Effective utilization of waste ash from MSW and coal co-combustion power plant - Zeolite synthesis

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	Effective utilization of waste ash from MSW and coal co-combustion power plant - Zeolite synthesis
	Fan, Yun; Zhang, Fu-Shen; Zhu, Jianxin; Liu, Zhengang
刊名	JOURNAL OF HAZARDOUS MATERIALS
	2008-05
卷号	153 期号:2015-01-02 页码:382-388
关键词	municipal solid waste co-combustion ash zeolite wastewater heavy metal
英文摘要	The solid by-product from power plant fueled with municipal solid waste and coal was used as a raw material to synthesize zeolite by fusion-hydrothermal 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 degrees C, crystallization time = 6-10 h and crystallization temperature = 90 degrees 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 degrees 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 Zn2+ contaminated wastewater treatment, the synthesized product presented larger adsorption capacity and bond energy than coal fly ash based zeolite, and the adsorption isotherm data could be well described by Langmuir and Freundlich isotherm models. These results demonstrated that the special type of co-combustion ash from power plant is suitable for synthesizing high quality zeolite, and the products are suitable for heavy metal removal from wastewater. (c) 2007 Elsevier B.V. All rights reserved.
WOS记录号	WOS:000255417500047
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/22034]
专题	生态环境研究中心_环境纳米材料实验室
推荐引用方式 GB/T 7714	Fan, Yun,Zhang, Fu-Shen,Zhu, Jianxin,et al. Effective utilization of waste ash from MSW and coal co-combustion power plant - Zeolite synthesis[J]. JOURNAL OF HAZARDOUS MATERIALS,2008,153(2015-01-02):382-388.
APA	Fan, Yun,Zhang, Fu-Shen,Zhu, Jianxin,&Liu, Zhengang.(2008).Effective utilization of waste ash from MSW and coal co-combustion power plant - Zeolite synthesis.JOURNAL OF HAZARDOUS MATERIALS,153(2015-01-02),382-388.
MLA	Fan, Yun,et al."Effective utilization of waste ash from MSW and coal co-combustion power plant - Zeolite synthesis".JOURNAL OF HAZARDOUS MATERIALS 153.2015-01-02(2008):382-388.