Date of Graduation
5-2020
Document Type
Thesis
Degree Name
Master of Science in Microelectronics-Photonics (MS)
Degree Level
Graduate
Department
Microelectronics-Photonics
Advisor/Mentor
Ranil Wickramsinghe
Committee Member
Xianghong Qian
Second Committee Member
Rick Wise
Third Committee Member
Ingrid Fritsch
Keywords
Electrocoagulation, Membrane Distillation, Membrane Separation, Membrane Surface Modification, Membrane Technology, Produced Water Treatment, Scale Formation
Abstract
Membrane distillation is an emerging technology for treating hydraulic fracturing flowback and produced waters. Suppression of membrane fouling by inorganic and polar and non-polar organic compounds is a challenge. Here polyhydroxyethyl methacrylate, polyacrylic acid, polvinylallyl imidazolium bromide and polyvinylhexyl imidazolium bromide chains have been grafted from the membrane surface. Fouling is initially due to adsorption of organic compounds followed by scale formation. When challenged with produced water, membranes modified with polvinylallyl imidazolium bromide chains provided the greatest resistance to fouling. For EC pretreated produced water and synthetic produced water that contained mainly inorganic species, the flux decline was much less.
Citation
Hawpe Gamage, T. (2020). Surface Modified Polypropylene Membranes for Treating Hydraulic Fracturing Produced Waters by Membrane Distillation. Graduate Theses and Dissertations Retrieved from https://scholarworks.uark.edu/etd/4054
Included in
Environmental Engineering Commons, Fresh Water Studies Commons, Membrane Science Commons, Water Resource Management Commons