**6. Conclusions**

This review provides detailed information about the current applications (2014–2018) of the membrane technology for treatment of wastewater. Generally, literature proved that different membrane technologies can be used to treat efficiently wastewaters from different activities. However, membrane fouling and membranes sensitivity to toxicity are the main limitations of the membrane technology. For this reason, Researchers has developed number of ways to overcome membrane technology. These ways include the incorporation of nanomaterials such as graphene oxide and nanometer sized metal oxides (zinc oxide), among others. In overall it can be concluded that membrane technology has been found to be a very promising method for wastewater treatment.

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