RCEES OpenIR  > 环境化学与生态毒理学国家重点实验室
The influence of a washing pretreatment containing phosphate anions on single-mode microwave-based detoxification of fly ash from municipal solid waste incinerators
Ju, Yongming; Zhang, Kairu; Yang, Tiantian; Deng, Dongyang; Qiao, Junqin; Wang, Pu; You, Yan; Du, Ling; Chen, Guihua; Kolodynska, Dorota; Dionysiou, Dionysios D.
2020-05-01
Source PublicationCHEMICAL ENGINEERING JOURNAL
ISSN1385-8947
Volume387Pages:1-10
AbstractPresently, control of the environmental risk posed by fly ash from municipal solid waste incinerators (MSWIs) urgently requires novel strategies to stabilize targeted heavy metals (HMs), detoxify toxic organic pollutants and separate residue alkali metal chlorides. In this study, a washing pretreatment containing phosphate (P) anions was adopted to stabilize HMs, and the main influencing factors as well as the thermodynamics were investigated. The results show that the adsorption process fits well with the Langmuir model, giving a maximal adsorption capacity of 114.35 mg P g(-1) with a preferred liquid-to-solid ratio of 2.5 L g(-1); the thermodynamics equation indicated that this was a spontaneous, endothermic and entropy-increasing process. Moreover, wet fly ash absorbed with P anions was further irradiated with single-mode microwave (MW) energy. The results show that under the preferred conditions of a mass ratio of SiC to wet fly of 10:2, temperature of similar to 480 degrees C and N-2 atmosphere, similar to 99.1% of the total PCDD/Fs were efficiently degraded, accompanied by a residual toxicity equivalent of 13.0 ng I-TEQ/kg. Notably, the presence of thiourea (TU) shortened the MW irradiation time by 27.8%-61.5% compared with the absence of TU and enhanced the generation of hot spots. Furthermore, the principal parameters of MW-based Hagenmaler reactions apparently demonstrate significant difference with traditional heating-based Hagenmaler reactions mainly including the pyrolysis temperature over the range of 200-450 degrees C, an inert atmosphere and at least 1 h of residue time. Accordingly, this study provides a promising alternative strategy to stabilize HMs and detoxify organic pollutants, accompanied with a separation of residue alkali metal chlorides.
Department环境化学与生态毒理学国家重点实验室
KeywordFly ash Phosphate anions Dioxin inhibitor Hagenmaler reactions Hot spots Polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs)
Document Type期刊论文
Identifierhttp://ir.rcees.ac.cn/handle/311016/44826
Collection环境化学与生态毒理学国家重点实验室
Recommended Citation
GB/T 7714
Ju, Yongming,Zhang, Kairu,Yang, Tiantian,et al. The influence of a washing pretreatment containing phosphate anions on single-mode microwave-based detoxification of fly ash from municipal solid waste incinerators[J]. CHEMICAL ENGINEERING JOURNAL,2020,387:1-10.
APA Ju, Yongming.,Zhang, Kairu.,Yang, Tiantian.,Deng, Dongyang.,Qiao, Junqin.,...&Dionysiou, Dionysios D..(2020).The influence of a washing pretreatment containing phosphate anions on single-mode microwave-based detoxification of fly ash from municipal solid waste incinerators.CHEMICAL ENGINEERING JOURNAL,387,1-10.
MLA Ju, Yongming,et al."The influence of a washing pretreatment containing phosphate anions on single-mode microwave-based detoxification of fly ash from municipal solid waste incinerators".CHEMICAL ENGINEERING JOURNAL 387(2020):1-10.
Files in This Item: Download All
File Name/Size DocType Version Access License
The influence of a w(6347KB)期刊论文出版稿开放获取CC BY-NC-SAView Download
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Ju, Yongming]'s Articles
[Zhang, Kairu]'s Articles
[Yang, Tiantian]'s Articles
Baidu academic
Similar articles in Baidu academic
[Ju, Yongming]'s Articles
[Zhang, Kairu]'s Articles
[Yang, Tiantian]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Ju, Yongming]'s Articles
[Zhang, Kairu]'s Articles
[Yang, Tiantian]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: The influence of a washing pretreatment containing phosphate anions on single-mode microwave-based detoxification of fly ash from municipal solid waste incinerators.pdf
Format: Adobe PDF
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.