COCONUT HUSK CHAR BIOSORPTIVITY IN HEAVY METAL DIMINUTION FROM CONTAMINATED SURFACE WATER. Journal of Engineering Studies and Research, [S. l.], v. 21, n. 4, p. 7–13, 2015. DOI: 10.29081/jesr.v21i4.127. Disponível em: https://jesr.ub.ro/journal/article/view/127. Acesso em: 14 sep. 2025.