Gasification of agricultural residues (biomass): Influence of inorganic constituents
- Univ. of Montana, Missoula (USA)
- Univ. of Agricultural Sciences, Uppsala (Sweden)
Four different biomass samples are included in this study, viz., sphagnum peat, wheat straw, sugar beet pulp, and potato pulp. They were chosen to represent a wide range of plant origin and inorganic content. This paper represents a preliminary investigation of an approach based on pyrolysis of biomass to produce volatile products and chars, followed by gasification of the chars. The particular interest lies in the investigation of the influence of the indigenous metal ions on the rate of gasification. Carbon dioxide has been used for the gasification, and the biomass was analyzed for nine metals, uronic acids (which are implicated in the binding of inorganic counterions), protein, and Klason lignin. The highest individual metal ion content was 13,964 ppm of potassium in potato pulp, and the gasification rates, under constant conditions, covered up to a 20-fold range, with char from potato pulp being the most readily gasified and char from peat the most resistant. The correlation of gasification rates with content of the major metal ions (alkali metals and alkaline earths) was poor. However, a high level of correlation was observed when wheat straw was omitted. It is speculated that the latter biomass may be anomalous with respect to the other three because of its high silica content.
- OSTI ID:
- 6552243
- Journal Information:
- Journal of Agricultural and Food Chemistry; (USA), Vol. 38:1; ISSN 0021-8561
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
AGRICULTURAL WASTES
GASIFICATION
METALS
CATALYTIC EFFECTS
BEETS
BIOMASS
CARBON DIOXIDE
CHARS
PEAT
POTATOES
PYROLYSIS
SYNTHESIS GAS
THERMOCHEMICAL PROCESSES
WHEAT
CARBON COMPOUNDS
CARBON OXIDES
CEREALS
CHALCOGENIDES
CHEMICAL REACTIONS
DECOMPOSITION
ELEMENTS
ENERGY SOURCES
FLUIDS
FOOD
FOSSIL FUELS
FUELS
GASES
GRAMINEAE
LILIOPSIDA
MAGNOLIOPHYTA
MAGNOLIOPSIDA
ORGANIC MATTER
ORGANIC WASTES
OXIDES
OXYGEN COMPOUNDS
PLANTS
PYROLYSIS PRODUCTS
RENEWABLE ENERGY SOURCES
TUBERS
VEGETABLES
WASTES
090900* - Biomass Fuels- Processing- (1990-)