Recycling of typical difficult-to-treat e-waste: Synthesize zeolites from waste cathode-ray-tube funnel glass

doi:10.1016/j.jhazmat.2016.11.041

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	Recycling of typical difficult-to-treat e-waste: Synthesize zeolites from waste cathode-ray-tube funnel glass
	Yao, Zhitong 1; Wu, Daidai 2; Liu, Jie 1; Wu, Weihong 1; Zhao, Hongting 1; Tang, Junhong 1
刊名	JOURNAL OF HAZARDOUS MATERIALS
	2017-02-15
卷号	324 页码:673-680
关键词	E-waste Cathode Ray-tube Leaded Glass Open-loop Recycling Zeolite Synthesis
DOI	10.1016/j.jhazmat.2016.11.041
文献子类	Article
英文摘要	The disposal of waste cathode ray-tubes (CRTs) from old televisions and discarded computer monitors has become a major environmental concern worldwide. In this work, an open-loop recycling method was developed to synthesize zeolites using CRT funnel glass as the raw material. The effects of hydrothermal temperatures and pressure, n(SiO2/Al2O3) molar ratios and hydrothermal time on the resulting products were investigated. The results indicated that hydrothermal temperatures and pressure played critical roles in zeolite synthesis. Amorphous phases were detected at lower temperatures (80-100 degrees C) and pressure (0.47-1.01 bar) with n(SiO2/Al2O3)=2.0. At the temperature of 110 degrees C (pressure 1.43 bar), NaA formed with a mixture of NaP1 and Faujasite. With further increase in the temperature and pressure, the unstable NaA and Faujasite disappeared, and Hydroxysodalite developed. The influence of n(SiO2/Al2O3) ratios on resulting products revealed a single phase of NaA was formed at the ratio of 1.5 and a mixture of NaA and Faujasite at the ratio of 2.0. Prolonging hydrothermal time, however, could promote zeolite crystallization, and NaA gradually developed with an increase in the time from 2 to 6 h at n(SiO2/Al2O3)=1.5. By comparison, crystallization phases were observed only when the time was longer than 8 h at n(SiO2/Al2O3)=2.0. (C) 2016 Published by Elsevier B.V.
WOS关键词	COAL FLY-ASH ; CRT PANEL GLASS ; NA-X ZEOLITES ; LEAD RECOVERY ; ALKALINE ACTIVATION ; ORGANIC-COMPOUNDS ; ELECTRONIC WASTE ; FINE AGGREGATE ; FOAM GLASS ; REDUCTION
语种	英语
WOS记录号	WOS:000390182600062
资助机构	National Natural Science Foundation of China(41373121 ; 41101213 ; 41271249)
内容类型	期刊论文
源URL	[http://ir.giec.ac.cn/handle/344007/14012]
专题	中国科学院广州能源研究所
作者单位	1.Hangzhou Dianzi Univ, Coll Mat Sci & Environm Engn, Hangzhou 310018, Zhejiang, Peoples R China 2.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China
推荐引用方式 GB/T 7714	Yao, Zhitong,Wu, Daidai,Liu, Jie,et al. Recycling of typical difficult-to-treat e-waste: Synthesize zeolites from waste cathode-ray-tube funnel glass[J]. JOURNAL OF HAZARDOUS MATERIALS,2017,324:673-680.
APA	Yao, Zhitong,Wu, Daidai,Liu, Jie,Wu, Weihong,Zhao, Hongting,&Tang, Junhong.(2017).Recycling of typical difficult-to-treat e-waste: Synthesize zeolites from waste cathode-ray-tube funnel glass.JOURNAL OF HAZARDOUS MATERIALS,324,673-680.
MLA	Yao, Zhitong,et al."Recycling of typical difficult-to-treat e-waste: Synthesize zeolites from waste cathode-ray-tube funnel glass".JOURNAL OF HAZARDOUS MATERIALS 324(2017):673-680.