Study of the extraction of tannic acid from pomegranate peels and its applications in removing chromium (III) ion from industrial water. Journal of the College of Basic Education, [S. l.], v. 22, n. 94, p. 137–156, 2022. DOI: 10.35950/cbej.v22i94.8366. Disponível em: https://cbej.uomustansiriyah.edu.iq/index.php/cbej/article/view/8366.. Acesso em: 4 jun. 2026.