期刊
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
卷 41, 期 48, 页码 22722-22731出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2016.09.031
关键词
Supercritical water gasification; Chicken manure; Hydrogen production; Activated carbon
资金
- National Natural Science Foundation of China [51236007]
- China National Key Research and Development Plan Project [2016YFB0600100]
- Australian Research Council [LP 110100337]
The gasification characteristics of chicken manure in supercritical water (SCW) were investigated in a fluidized-bed reactor. Effects of reaction parameters such as reaction temperatures, manure concentrations and catalytic effect of activated carbon on the gasification were studied. The results showed that the temperature play a key role in the formation of gaseous products. Chicken manure was almost completely gasified at 620 degrees C without addition of catalyst and the carbon gasification efficiency can reach up to 99.2%. The liquid and solid products were characterized by COD, SPE-GC/MS, SEM, EDX and FTIR. The main compositions of liquid products were phenol and substituted phenols, N-heterocyclics, benzene and substituted benzenes, carbocyclics. The types of organic compounds in liquid products decreased quickly with the increase of temperature. The FTIR spectra of solid products showed a lower content of carbohydrates and higher content of aromatic structures compared to the initial chicken manure. N-heterocyclic compounds had been detected in both solid and liquid products. Activated carbon as a catalyst could improve the hydrogen yield significantly and promote carbon gasification efficiency at a lower temperature. The maximum hydrogen production of 25.2 mol/kg was achieved at 600 degrees C with activated carbon loading of 6 wt%. Besides, activated carbon showed a good removal ability of inorganic species, specifically the metal cations in chicken manure. (C) 2016 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
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