PUSHPAKUMARA, T. .; SANDAKELUM, W. . Heavy Metal Potential of Domestic Biological Wastewater Treatment Plant Sludge: Research Article- DOI: 10.23953/cloud.ijaaeee.503. International Journal of Advanced Alternative Energy, Environment and Ecology , [S. l.], p. pp.90–113, 2021. Disponível em: https://cloudjl.com/index.php/AlternativeEnergy/article/view/30. Acesso em: 10 aug. 2022.