| Autor: |
Peng Peng, Xiang Li Xie, Lin Iang Wang, Wen Feng Zhu |
| Rok vydání: |
2014 |
| Předmět: |
|
| Zdroj: |
Advanced Materials Research. :175-179 |
| ISSN: |
1662-8985 |
| DOI: |
10.4028/www.scientific.net/amr.1049-1050.175 |
| Popis: |
Geopolymeric material (geopolymer) was synthesized by casting and curing method using Bayer process red mud and metakaolin as starting materials. The fixation ability of the geopolymer for Pb2+ was studied by leaching method. The results shown that metakaolin played the role of aluminum and silicon donor during the initial strong alkaline aqueous phase. Red mud had principally the role of filler, increasing in this way the final compressive strength of the geopolymer. The compress strength of geopolymer curing 3 days from metakaolin and red mud mixture is 66MPa. The leaching concentration of Pb2+ from 50% red mud geopolymer is 0.891mg/L as the Pb2+ content in geopolymer is 2.5%; the metakaolin-red mud geopolymer has better Pb2+ fixation ability than metakaolin geopolymer. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
|
