EXTRACTION OF ZINC SULFATE THAT UTILIZES IN THE MANUFACTURING OF FOOD SUPPLEMENTS BY USAGE (ZN-C) BATTERIES WASTES. Journal of Engineering and Sustainable Development, [S. l.], v. 25, n. 5, p. 67–74, 2021. DOI: 10.31272/jeasd.25.5.7. Disponível em: https://jeasd.uomustansiriyah.edu.iq/index.php/jeasd/article/view/36.. Acesso em: 9 may. 2024.