Yustira A, Arif H, Zahedi Z, Razi F. Influence of activators on spent coffee grounds as biosorbent for chromium: Original scientific paper. Chem. Ind. Chem. Eng. Q. [Internet]. 2024 May 22 [cited 2024 Jul. 3];. Available from: https://www.ache-pub.org.rs/index.php/CICEQ/article/view/1346