Hydrochar derived from the hydrothermal carbonization of wheat straw at 180 °C modified with 3-Aminopropyl triethoxysilane to enhance its versatile adsorption of Pb(II), Cu(II), methylene blue, and reactive red. This dataset is not publicly accessible because: Non-EPA data. Owned by University of Florida. It can be accessed through the following means: Contact Dr. Zhang,Yue at the University of Florida. Format: Excel data and images files, about 5MB. This dataset is associated with the following publication: Zhang , Y., Y. Wan, Y. Zheng , Y. Yang, J. Huang, H. Chen, J. Chen, A. Mosa, and B. Gao. Hydrochar loaded with nitrogen-containing functional groups for versatile removal of cationic and anionic dyes and aqueous heavy metals. WATER. MDPI, Basel, SWITZERLAND, 16(23): 3387, (2024).