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.
Department of Chemical and Environmental Engineering, Gunma University, 1-5-1 Tenjin-cho, Kiryu 376-8515, Japan. beyondcao@hotmail.com
Jing-Pei
JP
Cao
Xiao-Yan
XY
Zhao
Kayoko
K
Morishita
Liu-Yun
LY
Li
Xian-Bin
XB
Xiao
Ryoji
R
Obara
Xian-Yong
XY
Wei
Takayuki
T
Takarada
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