SINGH, Kulbir. A Review of Low-Cost Natural Adsorbents for Heavy Metal Removal from Wastewater. Journal of Research in Science and Engineering, [S. l.], v. 8, n. 6, p. 53–64, 2026. DOI: 10.66069/ojspub.16560612. Disponível em: https://bryanhousepub.com/index.php/jrse/article/view/3640. Acesso em: 12 jul. 2026.