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Significance and Use
The ash content is an approximate measure of the mineral content and other inorganic matter in biomass.
The ash content is used in conjunction with other assays to determine the total composition of biomass samples.
1.1 This test method covers the determination of ash, expressed as the mass percent of residue remaining after dry oxidation (oxidation at 575 ± 25°C), of hard and soft woods, herbaceous materials (such as switchgrass and sericea), agricultural residues (such as corn stover, wheat straw, and bagasse), wastepaper (such as office waste, boxboard, and newsprint), acid and alkaline pretreated biomass, and the solid fraction of fermentation residues. All results are reported relative to the 105°C oven-dried mass of the sample. For particulate wood fuels, Test Method E 1534
1.2 The values stated in SI units are to be regarded as the standard.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
E1534 Test Method for Determination of Ash Content of Particulate Wood Fuels
E1756 Test Method for Determination of Total Solids in Biomass
E1757 Practice for Preparation of Biomass for Compositional Analysis
ICS Number Code 65.040.20 (Buildings and installations for processing and storage of agricultural produce)
UNSPSC Code 73101801(Biomass production services)
ASTM E1755-01(2007), Standard Test Method for Ash in Biomass, ASTM International, West Conshohocken, PA, 2007, www.astm.orgBack to Top