Adsorption of pentavalent vanadium and hexavalent chromium from vanadium extraction wastewater using modified diatomiteJunhan Li, Shaoli Yang, Kuisong Zhu, Lan Ma, Changgeng Liu, Yi Huang, Wangnan Zhang, Shunhe Han and Xiangli ChengMetall. Res. Technol., 122 1 (2025) 110DOI: https://doi.org/10.1051/metal/2024106