Dataset for the assessment of NOx emissions from the combustion of various nitrogen-rich agricultural residues

Abstract

The presented set of data contains experimental results from the combustion of various solid biofuels in a small-scale boiler. The biofuels were prepared from agricultural plant residues that included: 4 samples of Melilotus albus, 3 samples of Papaver somniferum, 1 sample of Medicago lupulina, Medicago sativa and Sinapis alba. The residues were processed into 8 mm pellets. Standardized spruce pellets were used as a reference material. The dataset includes basic fuel properties (moisture, ash and volatile matter content and LHV) and elemental composition (C, H, N, S, O). Compared to spruce pellets, the agricultural residues contain considerable amounts of nitrogen, and their combustion thus presents a potential environmental hazard. The combustion tests were carried out on an automatic pellet boiler with a bottom-feed retort burner. The emissions of NOxwere closely monitored and evaluated. The dataset serves primarily for the assessment of NOxemissions from burning nitrogen-rich biofuels; however, other important parameters are included as well: CO, TOC emissions, O2 content, flue gas temperature and boiler power output. (c) 2025 The Author(s). Published by Elsevier Inc. This is an open access article under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/)