BILLAH, M. .; ROHMAH, D. N. .; SHOLAHUDDIN, F. A. .; PANJAITAN, R. .; WAHYUSI, K. N. .; DEWATI, R. Reducing Zinc and Chromium in Wastewater Treatment Biosolid Through Sulfuric Acid Extraction. Nusantara Science and Technology Proceedings, Malang, Indonesia, p. 367-369, 2022. DOI: 10.11594/nstp.2022.2755. Disponível em: https://nstproceeding.com/index.php/nuscientech/article/view/807. Acesso em: 5 feb. 2025.