Column studies on the removal of chromium from waste water by mango seed shell activated carbon. Journal of Science and Technology, [S. l.], v. 35, n. 2, 2016. DOI: 10.4314/just.v35i2.3. Disponível em: https://journal.knust.edu.gh/index.php/just/article/view/3. Acesso em: 11 jun. 2026.