Knowledge Management System Of Guangzhou Institute of Energy Conversion, CAS
Recycling of typical difficult-to-treat e-waste: Synthesize zeolites from waste cathode-ray-tube funnel glass | |
Yao, Zhitong1; Wu, Daidai2; Liu, Jie1; Wu, Weihong1; Zhao, Hongting1; Tang, Junhong1 | |
2017-02-15 | |
Source Publication | JOURNAL OF HAZARDOUS MATERIALS |
Volume | 324Pages:673-680 |
Abstract | 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. |
Subtype | Article |
Keyword | E-waste Cathode Ray-tube Leaded Glass Open-loop Recycling Zeolite Synthesis |
WOS Headings | Science & Technology ; Technology ; Life Sciences & Biomedicine |
DOI | 10.1016/j.jhazmat.2016.11.041 |
WOS Subject Extended | Engineering ; Environmental Sciences & Ecology |
WOS Keyword | COAL FLY-ASH ; CRT PANEL GLASS ; NA-X ZEOLITES ; LEAD RECOVERY ; ALKALINE ACTIVATION ; ORGANIC-COMPOUNDS ; ELECTRONIC WASTE ; FINE AGGREGATE ; FOAM GLASS ; REDUCTION |
Indexed By | SCI |
Language | 英语 |
Funding Organization | National Natural Science Foundation of China(41373121 ; 41101213 ; 41271249) |
WOS Subject | Engineering, Environmental ; Engineering, Civil ; Environmental Sciences |
WOS ID | WOS:000390182600062 |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://ir.giec.ac.cn/handle/344007/14012 |
Collection | 中国科学院广州能源研究所 |
Affiliation | 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 |
Recommended Citation 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. |
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