OJHA, B.; SHARMA, R. K.; AMATYA, I. M. Application of Alum Sludge in Phosphate Phosphorus Removal from Contaminated Water. Journal of the Institute of Engineering, [S. l.], v. 15, n. 2, p. 141–146, 2019. DOI: 10.3126/jie.v15i2.27659. Disponível em: https://www.nepjol.info/index.php/JIE/article/view/27659. Acesso em: 4 may. 2024.