Gasification of agricultural residues (biomass): influence of inorganic constituents

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 biom...

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Bibliographic Details
Published in:Journal of agricultural and food chemistry 1990-01, Vol.38 (1), p.320-323
Main Authors: DeGroot, William F, Kannan, M. Parambil, Richards, Geoffrey N, Theander, Olof
Format: Article
Language:English
Subjects:
09 BIOMASS FUELS
090900 - Biomass Fuels- Processing- (1990-)
AGRICULTURAL WASTES
Agronomy. Soil science and plant productions
BEETS
Biological and medical sciences
BIOMASA
BIOMASS
BIOMASSE
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CATALYTIC EFFECTS
CEREALS
CHALCOGENIDES
CHARS
CHEMICAL REACTIONS
DECHET AGRICOLE
DECOMPOSITION
DESECHOS AGRICOLAS
ELEMENTS
ENERGY SOURCES
FLUIDS
FOOD
FOSSIL FUELS
FUELS
Fundamental and applied biological sciences. Psychology
GASES
GASIFICATION
General agronomy. Plant production
GRAMINEAE
LILIOPSIDA
MAGNOLIOPHYTA
MAGNOLIOPSIDA
METALS
ORGANIC MATTER
ORGANIC WASTES
OXIDES
OXYGEN COMPOUNDS
PEAT
PLANTS
POTATOES
PROCESAMIENTO
PYROLYSIS
PYROLYSIS PRODUCTS
RENEWABLE ENERGY SOURCES
SYNTHESIS GAS
THERMOCHEMICAL PROCESSES
TRAITEMENT
TUBERS
Use of agricultural and forest wastes. Biomass use, bioconversion
VEGETABLES
WASTES
WHEAT
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Summary: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 speculate that the latter biomass may be anomalous with respect to the other three because of its high silica content
ISSN:0021-8561
1520-5118
DOI:10.1021/jf00091a070