Nomanbhay, S. M. and Palanisamy, K. (2005) “Removal of heavy metal from industrial wastewater using chitosan coated oil palm shell charcoal”, Electronic Journal of Biotechnology. Valparaíso, Chile, 8(1), pp. 0–0. Available at: https://preprints.pucv.cl/index.php/ejbiotechnology/article/view/v8n1-7 (Accessed: 19 September 2024).