Leaching of Pyrene from Fly Ash and Mineral Particles

Autor:	Uuve Kirso, Natalya Irha
Rok vydání:	1999
Předmět:	chemistry.chemical_classification Polymers and Plastics Organic Chemistry Mineralogy Sorption Particulates Organic compound chemistry.chemical_compound Adsorption chemistry Fly ash Specific surface area Environmental chemistry Materials Chemistry Pyrene Leaching (metallurgy)
Zdroj:	Polycyclic Aromatic Compounds. 14:161-168
ISSN:	1563-5333 1040-6638
Popis:	The investigation focused on particulate matrices of fly ash, two commercial adsorbents (silica and alumina), and their relative effects on the uptake and leaching of Pyrene (Pyr), an organic compound of environmental significance. Oil-shale fly ash particles from Baltic and Estonian thermal power plants have a small specific surface area. The degree of Pyr uptake and leaching varied significantly with the particulate matrix used. Shale oil fly ash adsorbed the lowest quantity of Pyr, calculated by particle mass. In contrast, uptake by fly ash significantly exceeded the amount of parent compound on mineral adsorbents, taking into account the specific area of the matrix. Process of leaching of Pyr from fly ash and mineral particles was going rapidly. The amount of total Pyr removed from particles during the three hours leaching was 100 mg/kg (76% from total sorbed Pyr) for fly ash, 317.9 mg/kg (68.1%) for alumina, and 667.4 mg/kg (88.4%) for silica.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::a253d7f267e6975a156dfe8ac120fec1 https://doi.org/10.1080/10406639908019122 Zobrazit plný text záznamu