Title

Reductive degradation of oxygenated polycyclic aromatic hydrocarbons using an activated magnesium/co-solvent system

Authors

Authors

M. R. Elie; C. A. Clausen;C. L. Yestrebsky

Comments

Authors: contact us about adding a copy of your work at STARS@ucf.edu

Abbreviated Journal Title

Chemosphere

Keywords

Magnesium; Degradation; Oxygenated polycyclic aromatic hydrocarbons; Chemical reduction; PARTICULATE MATTER; IRON METAL; KINETICS; DECHLORINATION; TOXICITY; QUINONES; AEROSOLS; SORPTION; HAZARDS; KETONES; Environmental Sciences

Abstract

This study evaluates the capability of zero-valent magnesium and a protic co-solvent to promote the degradation of oxygenated polycyclic aromatic hydrocarbons compounds, specifically 9-fluorenone, 9,10-anthraquinone, 7,12-benz(a)anthraquionone, and 7H-benz(de)anthracene-7-one. At room temperature conditions, greater than 86% degradation efficiency is observed after 24 h of reaction time for a mixture containing 0.05 g of magnesium and four selected oxygenated aromatic hydrocarbons with 250 mg L-1 concentrations. It is noted that glacial acetic acid is needed as an activator for the degradation reaction to proceed. It is also presumed that the acid removes oxide and hydroxide species from the magnesium surface. With the GC-MS analysis of the reaction products, possible reductive pathways are suggested. Furthermore, this study is the first report on the degradation of these emerging contaminants and it is proposed that the magnesium-powder/protic-solvent system is a promising low-cost reagent and may allow for the future development of an economic and environmentally-friendly remediation application. (C) 2013 Elsevier Ltd. All rights reserved.

Journal Title

Chemosphere

Volume

91

Issue/Number

9

Publication Date

1-1-2013

Document Type

Article

Language

English

First Page

1273

Last Page

1280

WOS Identifier

WOS:000319094000007

ISSN

0045-6535

Share

COinS