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AuthorAshfaq, Mohammad Yousaf
AuthorAl-Ghouti, Mohammad
AuthorZouari, Nabil
AuthorQiblawey, Hazim
Available date2020-10-22T07:00:23Z
Publication Date2020
Publication NameQatar University Annual Research Forum & Exhibition 2020
CitationAshfaq M.Y., AlGhouti M., Zouari N., Qiblawey H., "Development of Polymer Modified Graphene Oxide Nanocomposite Membranes to Reduce both Scaling and Biofouling", Qatar University Annual Research Forum and Exhibition (QUARFE 2020), Doha, 2020, https://doi.org/10.29117/quarfe.2020.0064
URIhttps://doi.org/10.29117/quarfe.2020.0064
URIhttp://hdl.handle.net/10576/16599
AbstractIn seawater reverse osmosis (SWRO), membrane scaling is one of the major issues affecting its widespread application in the desalination industry. In this research, the effect of concentration of calcium and sulfate ions from 20 to 150 mM and temperature from 5 to 35?C on calcium sulfate scaling of reverse osmosis (RO) and Graphene oxide functionalized RO membranes was investigated. It was found that increase of concentration as well as temperature enhances the mineral scaling, where morphology of crystals varies from rod shaped to rosette structures. It was also observed that commonly found seawater bacteria can use antiscalants as an energy/carbon source thereby degrading them and reducing their efficiency to reduce mineral scaling. Moreover, bacteria were found to be capable of inducing/mediating calcium sulfate precipitation on RO membranes, further enhancing the mineral scaling. Therefore, it was important to modify RO membranes capable of simultaneously reduce both mineral scaling and biofouling. For this purpose, RO membrane was modified with antibacterial graphene oxide and polymer antiscalants using microwave radiation technique. It was found that the modified membranes were able to inhibit microbial growth up to 95%, while, mineral scaling was also reduced by 97%. Hence, it was concluded that the coating of polymer modified graphene oxide nanocomposites on RO membranes can simultaneously reduce both biofouling and scaling. So far, such dual characteristics of modified membranes have not been reported in the literature.
Languageen
PublisherQatar University Press
SubjectBiofouling; Scaling; Reverse osmosis; Graphene oxide; Antiscalants
TitleDevelopment of Polymer Modified Graphene Oxide Nanocomposite Membranes to Reduce both Scaling and Biofouling
TypePoster
dc.accessType Open Access


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