Influence of temperature and holding time on hexavalent chromium formation during leather combustion

• Type: Article in International Scientific Journal
• Date: 1999

Authors

Ferreira, MJ (Author) Other; Manuel Fonseca Almeida (Author) FEUP; Pinto, T (Author) Other

Journal

Title: Journal of the Society of Leather Technologies and Chemists

Vol. 83

Pages: 135-138

ISSN: 0144-0322

Publisher: Society of Leather Technologists and Chemists

Indexing

ISI Web of Knowledge - 13 Citations

Scopus - 16 Citations

Other information

Authenticus ID: P-001-4FG

Abstract (EN): Previous studies indicated that Cr(VI) was not detected or was below 5 mg/kg in tanned leather scraps. However, after they are burned, the resulting ashes contain meaningful amounts of Cr(VI) that depend on the burning temperature. Furthermore, results obtained at the same ignition temperature, but different holding times, show high variability.(1-3) This paper presents experimental results that confirm the Cr(III) to Cr(VI) transformation during chromium tanned leather combustion and its dependence on temperature and time, thus finding an explanation for variability of the results published before.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 4