Recovery of Cr(VI) from vanadium precipitated solution by precipitation with PbSO4Yang Minge, Yang Haoxiang, Tian Shenghui, Hu bin, Chang Changda, Wang Mingyu and Wang XuewenE3S Web Conf., 194 (2020) 04051DOI: https://doi.org/10.1051/e3sconf/202019404051