Hydrothermal conversion of water lettuce biomass at 473 or 523 K

Luo, Guang’en, Shi, Weiyong, Chen, Xiaoping, Ni, Wuzhong, Strong, P. James, Jia, Yanfang and Wang, Hailong (2011) Hydrothermal conversion of water lettuce biomass at 473 or 523 K. Biomass and Bioenergy, 35 12: 4855-4861. doi:10.1016/j.biombioe.2011.10.002

Author Luo, Guang’en
Shi, Weiyong
Chen, Xiaoping
Ni, Wuzhong
Strong, P. James
Jia, Yanfang
Wang, Hailong
Title Hydrothermal conversion of water lettuce biomass at 473 or 523 K
Journal name Biomass and Bioenergy   Check publisher's open access policy
ISSN 0961-9534
Publication date 2011-01-01
Sub-type Article (original research)
DOI 10.1016/j.biombioe.2011.10.002
Open Access Status Not yet assessed
Volume 35
Issue 12
Start page 4855
End page 4861
Total pages 7
Place of publication Kidlington, Oxford, United Kingdom
Publisher Pergamon
Language eng
Abstract The high moisture content of an aquatic biomass was used advantageously in a hydrothermal process. Reducing sugars, amino acids, proteins, and crude oil were extracted from water lettuce (Pistia stratiotes L.) using subcritically heated water. The highest yields of reducing sugars and amino acids were obtained after treatment at 473 K for 30 min (23.70 ± 0.52 g kg-1 and 4.35 ± 0.09 g kg-1 dry mass respectively), while protein was obtained at 3.60 ± 0.04 g kg-1 feedstock after treatment at 523 K for 60 min. The greatest solubilization occurred at 523 K after 60 min. The solid residues could be applied as fertilizers as hemicellulose and cellulose were hydrothermally converted to humus. The crude oil components that were extracted from the liquid residues differed markedly between the two treatment temperatures. The conversion of furan compounds to cyclopentenone and its derivatives only occurred at the higher reaction temperature and was increased by a longer reaction time.
Keyword Aquatic
Pistia stratiotes
Thermal hydrolysis
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Civil Engineering Publications
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