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题名: Extract Nitrogen-Containing Compounds in Biocrude Oil Converted from Wet Biowaste via Hydrothermal Liquefaction
作者: Chen, Wan-Ting; Tang, Liyin; Qian, Wanyi; Scheppe, Karalyn; Nair, Ken; Wu, Zhenwei; Gai, Chao; Zhang, Peng; Zhang, Yuanhui
刊名: ACS SUSTAINABLE CHEMISTRY & ENGINEERING
出版日期: 2016-04
卷号: 4, 期号:4, 页码:2182-2190
关键词: HTL biocrude oil ; Water ; Denitrogenation ; Wet biowaste ; Value-added chemicals
DOI: 10.1021/acssuschemeng.5b01645
部门归属: 固体废弃物处理与资源化实验室
英文摘要: This study demonstrates that water can serve as a green solvent to achieve denitrogenation of biocrude oil converted from wet biowaste via hydrothermal liquefaction (HTL) under previously determined optimal reaction conditions (300 degrees C with a 1 h reaction time for swine manure and Chlorella; 300 degrees C with a 0.5 h reaction time for Spirulina). It was hypothesized that water could extract relatively polar chemicals, such as some of the nitrogen-containing compounds, from HTL biocrude oil. This hypothesis was examined by different extraction techniques using water as a solvent to HTL biocrude oil converted from swine manure (SM) and low-lipid algae. The water solubilities of biocrude oil and product yields (water extract, biocrude oil, solid residue, and aqueous and gas products) were measured. Compared to that of the biocrude oil without extraction by water, the nitrogen content of biocrude oil converted from SM decreased from 4.32 to 3.23%. Gas chromatography mass spectrometry (GC-MS) analyses of treated biocrude oil and water extract demonstrated that water can extract nitrogen-containing compounds and separate fatty acid derivatives that were originally in biocrude oil. When an ultrasonically assisted extraction by water was conducted, the nitrogen content in algal biocrude oil decreased from 6.83 to 5.75% with improved carbon and hydrogen content. In addition, GC-MS analyses of treated biocrude oil and water extract suggest that fatty acid derivatives may behave like surfactants and help in emulsifying nitrogen-containing compounds into water.
收录类别: SCI
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内容类型: 期刊论文
URI标识: http://ir.rcees.ac.cn/handle/311016/35780
Appears in Collections:固体废弃物处理与资源化实验室_期刊论文

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