PUARI, A.; RUSNAM, R.; YANTI, N. R. Optimization of the Carbonization Parameter of Exhausted Coffee Husk (ECH) as Biochar for Pb and Cu Removal Based on Energy Consumption. Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering), [S. l.], v. 11, n. 2, p. 242–252, 2022. DOI: 10.23960/jtep-l.v11i2.242-252. Disponível em: https://jurnal.fp.unila.ac.id/index.php/JTP/article/view/5841. Acesso em: 18 oct. 2025.