1) The document discusses using graphene oxide nanoplatelets to coat hollow fiber membranes used in membrane bioreactors to treat water. 2) Experiments showed that coating membranes with about two grams of graphene oxide improved water flux the most by reducing fouling. Further exposing the graphene oxide coating to UV light improved water flux even more. 3) Testing the coated membranes with various foulants like proteins and salts found in wastewater, as well as sewage water, demonstrated that the graphene oxide coatings decreased the loss of water flux over time and reduced the pressure needed for filtration compared to uncoated membranes.