Advances in Surface Engineering II: Poster Session
Sponsored by: TMS Materials Processing and Manufacturing Division, TMS: Surface Engineering Committee
Program Organizers: Tushar Borkar, Cleveland State University; Arif Mubarok, PPG; Rajeev Gupta, North Carolina State University; Sandip Harimkar, Oklahoma State University; Tanaji Paul, Florida International University
Tuesday 5:30 PM
February 25, 2020
Room: Sails Pavilion
Location: San Diego Convention Ctr
Cancelled
M-49: Comparison of Reduced Graphene Oxide Membranes by Spray and Vacuum Filtration for Use in Water Desalination: Wagner Pinheiro1; Anthony Oliveira1; Andreza Lima1; 1Military Institute of Engineering
In the desalination application, the objective is to replace the currently used materials in nano-filtration and reverse osmosis by reduced graphene oxide (rGO) membranes. The presence of nanocanals in rGO membranes is what allows the separation of ions from the salts present in the water, considerably reducing the concentration of these impurities. The membranes were produced by conventional spray and vacuum filtration techniques on cellulose acetate substrates having a pore size of 0.2 μm. The materials obtained were thermally treated, in the range of 100-200oC, in order to improve their properties.For evaluation of the membranes, their thickness and structural properties were characterized initially by profilometer, X-ray diffraction (XRD) and scanning electron microscopy (SEM).
M-50: The Synchronous Suppression - Reinforced Dispersion Behaviors of Regulators on Micro Fine Ilmenite and Titanaugite: Gui-xia Fan1; Taojin Wang1; Shi-Xiong Zhang1; Yi-Jun Cao1; Peng Li1; 1Zhengzhou University
Titanaugite particles are detrimental to the fine ilmenite flotation process. In this work, the effects of sodium hexametaphosphate，sodium silicate，acidize sodium silicate, CMC on titanaugite and ilmenite synchronous suppression - reinforced dispersion. The results show surface properties of minerals were significant changed by regulators for minerals. Through the flotation test of pure mineral flos, sodium hexametaphosphate has the worst depressor effect on titanaugite. CMC both have better depressor effect on titanaugite and ilmenite. Hydrophilic change sequence of four regulators for ilmenite: CMC > sodium hexametaphosphate > acidize sodium silicate > sodium silicate; Hydrophilic change sequence of four regulators for titanaugite: CMC > acidize sodium silicate > sodium silicate > sodium hexametaphosphate; Surface potential change sequence of four regulators for ilmenite: CMC > sodium hexametaphosphate > acidize sodium silicate > sodium silicate; Surface potential change sequence of four regulators for titanaugite: CMC > sodium hexametaphosphate > sodium silicate > acidize sodium silicate.