Effect of composting on the production of syngas during pyrolysis of perennial grasses. (15th August 2015)

• Record Type: Journal Article
• Authors: Juchelková, Dagmar; Corsaro, Agnieszka; Hlavsová, Adéla; Raclavská, Helena
• Is Part Of: Fuel. Volume 154(2015)
• Page Start: 380
• Page End: 390
• Publication Date: 2015-08-15
• Subjects: Pyrolysis -- Compost -- Syngas -- Perennial grasses; Fuel -- Periodicals; Coal -- Periodicals; Coal; Fuel; Periodicals; 662.6
• DOI: 10.1016/j.fuel.2015.03.061
• Languages: English
• ISSNs: 0016-2361

Abstract

Highlights: Pyrolysis of perennial grasses and their composts is investigated. Composting increases syngas concentration and higher heating value (HHV). Composting decreases the temperature at which an explicit H2 /CO is reached. Composting influences contents of biochemical components, humic substances and char. Abstract: The effect of composting on the production of syngas, a mixture of hydrogen (H2 ) and carbon monoxide (CO) with an explicit H2 /CO = 2 or H2 /CO = 3 during pyrolysis of six non-hybrid grasses (NHG) and three hybrid grasses (HG) was investigated. The pyrolysis experiments were conducted in a fixed bed reactor to a final temperature of 700 °C. The experimental results obtained in this study demonstrated that composting changed the composition of biomass, significantly reduced the content of carbon dioxide (CO2 ) and made H2 and CO the primary constituents of pyrolysis gas. A significant increase in syngas concentration and a higher heating value (HHV), followed by a decrease in the temperature at which a specific H2 /CO was reached, was observed due to composting as well. The change was associated with thermal decomposition of biochemical components, formation of humic substances, and secondary reactions of char.