Juleanti, Novie, Neza Rahyu Palapa, Tarmizi Taher, Nurlisa Hidayati, Bunga Indah Putri, and Aldes Lesbani. 2021. “The Capability of Biochar-Based CaAl and MgAl Composite Materials As Adsorbent for Removal Cr(VI) in Aqueous Solution”. Science and Technology Indonesia 6 (3):196-203. https://doi.org/10.26554/sti.2021.6.3.196-203.