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Determination of Total Solids in Biomass and Total Dissolved Solids in Liquid Process Samples
Laboratory Analytical Procedure (LAP) Issue Date: 3/31/2008
A. Sluiter,
B. Hames, D. Hyman,
C. Payne, R. Ruiz, C. Scarlata, J. Sluiter,
D. Templeton, and J. Wolfe Technical Report NREL/TP-510-42621 Revid March 2008
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Technical Report NREL/TP-510-42621 Revid March 2008
Biomass and Total Dissolved Solids in Liquid Process Samples
Laboratory Analytical Procedure (LAP) Issue Date: 3/31/2008
noworneverA. Sluiter,
B. Hames, D. Hyman,
C. Payne, R. Ruiz, C. Scarlata, J. Sluiter,
D. Templeton, and J. Wolfe
DISCLAIMER
百度翻译文言文The Standard Biomass Analytical Methods (“Methods”) are provided by the National Renewable Energy Laboratory (“NREL”), which is operated by the Midwest Rearch Institute (“MRI”) for the Department Of Energy.
Access to and u of the Methods shall impo the following obligations on the ur. The ur is g
ranted the right, without any fee or cost, to u, copy, modify, alter, enhance and distribute the Methods for any purpo whatsoever, except commercial sales, provided that this entire notice appears in all copies of the Methods. Further, the ur agrees to credit NREL/MRI in any publications that result from the u of the Methods. The names NREL/MRI, however, may not be ud in any advertising or publicity to endor or promote any products or commercial entity unless specific written permission is obtained from NREL/MRI. The ur also understands that NREL/MRI is not obligated to provide the ur with any support, consulting, training or assistance of any kind with regard to the u of the Methods or to provide the ur with any updates, revisions or new versions.
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Procedure Title: Determination of Total Solids in Biomass and Total Dissolved Solids in Liquid Process Samples
Laboratory Analytical Procedure
1. Introduction
1.1Biomass samples can contain large and varying amounts of moisture, which can change
quickly when expod to air. To be meaningful, the results of chemical analys of biomass are typically reported on a dry weight basis.
1.2Portions of this procedure are similar to ASTM E1756-01 and T412 om-02
1.3The following procedure describes the methods ud to determine the amount of solids or
moisture prent in a solid or slurry biomass sample. It also covers the determination of
dissolved solids in a liquor sample. A traditional convection oven drying procedure is
covered as well as solids determination using an automatic infrared moisture analyzer. The
convection oven method is recommended for liquor samples.
bright是什么意思2. Scope
2.1This procedure is intended to determine the amount of total solids remaining after 105o C
drying of a biomass sample.
2.2All analys should be performed in accordance with an appropriate laboratory specific
Quality Assurance Plan (QAP).
3. Terminology
免费翻译网3.1Oven dry weight (ODW)- the weight of biomass mathematically corrected for the amount of
moisture prent in the sample at the time of weighing
3.2Total solids- the amount of solids remaining after heating the sample at 105ºC to constant
weight. Converly, the moisture content is a measure of the amount of water (and other
components volatilized at 105o C) prent in such a sample
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3.3Total dissolved solids- the amount of residue remaining from a 0.2 μm filtered liquor sample
emafter heating the sample at 105ºC to constant weight.
3.4Prepared biomass- biomass prepared according to LAP “Preparation of Samples for
Biomass Compositional Analysis”.
学习方式3.5Pretreated biomass- biomass that has been chemically or thermally altered, possibly
changing the structural composition
3.6Slurry- the combined liquid and solid material resulting from biomass pretreatment
3.7Liquor- the liquid fraction of a biomass slurry
4. Significance and U
4.1The results of the chemical analys of biomass samples are typically reported on a 105o C
dry weight basis. The total solids content of a sample is ud to convert the analytical
results obtained on an as-received basis to that of an oven dry weight basis.
5. Interferences
5.1This procedure is not suitable for biomass samples that chemically change upon heating,
such as acidic or alkaline biomass samples.
6. Apparatus
6.1Apparatus required for oven drying method:
6.1.1Convection drying oven, with temperature control of 105 ± 3o C
6.1.2Analytical balance, accurate to 0.1 mg
6.1.3Desiccator containing dessicant
6.2Apparatus required for moisture analyzer method:
6.2.1Automated infrared moisture analyzer
6.2.2Convection drying oven, with temperature control of 105 ± 3o C, optional
7. Reagents and materials
7.1 Reagents
expressionism7.1.1None
7.2 Materials
7.2.1Aluminum pans, made to fit infrared moisture analyzer if necessary
7.2.2Glass fiber pads for liquor samples, optional
7.2.30.2 μm pore size filters, either large syringe filters with syringes or 50 mm filter
units, for liquor samples only
8. ES&H Considerations and Hazards
8.1Follow all applicable NREL chemical handling procedures.
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8.2This standard does not purport to address all of the safety concerns, if any, associated with
its u. It is the responsibility of the ur of this standard to establish appropriate safety and
health practices and determine the applicability of regulatory limitations prior to u.
9. Sampling, Test Specimens and Test Units
9.1Test specimens suitable for analysis by this procedure are as-received, air dried, milled, or
extractive-free biomass solids and the solid fraction of process samples. Slurry and
parated liquor samples are also suitable.
9.2The test specimen size will be dependent on the type of material and shall be obtained in
such a manner as to ensure that it is reprentative of the entire lot of material being
tested.
9.3This procedure is not suitable for biomass samples that chemically change upon heating,
翁凯浩such as acidic or alkaline biomass samples.
10. Procedure
Note: Solid samples usually require 0.5 to 2 grams, slurry samples require 2-5 grams, and
liquor samples require 10 ml, per duplicate. Liquor samples should be filtered through a 0.2 μm pore size filter prior to analysis.Convection oven method is recommended for liquor
samples.
