MOHADI, R.; PALAPA, N. R.; TAHER, T.; SIREGAR, P. M. S. B. N.; NORMAH; JULEANTI, N.; WIJAYA, A.; LESBANI, A. Removal of Cr(VI) from aqueous solution by biochar derived from rice husk. Communications in Science and Technology, v. 6, n. 1, p. 11-17, 27 Jul. 2021.