Jump to main content
US EPA
United States Environmental Protection Agency
Search
Search
Main menu
Environmental Topics
Laws & Regulations
About EPA
Health & Environmental Research Online (HERO)
Contact Us
Print
Feedback
Export to File
Search:
This record has one attached file:
Add More Files
Attach File(s):
Display Name for File*:
Save
Citation
Tags
HERO ID
3981857
Reference Type
Journal Article
Title
Mechanochemical destruction of perfluorinated pollutants and mechanosynthesis of lanthanum oxyfluoride: A Waste-to-Materials process
Author(s)
Cagnetta, G; Zhang, Q; Huang, Jun; Lu, M; Wang, Bin; Wang, Y; Deng, S; Yu, G
Year
2017
Is Peer Reviewed?
Yes
Journal
Chemical Engineering Journal
ISSN:
1385-8947
Volume
316
Page Numbers
1078-1090
DOI
10.1016/j.cej.2017.02.050
Web of Science Id
WOS:000398985200110
Abstract
Perfluorinated chemicals (PFCs) are attracting increasing concern due to their chemical stability and toxicity, which make them classifiable as persistent organic pollutants. However, such compounds are employed for the manufacture of many industrial and consumer products, hence their substitution is not possible in the near future. Suitable technologies for PFCs environmentally sound management are necessary. High energy ball milling With KOH has been proved to obtain PFCs safe destruction, but With excessive reagent. In the present study, a Waste-to-Materials solution is proposed: PFCs are co-milled with stoichiometric amounts of La2O3 and thus are fully converted into LaOF, a noteworthy luminescent material with many potential industrial applications. Reaction mechanism is also investigated: Ball milling process activates La2O3; this latter provokes oxidation to CO2 and carbonization of PFCs; fluorides are incorporated into the La2O3's lattice to form the oxyfluoride. Interestingly, kinetic analysis suggests that the mechanical activation of La2O3 might follow a zeroth-order reaction rate. (C) 2017 Elsevier B.V. All rights reserved.
Keywords
Ball milling; Mechanochemistry; Oxyfluoride; Perfluorinated chemicals
Tags
PFAS
•
^Per- and Polyfluoroalkyl Substances (PFAS)
PFOA (335-67-1) and PFOS (1763-23-1)
Literature Search – Adverse outcome pathway (2015-present)
WOS
•
PFOA (335-67-1) and PFOS (1763-23-1)
Literature Search – Adverse outcome pathway (2015-present)
WOS
Screening Results
Excluded/Not on Topic
Literature Search Update (2013-2019)
WOS
Home
Learn about HERO
Using HERO
Search HERO
Projects in HERO
Risk Assessment
Transparency & Integrity