NNAM, R.E.; ANOZIE, J.K.; EMERENINI, N.J.; OKORO, N.U. Bleaching Efficiency of Ortho-Phosphoric Acid Activated Kaolin Clay Sample on Crude Palm Oil Colour Pigment Removal. International Journal of Scientific Research in Chemical Sciences, [S. l.], v. 7, n. 6, p. 12–20, 2020. Disponível em: https://ijsrcs.isroset.org/index.php/j/article/view/84. Acesso em: 7 apr. 2025.