About this Environmental Science article
Effective utilization of waste ash from MSW and coal co-combustion power plant—Zeolite synthesis by Yun Fan; Fu-Shen Zhang; Jianxin Zhu; Zhengang Liu is a Environmental Science article available to read on EtoBox.
The solid by-product from power plant fueled with municipal solid waste and coal was used as a raw material to synthesize zeolite by fusionhydrothermal process in order to effectively use this type of waste material. The effects of treatment conditions, including NaOH/ash ratio, operating temperature and hydrothermal reaction time, were investigated, and the product was applied to simulated wastewater treatment. The optimal conditions for zeolite X synthesis were: NaOH/ash ratio = 1.2:1, fusion temperature = 550 • C, crystallization time = 6-10 h and crystallization temperature = 90 • C. In the synthesis process, it was found that zeolite X tended to transform into zeolite HS when NaOH/ash ratio was 1.8 or higher, crystallization time was 14-18 h, operating temperature was 130 • C or higher. The CEC value, BET surface area and pore volume for the synthesized product at optimal conditions were 250 cmol kg -1 , 249 m 2 g -1 and 0.46 cm 3 g -1 respectively, higher than coal fly ash based zeolite. Furthermore, when applied to Zn 2+ contaminated wastewater treatment, the synthesized product presented larger adsorption capacity and bond energy than coal fly ash based zeolite, and the ads
It is typically read by researchers, students, and practitioners in Environmental Science.
- Author
- Yun Fan; Fu-Shen Zhang; Jianxin Zhu; Zhengang Liu
- Publisher
- Elsevier Science; Elsevier ; Elsevier BV (ISSN 0304-3894)
- Published
- 2008
- Language
- EN
- Field
- Environmental Science (Physical Sciences)