Replication Data for: ATR-FTIR Spectra of Peat, Digestate, Biochar, and Organo-Mineral Fertilizerhttps://doi.org/10.48788/DVUA/CFSY4TOstroha, RuslanMija, AliceCibotaru, SanduSkydanenko, MaksymBataltsev, YevhenDataverseUA2025-12-222026-01-08T10:35:47Z<p>This dataset contains graphical representations (.png) of FTIR spectra for four organic and organo-mineral samples. The spectral analysis was performed to identify functional group changes during the valorization of digestate.</p> <b>List of analyzed samples:</b> <ol> <li>Peat (Reference material)</li> <li>Solid Digestate (Raw material from anaerobic digestion)</li> <li>Digestate Biochar (Pyrolyzed digestate)</li> <li>Digestate + (NH₄)₂SO₄ (Organo-mineral fertilizer enriched with ammonium sulfate)</li> </ol> <b>Methodology:</b> <p>The FTIR spectra were recorded using a Nicolet iS50 FT-IR spectrometer (Thermo Fisher Scientific, USA) equipped with a GladiATR diamond ATR accessory (PIKE Technologies, USA). Measurements were performed at a resolution of 2 cm^-1, with 32 scans, in the spectral range of 4000–600 cm^-1.</p>Agricultural SciencesEarth and Environmental SciencesFTIR spectroscopyDigestatePeatBiocharAmmonium sulfate2025-12-22Bataltsev, Yevhen2025-12-20Spectral DataCC BY 4.0