title: Sample preparation and biomass determination of SRF model mixture using cryogenic milling and the adapted balance method.
abstract: The biogenic fraction of a simple solid recovered fuel (SRF) mixture (80 wt% printer paper/20 wt% high density polyethylene) is analyzed with the in-house developed adapted balance method (aBM). This fairly new approach is a combination of combustion elemental analysis (CHNS) and a data reconciliation algorithm based on successive linearisation for evaluation of the analysis results. This method shows a great potential as an alternative way to determine the biomass content in SRF. However, the employed analytical technique (CHNS elemental analysis) restricts the probed sample mass to low amounts in the range of a few hundred milligrams. This requires sample comminution to small grain sizes (<200 μm) to generate representative SRF specimen. This is not easily accomplished for certain material mixtures (e.g. SRF with rubber content) by conventional means of sample size reduction. This paper presents a proof of principle investigation of the sample preparation and analysis of an SRF model mixture with the use of cryogenic impact milling (final sample comminution) and the adapted balance method (determination of biomass content). The so derived sample preparation methodology (cutting mills and cryogenic impact milling) shows a better performance in accuracy and precision for the determination of the biomass content than one solely based on cutting mills. The results for the determination of the biogenic fraction are within 1-5% of the data obtained by the reference methods, selective dissolution method (SDM) and (14)C-method ((14)C-M).
authors: Institute for Water Quality, Resource and Waste Management, Vienna University of Technology, Karlsplatz 13, E226/2, 1040 Vienna, Austria. Electronic address: johannes.schnoeller@chello.at.
authors: Johannes
authors: J
authors: Schnöller
authors: Institute for Water Quality, Resource and Waste Management, Vienna University of Technology, Karlsplatz 13, E226/2, 1040 Vienna, Austria.
authors: Philipp
authors: P
authors: Aschenbrenner
authors: Institute for Water Quality, Resource and Waste Management, Vienna University of Technology, Karlsplatz 13, E226/2, 1040 Vienna, Austria.
authors: Manuel
authors: M
authors: Hahn
authors: Institute for Water Quality, Resource and Waste Management, Vienna University of Technology, Karlsplatz 13, E226/2, 1040 Vienna, Austria.
authors: Johann
authors: J
authors: Fellner
authors: Institute for Water Quality, Resource and Waste Management, Vienna University of Technology, Karlsplatz 13, E226/2, 1040 Vienna, Austria.
authors: Helmut
authors: H
authors: Rechberger
mesh_terms: D018533:Biomass; D017745:Incineration; D008962:Models, Theoretical; D010209:Paper; D011095:Polyethylenes / Q000032:analysis*; D012037:Refuse Disposal / Q000379:methods*; D014866:Waste Products / Q000032:analysis*
chemical_list: D011095:Polyethylenes; D014866:Waste Products
keywords: Adapted balance method; Biogenic carbon; Solid recovered fuel; Waste characterization