Filtrates with Hydroxyl Radicals Prepared using Al + Acid + H2O2 for Removing Organic Pollutants

Autor:	Yang Yang, Zhen-Yan Deng, Xiao-Han Guo
Jazyk:	angličtina
Rok vydání:	2021
Předmět:	Pollutant Chemistry Bisphenol General Chemical Engineering Radical General Chemistry Article law.invention chemistry.chemical_compound law Methyl orange Phenol Electron paramagnetic resonance Hydrogen peroxide QD1-999 Filtration Nuclear chemistry
Zdroj:	ACS Omega ACS Omega, Vol 6, Iss 22, Pp 14182-14190 (2021)
ISSN:	2470-1343
Popis:	In this work, for the first time, high-activity filtrates were prepared by the reaction of aluminum (Al) powder with hydrogen peroxide (H2O2) in acidic solution and then filtration, which were used to degrade various organic pollutants such as phenol, methyl orange, and bisphenol A. It was found that the filtrates can effectively degrade and mineralize various organic pollutants and have a high efficiency comparable to their parent Al + acid + H2O2 suspensions. The filtrates can keep their high activity for several weeks under ambient conditions, and the activity depends on their initial pH value. At a pH value of ∼3.5, the reaction activity of filtrates is the best. Electron spin resonance spectroscopy (ESR) analyses indicated that there is a large quantity of stable hydroxyl radicals (OH•) existing in the filtrates, which are responsible for the removal of organic pollutants. Furthermore, the related factors are discussed.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7fc92af0a489e5de41829f8516f0a464 http://europepmc.org/articles/PMC8190801 Zobrazit plný text záznamu