Removal of Sulfate from Waste Water by Activated Carbon. Al-Khwarizmi Engineering Journal, [S. l.], v. 5, n. 3, p. 72–76, 2009. Disponível em: https://www.alkej.uobaghdad.edu.iq/index.php/alkej/article/view/573. Acesso em: 30 apr. 2025.