Comparison between Performance of Okra Waste and Wheat Bran for Removing some Heavy Metals from Wastewater. Al-Nahrain Journal for Engineering Sciences, [S. l.], v. 21, n. 1, p. 36–44, 2018. DOI: 10.29194/NJES21010036. Disponível em: https://nahje.com/nahje/article/view/419. Acesso em: 28 apr. 2026.