Theses and Dissertations
Issuing Body
Mississippi State University
Advisor
Gude, Veera Gnanrswar.
Committee Member
Truax, Dennis D.
Committee Member
Ramirez-Avila, John J.
Committee Member
Martin, James L.
Committee Member
Griggs, Christopher.
Date of Degree
5-6-2017
Document Type
Graduate Thesis - Open Access
Major
Civil and Environmental Engineering
Degree Name
Master of Science
College
James Worth Bagley College of Engineering
Department
Department of Civil and Environmental Engineering
Abstract
Graphene Oxide (GO) has emerged within the last decade as a next generation material for water treatment. Fabrication of graphene oxide membranes has been limited in scale and application due to repulsive hydration forces causing GO layers to electrostatically separate. In this study, chitosan is utilized to increase GO stability in the wet state through interactions with the negatively charged GO sheets (CSGO). This simple aqueous self-assembly allows scalable fabrication and enhanced stability for membrane applications in crosslow. The CSGO membrane’s performance was tested in a crosslow reactor and challenged with methylene blue at concentrations ranging from 1 to 100 ppm at 345 kPa with fluxes ranging from 1 to 4.5 L/(m2 hr) with 100% removal by physical rejection. This work demonstrates that the CSGO composite matrix is a potential alternative to traditional polymeric membranes for water treatment using a renewable biopolymer and minimal chemical input.
URI
https://hdl.handle.net/11668/16849
Recommended Citation
Mattei Sosa, Jose Antonio, "Crosslinking Graphene Oxide and Chitosan to Form Scalable Water Treatment Membranes" (2017). Theses and Dissertations. 1226.
https://scholarsjunction.msstate.edu/td/1226