About this Abstract |
| Meeting |
MS&T21: Materials Science & Technology
|
| Symposium
|
Synthesis, Characterization, Modeling and Applications of Functional Porous Materials
|
| Presentation Title |
P2-31: Geopolymer Adsorbents for Harvesting N and P from Poultry Litter |
| Author(s) |
Gizem Gul Topal, Pankaj Sarin, V.V. Rohit Bukka |
| On-Site Speaker (Planned) |
V.V. Rohit Bukka |
| Abstract Scope |
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. |