The Removal of Cd2+, Cu2+ and Pb2+ from Aqueous Solution with Palygorskite: The Effects of Humic AcidSichun Ding, Yuting Tang, Xiaobin Chen, Xiaoqian Ma and Tao HuangE3S Web Conf., 350 (2022) 01018DOI: https://doi.org/10.1051/e3sconf/202235001018