanomembrane which can purify industrial wastewater and polluted water with over 90% efficiency.
Heightened Efficiency in Purification of Wastewater Using Nanomembranes
Tehran, Iran | Posted on March 3rd, 2015The production of the nanomembrane is easy and cost-efficient and reduces the cost of wastewater purification process due to its high efficiency and long lifetime.
The removal of heavy metal ions, specially mercury and lead, from industrial wastewater is among the important challenges in environmental issues due to their toxicity and harmful effects on the environment.
Results of the research showed that the synthesized membrane has appropriate permeability and it is able to separate significant amount of heavy metals from the wastewater (more than 95%). In addition, industrial samples have confirmed the desirable performance of the membrane in the purification of industrial wastewater. Therefore, this achievement can be used in the purification of industrial wastewater and polluted water due to the wide range of the application of membrane processes.
The produced membrane is able to carry out the separation process directly through a single-step process due to its high sorption properties while the normal removal methods, including chemical deposition or the addition of sorbents to the wastewater, usually require a few steps and they include the addition of another substance to the environment.
In this project, the membrane rejection has been increased for heavy metals with conserving its permeability by combining the sorption mechanism by the sorbent and the membrane rejection. In addition, in case the water comes back to the production cycle, the cost of consumed water decreases by controlling the consumption of water.
Results of the research have been published in Industrial & Engineering Chemistry Research, vol. 54, issue 1, 2015, pp. 502-513.
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