ASTM E1755-24 PDF

Full title and description

Standard Test Method for Ash in Biomass — specifies a laboratory procedure to determine ash, expressed as the mass percent of residue remaining after dry oxidation, for a range of biomass feedstocks including woods, herbaceous materials, agricultural residues, wastepaper, pretreated biomass and fermentation solids.

Abstract

This concise test method defines sample preparation, dry oxidation (at 575 °C ± 25 °C), and calculation of ash reported relative to the 105 °C oven‑dried mass of the sample. The method is intended for compositional analysis of biomass and for use alongside other assays in feedstock characterization.

General information

• Status: Active (current edition published 2024; ASTM lists the document as active and updated).
• Publication date: Published May 1, 2024 (implemented 01.05.2024); ASTM record shows a last updated entry of May 17, 2024.
• Publisher: ASTM International.
• ICS / categories: Bioenergy/biomass and agricultural processing categories (example listing: ICS 65.040.20).
• Edition / version: E1755-24 (2024 edition).
• Number of pages: 3 pages; DOI: 10.1520/E1755-24.

Scope

This test method covers determination of ash (mass percent of residue after dry oxidation at 575 °C ± 25 °C) for hard and soft woods, herbaceous species (for example switchgrass), agricultural residues (corn stover, wheat straw, bagasse), wastepaper streams, acid/alkaline pretreated biomass, and solid fractions of fermentation residues. Results are reported relative to the 105 °C oven‑dried mass; for particulate wood fuels a separate method (E1534) is recommended.

Key topics and requirements

• Determination of ash by dry oxidation (furnace) at 575 °C ± 25 °C.
• Reporting ash as mass percent of residue relative to 105 °C oven‑dried sample mass.
• Applicable sample types: woods, herbaceous biomass, agricultural residues, wastepaper, pretreated biomass, fermentation solids.
• Notes on units and measurement: SI units are the standard for reported values.
• Cross-reference: For particulate wood fuels use Test Method E1534; method does not replace safety assessment or regulatory compliance steps.

Typical use and users

Laboratories performing biomass compositional analysis, bioenergy researchers, feedstock suppliers and processors, quality control personnel at pellet/biomass fuel plants, and regulatory or standards bodies assessing feedstock properties commonly use this method to quantify inorganic content (ash) as part of material characterization and fuel quality assessment.

Related standards

References and related ASTM methods frequently cited with E1755 include Test Method E1534 (particulate wood fuels) and earlier revisions of E1755 (for example E1755‑01 and E1755‑01(2020)); users should consult complementary compositional and fuel‑quality standards when characterizing biomass.

Keywords

biomass, ash content, dry oxidation, ash determination, feedstock characterization, agricultural residue, wastepaper, pretreatment, bioenergy.

FAQ

Q: What is this standard?

A: ASTM E1755‑24 is the Standard Test Method for Ash in Biomass, a short laboratory procedure to determine the inorganic residue (ash) remaining after dry oxidation of biomass samples.

Q: What does it cover?

A: It specifies sample types, the dry‑oxidation temperature (575 °C ± 25 °C), calculations and reporting conventions (ash as mass percent relative to 105 °C oven‑dried mass), and scope limits (woods, herbaceous materials, agricultural residues, wastepaper, pretreated biomass, fermentation solids).

Q: Who typically uses it?

A: Analytical laboratories, bioenergy researchers, biomass fuel producers and quality control teams, and standards/regulatory bodies use the method to quantify ash for feedstock characterization and fuel quality assessment.

Q: Is it current or superseded?

A: E1755‑24 is the current active edition (2024). It revises earlier versions (for example E1755‑01 and subsequent reapprovals) and is listed as active with ASTM; the document record shows publication 01.05.2024 and a last updated entry on May 17, 2024.

Q: Is it part of a series?

A: E1755 is part of ASTM's suite of bioenergy and biomass test methods maintained by Committee E48 (subcommittee E48.05); it is commonly used alongside other composition and fuel‑quality methods such as E1534.

Q: What are the key keywords?

A: Biomass, ash, ash content, dry oxidation, feedstock, agricultural residue, wastepaper, pretreated biomass, bioenergy.