Determination of the point of zero charge of pineapple (Ananas comosus L.) peel and its application as copper adsorbent. Agro Productividad, [S. l.], 2021. DOI: 10.32854/agrop.v14i11.2009. Disponível em: https://mail.revista-agroproductividad.org/index.php/agroproductividad/article/view/2009. Acesso em: 17 apr. 2026.