FARHANEEM, N.; DIMIN, M.; SHAABAN, A.; MOHAMAD, N. Optimization of Phosphoric Acid Treatment Biochar using Response Surface Method. Journal of Advanced Manufacturing Technology (JAMT), [S. l.], v. 12, n. 1(1), p. 453–466, 2018. Disponível em: https://ojsdemo.utem.edu.my/jamt/article/view/4013. Acesso em: 7 jul. 2025.