Siregar, P. M. S. B. N.; Wijaya, A.; Amri; Nduru, J. P.; Hidayati, N.; Lesbani, A.; Mohadi, R. Layered Double Hydroxide/C (C=Humic Acid;Hydrochar) As Adsorbents of Cr(VI). sci. technol. indones. 2022, 7, 41-48.