Selective photoreduction of acetonitrile to acetaldehyde in dilute aqueous solutions

被引：0
作者：
Provatas, Anthony A. [1 ]
Epling, Gary A. [1 ]
Stuart, James D. [1 ]
Yeudakimau, Aliaksandr [1 ]
机构：
[1] Univ Connecticut, Ctr Environm Sci & Engn, Storrs, CT 06459 USA
来源：
TOXICOLOGICAL AND ENVIRONMENTAL CHEMISTRY | 2014年 / 96卷 / 03期
关键词：
light; treatment; dye; acetonitrile; waste; irradiation; photodegradation; OXIDATIVE-DEGRADATION; MOLECULAR-OXYGEN; BIODEGRADATION; CH3CN;
D O I：
10.1080/02772248.2014.951360
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Acetonitrile is a commonly used solvent in both industry and research. The treatment of acetonitrile wastes in dilute aqueous solutions with visible light offers advantages to chemical treatment and ultraviolet (UV) irradiation. This study presents the degradation of acetonitrile via a photoinduced electron transfer reaction in the presence of a photosensitizer (dye) and a sacrificial reductant under visible light. Acetonitrile photodegradation (photoreduction) was investigated utilizing a variety of sacrificial reductants and photosensitizers. Optimal results were observed in the presence of methylene green and tri-isopropanolamine with a decrease of acetonitrile in solution to 86% in 24hours. The only photoreaction product observed was acetaldehyde and a plausible mechanism for the photochemical degradation of acetonitrile is proposed.
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页码：353 / 361
页数：9
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