Research data for "Integrated Nutrient Recovery and Tetracycline Removal Using Hydrothermal Carbonization of Cow Manure"

This dataset contains the raw and processed experimental data supporting the study “Integrated Nutrient Recovery and Tetracycline Removal Using Hydrothermal Carbonization of Cow Manure.” Cow manure was treated by hydrothermal carbonization at temperatures ranging from 160 to 240 °C and initial pH values ranging from 3 to 11, with a residence time of 2 h. The dataset includes nitrogen and phosphorus concentrations and speciation in the process water, nitrogen and phosphorus mass-balance calculations, chemical oxygen demand measurements, hydrochar yields, and hydrochar characterization data. The hydrochar used for tetracycline adsorption was produced at 200 °C and initial pH 5 for 2 h and was used without additional chemical activation or surface modification. The adsorption dataset includes the effects of initial tetracycline concentration, hydrochar dosage, solution pH, contact time, and temperature, together with isotherm, kinetic, and thermodynamic calculations. The data are provided to support verification, reproducibility, and reuse of the results reported in the associated study.