Article ID Journal Published Year Pages File Type
1197913 Journal of Analytical and Applied Pyrolysis 2007 7 Pages PDF
Abstract

The pyrolysis of thermally thick (approximately 75 g) biomass residues samples (i.e. brewer spent grains, fibreboard and coffee beans waste) has been investigated in an in-house designed and fabricated macro-TGA both by rapid sample introduction at reactor temperatures from 600 to 900 °C and by applying a constant heating rate of 10 K/min. The composition of the product gas is determined by simultaneous online use of a micro-GC and a FTIR analyser. The product yields (liquid, char and gas) and the gas composition show a clear dependence on temperature and heating rate. The main gas products are CO2, CO, CH4, H2, C2H2, C2H6 and C2H4. The results show that a rise in temperature leads to increasing gas yields and decreasing liquid and char yields. Lower heating rates favour liquid and char yields. The release patterns of the gaseous species are also greatly affected by the temperature history of the sample.

Related Topics
Physical Sciences and Engineering Chemistry Analytical Chemistry
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