Synthesis, Characterization, Modeling and Applications of Functional Porous Materials: Poster Session
Sponsored by: ACerS Electronics Division, ACerS Engineering Ceramics Division
Program Organizers: Lan Li, Boise State University; Winnie Wong-Ng, National Institute of Standards and Technology; Kevin Huang, University of South Carolina
Tuesday 12:00 PM
October 19, 2021
Room: Exhibit Hall B
Location: Greater Columbus Convention Center
Session Chair: Lan Li, Boise State University
Poster
P2-30: ScSZ-MC Dual-phase Tubular Membrane for Pre-combustion CO2 Capture: Shichen Sun1; Kevin Huang1; 1University of South Carolina
A high-temperature ceramic-carbonate dual-phase (CCDP) tubular membrane composed of a porous scandium stabilized zirconia (ScSZ) ceramic phase filled with a Li-Na molten carbonate (MC) phase is presented for CO2 capture. Such ScSZ-MC tubular membranes show outstanding CO2 permeability at temperature range of 650-950C. In addition, the wettability of ScSZ phase to MC phase was further enhanced via wet-impregnation of Al2O3 as well as doping with yttria-stabilized zirconia (YSZ) and NiO for elevated pressure application. Moreover, the effect of introducing H2O into sweep stream was evaluated for the tubular ScSZ-MC, showing improved CO2 permeability due to the co-conduction of CO32- and proton (OH-).
Poster
P2-31: Geopolymer Adsorbents for Harvesting N and P from Poultry Litter: Gizem Topal1; Pankaj Sarin1; V.V. Rohit Bukka1; 1Oklahoma State University
Non-judicious disposal of poultry litter can result in the leaching of N and P to aquifers. Harvesting the waste on-site can be crucial for sustainable waste management. In this study, inexpensive porous geopolymer composite adsorbents were developed to sequester N and P. The matrix phase constituted of K-geopolymers and clinoptilolite and MgO were evaluated as additives. Geopolymer composites were characterized for their microstructure, mechanical properties, and N and P removal efficiencies by adsorption from model aqueous solutions. Inclusion of up to 10 vol% clinoptilolite increased the compressive strength of the geopolymer composite but decreased surface area and overall porosity. However, a notable increase in permeability and tortuosity of the adsorbent microstructure was observed. Greater than 98% removal of N or P was achieved using clinoptilolite geopolymer composites within 8-hours. Composites with 5 volume % MgO exhibited 100% and 98.5 removal efficiency for N and P, respectively, within 10 minutes.