Einfluss der Holzalterung auf die Brennstoffqualität und die Verbrennungschemie in einem Scheitholzofen

Endriss, Felix; Grammer, Peter; Russ, Michael; Thorwarth, Harald

doi:10.1002/cite.202100096

Cited by 4 publications

(2 citation statements)

References 42 publications

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“…AES is a common method for analysing different solid samples like biomass or materials from related fields [79,136]. ICP-OES is the most used type in the analysis of trace elements in solid biofuels [22,140,[151][152][153][154]. This procedure has also been standardised for solid biofuels in ISO 16968 and ISO 16967 [34,147].…”

Section: Atomic Spectroscopymentioning

confidence: 99%

Analytical Methods for the Rapid Determination of Solid Biofuel Quality

Endriss

Kuptz

Hartmann

et al. 2023

Chemie Ingenieur Technik

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Fuel properties of solid biofuels are essential aspects for the energy‐efficient and low‐emission operation of biomass heat and power plants. Hence, fuel quality parameters are often defined and used for pricing in supply contracts. To simplify and accelerate analytical approaches, rapid analysis devices are required to determine fuel properties such as water‐ and ash content, calorific value, and chemical composition on‐site. This article gives an overview about available technologies and, if applicable, their current state of use as rapid analysis devices for solid biofuels.

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Section: Atomic Spectroscopymentioning

confidence: 99%

Analytical Methods for the Rapid Determination of Solid Biofuel Quality

Endriss

Kuptz

Hartmann

et al. 2023

Chemie Ingenieur Technik

Self Cite

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“…12 In most cases, inductively coupled plasma-optical emission spectrometry (ICP-OES) according to ISO 16967 or ISO 16968 is used. 8,22,23 In ICP-OES analysis, the atoms and ions of the analyte are excited by temperatures (approximately 6000 K), usually using argon plasma. This leads to the different atoms and ions emitting photoelectric radiation (light emission) in characteristic wavelengths.…”

Section: Introduction and State Of The Artmentioning

confidence: 99%

Evaluation and Optimization of an X-ray Fluorescence Analyzer for Rapid Analysis of Chemical Elements in Solid Biofuels

Endriss,

Kuptz,

Wissmann

et al. 2024

Energy Fuels

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To optimize wood-fired heat (and power) plants, it is essential to rapidly determine the chemical composition of solid biofuels on-site shortly before combustion. However, the standard procedures for chemical analysis [inductively coupled plasma-optical emission spectrometry (ICP-OES), inductively coupled plasma-mass spectrometry] are time-consuming, expensive and require highly trained personnel. Thus, they are unsuitable for online fuel analysis. Newly developed, rapid, on-site analysis methods might enhance analysis at the plant. Thereby, X-ray fluorescence (XRF) analysis is one of the most promising methods. So far, XRF has been evaluated in various fields like geology, coal, ash analysis, as well as biomass in general, but this method is still insufficiently investigated for the sector of solid biofuels. The aim of this work is to evaluate and optimize an XRF analyzer for the rapid determination of chemical elements in wood fuels. The XRF analyzer was calibrated using several wood chip samples. Measurements before and after calibration were compared with the reference method (ICP-OES). Results show that XRF can be recommended for analyzing the elements Mg, P, K, Ca, Si, Al, Cr, Mn, Fe, Zn and Pb, while S, Cl, Ti and Ni can potentially be determined with element-specific calibrations. Cu, As, and Cd could not be measured satisfactorily, as many measurements were below the limit of detection. Still, XRF might be used for threshold value monitoring (e.g., in the scope of the German Waste Wood Ordinance).

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