Triacetonamine formation in a bio-oil from fast pyrolysis of sewage sludge using acetone as the absorption solvent.
A sewage sludge sample was pyrolyzed in a drop tube furnace at 500 degrees C and sweeping gas flow rate of 300cm(3)/min. Triacetonamine (TAA) was detected with GC/MS as major component in the resulting bio-oil using acetone as the absorption solvent and proven to be a product from the reaction of NH(3) in the bio-oil with the absorption solvent acetone. TAA yield increased with storage time and reached a level about 28.4% (% sludge fed, daf) after 175h. Since the reaction of pure NH(3) with acetone does not proceed, some species in the bio-oil must catalyze the reaction of NH(3) with acetone. TAA was isolated in a high yield (27.9%, daf) and high purity (80.4%) by column chromatography with different solvents, including mixed solvents, as eluants. The study revealed the possibility of sewage sludge as potential resource of TAA.
Cao
Jing-Pei
JP
Department of Chemical and Environmental Engineering, Gunma University, 1-5-1 Tenjin-cho, Kiryu 376-8515, Japan. beyondcao@hotmail.com
Zhao
Xiao-Yan
XY
Morishita
Kayoko
K
Li
Liu-Yun
LY
Xiao
Xian-Bin
XB
Obara
Ryoji
R
Wei
Xian-Yong
XY
Takarada
Takayuki
T
D008401:Gas Chromatography-Mass Spectrometry; D006358:Hot Temperature; D012722:Sewage; D014216:Triacetoneamine-N-Oxyl / Q000031:analogs & derivatives* / Q000378:metabolism
D012722:Sewage; D014216:Triacetoneamine-N-Oxyl; C002273:tempidon