|
|||||
|
|
Utilization of municipal solid waste incineration (MSWI) fly ash in ceramic brick: product characterization and environmental toxicity |
|
| Authors: | Haiying Zhang Youcai Zhao Jingyu Qi |
| Institution: | a School of Chemical and Environmental Engineering, Shanghai Institute of Technology, Shanghai, China b The State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, Shanghai, China c School of Ocean and Earth, Tongji University, Shanghai, 200092, China |
| Abstract: | In this study, municipal solid waste incineration (MSWI) fly ash was used as a blending in making ceramic brick based on its characterization and an orthogonal test was performed to determine the optimal mixture ratio of the materials. Besides, the fired bricks made in accordance with the optimal mixture ratio were characterized for performance, phase transformation, microstructure, leaching toxicity of the heavy metals in accordance with GB/T 2542-92 (Detection methods for bricks analysis, China) and by means of XRD, SEM and leaching toxicity analysis. It was found that the optimal mixture ratio of materials (MSWI fly ash:red ceramic clay:feldspar:gang sand) was 20:60:10:10 by mass, and the optimal sintering temperature was 950 °C. Leaching results of heavy metals from sintered bricks were reduced considerably in comparison with those from green bricks prior to sintering process. The results as a whole suggested that utilization of MSWI fly ash in ceramic brick constituted a potential means of adding value. |
| Keywords: | |
| 本文献已被 ScienceDirect PubMed 等数据库收录！ | |